TAILINGS SYSTEMS CODELCO CHILE INNOVATION, …modulo_II).pdfEXPOMIN I TAILING SYSTEMS I COPYRIGHT © 2018 CODELCO CHILE I TODOS LOS DERECHOS RESERVADOS 18. Title: Presentación de

1EXPOMIN I TAILING SYSTEMS I COPYRIGHT © 2018 CODELCO CHILE I TODOS LOS DERECHOS RESERVADOS E X P O M I N A P R I L 2 0 1 8

TAILINGS SYSTEMSCODELCO CHILE

René Orellana Flores,

INNOVATION, PROJECTS & GOVERNANCE

Water & Tailings Corporate Manager

2EXPOMIN I TAILING SYSTEMS I COPYRIGHT © 2018 CODELCO CHILE I TODOS LOS DERECHOS RESERVADOS

CODELCO VALUE STATEMENT


CODELCO TECH + ENGAGEMENT

Subsidiary merger

Solutions

Challenges

To add value!!!


TAILINGS CHALLENGES

Regulations

ICMM

Mining Council

Programa Tranque

Best Practices

E X T E R N A L

PMS

Tailings Policy

Internal Standards

Operation Guidelines

I N T E R N A L

Higher tonnage treatment

More storage capacity

Reduce footprint

Increase water recovery

Sustain physical & chemical

stability

Improve relationship with

community

Aplication of Best Practices

NEW WAY OF MANAGING TAILINGS SYSTEMSNEW TAILINGS GOVERNANCE


CODELCO TAILINGS DEPOSITS

DIVISION NAME STATUS

CHUQUICAMATA TALABRE ACTIVE

SALVADORPAMPA AUSTRAL ACTIVE

POTRERILLOS ACTIVE

ANDINA

OVEJERÍA ACTIVE

LOS LEONES SEMI-ACTIVE

PIUQUENES INACTIVE

EL TENIENTE

CARÉN ACTIVE

BARAHONA 1 & 2 SEMI-ACTIVE

COLIHUES SEMI-ACTIVE

CAUQUENES SEMI-ACTIVE


1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

65

60

55

50

45

40

35

30

25

20

1,20

1,10

1,00

0,90

0,80

0,70

0,60

0,50

0,40

EXAMPLE FROM THE PAST

Chuquicamata make up evolution

Concentrator processing, fresh water, & make up evolutionChuquicamata (1988-2016)

Ministro Hales make up evolution

Mak

e U

p

Co

nce

ntr

ato

r P

roce

ssin

g /F

resh

Wat

er

Make up concentrator Ministro Hales (m3/Ts) 2015-2018 monthly average

PRECO´s in Chuquicamata and Salvador Divisions

Minera Valle Central in El Teniente Division

Minera Valle Aconcagua in Andina Division

Recovery of Values

Concentrator processing Mton/year Fresh water Make up m3/Ton

Ene-15

Feb-15

Mar-15

Abr-15

May-15

Jun-15

Jul-15

Ago-15

Sep-15

Oct-15

Nov-15

Dic-15

Ene-16

Feb-16

Mar-16

Abr-16

May-15

Jun-16

Jul-16

Ago-16

Sep-16

Oct-16

Nov-16

Dic-16

Ene-17

Feb-17

Mar-17

Abr-17

May-17

Jun-17

Jul-17

Ago-17

Sep-17

Oct-17

Nov-17

Dic-17

Ene-18

Feb-18

Mar-18

0,69

0,64

0,59

0,54

0,49

0,44


TAILINGS & WATER CURRENT PROJECTS : WATER TREATMENT AND RECOVERY OF VALUES

RECOVERY OF VALUES

Recover value components from tailingsproduced by copper mining companies, bydeveloping and/or adapting technologiestechnically and economically viable, andensuring waste disposal is chemically andphysically stable.

TAILINGS WATER TREATMENT

Zero liquid discharge: by capturing and treatinginfiltrations, under existing conditions andpost-closure, including interaction withsurface water.

Treatment and neutralisation of tailings beforedisposal and potential industrial use of tailings.


PHASE I PHASE II PHASE III

ONLINE RHEOMETER - DMH (CSIRO)

DATA ANALYSIS

CHARACTERISATION & PILOT

ON-SITE TESTING

Analyse the behaviour of DMH tailings thickeners

Assess if it is feasible to install an iOR in one of MinistroHales Division tailings thickeners

Analyse thickener design and its key components

Analyse plant data to study if iOR is applicable to DMH

Field visit to gather pending information and talk to key DMH personnel

Goal: online rheology to control thickeners not only based on Cp but also rheology.

