Process Design Criteria for Sulphide Concentrator & Infrastructure (Phaso 0)

7/23/2019 Process Design Criteria for Sulphide Concentrator & Infrastructure (Phaso 0)

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Compañía Minera Doña Inés De Collahuasi

___________________________________

COLLAHUASI COPPER PROJEC

PROCESS DESI!" CRIERIA

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Collahuasi\Docs\Engin\gral\Process\des-cri\db1001r1.doc



Design Criteria forSulphide Concentrator & Infrastructure

23132-DB-1001Rev.1

A2LE O# CO"E"S

Pa*e

%:- !E"ERAL <1.1 Introduction1.2 Source Codes1.3 Definition of Design alue !er"s1.# $ro%ect Scope1. Ite" $rovided '( C)DIC1.* $ro%ect +reas

3:- PROCESS SUMMAR7 %32.1 Description

2.2 Bloc, lo Diagra"

9:- MEASUREME" U"IS A"D S7M2OLS 33

<:- SIE DAA 30#.1 /ocation#.2 Site !opograph( and Soil Data#.3 )eteorological Data#.# eotechnical and Seis"ic#. ther Site Data

;:- E"6IRO"ME"AL CRIERIA 35.1 +pplica'le Regulations and Standards.2 ther Specified and $er"it Reuire"ents.3 Su""ar( of Interpretation to $rocess Design

0:- ECO"OMIC CRIERIA 3=*.1 valuation of +lternatives*.3 Cost-Benefit +nal(sis

5:- DESI!" CRIERIA RE#ERE"CE LIS 3=

=:- PRODUCIO" SUMMAR7 3.4.1 +nnual $roduction $ara"eters4.2 verall Balance

4.3 perating Schedule

.:- CHARACERISICS O# PROCESS #EED MAERIALS 9%A"D CO"SUMA2LES

Pa*e

%-:- MI"E 9<

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23132-DB-1001Rev.1

10.1 )ine uip"ent

%%:- SULPHIDE PLA" 9<11.1 Crushing and Conve(ing - 6%ina11.2 Crushing and Conve(ing - Rosario11.3 Coarse re Storage and Reclai"11.# $ri"ar( rinding Circuit11. lotation Circuit11.* Reagent 7andling and Distri'ution11.8 !ailings Disposal and 9ater Reclai"

%3:- CO"CE"RAE HA"DLI"! A"D PIPELI"E <;12.1 Concentrate !hic,eners12.2 Concentrate Slurr( Storage

12.3 Concentrate $u"ping12.# Concentrate $ipeline and Cho,e Stations

%9:- POR #ACILIIES <013.1 Concentrate !hic,ener 13.2 Concentrate Slurr( Storage13.3 Concentrate Deatering13.# Concentrate iltrate !reat"ent and Disposal13. Concentrate Storage and Reclai"13.* 9harf 13.8 Shiploader

%<:- UILIIES <51#.1 $oer /ine1#.2 $oer Distri'ution1#.3 9ater Suppl( and Distri'ution1#.# )iscellaneous





23132-DB-1001Rev.1

%:- !E"ERAL

%:% In)ro'u+)ion

!he process design criteria contains relevant data for the engineering: design andspecification of the process reuire"ents for the Copper Concentrator: $ipeline :$ort acilities: 6tilities and Infrastructure for the Collahuasi Copper $ro%ect ofCo"pan;a )inera Do<a In=s de Collahuasi. !his docu"ent defines essentiall(the Sulphide $lant process design criteria and ill 'e the source docu"ent for thepro%ect. 9here duplication of data e>ists ith other specific docu"ents: this ill'e considered the source specification.

%:3 Sour+e Co'es

!he folloing source codes are used to reference the orig-in of each criterion.

CD S6RC

+ Criteria provided '( C;a. )inera Do<a In=s de Collahuasi S.+.

?C)DIC@

B Standard industr( practice

C Bechtel-Dav( reco""endation

D endor originated criteria

Criteria fro" process calculations

ngineering hand'oo, data

+ssu"ed data

!B+ A!o Be +dvisedA Data to 'e supplied later '( Client: endor: or as

derived fro" later calculations.

%:9 De1ini)ion o1 Desi*n 6alue erms

+nnual rate lo rate for 3* calendar da(s

Dail( rate lo rate for 2# hour da(

7ourl( Rate lo rate for 1 hour.

perating Da(s !he nu"'er of plant operating da(s per (ear is 3*da(s

perating 7ours !he nu"'er of plant operating hours per (ear is 48*0hours

6tiliation + utiliation factor of unit( represents the capa'ilit(of : and reuire"ent for: an( euip"ent or facilit('eing on-line for 2# hours per da( for all operatingda(s in the (ear. + utiliation factor of less than unit(

Collahuasi\Docs\Engin\gral\Process\des-crit\db1001r1.doc Sheet # of 5




23132-DB-1001Rev.1

reflects the co"'ined effect of alloed availa'ilit( for that facilit( and the utiliation effect fro" the on-line

ti"e of upstrea" or donstrea" euip"ent: or fro"other factors.

+vaila'ilit( +n availa'ilit( factor of unit( represents the capa'ilit(of : and reuire"ent for: an( facilit( 'eing on line 48*0hours per (ear. +n availa'ilit( factor of less than unit(reflects the fraction of the total annual ti"e that thefacilit( is availa'leE for operating after deducting ti"ereuired for "aintenance and other donti"e factors.

losheet Fo"inalBalance

!he values in the "ominal 2alan+eE colu"n?generall( flo rate@ that represents the stead(-state

average rate during the design utiliation ti"e per operating hour ?da(@ for an( facilit( or euip"ent.!hus:

Dail( Rate G +nnual average rate per da( G *0000 tHd

7ourl( Rate G Fo"inal Balancedail( rate H ? 2# hours availa'ilit( factor@ G

*0000 H ?2#J0.5@ G 2884tHh

losheet DesignRate

!he values in the Desi*n 2alan+eE colu"n ?generall(flo rate@ that represents the stead(-stateinstantaneous or short duration rate per operatinghour ?da(@ for an( facilit( or euip"ent. !heinstantaneous rate reflects the designE factor 'eingutilied for euip"ent and piping siing to allo for "aintenance: catch-up capa'ilit( or for varia'ilit( inprocess para"eters. !he Desi*n values are intendedas attaina'le continuous rates and do not include an(additional design alloance?s@: '( engineer or vendor:to ensure attain"ent. !hus:

7ourl( Rate G Fo"inal Balance hourl(rate design factor

Design actor G Refer to Section 4.#Design actors for uip"ent

%:< Pro>e+) S+ope

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23132-DB-1001Rev.1

!his or, is carried out in the Santiago offices of Bechtel-Dav( using 'oth local

personnel and e>patriate specialists.

%:<:% S+ope o1 #a+ili)ies

!he scope of the process plant covers the folloing

• $ri"ar( crushing of run-of-"ine ?R)@ ore ?'oth o>ide and

sulphide ores@

• $ri"ar( crushed ore deliver( to stoc,pile

• Deliver( of pri"ar( crushed ore to the S+ "ills

• S+ and 'all "ills

• lotation plant ?rougher: first cleaner: cleaner-scavenger: second

cleaner and sand flotation@

• Regrind "ills

• !ailings handling: storage and ater recover(

• Concentrate handling

• Concentrate pipeline

• Concentrate deatering and port storage

• Concentrate ship loading

• $ort and "ooring facilities

• Infrastructure and services

%:<:3 S+ope o1 Ser&i+es

!he pro%ect is divided into the folloing categories

• Revie Basic ngineering

• Detail Design and ngineering

• $rocure"ent

• Construction )anage"ent

• eneration and interpretation of soils data

E?+lusions

!he folloing ite"s are specificall( e>cluded fro" the scope

• eological investigation and drilling of the ore 'od(

• )ine planning including "ine develop"ent and "ining euip"ent

selection

• )ining activities apart fro" utilities

• R) ore transport to pri"ar( crusher

• /ocation: drilling: proving: and casing of ater suppl( ells

Collahuasi\Docs\Engin\gral\Process\des-crit\db1001r1.doc Sheet * of 5




23132-DB-1001Rev.1

• $reparation of sa"ples for thic,ening: filtering: rheolog( and other

tests

• )ineralogical and "etallurgical test or,• nviron"ental and construction per"itting apart fro" support

activit(

• 7(drological and oceanographic surve(s

%:<:9 Plan) 2a))er4 Limi)s

Client ill suppl( the folloing

• Run-of-)ine ?R)@ ore to pri"ar( crusher du"p poc,et

• $e''le li"e delivered to storage 'ins

• )IBC reagent delivered to storage tan,s

• Dofroth 20 reagent delivered to storage tan,

• S-323 ?eth(l-isoprop(l thiocar'a"ate@ flotation reagent

delivered to storage tan,

• S-113 ?isoprop(l >anthate@ flotation reagent delivered to

storage area

• S-11# ?iso'ut(l >anthate@ flotation reagent delivered to

storage area

• locculant delivered to storage area

• 9ater at suppl( ells

• lectrical energ( fro" utilit(

• Concentrate ships

• uel delivered to storage tan,

• Replace"ent and other consu"a'le operating "aterials

• >pended parts and "aterials of operation fro" patio

• 6tilities as reuired for construction

Client ill accept the folloing

• Concentrate delivered fro" shiploader





23132-DB-1001Rev.1

%:<:; I)ems Pro&i'e' @4 CMDIC

En*ineerin* In1orma)ion

C)DIC ill provide the folloing infor"ation hich ill 'e revieed '(Bechtel-Dav(

• )etallurgical testor, data

• Conceptual process flosheets

• $rocess design data input regarding plant capacit(

• Soils percolation tests for septic s(ste": tailings da"s: etc.

