Mining Chemicals

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Exactly your chemistry.Contact

Research & Development

Clariant GmbH

Division Functional Chemicals BU III

Mining Chemicals

D-65926 Frankfurt am Main

Tel.: ++49 (69) 305 - 50 22/ 68 51

Fax: ++49 (69) 30 32 99

Marketing

Clariant GmbH

Division Functional Chemicals BU III

Mining Chemicals

Am Unisys-Park 1

D-65840 Sulzbach am Taunus

Tel.: ++49 (6196) 757-78 49

Fax: ++49 (6196) 757-89 66

Internet

www.clariant-surfactants.com

Clariant (Brasil) S.A.

Dept. Functional Chemicals / Mining

Av. das Nacoes Unidas, 18.001

BR 04795-900 Sao Paulo, BRAZIL

Tel.: ++55 (11) 525 -76 24

Fax: ++55 (11) 525 -76 94

Clariant Colorquimica (Chile) Ltda.

Functional Chemicals Division / Mining

Camino a Melipilla 15170

Maipu

P.O. Box Casilla 9096 Correo 21 Santiago

Santiago de Chile

Tel.: ++56 (23) 73 41 50

Fax: ++56 (23) 73 41 20

Clariant (Australia) Pty. Ltd.

Functional Chemicals Division / Mining675-685 Warrigal Road

Chadstone Vic 3148

Tel.: ++61 (3) 92 54 10 92

Fax: ++61 (3) 92 54 10 11

Clariant (Southern Africa) Pty Ltd.


254 Point Road

DURBAN 4001

South Africa

Tel.: ++27 (31) 33 22 090

Fax: ++27 (31) 33 22 084

Clariant (Canada) Inc.


4600 rue Cousens

St. Laurent. Quebec, Canada

H4S 1X3

Tel.: ++1 (514) 832 25 51Fax: ++1 (514) 334 62 32

EBR

5158

E0

4.2

000

Cmm

serv,FrankfurtamMain

o

Exactly your chemistry.

Product Information

Mining ChemicalsMining ChemicalsFunctional Chemicals DivisionFunctional Chemicals Division


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P Y R I T E - C O P P E R O R E

Collectors

0706


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10%

23%

37%

56%

62%

67%

50

60

68

74

8

0

87

Flotatio

n test

with pur

e galena

and10g/

t Xantha

te,

lead rec

overy [%

]

Contac

t angle

on galena[]

methyl-xanthate

ethyl-xanthate

propyl-xanthate

butyl-xanthate

amyl

-xanthate

hexyl-x

anthate

XANTHATESProduct name

Xanthate

Chemical formula

Me+

is either Na+

or K+

Application

Xanthates are used for the flotation of

sulphide and sulphidized oxide ores

(sulphidizer: sodium sulphide Na2S or hy-

drosulphide NaHS). The activity of the

xanthates increases with increasing chain

length of the alkyl group R; the selectivity

decreases in accordance with increased

chain length. Xanthates are often used

in combination with other reagents such

as dithiophosphates or thiocarbamates,

often added to the scavenger circuit

to improve the total rec overy. They arenormally used in aqueous solutions.

Xanthates undergo hydrolysis in the

acid pH range, and are therefore preferred

for flotation in alkaline pulp streams.

The flotation results can be improved by

simultaneous use of xanthates together

with dithiophosphates (see page 10/11).

Xanthates are available as powder or in

pellet form and with an active matter

content of 90% (SIPX and SIBX with 90%

and 84% active matter).

Range of products

PEX Potassium ethyl xanthate

SEX Sodium ethy l xanthate

SIPX Sodium isopropyl xanthate

SIBX Sodium isobutyl xanthate

PAX Potassium amyl xanthate

PHX Potassium hexyl xanthate

R O C

S

S-Me+

These collectors are used almost exclu-

sively for the flotation of sulphide minerals,sulphidized oxide minerals and precious

metals. They are characterised by the

functional -SH group bonded to a carbon or

phosphorus atom. The nonpolar radicals

of these collectors are generally short

chain aliphatic hydrocarbons.

The wide range of collectors for

sulphide and metallic ores consists of high

quality xanthates and dithiophosphates.