PHASE I GOAL PHASE 1 SCOPE


TALABRE - THICKENED TAILINGS PROJECT

MAIN EMBANKMENT

WESTERN RAMP AND PLATFORM

THICKEND TAILINGS PUMP STATION

EASTERN RAMP AND PLATFORM


NORTH DISTRICT FILTERED TAILINGS PROJECT

END POSITIONBELTS (ESTIMATED)

FILTER PLANT (ESTIMATED)

WATER RECYCLING LINE (ESTIMATED)

TAILINGS LINES (ESTIMATED) EB TAILINGS DMH

(IN PLACE)

POWER LINE (ESTIMATED)

DMH DRIVE(IN PLACE)


MINISTRO HALES FILTERED TAILINGS MAKE UP

Ene-15

Feb-15

Mar-15

Abr-15

May-15

Jun-15

Jul-15

Ago-15

Sep-15

Oct-15

Nov-15

Dic-15

Ene-16

Feb-16

Mar-16

Abr-16

May-15

Jun-16

Jul-16

Ago-16

Sep-16

Oct-16

Nov-16

Dic-16

Ene-17

Feb-17

Mar-17

Abr-17

May-17

Jun-17

Jul-17

Ago-17

Sep-17

Oct-17

Nov-17

Dic-17

Ene-18

Feb-18

Mar-18

0,69

0,64

0,59

0,54

0,49

0,44

MINISTRO HALES CONCENTRATOR MAKE UP (M3/T) 2015 - 2018 MONTHLY AVERAGE

2025

0.15

A studied alternative for future south – centre tailings deposits


OTHER KEY PROJECTS

• VII Phase – Carén Embankments – El Teniente

• VIII Phase - Carén Embankment Prefeasibility

• VIII Phase – Talabre Embankments – Chuquicamata

• IX Phase - Talabre Embankment Prefeasibility – Chuquicamata

• Pampa Austral Tailings Deposit Works (PRI) – Salvador

• New Filtered Tailings Deposit at Protrerillos - Salvador

• Infiltration Capture Systems for Tailings Deposits (all).

• Works at Ovejería to operate over 640 embankment level – Andina.

• Closure Plans


NEW TAILING GOVERNANCE PROJECT


OVERVIEW

Basic cause: organisational.

“The shortcoming is

not in the state of

knowledge, but rather

in the efficacy with

which that knowledge

is applied. Therefore,

efforts moving

forward should

focus on improved

implementation

and verification of

controls, rather than

restatement of them.”Catastrophic Failures:

ICMM Review:

Codelco created

the Corporate

Water and Tailings

Managing Area

Solve Challenges, Improveour Tailings SystemManagement and Improve Project Management.

Global Catastrophic Failures of Tailings Deposits 2014, 2015 , 2016 and 2017.

Samarco – Mount Polley: environmental, economic, image, civil and criminal

consequences.


INTERNATIONAL BEST PRACTICES

Tailings Governance Framework (ICMM): focuses on preventing catastrophic failures

• Accountability, Responsibility &Competency

• Planning and Resourcing

• Risk Management

• Change Management

• Emergency Preparedness & Response

• Review & Assurance

• Tailings Sustainable Management Guidelines

• Standardization

• Review Board

• Engineer of Record

• Document Management System


GOVERNANCE

Corporate Water & Tailing

Management


2018 - 2020 ACTION PLAN

Consolidate Governance:

• Corporate Tailings Committee• Workshops by Division• Review Board • Engineer of Record• Document Management System• Sponsor Role

Training, Career Development

Update Corporate Guidelines

Inactive Deposits: include in controls

Standardization

• Benchmark / Best Practices• Business & Development Plan

Alignment Review• Operation Synergies – transversal

contracts• C+• Develop Operator Capability

Strategy Statement

• ICMM• Filtered Tailings (Distrito Norte)• Infiltrations: analysis +

infrastructure.• Emergency Manual (Dangerous

Distance - Community)• Dams included (Minería Alta Ley)• Closure Plans • Climate Change

Competency+ Experience+

Resources+ Empowerment

CAPABILITY+


T H A N K Y O U

Documents

TAILINGS SYSTEMS CODELCO CHILE INNOVATION, …modulo_II).pdfEXPOMIN I TAILING SYSTEMS I COPYRIGHT © 2018 CODELCO CHILE I TODOS LOS DERECHOS RESERVADOS 18. Title: Presentación de