• $lans of e>isting facilities and utilities in pro%ect area

• nviron"ental studies

•

olcanogenic data• +ssess"ent of geological data ?ris,@

• )eteorological data

%:; PROJEC AREAS

!he 'atter( li"it of the sulphide process plant enco"passes the pri"ar( crushingof R) ores ?'oth sulphide and o>ide@: coarse ore stoc,pile: pri"ar( grinding:flotation: regrinding: tailings disposal: deliver( of sulphide concentrate to port:filtration: concentrate storage and concentrate loadout. It is 'ro,en don into thefolloing areas

Area -%- !eneral

$ro%ect plot plansDesign criteriauip"ent listseneral specificationsuip"ent specificationsStandardsControl philosoph(Studies

Area %-- Sulphi'e Plan)

110 Crushing and Conve(ing - 6%ina

Du"p poc,etRoc, 'rea,er $ri"ar( crusher Coarse ore conve(ing

120 Crushing and Conve(ing - Rosario ?uture -- not part of scope@





23132-DB-1001Rev.1

130 Coarse re Storage and Reclai"

eed and shuttle conve(orsStorage stoc,pileReclai" feedersConve(ors

1#0 $ri"ar( rinding Circuit

S+ "illBall "illC(clonesC(clone feed pu"ps

1# $e''le Crushing Circuit ?uture -- provide space for installation@

10 lotation Circuit

Rougher flotation cellsRegrind "ills and c(clonesirst cleaner flotation cellsCleaner-scavenger flotation cellsSecond cleaner colu"n cells!ailings retreat"ent c(clones!ailings retreat"ent cells

1*0 Reagent 7andling and Distri'ution

/i"e storage: sla,ing and )/ distri'utionlotation reagent storage: "i>ing: and distri'utionlocculant storage: "i>ing and distri'ution

180 Concentrate !hic,eners

!hic,ener ra,e "echanis"s !hic,ener tan,s 6H and H pu"p s(ste"s

140 !ailings Disposal and 9ater Reclai"





23132-DB-1001Rev.1

141 !ailings !hic,eners

!hic,ener ra,e "echanis"s!hic,ener tan,s

142 !ailings !ransport

!ailings c(clonesine tails launder Coarse tails pu"ping

143 !ailings Da"

Da" all

/iningsSeepage collection

14# 9ater Reclai"

BargeBooster pu"ps$ipeline

Area 3-- Con+en)ra)e Pipeline

210 Concentrate Slurr( Storage

Storage tan,s +gitators

220 Concentrate $u"ping

Charge pu"ps)ainline pu"ps

230 Concentrate $ipeline: alve and Cho,e Stations

$ipelinealve stations

Cho,es





23132-DB-1001Rev.1

Area 9-- Por) Si)e #a+ili)ies

310 Concentrate Reception: Deatering and iltration

Concentrate thic,ener !an,s

+gitatorsiltersCo"pressors

320 Concentrate Storage and Reclai"

Stoc,pileReclai" unit

Conve(orsSa"pling s(ste"

330 Concentrate Ship /oader

3#0 )arine acilities

+pproach ar"Doc,DolphinsFavigation aids

30 9ater !reat"ent and Disposal

iltrate treat"entiltrate pipelinevaporation ponds

3*0 $ort 6tilities and Infrastructure

$oer suppl(/a'orator($ort offices9ater suppl(Roads

Area <-- H4'rome)allur*i+al Plan) O?i'e Plan)B

Refer to the Design Criteria. Fo 23132-DB-2001





23132-DB-1001Rev.1

Area ;-- U)ili)ies

10 )ain Su'station

20 $oer Distri'ution

Su'stationsIn-plant electrical poer and distri'ution"ergenc( poer

30 9ater Suppl( and Distri'ution

9ell pu"psSurge tan,s

Booster pu"psverland pipeline9ater !reat"ent

Area 0-- In1ras)ru+)ure

*10 eneral Infrastructure

+ccess roadIn-plant roadsSite preparationRail spur and sidingCo""unication s(ste"Kard lightingire protectionSeer s(ste"s$lant offices$lant la'orator(ChangehouseCentral control roo"/unchroo")edical facilities





23132-DB-1001Rev.1

*20 9or,shops and 9arehouses

!ruc, "aintenance shopeneral "aintenance shopsConcentrator shopS-9 plant shop/ight vehicle shop9arehouse and officeenced storage (ard

*30 $er"anent Ca"p

7ourl(-paid housingSalaried housing

CafeteriasRecreation facilities!ransport ter"inal

*#0 +irstrip

*0 $lant +ccess Roads

Area 5-- Mo@ile e(uipmen)

Area =-- emporar4 #a+ili)ies

Construction ca"p!e"porar( poer

Construction euip"ent

3:- PROCESS SUMMAR7

3:% Des+rip)ion

!he Collahuasi Copper $ro%ect is located near 6%ina: eastHsoutheast of Iuiue innorthern Chile. It is oned '( )inera )antos )inorco /tda. and alcon'ridgeChile: S.+.. !he propert( is operated on 'ehalf of the ners '( Co"pa<;a)inera Do<a In=s de Collahuasi: S.+. !he pro%ect consists of "ining

appro>i"atel( 2* "illion tons of copper ore per (ear '( open pit folloed '(co""inution and flotation for the sulfide "inerals to produce concentrateL andacid heap leaching and production of copper cathodes in a solvente>tractionHelectroinning ?SH9@ plant for o>ide "aterials.

!o separate porph(r( copper ore 'odies situated 10 ," apart have 'eenoutlined. !he estern Rosario deposit has a resource of over one 'illion tons ofcopper grading appro>i"atel( 1.1M Cu and is "ade up of various ore t(pes





23132-DB-1001Rev.1

including o>ides: secondar( enrich"ent: and pri"ar( protore. !he near'( 6%inadeposit to the east is esti"ated to contain appro>i"atel( 10 "illion tons of

secondaril(-enriched chalcocite ore grading 1.8M Cu. !he secondar( enrich"entis underlain '( a pri"ar( protore resource: the sie of hich is a'out *00 "illiontons at 0.4M Cu. 7uinuintipa: located est of Rosario: is an o>ide deposit ith 4"illion tons grading 1.#M Cu.

!he pro%ect is a grassroots venture that ill include the develop"ent of allproduction and ancillar( facilities: as ell as infrastructure such as ater andpoer suppl(: port facilities: and staff housing.

9hen production starts in 1554: Collahuasi ill 'e one of the largest copper "inesin the orld.

pen-pit "ining "ethods ill 'e e"plo(ed: starting ith the 6%ina ore 'od(: hichis located at #:#00 ".a.s.l. +fter * (ears: production ill start at the ad%acentRosario ore 'od(: hich is located at #:*00 ".a.s.l.

!he current 2-(ear "ine plan is 'ased on re"oving appro>i"atel( 12# "illiontons of sulfide ore at a grade of 1.8*M copper: and 2* "illion tons of o>ide and"i>ed ore at an average grade of 1.20M copper fro" the 6%ina ore 'od(.$roduction ill then shift to Rosario: here #23 "illion tons of sulfide ore at agrade of 1.12M copper: and 1 "illion tons of o>ide and "i>ed ore at an averagegrade of 1.3M copper ill 'e "ined. In addition: 8.** "illion tons of o>ide oregrading 1.#M copper ill 'e "ined fro" 7uinuintipa.

In the process of aste roc, re"oval: sufficient copper o>ide ore ill 'eco"eavaila'le to support a che"ical leaching folloed '( solvent e>traction andelectroinning operation to produce 0:000 tons per (ear of high-grade cathodecopper for 10 (ears.

Bench-scale flotation testing has shon that all copper sulfides can 'e readil(concentrated '( using standard flotation technolog(. Copper sulfide ore ill 'etreated in a flotation concentrator at a rate of *0:000 tons per da( to produce anaverage 3#:000 tons of fine copper per (ear in concentrate for the first si> (ears:folloed '( 22#:000 tons the ne>t 15 (ears.

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23132-DB-1001Rev.1

3:%:% Pro>e+) Philosoph4

Collahuasi is co""itted to developing a safe and environ"entall( sound pro%ect:e"plo(ing highest ualit( design criteria and technolog(: "ini"iing ater and"anning reuire"ents to (ield a unit cash operating cost in the loer tercile of theindustr( cost curve.

!o achieve this goal: it is i"perative that during all stages of pro%ect develop"ent:construction and operation: ever( design 'e tested against the folloing criteria

• )a>i"ie safet( in all areas of the operation.

• )ini"ie the i""ediate i"pact on the environ"ent and prevent its long ter"

degradation.

• 6tilie euip"ent hich ill "ini"ie "aintenance and ensure the specified

perfor"ance.

• )ini"ie ris, '( e"plo(ing proven technolog( herever possi'le.

• )ini"ie staff nu"'ers.

• /i"it pro'le"s associated ith or,ing at altitude.

• $roduce high ualit( products.

• /i"it capital e>penditure ithout loering ualit( standards.

• )ini"ie on-site construction activities to e>pedite the pro%ect co"pletion and

reduce on-site la'or ?"odular concepts@.

• )a>i"ie the re-use of ater on-site.

• Incorporate state-of-the-art energ( "ini"iing s(ste"s.

• )a>i"ie dust suppression in all parts of the operation.

• /i"it capital 'ut guard against under-design.





23132-DB-1001Rev.1

3:%:3 Sulphi'e Ore Pro+essin*

!eneral

+s a 'ase case: the concentrator operation is designed for a feed rate of*0:000 tons per da( throughout the life of the operation. 7oever: plantla(outs provide for a possi'le e>pansion at a later date. 9hile the sie ofthe e>pansion is not defined: it is recognied that an e>pansion to 50:000tons per da( or "ore is reuired to "aintain the initial fine copperproduction hen the Rosario pri"ar( ores are 'eing processed.$rovisions in the process design and plant la(out are included for thispotential e>pansion.

Crushin* an' Con&e4in*

Run of "ine ?R)@ sulphide ore is delivered to the pri"ar( crusherdirectl( fro" the "ine ith 2#0-ton "ine truc,s. !he R) ore is crushed'( a *0-inch > 45-inch g(rator( crusher to a top sie of appro>i"atel(300-"" and conve(ed overland to a covered coarse ore stoc,pile. + 'eltconve(or is provided under the crusher to feed onto the overlandconve(or. Dust suppression is provided at transfer points in the crushingplant and along the conve(ors.