Collectors for Sulphide and Metallic Ores

C O R R E L A T I O N O F R E C O V E R Y A N D C O N T A C T A N G L E

O F A Q U E O U S X A N T H A T E S O L U T I O N S E . G . O N P U R E G A L E N A

0908


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1716

FrothersThese reagents are surface-active chem-

icals, capable of being adsorbed on the

air-water interface. Frothers are generally

hetero-polar substances. They consist

of a nonionic polar group exhibiting a hy-

drophilic nature coupled with a nonpolar

hydrophobic alkyl group, the tendency

being to force the latter into the air phase.

Collectors for non-metallic ores, as well

as amines, usually generate sufficient

froth, which in most cases render the use

of frothers unnecessary. When using

sulphide collectors, the addition of a frother

is necessary, for yielding sufficient frothing

properties.

There are three main chemical groups

of frothers: polypropylene glycol ethers,

polypropylene glycols and alcohols.

Clariant has an extensive range of these

frothers.

POLYPROPYLENE GLYCOL

Brand

Flotanol C-7

Chemical formula

Application

Flotanol C-7 has outstanding properties for

coarse particle flotation. The polyglycol

frothers tend to form fine froths that are

quite selective. However, due to their high

activity, overdosing must be avoided as

froth persistency can be a problem. This

frother is especially useful when process-

ing streams (flotation pulps) have high

salt or electrolytic content. This is an appli-

cation where many other frother types

fail. Polypropylene glycol is ideal when

collectors such as xanthic acid esters

or mercaptans are used, as these collectors

tend to hin der froth d evelopment.

H O CH2 CH O (CH2 CH O)n H

CH3 CH3

B U B B L E S I N G A L E N A F L O T A T I O N


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2120

Depressants andDispersantsBrands

Tylose grades

Chemical formula

Carboxymethyl cellulose ethers (CMC)

Application

Carboxymethyl cellulose ethers (CMC)

have been widely used in mineral pro-

cessing as a depressant for talc or other

magnesium silicates, especially in copper/

nickel mines. Clariant has a large range

of CMC's suitable for the depression of

naturally floating minerals.

Brand

Dispersogen A

Chemical formula

Anionic condensation product

Application

Depressant for carbonates in the flotation

of oxide minerals such as phosphates.

Dispersogen A has also found some appli-

cation as a depressant for graphite or

carbonaceous shales, as well as in flotation

of sulphide minerals in salt water with

large mineral surfaces.

D E P E N D A B L E D O S A G E O F R E A G E N T S W I T H A C U P F E E D E R

CH2OCH2COONa

C

H

O

OH

C

H

C

H

OH

C C

O H

H OH

H

n


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V A C U U M D R U M F I L T E R C L A R I A N T F I L T E R A I D S H E L P T O

R E D U C E T H E M O I S T U R E R E M A I N I N G I N T H E F I L T E R C A K E

2322

Extractants and

Other SpecialtiesTERTIARY AMINES FOR SOLVENT

EXTRACTION AFTER LEACHING

The solvent extraction process is based on

amines whose salts can enter into an ion-

exchange reaction with those metals that

are present in the form of anionic comple-

xes. Examples of anionic metal complexes

are molybdates MoO42

, wolframates/

tungstenate s WO42

, vanadates VO3

and

chromates Cr2O72

.

Brands

Hostarex A 324 and Hostarex A 327

Chemical formula

R = isooctyl (A 324) or

R = n-octyl/n-decyl (A327)

Application

Hostarex A 324 can be used to separate

cobalt and nickel.

Hostarex A 327 is used extensively in

the uraniu m processin g industry. It

can also be used for the extraction of

W, Mo and Re.

SULPHO SUCCINIC ACID ESTER/

FILTER AID

Filter Aid B-70 is a strongly surface-active

agent used to reduce the moisture content

of filter cake of mineral substances. It

acts by greatly lowering the surface tension

of water, thus enabling the firmly bound

capillary water to drain away.

ANTICAKING AND ANTIDUSTING

REAGENTS FOR FERTILIZER

AND POTASSIUM SALTS

For this application, Clariant has a full range

of Flotigam and Genamin types which

are not covered in this brochure. Please

refer to our technical bulletin Fertilizer

finishing with anticaking agents for moreinformation.

RNR

R


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