!he R) o>ide ore is stoc,piled at the east side of the 6%ina pit and fro"there is fed '( front-end loaders and truc,s to *0-inch > 45-inch g(rator(crusher. R) is crushed to a top sie of appro>i"atel( 200-"" andconve(ed overland to the o>ide screening and crushing s(ste". !hissecond pri"ar( crusher is located ne>t to the sulphide crusher and isidentical in design. + '(pass conve(or is provided so that the o>idepri"ar( crusher can 'e used for sulphide ore in case of an e"ergenc(.

+n( oversie pieces in R) ore ill 'e 'ro,en up '( a roc,ha""er atthe pri"ar( crusher du"p hopper of each of the crushers.

S)ora*e an' Re+laim

!he overland conve(or discharges to a "ova'le conve(or: hich in turn:discharges the ore into the *0:000 t live capacit( covered stoc,pile. reis reclai"ed ith si> varia'le-speed 'elt feeders ?three for each S+ "ill

line@ onto the S+ "ill feed conve(ors. !he feeders are arranged in apattern to "ini"ie rathole for"ation and to "a>i"ie live capacit(. Dustcollection is provided in the reclai" tunnels near each feeder.

!rin'in*

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23132-DB-1001Rev.1

!he pri"ar( crushed ore is ground to flotation feed sie in to stages of et grinding ith to "ill lines. re is reclai"ed fro" the stoc,pile ith

varia'le speed 'elt feeders that discharge onto the "ill feed conve(ors.$ri"ar( grinding is ith to 8:400-,9 se"i-autogenous ?S+@ "illsfolloed '( secondar( grinding in 5:300-,9 'all "ills: one each per S+"ill. !he S+ "ill discharges to tro""el screens and the oversiepe''les ?N10 ""@ are rec(cled 'ac, to the S+ "ills ith conve(ors.!ro""el screen undersie flos '( gravit( to the S+ "ill dischargesu"p.

Secondar( grinding is conducted in a closed circuit ith c(clones. !hec(clone underflo is fed to the 'all "ill and the overflo discharges into aflotation feed distri'utor: hich splits the feed to to 'an,s of rougherflotation cells. !here are to distri'utors: one each per 'all "ill circuit.

Sulphi'e #lo)a)ion

verall the flotation circuit includes rougher flotation ith regrinding andto-stage cleaning of the rougher concentrate to a final concentrate.irst-cleaner tailings are scavenged and the concentrate is returned tothe regrind circuit. Rougher tailings are classified and the coarser fractiontreated ith an additional stage of flotation. !ailings retreat"entconcentrate also reports to the regrind circuit.

Rougher flotation is carried out in four ros of cells: each ith eightconventional 128-"3 tan, flotation cells. Rougher concentrate is 'lendedith cleaner scavenger and sand concentrates and pu"ped to the toclusters of regrind c(clones. !he c(clone underflo is split and pu"pedto the five regrind toer "ills: and the c(clone overflo flos '( gravit( tothe cleaner flotation feed pu"ps. !he regrind "ills discharge into theregrind c(clone feed su"p and is rec(cled 'ac, to the c(clones.

Reground concentrate is cleaned in three ros of four conventional 128-"3 tan, flotation cells. irst-cleaner tailings are scavenged in three rosof four cleaner-scavenger cells hich are a continuation of the cleaner ros. !he first-cleaner concentrate is pu"ped to five second-cleanercolu"n flotation cells. Second-cleaner tailings are recirculated to first-cleaner cells via the feed pu"ps. !he second cleaner concentrate flos'( gravit( to the concentrate thic,eners. Cleaner scavenger tailings are

sent to the tailings thic,ener.





23132-DB-1001Rev.1

Rougher tailings are pu"ped to c(clones for classification into a coarseunderflo fraction and a fine overflo fraction. !he underflo is treated

in a 'an, of three 128-"3

conventional tan, flotation cells. lotationconcentrate is pu"ped 'ac, to the regrind "ills and the tailings are sentto the tailings c(clones descri'ed 'elo.

!he flotation circuit produces a final copper concentrate containing'eteen 30M and 0M copper: depending on the t(pe of ore fed to theplant. verall copper recover( is e>pected to 'e 52M.

Con+en)ra)e Han'lin* an' Dea)erin*

inal flotation concentrate fro" the colu"n cells flos to to concentratethic,eners. Space for a third thic,ener is provided in case of a future

plant e>pansion. Concentrate thic,ener underflo is pu"ped to toagitated concentrate storage tan,s ahead of the concentrate pipeline.Concentrate thic,ener overflo flos '( gravit( to the concentratee"ergenc( pond and su'seuentl( to the reclai" ater reservoir.

!hic,ened copper concentrate at -*M solids is transported to the portsite at $unta $atache '( pipeline. Concentrate is ithdran fro" theslurr( storage tan,s '( the pipeline pre-charge pu"ps and fed to the to"ain charge pu"ps ?one operating: one stand'(@ hich pu"p theconcentrate to the high point est of concentrator: fro" hich it flo '(gravit( to the port. Cho,e and valve stations are strategicall( installedalong the pipeline to control flo and pressure in the line.

Concentrate discharges fro" the pipeline into a concentrate thic,enerfolloed '( transfer to agitated concentrate storage tan,s. Concentrateis pu"ped fro" these tan,s to three pressure filters: to operating andone stand'(. ilter ca,e: containing appro>i"atel( 4-5M "oisture isconve(ed to the concentrate storage 'uilding.

!he filterca,e is stored in an +-fra"e storage 'uilding hich contains a8:000-ton storage pile. + traveling tripper located in the pea, of the'uilding discharges the filterca,e along the pile.

$eriodicall(: the filter ca,e is reclai"ed and conve(ed to a ship loader.ro" here the concentrate is transferred into the hold of a ship for

transport to an overseas s"elter. + portal scraper reclai"er is used toreclai" the concentrate for shiploading. Conve(ors in series are used totransfer the concentrate fro" the reclai"er to the 1:30 tonsHhrshiploader. !he reclai" s(ste" includes provision for "anual reclai"ith front-end loader if necessar(. + sa"pler and an inventor(-t(pe 'elt-scale are provided for product loadout rate and ualit( control.





23132-DB-1001Rev.1

!he "arine facilities include the approach trestle: a uadrant shiploader:a service platfor": and necessar( service and protection dolphins and

"ooring 'uo(s. Favigational aids are provided as reuired. !he "arinefacilities are designed to handle vessels fro" 10:000 dt to *0:000 dt.!he vessel loading reuires arping operations.

Rea*en) S4s)ems

/i"e is fed as sla,ed li"e to the S+ "ills and regrind "ills to control p7in the flotation circuits. Sla,ed li"e is prepared '( grinding pe''le li"eith a vertical stirred 'all "ill. /iuid collector and frothers are received in'ul,: then "etered to the 'all "ill or flotation circuit ithout "i>ing. Dr(collectors ?>anthates@ are "i>ed ith ater folloed '( "etering to theflotation circuit. Si"ilarl(: flocculant is "i>ed ith ater and added to the

tailings thic,eners.

ailin*s Disposal

!he tailings strea"s produced in the concentrator are the tailingsretreat"ent flotation tailings: the tailings retreat"ent c(clone overflo:and the cleaner-scavenger tailings. !he tailings retreat"ent flotationtailings are c(cloned and the c(clone underflo ?sand fraction@ pu"pedto the tailings i"pound"ent for construction of the tailings da".

!he three fine tailings strea"s ?to c(clone overflos and the cleaner-scavenger tailings@ flo to four high-rate tailings thic,eners. !hic,enerunderflo is pu"ped to a gravit( launder that carries the slurr( to the

tailings disposal area located north of the concentrator. !hic,ener

overflo ater discharges '( gravit( to the reclai" ater reservoir and ispu"ped 'ac, to the concentrator to 'e added to the grinding andflotation circuits. Space is provided for additional tailings thic,eners forfuture e>pansion.

!he fine tailings launder is routed over a gentle slope to the tailingsdisposal site.

!he starter da" is constructed ith 'orroed "aterial on a leveled 'aseand has a capacit( for the first 14 "onths of operation at *0:000

tonsHda(. Diversion 'er"s and ditches on the uphill side of thei"pound"ent area divert stor" ater runoff.





23132-DB-1001Rev.1

Selective upstrea" deposition of the fine tailings along the da" controlsthe distri'ution of tailings into the 'asin and the location of the reclai"

ater decant pool: hich ill progressivel( "ove upstrea" on thenorthern edge of the 'asin. Barge-"ounted pu"ps rec(cle reclai"edater to an inter"ediate 'ooster pu"p station: hich pu"ps the ater tothe reclai" ater storage reservoir located near the tailings thic,eners.

!he tailings disposal s(ste" also includes a seepage collection facilit(donstrea" of the da". !he seepage ater is pu"ped 'ac, to theinter"ediate 'ooster pu"p station.

+t the ti"e of plant closure: the entire tailings i"pound"ent area ill 'ecapped ith a la(er of coarse roc, to prevent ind erosion of the fine-grained surface "aterial. !he diversion ditch and 'er" ill 'e left in

place to divert runoff fro" the area.

,a)er S4s)ems

9ater for the sulphide plant consists of fresh ater and reclai"ed ater.!o fresh ater reservoirs are provided est of the plant to suppl( ater '( gravit( to the plant. 9ater reclai"ed fro" the concentrate and tailingsthic,eners and fro" the tailings i"pound"ent is stored in a third reservoir located near the tailings thic,eners.

resh ater is pu"ped fro" ells in the Coposa 'asin to the storagereservoirs at the plant. Distri'ution to the plant includes ater reuiredfor process needs in the o>ide and sulphide plants: as ell as ater reuired for the "ine: pota'le ater and fireater. or the sulphide plant:fresh ater is used for gland seal ater: reagent "i>ing: cooling aterand other process reuire"ents. +ll ater reuired for the o>ide plantco"es fro" fresh ater sources. !his includes ater added to theagglo"erators: heaps: solution ponds: and SH9 plant.

!hic,ener overflo ater flos '( gravit( to the reclai" ater reservoirand tailings i"pound"ent reclai" ater is pu"ped. ro" the reservoir

the ater is pu"ped into a distri'ution "anifold that is connected to a head tan, installed est of the coarse ore stoc,pile. !he reclai" ater isused in the grinding and flotation circuits. !he head tan, gives a s"all

surge capacit( ?1 "inutes@ hile regulating the pressure on thedistri'ution "anifold.





23132-DB-1001Rev.1

3:%:9 On/Si)e In1ras)ru+)ure

Poer Suppl4

$oer de"and at site is su'stantial: reuiring a 100-)9 suppl(L andpoer is supplied '( a ne poerline connected to the northern Chileangrid. Connection to the grid is fro" the su'station at /aguna via adou'le-circuit: 220-, line: 120 ," in length: ter"inating at a su'stationat site ith e>pansion capa'ilit(. Site-specific altitude: ind: andte"perature considerations encourage the use of a dou'le circuit toensure a relia'le poer suppl(.

Initial poer reuire"ents during construction and e"ergenc( poerreuire"ents ill 'e provided '( diesel generators.

,a)er Suppl4

9ater ill 'e pu"ped fro" 1# ells located in the Coposa 'asin into acollection tan, and then pu"ped through a 'uried pipe to a fresh aterreservoir located at the plant site. C)DIC ill locate: drill and case eachell. $u"ps ill 'e installed in each ell and connected to a pipenetor, that 'rings the ater to the collection tan,. ne ell ill 'ededicated to suppl( ater to the construction and per"anent ca"ps.

Camp

+ ca"p to acco""odate operating staff and contractors is located at theSalar de Coposa: appro>i"atel( 1 ," fro" the plant site. Coposa offerspleasant surroundings and a favora'le elevation of 3:400 ".a.s.l. !heper"anent ca"p ill 'e designed to provide rest and recreationalfacilities that ill "itigate the hardships of the site. For"al or, patternill 'e seven 12-hour da(s at site and seven da(s off. +cco""odationsare designed to have to people sharing one uarter. In general: theroo" ill onl( 'e occupied '( one person: the other person 'eing onhisHher off turn. ach roo" has its on 'athroo": ith personal shoer:sin, and toilet. !he dor"itories: dining and recreational facilities ill 'e'uilt together.

Roa's

Roads in the i""ediate vicinit( of the plant and to the ca"p are providedith a full( paved surface. $ar,ing areas around 'uildings: arehouse:railroad station: and ad"inistration are also surfaced. +ll other roads:including a connection to the Oue'rada Blanca road: are graded gravel.

In1ras)ru+)ure 2uil'in*s





23132-DB-1001Rev.1

!he "ine truc, "aintenance shop and ash shop are located north ofthe 6%ina pit. !he truc, shops are designed for servicing up to 300-ton

capacit( "ine truc,s. !he "ine truc, "aintenance 'uilding contains the"ain truc, service 'a(s: and a lu'e: fuel and "echanical elding andelectrical "aintenance 'a(. +lso included in the co"ple> are offices:change roo": training roo": and lunch roo"s. Fe>t to the "ain 'uilding:there is an outside area for tire re"oval and storage.

!he central "aintenance co"ple> is located north of the sulphideconcentrator. It contains the central "aintenance shops and the centralarehouse. 9ithin the central shops are seven individual shops. !heseare

• )achine shop

• 9elding shop• $ipe shop

• Ru''er shop

• Building and grounds shop

• lectric shop

• )echanical support shop.

• Instru"ent shop.

!he light vehicle "aintenance shop is located in the central "aintenanceco"ple>.

)aterial and co"ponents delivered to the central arehouses ill 'ereceived: inspected: entered into inventor(: classified and stored indesignated areas. +n esti"ated #0:000 ite"s ill 'e "aintained in stoc,.!his ill include consign"ent stoc,s '( supplier and "aintenancecontractors. !he central arehouse is arranged for drive-inHdrive-outservice to custo"ers. !he fenced-in (ard: for uncovered outside storage:is located ad%acent to and northest of the central arehouse.

+n independent concentrator "aintenance shop is also provided. It islocated near the concentrator.

!he principal other on-site infrastructure 'uildings are

• ate house and truc, scale at the Oue'rada Blanca road

• )ain entrance and truc, scale at the $oo +l"onte road

• 6%ina "ine la'orator( and offices

• )ill office 'uilding for sulphide concentrator

• +d"inistration 'uilding: and clinic

• )ain la'orator(

• "ergenc( vehicles garage





23132-DB-1001Rev.1

• >ide plant offices

• $ort la'orator( and offices

La@ora)ories

!he pro%ect includes si> la'oratories as follos

• )ain la'orator(

• )ill "etallurgical la'orator(

• S-9 la'orator(

• )ine la'orator( - 6%ina )ine

• )ine la'orator( - Rosario )ine ?e>isting: ith future e>pansion@

• $ort la'orator(

!hese la'oratories are used to anal(e sa"ples collected fro" varioussources. or the sulphide concentrator: dail( and shift sa"ples arecollected fro" "etallurgical full-strea" sa"plers and fro" the on-strea"anal(er ?S+@ s(ste" for "etallurgical control. !hese sa"ples aredelivered to the sa"ple preparation la'orator(. +fter preparation:representative cuts of each sa"ple are ta,en to the "ain la'orator( for further processing and anal(sis. + et "etallurgical la'orator( isavaila'le to perfor" et "etallurgical testing such as grinding andflotation.

>isting pilot-plant facilities are used for sulfide and o>ide leach testing.

Communi+a)ions

+ state-of-the-art netor, to serve the teleco""unication needs of theCollahuasi $ro%ect is planned. !his s(ste" is capa'le of carr(ing all ,indsof co""unication services to ever( corner of the organiation: includingvoice: data: facsi"ile: i"age audio: and video. It also serves to connector integrate other specialied teleco""unications s(ste"s traditionall(loosel( coupled: such as process control: SC+D+: and truc, dispatch.

Se+uri)4

!he "ain facilities are fenced ith a securit( gate?s@. $ipeline patrol is

regular or on an ad-hoc 'asis: as needed.





23132-DB-1001Rev.1

Heal)h an' Sa1e)4

+ s"all e"ergenc( hospital is staffed ith a resident doctor andassociated "edical personnel. + roo" in the "ain ad"inistration 'uildingis dedicated to safet( "eetings: de"onstrations: and instruction. Sea*e an' !ar@a*e Disposal

!o "ain seage treat"ent plants are provided one to serve theprocessing facilities and one to serve the ca"p.

9here applica'le: septic tan,s and drains are used. Re"ote areas: suchas aste-roc, du"ps or the tailings da": are served '( che"ical toilets.

ar'age is sorted for "etal: glass: and paper for rec(cling. Re"ainingindustrial gar'age is disposed ithin special poc,ets in the aste-roc,du"ps and do"estic aste disposed of in sanitar( landfill sites.

3:%:< O11/Si)e In1ras)ru+)ure

Mine Si)e A++ess Roa'

+ ne "ine site access road ill 'e 'uilt north of the "ine site through$oo +l"onte and !a"'illos. !he Oue'rada Blanca road ill 'e usedinitiall( hile the $oo +l"onte - !a"'illos road is under construction.Fine "onths have 'een scheduled to co"plete the construction andupgrading of the road: therefore the road ill not 'e availa'le for generaluse until the end of 155*. !his ill 'e in ti"e for the transportation of"ining and plant euip"ent and 'ul, "aterials and ahead of the "ain'uildup of or,ers.

!he road 'eteen $oo +l"onte and the "ine site ill 'e constructedith a total idth of 5 ": a 8-" running section and 1-" shoulders on'oth sides. It ill have a "a>i"u" gradient of 4M and a "ini"u" designspeed of *0 ,"Hh. !he running surface ill 'e paved.

arious in-plant roads ill 'e developed: including a light vehicle road anda "ine truc, road 'eteen 6%ina and 7uinuintipa. !he light vehicle roadill also connect to the Oua'rada Blanca road here a securit( gate ill

'e provided.





23132-DB-1001Rev.1

Railroa'

+n old 1.0-" gage railroad to the "ine site e>ists. !his railroad isgenerall( in poor condition and ill reuire upgrading to handle asu'stantial increase in service. In the 6%ina 'asin: the railroad "ust 'ererouted around the leach facilities.

Coposa Airs)rip

+n airstrip ill 'e constructed in the Coposa 'asin hich is capa'le ofhandling tur'o prop aircraft.

Por) In1ras)ru+)ure #a+ili)ies

$ort facilities are located at Caleta $atache: hich is * ," south ofIuiue. !he paved national higha(: Fational Route 1: runs due southfro" the cit( of Iuiue past $unta $atache. !his road ill 'e used '( allconstruction and operating personnel for access to the site. + neinterchange and unpaved road: appro>i"atel( 1.-,"-long: ill 'econstructed for access to the port site.

!he port support facilities include a guardhouse and a 'uilding housingoffices: a la'orator(: change roo"s: and dining facilities. +n additionals"all 'uilding is provided ith offices for custo"sHi""igration: vessel andshore cre use. + "aintenance shop: electrical euip"ent roo": andseveral outdoor tan,s are provided: as ell as a flag staff for "ariti"esignaling.

$art of the filtrate: a sufficient a"ount to provide pota'le ater needs: istreated in a reverse os"osis plant. !he 'alance of the ater is pu"ped ashort distance inland and disposed of in four evaporation ponds.

I(ui(ue #a+ili)ies

+d"inistrative and support activities for the pro%ect ill 'e housed inIuiue.

Assem@l4 7ar'

+n asse"'l( (ard ill 'e developed at $oo +l"onte !a"'illo. !hisfacilit( ill 'e used to preasse"'le euip"ent and "aterials to "a>i"u"e>tent possi'le prior to transporting the" to the %o' site.

Permi))in*





23132-DB-1001Rev.1

+ssistance to C)DIC for o'taining all necessar( environ"ental:construction and 'uilding per"its is provided.

Collahuasi\Docs\Engin\gral\Process\des-crit\db1001r1.doc Sheet 2* of 5




23132-DB-1001Rev.1

3:3 2lo+ #lo Dia*ram

ROM ore

Primar4Crusher

Re*rin' -#

C4+lonesS)o+pil

eU#

Re*rin'

SA! Mills

Mill

-# C

C4+lone #lo)a)ioU#

2all C Cleaner

Mill S+a&en

Rou*her C

#lo)a)ionO# San' C

C4+lone Con+en)

ra)eU# hi+ener San' C

#lo)a)ion Slurr4S)ora*e

O# ailin*s Pipeline

C4+lone

U# Con+en)

ailin*sPumps

hi+ener

ailin*s Slurr4

#il)er ailin*s

hi+en S)ora*e

ailin*s2asin

Shiploa'er

9:- MEASUREME" U"IS A"D S7M2OLS





23132-DB-1001Rev.1

!he )odernied )etric S(ste" of "easure"ent used in this stud( and report are inaccordance ith ?6S+@ +S!) 340: Standard $ractice for 6se of the International S(ste"

?SI@ of 6nits. + period: not co""a: is used as the deci"al "ar,er. + s"all space ?ith noco""a@ is used to separate groups of three integers.

!he reference conditions for gas volu"e are 0°C and 101.32 ,$a: corresponding ith a

"olar ?ideal@ gas volu"e of 22.#1# "3H?,g×"ol@. !his is shon as "3 ?nor"al@E or

a''reviated to ?non-SI@ F"3.E !he unit tE rather than )g: is used for 1 000 ,g "ass.

SI Base 6nits ?di"ensionall( independent@

)easured +ttri'ute 6nit S("'ol

/ength "eter "

)ass ,ilogra" ,g!i"e second slectric current a"pere +!her"od(na"ic te"perature Pelvin P

+"ount of su'stance "ole "ol/u"inous intensit( candela cd

$er"itted Base 6nits

)easured +ttri'ute 6nit S("'olDefinition

!i"e "inute "in*0 shour h*0 "inda( d2# h?calendar@ (ear (3* d

)ass "etric ton t?1 000 ,g@

?Fote SI prefi>es: as listed 'elo: are used onl( ith SI 'ase units. It is incorrect to use

these prefi>es ith the per"itted 'ase units.E@





23132-DB-1001Rev.1

SI $refi>es ?selected list onl(@

)ultiplication actor $refi> S("'ol

1012 tera !105 giga 10* "ega )103 ,ilo ,102 hecto h10 deca da10-1 deci d10-2 centi c

)ultiplication actor $refi> S("'ol

10-3 "illi "10-* "icro 110-5 nano n10-12 pico p

!he prefi>es and prefi> s("'ols are used ith the SI 'ase units and derived units - ith thee>ception of ,g. !he 'ase "ass unit: ,g: alread( has a prefi>: and the SI prefi>es are thenapplied to the unit gra" ?g@. In this "anner: the s("'ol for "etric ton is )g: hoever in thiscriteria the per"itted alternate: t as listed a'ove: is used. !he +S!) per"itted for" 9h is

used rather than 9×h.

Derived SI 6nits of Special Fa"e

)easured +ttri'ute 6nit S("'ol or"ula

reuenc( ?periodic@ hert 7 1Hs

orce neton F ,g×"Hs2

$ressure: stress pascal $a FH"2

nerg(: or,: heat t(. %oule Q F×"

$oer: radiant flu> att 9 QHs

Ot(. of electricit( coulo"' C +×s

lectric potential: e"f volt 9H+lectric capacitance farad CH

lectric resistance oh" Ω H+lectric conductance sie"ens S +H

)agnetic flu> e'er 9' ×s

)agnetic flu> densit( tesla ! 9'H"2

Inductance henr( 7 9'H+Celsius te"perature degree Celsius oC P-283.1$lane angle radian rad di"ensionlessSolid angle steradian sr di"ensionless

/u"inous flu> lu"en l" cd×sr





23132-DB-1001Rev.1

Illu"inence lu> l> l"H"2

+ctivit( ?of a radionuclide@ 'ecuerel B 1Hs

+'sor'ed dose gra( ( QH,gDose euivalent sievert Sv QH,g

6nits in 6se

)easured +ttri'ute 6nit S("'ol Definition

$lane angle degree o 1o G ?πH140@ rad

"inute 1 G ?1H*0@o

second A 1A G ?1H*0@olu"e liter / 1 / G 10-3 "3

+rea hectare ha 1 ha G 10# "2

nerg( ?electrical@ ,iloatt-hour ,9h 1 ,9h G 3.* )Q

So"e Co""on Derived 6nits

)easured +ttri'ute 6nit S("'ol

+cceleration "eter per second suared "Hs2

+ngular acceleration radian per second suared radHs2

+ngular velocit( radian per second radHs +rea suare "eter "2

Concentration "ol per cu'ic "eter "olH"3

Current densit( a"pere per suare "eter +H"2

Densit( ?"ass@ ,ilogra" per cu'ic "eter ,gH"

3

lectric flu> densit( coulo"' per suare "eter CH"2

ntrop( %oule per Pelvin QHP7eat capacit( %oule per Pelvin QHP7eat flu> densit( att per suare "eter 9H"2

/u"inance candela per suare "eter cdH"2

)agnetic field strength a"pere per "eter +H")olar energ( %oule per "ole QH"ol

)olar entrop( %oule per "ole Pelvin QH?"ol×P@

)olar heat capacit( %oule per "ole Pelvin QH?"ol×P@

)o"ent of force neton "eter F×"

$er"ea'ilit( ?"agnetic@ henr( per "eter 7H"

$oer densit( att per suare "eter 9H"2

Specific heat capacit( %oule per ,ilogra" Pelvin QH?,gP@Specific energ( %oule per ,ilogra" QH,g

Specific entrop( %oule per ,ilogra" Pelvin QH?,g×P@

Specific volu"e cu'ic "eter per ,ilogra" "3H,gSurface tension neton per "eter FH"

!her"al conductivit( att per "eter Pelvin 9H?"×P@

!her"al conductance att per suare "eter Pelvin 9H?"2×P@

velocit( "eter per second "Hs







23132-DB-1001Rev.1

<:- SIE DAA

<:% Si)e Lo+a)ions

!he Collahuasi copper deposit is located in the irst Region of Chile near 6%ina:20 ," east-southeast of the ton of Iuiue: 1 ," est of the ChileHBoliviafrontier and 10 ," east of the e>isting Oue'rada Blanca copper "ine. !his region,non as the Chilean +ltiplano: a high plain characteried '( 'road valle(s'ounded on the east '( a chain of (oung volcanoes: for"ing the crest of the

+ndean Cordillera. !he deposit supported a 'ustling "ining ton in the earl( 20thCentur(: hich as serviced '( a raila( through 6%ina.

$lant "ean elevation is appro>i"atel( #:#00 " a'ove sea level. !he proposedlocation is at F8*42000 and 3400 on geodetic co-ordinates. !he nearest

drainage and ater suppl( is the )ichincha 'asin. !he "a%or source of ater isfro" the Coposa 'asin hich is appro>i"atel( 20 ," north of the plant site.

egetation in the "ine area is sparse: 'ut a large variet( of 'ird species populatesthe near'( salars and groups of lla"as: vicunas and vicachas are present.

!he port facilities: including the filter plant: concentrate storage facilities and"arine ter"inal: are located at $unta $atache appro>i"atel( * ," south ofIuiue. !he plant site is connected to the port site ith a 200 ," slurr( pipeline.

<:%:% ranspor)a)ion #a+ili)ies

!he site is presentl( reached '( road fro" the $an +"erican 7igha(?Route @. !his is a high-ualit( asphalt higha( ith a heav( transportrating. +n upgraded road as 'uilt for the near'( Oue'rada Blancapro%ect and this road is availa'le to C)DIC. 7oever: this road has "an(hairpin 'ends in its final section and can 'e closed '( 'ad eather. +ne route via $oo +l"onte and !a"'illos ill 'e 'uilt to handle theheav( construction traffic and provide a per"anent road access to the"ine site. Fo difficulties in road transportation of nor"al euip"ent ite"sare foreseen.

!ransportation arrange"ents 'eteen ca"ps: plant site: and Iuiue ill'e '( private vehicles or 'us. !here are car rental facilities in Iuiue forthe "a%or car rental co"panies.

Rail transportation is availa'le to the rail head at 6%ina '( errocarril de +ntofagasta Bolivia. Rail ship"ents ill 'e restricted to ite"s # " highand # " ide.

!he nearest air freight ter"inal is at Iuiue: here there is a co""ercialairport ith connections to dail( flights to principal Forth +"erican anduropean cities via Santiago. +n unpaved: 2.-," airstrip at Oue'rada





23132-DB-1001Rev.1

Blanca serves 'oth properties. !he elevation of this airstrip and possi'leclosure '( fog "a,es its use unrelia'le and availa'le onl( to restricted

t(pes of aircraft. + ne airstrip is scheduled to 'e 'uilt near theper"anent ca"p located on the estern edge of the Coposa 'asin.

)a%or port facilities are located in Iuiue: hich is euipped ith a harf capa'le of handling ships up to a 30:000-t capacit(. !here are e>istingshiploading facilities at a salt ter"inal at $atillos *0 ," south of Iuiue.I"ported euip"ent ill 'e unloaded at Iuiue: +ntofagasta: oralparaiso ?ith on-ship"ent to the north@ and sent '( truc, andHor rail tosite. +ntofagasta has a deep-ater port ?10 "@ ith full crane facilitiesand harves of 18- to 220-" acco""odation for vessels up to 80:000 t?D9!@.

<:%:3 Roa' Dis)an+esF m

Site - 6%ina 6%ina - Cala"a 226%ina - +ntofagasta #806%ina - !ocopilla3506%ina - Iuiue 216%ina - $unta $atache 28Site - Salar de Coposa 2*Site - Salar de )ichincha 5

<:%:9 Si)e A++ommo'a)ion

isitors to the Collahuasi site "a( drive fro" Iuiue: Cala"a: !ocopilla:or +ntofagasta: here hotel acco""odations are availa'le. C)DICprovides li"ited guest-house acco""odation in the ca"p near theRosario "ine site. + construction ca"p ill 'e constructed and illprovide so"e facilities for visitors. 9hen the per"anent ca"p 'eco"esavaila'le: additional acco""odations ill 'e availa'le.

<:3 Si)e opo*raph4

!he plant area is located to the north of the 6%ina open pit in "ountainous terrainin the high +ndes on a dissected plateau at elevations ranging fro" #:300 to#:*00 ". !he process plant topograph( is relativel( flat ith s"all undulating hills.

)ost of this area ill allo plant location on cut areas.

<:9 Me)eorolo*i+al Da)a

!he "eteorological design data can 'e found in the latest revision of the Civil:Structural and +rchitectural Design Criteria: 23132-DC-#001.





23132-DB-1001Rev.1

<:< Seismi+

or design purposes: the site is classified for the pro%ect as 6BC Tone #: 'ut theorigin of seis"icit( is the su'duction ?instead of transduction@ of the $acific $late.)ost "a%or earthua,es occur offshore ith intensities up to 4. Richter. Seis"icris,: defined as the pro'a'ilit( of occurrence of an earthua,e of "agnitude 8.Richter ith an acceleration greater than or eual to 0.1 g during 1 (ear: isassu"ed at 20M ith a return period of 30 (ears. Significant earth tre"ors ofintensit( up to *. Richter occur ever( #-10 (ears.

+nother source of vi'ration at the "ine areas is 'lasting. !his has "ini"al effects.

;:- E"6IRO"ME"AL CRIERIA

See nviron"ental I"pact +ssess"ent report for the Collahuasi $ro%ect filed ithCR)+ on Qune 22: 155

0:- ECO"OMIC CRIERIA

0:% E&alua)ion o1 Al)erna)i&es

valuation of "a%or process alternatives are e>cluded fro" this or,.

0:3 Cos)/2ene1i) Anal4sis

Cost-'enefit engineering choices ill 'e 'ased on capital and operating costpara"eters developed in the 'asic engineering feasi'ilit( stud(. !he unit costsare presented in the inal Report.: +ppendices and 7.

5:- DESI!" CRIERIA RE#ERE"CE LIS

eneral Specification D-01 Rev.1L Collahuasi Copper $ro%ect easi'ilit( Stud(.C;a. )inera Do<a In=s de Collahuasi S.+.

Co"pa<ia )inera Do<a In=s de Collahuasi: Copper $ro%ect easi'ilit( Stud(: Qul(155. olu"es I to I and +ppendices + to 7.




Design CriteriaSulphide Concentrator & Infrastruct

23132-DB-1Rev

6nits Fo"inal Design Code

=:- PRODUCIO" SUMMAR7

!he overall "aterial 'alance andprocess design calculations for theconcentrator are 'ased on a no"inalthroughput of *0:000 dr( tHd of ore:or a no"inal throughput of 2:884 tHh'ased on 50 percent availa'ilit(.

+

=:% Annual Pro'u+)ion Parame)ers

Run-of-"ine copper ore:average

tH( 21 500 000

Concentrate production tH( 48* 000

=:3 O&erall 2alan+e

eed to pri"ar( crushingcircuit: dr( tHh 3 12 4*0 eed to S+ "ills: dr( tHh 2 884 3 #82 eed to pri"ar( c(clones: dr( tHh 11 112 13 444

eed to rougher flotation: dr( tHh 2 884 3 #82 Rougher concentrate: dr( tHh 353 45 eed to sand flotation: dr( tHh 8*0 5#5 Sand concentrate tHh #* *4 eed to first cleaner flotation: dr( tHh 42 1 288 eed to cleaner-scavengerflotation: dr( tHh 4* 485 Cleaner-scavengerconcentrate: dr( tHh 24 345 eed to second cleanerflotation: dr( tHh 2** 354 eed to concentrate pipeline: dr( tHh 111 1#4

eed to concentrate filters andstorage: dr( tHh 111 1#4 Coarse tailings product: dr( tHh *#0 400 ine tailings product: dr( tHh 2 028 2 33

=:9 Opera)in* S+he'ule




23132-DB-1Rev


4.3.1 Crushing

+vaila'ilit( M 40 +$lant operating schedule

Da(s per (ear d 3* +Da(s per ee, d 8 +Shifts per da( no. 2 +7ours per shift h 12 +7our per (ear h 8 004

4.3.2 Concentrator and !ailings Disposal


Da(s per (ear d 3* +Da(s per ee, d 8 +Shifts per da( no. 2 +7ours per shift h 12 +7our per (ear h 8 44#

4.3.3 $ipeline


Da(s per (ear dH( 3* +Shifts per da( no. 2 +7ours per shift h 12 +7our per (ear h 8 44#

4.3.# iltering and Storage


Da(s per (ear dH( 3* +Shifts per da( no. 2 +7ours per shift h 12 +7our per (ear h 8 44#

4.3. $oer /ine

+vaila'ilit( M 100 +

Schedule




23132-DB-1Rev


Da(s per (ear dH( 3* +7ours per da(hHd 2# +

=:< Desi*n #a+)ors 1or E(uipmen)

!he folloing design factors are appliedin general for the euip"ent siing +U Fo"inal ?or Balance@ flo rate design factor G design flo rate V

$ri"ar( crushing 1.2Coarse ore conve(ing 1.2rinding circuit "aterial handling 1.2Rougher flotation 1.2inal "ill tailings 1.2Rougher concentrate 1.0Regrind 1.0Cleaner flotation 1.0Cleaner scavenger flotation 1.0Concentrate thic,ening at the "ine 1.0Concentrate slurr( storage at the "ine 1.0Concentrate slurr( pipeline 1.2Concentrate thic,ening at the port 1.2Concentrate slurr( storage at the port 1.2iltration 1.2

roth actors for pu"ps

selection and gravit( launder siing C

Rougher concentrate 2.0irst cleaner concentrate 2.0irst cleaner concentrate 2.0Second cleaner concentrate 2.0Scavenger concentrate 2.0Sand flotation concentrate 2.0Regrind circuit 1.Rougher tailings 1.2Cleaner scavenger tailings 1.2Second cleaner tailings 1.2

Sand flotation tailings 1.2




23132-DB-1Rev


.:- CHARACERISICS O# PROCESS #EED MAERIALS A"D CO"SUMA2LES

.:% Ore Classi1i+a)ion

5.1.1 )ineralog( of $rocess Ra )aterials +

)a%or t(pes Strong secondar( ?SC@9ea, secondar( on p(rite ?SC$@9ea, secondar( on chalcop(rite ?SCD@$ri"ar( ?$RI@

Su't(pes ithin )a%or t(pe 6%ina +ndesite ?+FD@Rh(olite ?RI@

$orph(r( 6%ina ?$6Q@

Rosario +ndesite ?+FD@Rh(olite ?RI@$orph(r( Ines ?$IF@$orph(r( Rosario ?$R@$orph(r( Collahuasi ?$C@

5.1.2 Che"ical Co"position of R) re

A&era*e Ore !ra'e

6%ina deposit ?sulphide ore@Cu ?total@ t M 1.8* +

Rosario deposit ?sulphide ore@Cu ?total@ t M 1.12 +

Mill Ore !ra'e

6%ina deposit ?sulphide ore@ MCu ?total@ +KearCo""issioning 1.*0 1 2.12

2 1.4# 3 1.82 # 1.88 1.5 * 1.#1

Rosario deposit ?sulphide ore@ MCu ?total@Kear




23132-DB-1Rev


* 1.#4 8 1.33

4 1.1 5 1.2210 1.1*

11 1.0512 1.2*13 1.0*1# 1.131 1.181* - 14 1.0415 - 21 1.121 - 2 0.5*

5.1.3 ther $roperties

Specific gravit(: average H 2.40 2.40 - 2.4 +

re "oisture content t M 2. 0.-3.0 +

R) ore sie distri'ution )a>i"u" lu"p sie: "" 2 000Design percentpassing 200 "" 2

+'rasion inde> +6%ina 0.0#*4 - 0.1418Rosario 0.0#51 - 0.2##2

I"pact or, inde>: +6%ina ,9hHst 2.2 - *.3Rosario ,9hHst #.5 - 4.

Rod "ill or, inde>: +6%ina ,9hHst 4.4 - 13.8Rosario ,9hHst 5.* - 12.#

Ball "ill or, inde>: +6%ina ,9hHst 8.5 - 1#.4

Rosario ,9hHst 8.* - 11.#

Corrected autogenous or, inde>?)ac$herson $rocedure@ +

6%ina ,9hHst 5.# - 1#.2Rosario ,9hHst 4.1 - 12.4




23132-DB-1Rev


.:3 Rea*en)s

5.2.1 /i"e

!(pe Burnt li"e B

Bul, densit(: ,gH"3 440-5*0 B

+ngle of repose: degrees 0 B

5.2.2 )eth(l Iso'ut(l Car'inol ?)IBC@

or" /iuid B

Densit( ,gH"3 403 B

iscosit(: c$ at 2WC 3.4 B

5.2.3 Dofroth 20

or" /iuid B

Densit( ,gH"3 543 B

iscosit(c$ at 2WC 12 B

5.2.# S 323 ?eth(l-isoprop(l thiocar'a"ate@

or" /iuid B

Densit( ,gH"3 55# B

iscosit( c$ at 2WC 254 B

5.2. S-113 ?isoprop(l >anthate@

or" Solid B

Densit( ,gH"3 1 30 B




23132-DB-1Rev


5.2.* S-11# ?iso'ut(l >anthate@

or" Solid B

Densit( ,gH"3 1 30 B

5.2.8 locculant - !ailings !hic,ener

!(pe +nionic pol(acr(la"ide D

or" Dr( B

Densit( ,gH"3 *0 B

%-:- MI"E

%-:% Mine E(uipmen)

Rotar( Drill t 0 +lectric Shovel - aste "3 0 +lectric Shovel - ore "3 2* +7aulage truc, t 214 +ront-end /oader "3 21 +!rac, Doer hp 00 +)otor rader hp 300 +9heel Doer hp #0 +

%%:- SULPHIDE PLA"

%%:% Crushin* an' Con&e4in* / U>ina

Roc, 'rea,er t(pe 7(draulic C

Crusher t(pe (rator( Ceed sie "a>i"u" "" 2 000 CCrusher design capacit(: dr( tHh 4*0 D

Sulphide crushing rate: dr( tHh 3 12 # 1**

Sulphide crusher open side setting "" 200 D

Sulphide dr( crushed ore 'ul, densit(olu"e calculations ,gH"3 1 *00




23132-DB-1Rev


9eight calculations ,gH"3 2 040

Sulphide product sie distri'ution )esh Sie ?""@ M $assing

Coarse ine30 100 100225 5* 5812 50 53102 84 48 8* * 42 1 #* 8# 2 2 * 15 20 0 13 1 #3

Crusher discharge conve(or:2.M "oisture tHh 3 20 4 20

Coarse ore conve(or:2.M "oisture tHh 3 20 4 20

%%:3 Crushin* an' Con&e4in* / Rosario #u)ureB

Coarse ore conve(or:2.M "oisture tHh 4 20

%%:9 Coarse Ore S)ora*e an' Re+laim

Stoc,pile feed conve(or:2.M "oisture tHh 3 20 4 20

Design )a>i"u" 4 20

+ngle of repose degrees 38 B +ngle of dradon: degrees #2 # D

Stoc,pile total capacit( t 150 000 +

Stoc,pile live capacit( t *0 000 +

Fu"'er of reclai" tunnels 2 C

Fu"'er of reclai" 'elt feeders ?per S+ "ill@ 3 C

Reclai" rate: dr(? per S+ "ill@ tHh 1 345 1 83*

Belt feeder: dr( ?per S+ "ill@ tHh #*3 1 83*

Belt feeder drive aria'le speed




23132-DB-1Rev


S+ "ill feed conve(or: dr( tHh 1 83* 2 #30

?includes rec(cle pe''les@

%%:< Primar4 !rin'in* Cir+ui)

Circuit feed rate ?total@: dr( tHh 2 884 3 #82

11.#.1 S+ )ill Circuit

S+ "ill feed ?each@: dr( tHh 1 345 1 83*

S+ "ill tro""el undersie 100M passing: "" 155M passing "" 1240M passing "" #

Design specific poer +Kear 1 ,9hHt 3.4#Kear 2 - 3 ,9hHt 3.5Kear # - 8 ,9hHt 3.5#Kear 4 - 2 ,9hHt .0#

S+ "ill design CFu"'er 2

)ill poer design factor 1.10

eed rate ?each:for euip"ent design@ tHh 1 24Specific poer ,9hHt .0#Connected poer?each: pinion shaft@ ,9 8 400Critical speed M 80-40Drive Ring gear !otal "ill volu"e:"a>i"u" M 30Ball charge: "a>i"u" M 1eed densit( M solids 80

)a,eup 'all sie "" 12




23132-DB-1Rev


S+ screen t(pe !ro""el C

$e''le recirculation s(ste" Conve(ors C

$e''le crushing $rovide space for future pe''le crushing circuit. +

11.#.2 Ball )ill Circuit$roduct sie:40M passing "icrons 11 - 10 +$roduct sie:M passing 8# "icrons *0 - * +

Design specific poer: ?$40 G 11 "icron@ +Kear 1 ,9hHt #.#1

Kear 2 - 3 ,9hHt .#3Kear # - 8 ,9hHt .5*

Design specific poer: ?$40 G 138 "icron@ +Kear 4-2 ,9hHt *.0

Ball "ill design CFu"'er 2

)ill poer design factor 1.10

eed rate ?each:for euip"ent design@ tHh 1 24Specific poer ,9hHt *.0

Connected poer ?each: pinion shaft@ ,9 5 300Drive Ring gear Critical speed: M *4 - 8Ball charge: ne liners M 3eed densit(: M solids 82)a,eup 'all sie "" *3-8

Ball "ill screen t(pe !ro""el C

C(clones CFu"'er of clusters

per "ill 2Fu"'er of c(clonesper cluster 12C(clone dia"eter "" **0C(clone feedpressure ,$a 100

C(clone circulating load M 300 300 C?underfloHoverflo ratio@




23132-DB-1Rev


C(clone feed pu"ps

Fu"'er per "ill: operatingHstand'( 2H0 CDrive aria'le Speed C

%%:; #lo)a)ion Cir+ui)

11..1 eneral lotation

7ead grade: total copper +6%ina ?average@ 1.8*Rosario ?average@ 1.126%ina ?)a>i"u" @ 2.*0

verall total copperrecover( M 52 +)ini"u" M 4)a>i"u" M 53

)etallurgical 'alance para"eters Ceed grade: M Cu 2.0Concentrate grade: M Cu #*Concentrate Cu recover( M 52

11..2 Rougher lotation

Rougher flotation feed

eed rate tHh 2884 3 #82 +

rade MCu 2.0 +Solids specific gravit( H 2.40 +

Densit( M Solids 30 2-3 +

lotation ti"e: "inutes ?1M air holdup volu"e@ 22 +

Cell sie "3 128. C

Rougher concentrate

rade M Cu 13.0 +Section recover(:Cu tM 51.4 +Solids specificgravit( H 3.13 +Densit( at frothlip M Solids 2*.0 2-30 Densit( at launder




23132-DB-1Rev


discharge M Solids 2.0

11..3 Regrind

eed rateRougher concentrate tHh 353 45 Sand concentrate tHh #* *4 Cleaner-scavengerconcentrate tHh 25 345 !otal tHh *54 10#*

?$oer 'ased on grinding rougher plus sand flotation concentrate@

Bond or, inde> ,9hHt 12

eed sie: 40M passing "icrons 10 +

$roduct sie: 40M passing "icrons 38 +

Specific poer consu"ption:regrind feed ,9hHt 10.#

Ball "ill poer: total ,9h * 433

fficienc( factor for toer "illsM 80 D

!oer "ill poer: total ,9h # 843

Regrind "ill design!(pe !oer "ill +

Fu"'er of "ills +Connected poer:each ,9 530 Deed densit(: M solids *0 - * )a,eup 'all sie "" 34 B

Regrind c(clone circulating load: M 10 ?underfloH overflo ratio@

C(clones CFu"'er of clusters 2Fu"'er of c(clones per cluster 2#C(clone dia"eter "" 340C(clone feedpressure ,$a 100

C(clone feed pu"ps




23132-DB-1Rev


Fu"'er total plant: operatingHstand'( 2H1 CDrive aria'le Speed C

Regrind "ill feed pu"pFu"'er per "ill: operating Hstand'( 1H0 CDrive i>ed Speed

11..# irst Cleaner lotation

irst cleaner flotation feedeed rate tHh 42 1 288 rade MCu 13.5 Solids specific gravit( H 3.1* Densit( M Solids 14.0 1*-20 +


Cell sie "3 128. C

irst cleaner concentrate

rade M Cu 3#.# +Section recover(: Cu tM 88.2 +

Solids specific gravit( H #.0# +Densit( at froth lipM Solids 28.8 2-30 Densit( at launder discharge M Solids 2.0

11.. Second Cleaner lotation

Second cleaner flotation feedeed rate tHh 2** 354 rade MCu 3#.# Solids specific gravit( H #.0# Densit( M Solids 18. 13-18 +


Cell sie : colu"n ?9 > / > 7@ " 2>4>11 C

Second cleaner concentrate

rade: M Cu #*.0 +Section recover(: Cu tM *.0 +Solids specific gravit( H #.40 +Densit( at froth lipM Solids 2.0 20-2 Densit( at launder discharge M Solids 2.0




23132-DB-1Rev


11..* Cleaner Scavenger lotation

Cleaner Scavenger flotation feedeed rate tHh 4* 485 eed grade MCu #.*0 Solids specific gravit( H 2.48 Densit( M Solids 1. 13-18 +


Cell sie "3 128. C

Cleaner scavenger concentrate

rade M Cu 10.0 +Section recover(: Cu tM 5*.1 +

Solids specific gravit( H 3.03 +Densit( at froth lipM Solids 21.0 14-22 Densit( at launder discharge M Solids 20.0

11..8 !ailings Retreat"ent

C(clones CFu"'er of clusters 2Fu"'er of c(clones per cluster 12C(clone dia"eter "" **0C(clone feed pressure,$a 100

C(clone feed pu"psFu"'er: operatingHstand'( 2H0 CDrive aria'le Speed C

Sand flotation feedeed rate tHh 8*0 5#5 rade MCu 0.30 Solids specific gravit( H 2.8*

eed densit( M Solids #.0 #0-0 +


Cell sie "3 128. C

Cleaner scavenger concentrate




23132-DB-1Rev


rade: M Cu 2. +Section recover(: Cu tM 0.0 +

Solids specific gravit( H 2.41 +Densit( at froth lipM Solids 2*.0 2#-2* Densit( at launder discharge M Solids 2.0

%%:0 Rea*en) Han'lin* an' Dis)ri@u)ion

11.*.1 /i"e

Consu"ption ,gHt ore 2 2 +

tHd 120 10

Deliver( $neu"atic 2-t truc, C

Storage d 8 +

Sla,ing Rate: dr( tHd 120 10Rate: dr( tHh 12 1Scheduled hHd 12ffective hHd 10

+vaila'ilit( M 43

)il, of li"eDensit( M Solids 10 10 - 1

Storage h 2# +

11.*.2 )eth(l Iso'ut(l Car'inol ?)IBC@

Consu"ptionrougher float gHt ore 12 +sand float gHt ore 18 +average: gHt ore 25 38 +

,gHd 1 8#0 2 88

Deliver( 15-"3 self-unloading road tan,er B

Storage d 30 +

Distri'ution Strengthsolution: M 100 B

11.*.3 Dofroth 20

Consu"ption gHt ore * 14. +




23132-DB-1Rev


,gHd 3*0 1 344

Deliver( 15-"3 self-unloading road tan,er B

Storage d 30 +

Distri'ution Strength solutionM 100 B

11.*.# S 323 ?eth(l-isoprop(l thiocar'a"ate@

Consu"ption gHt ore 1 1 +

,gHd 500 1 12

Deliver( !an, !ruc, B

Storage d 30 +


11.*. S-113 ?isoprop(l >anthate@

Consu"ption gHt ore *0 *0 +

,gHd 3 *00 # 00

Deliver( Returna'le Bags ?1 t@ BStorageBul, d 30 +)i>ed d 2 B


11.*.* S-11# ?iso'ut(l >anthate@Consu"ption gHt ore 1# 1# +

,gHd 4#0 1 00

Deliver( Returna'le Bags ?1 t@ B

StorageBul, d 30 +)i>ed d 2 B

Distri'ution Strengthsolution M 10 B

11.*.8 locculant - !ailings !hic,ener




23132-DB-1Rev


!(pe +nionic pol(acr(la"ide D

Consu"ption gHt ore #0 #0 +

,gHd 2 #00 3 000

Deliver( !ruc, B

Storage: 'ul, d 30 +

$reparation Strength solutionM 0.3 B

Distri'ution Strength solution:M 0.0 B

inal dilution at thic,ener feed ell vHv 101 B

%%:5 ailin*s Disposal an' ,a)er Re+laim

11.8.1 !ailings !hic,ener

eed rate: ?2# h continuous 'asis@!otal tailings: dr( tHd *# 000 40 000

ine tailings: dr( tHd #4 *00 *0 400

Installed

Fu"'er # Dia"eter " #3 perating # 3 6nit area ?fine tailings@"2HtHd 0.12 0.08 6nit area ?total tailings@"2HtHd 0.05 0.0

6nderflo densit( M Solids 0 #- D

11.8.2 !ailings /aunder ?ravit( lo@

Densit( M Solids 0 #-

Slurr( rheolog( )odeled as Bingha" $lastic +

11.8.3 $u"ped Coarse !ailings

$roduct Sie Distri'ution:

M passing 8# "icrons 14-20

C(clones C




23132-DB-1Rev


Fu"'er of clusters 1Fu"'er of c(clones

per cluster 12C(clone dia"eter "" 340C(clone feedpressure ,$a 100

C(clone feed pu"psFu"'er: operatingHstand'( 1H1 CDrive aria'le Speed C

Densit(?c(clone underflo@M Solids * -*

Coarse tailings pu"p D!(pe $lunger or piston diaphrag"Fu"'er: operating Hstand'( 2H1Drive aria'le Speed

Slurr( rheolog( Coarse "aterial ithout fines +Bingha" $lastic at high M solids

11.8.# !ailings Disposal

Da" construction "ethod C(cloned tailings for da" and Cfine tailings deposition upstrea"of i"pound"ent area.

11.8. 9ater Balance

InfloCoarse tailings "3Hh 3# #31 ine tailings "3Hh 2 028 2 33 Runoff?annual average@ "3Hh #1 #1 !otal "3Hh 2 #13 3 00

/osses

Contained in voidsof settled solids "3Hh 433 1 0#1 vaporation "3Hh *10 8*2 Saturation of e>istingground "3Hh *1 8* Infiltration fro" da" "3Hh 1## 140 Infiltration fro" 'asin "3Hh 2#0 300 !otal "3Hh 1 444 2 35




23132-DB-1Rev


Reclai"edSeepage collection

pond "3

Hh 114 1#8 !ailings pond 'arges "3Hh #08 #55 !otal "3Hh 2 *#*

%3:- CO"CE"RAE HA"DLI"! A"D PIPELI"E

%3:% Con+en)ra)e hi+eners

eed rate: ?2# h continuous 'asis@ tHd 2 **# 3 55*

InstalledFu"'er 2

Dia"eter " #3 perating 2 1 6nit area "2HtHd 1.05 0.3*

6nderflo densit( M Solids * *0-* D

%3:3 Con+en)ra)e Slurr4 S)ora*e

eed rate?2# h continuous 'asis@ "3Hd 2 54# 1 550 - 2 330

Densit( M Solids * *0-* D

Design capacit(:?8M availa'le volu"e@ h #4 +

%3:9 Con+en)ra)e Pumpin*

$u"p t(pe $lunger or piston diaphrag" D

%3:< Con+en)ra)e Pipeline an' Choe S)a)ions

Solids specific gravit( H #.4 +

Solids sie: "icrons

40M passing tM 28 - #4 +50M passing tM 8# +100 M passing tM 10 D

Solution anal(sis gH/ !B+ +

Slurr( rheolog( )odeled as Bingha" $lastic D




23132-DB-1Rev


Critical deposition velocit(: "Hs 1.-1.*

Slurr( operating conditionsDensit( MSolids .4 *#.4 Solids tHh 111 1#4 Slurr( "3Hh 111 111

)a>i"u" operating conditionDensit( MSolids * Solids tHh 1#4 Slurr( "3Hh 111

$ipeline dia"eter .D. "" 184 D

$ipeline t(pe 7D$-lined car'on steel D

?6nited or )iller s(ste"@

Fu"'er of pipelines 1 +

%9:- POR #ACILIIES

%9:% Con+en)ra)e hi+eners

eed rate: ?2# h continuous 'asis@ tHd 2 ** 3 0

InstalledFu"'er 1 Dia"eter " #3 6nit area "2HtHd 0.# 0.#0

6nderflo densit( M Solids * *0-* D

%9:3 Con+en)ra)e Slurr4 S)ora*e




23132-DB-1Rev


eed rate?2# h continuous 'asis@ "3Hd 2 *0 1 550 - 2 330

Densit( M Solids * *0-* D

Design capacit(:?8M availa'le volu"e@ h 2# +

%9:9 Con+en)ra)e Dea)erin*

eed rate: dr( ?total plant@ tHd 2 354 3 158

Ca,e "oisture tM 5 4. - 5 +

ilters

!(pe$late and fra"e pressure filter CFu"'er installed 3 CFu"'er operating 2 2 2 or 3

+vaila'ilit( M 8 Capacit(: each filter: dr( tHh 80

+ir de"and: averageHfilter n"3Ht 11 +ir de"and: pea,Hfilter n"3H"in 82 Cloth life c(cles 000

%9:< Con+en)ra)e #il)ra)e rea)men) an' Disposal

Disposal "ethod vaporation ponds +

$ota'le ater treat"ent Reverse os"osis +

%9:; Con+en)ra)e S)ora*e an' Re+laim

/ive capacit( t 8 000 +

eed rate tHd 2 354 3 158

+ngle of repose degree #0

Bul, densit( ,gH"3 2 *#0 2 440

Reclai"er t(pe $ortal scraper reclai"er

Reclai" rate: et tHh 1 20 1 30 C

%9:0 ,har1

Concentrate carrier sie d"t 10 000 - *0 000 B




23132-DB-1Rev


%9:5 Shiploa'er

!(pe !B+

Shiploading rate: et tHh 1 20 1 30 C

%<:- UILIIES

%<:% Poer Line

$oer ill 'e supplied fro" the northern grid of Siste"a Interconectado del Forande ?SIF@ via a ne poer line to a ne su'station to 'e erected at the proceplant area.

%<:3 Poer Dis)ri@u)ion

oltage level at line , 220 +

$ea, load for line )9 120 +

6lti"ate load for line )9 10 +

$lant distri'ution voltage , 23 +




23132-DB-1Rev


%<:9 ,a)er Suppl4 an' Dis)ri@u)ion

1#.3.1 9ater Source +

+ll fresh ater ill 'e supplied '( pipeline fro" ne ells at the SaCoposa. $u"ps ill 'e installed in C)DIC-provided ells. + collection taand 'ooster pu"p station ill also 'e 'uilt at the Southern end of the field.

+t the port: ater is reclai"ed fro" concentrate filtrate '( reverse os"oand used as pota'le ater.

1#.3.2 resh 9ater +nal(sis

!he folloing data are considered t(pical

+nal(sis +p7 8.#Conductivit( "ho 1 0027C3 pp" 1*8S# pp" 22*F3 pp" .1Cl pp" 125Fa pp" 48P pp" 10Ca pp" 82

)g pp" 3*Si2 pp" 81Cu pp" 0.02

+s pp" 0.08)n pp" 0.13e ?total@ pp" 0.21

+vaila'le flo "3Hh 3 *00

1#.3.3 Reclai" 9ater S(ste"

!he reclai" ater s(ste" includes all thic,ener overflos and reclai" a

fro" the tailings 'asin. It is distri'uted to the grinding circuit: rougflotation and tailings retreat"ent sand flotation.

1#.3.# Cooling 9ater S(ste"




23132-DB-1Rev


Cooling ater ill 'e supplied to process unit operations fro" a closed lodedicated cooling ater s(ste". resh ater ill 'e used to re"ove h

fro" the s(ste" using plate and fra"e heat e>changers. !he fresh adischarge ill 'e utilied as "a,eup ater to the process plant.

1#.3. Seal 9ater S(ste" ?$rocess $u"ps@

resh ater ill 'e used for seal ater on all process pu"ps.

1#.3.* ire $rotection +

resh ater is supplied to fire protection s(ste"s fro" the fresh astorage reservoirs: hich have a designated reserve for the fire protectis(ste". Supple"ental storage s(ste"s ill 'e installed as reuired: e

tan, at truc, repair shop.

1#.3.8 $ota'le 9ater S(ste"s

resh ater is treated to produce pota'le ater for the plant site aper"anent ca"p. or the plant site: ater is ta,en fro" the fresh areservoirs and for the per"anent ca"p it is pu"ped fro" a dedicated elthe Coposa 'asin.Consu"ption /HdHperson 100 C

1#.3.4 9ater Storage

resh ater reservoirsFu"'er 2 CStorage volu"eper each "3 30 000 !otal storage "3 *0 000 +

ire ater reserve in fresh ater reservoirsolu"e each reservoir "3 1 #00 !otal volu"e "3 2 400 B

$ota'le ater tan, "3 1 00

Reclai" ater reservoir Fu"'er 1 CStorage volu"eper each "3 30 000 C!otal storage "3 30 000 CFu"'er of co"part"entsper reservoir 2 C

%<:< Mis+ellaneous S4s)ems




23132-DB-1Rev


1#.#.1 +ir Suppl( C

$lant air ill 'e provided fro" co"pressors at 800 ,$ag. Instru"ent ualair: de point -#0WC: ill 'e provided fro" plant air using dr(ers a

filters.

1#.#.2 Stea"

Stea" is not reuired for sulphide concentrator.

1#.#.3 uel +

Diesel oil ?Fo. 2@ ill 'e delivered to the facilit( '( a 15-" 3 self-unload

road tan,er. uel vendor supplied storage on site is to 'e sufficient for oto to ee,s. + diesel da( tan, ill provided.

Documents

Process Design Criteria for Sulphide Concentrator & Infrastructure (Phaso 0)