EXPERT MINERALS PROCESSING SOFTWARE AND CONSULTING

info@minerality.com.auwww.minerality.com.au

Solutions to Manage Ore Variability Effects

1. Live Ore Hardness Monitoring

2. Continuous Performance Predictions

3. Continuous Advice

3 Important things to make our jobs easier

3Este estudio de caso puede ayudarlo de muchas maneras

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Objectives

1.Higher throughput from 120 tph to 150 tph

2.Higher energy efficiency

3.Higher recovery of valuablesPrimary Product size 80%-45um,17%Copper grade, 60% Copper recovery

And an extra goal – lower stress on

equipment

Objetivos

Problems

1. Ore hardness varies significantly

SAG load fluctuates-not good for liners

2.Recirculating loads fluctuate

3. Final product size fluctuates

Problemas

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Reasons for problem

Ore test results are required for simulation

1.Long time before receiving results

2.Test not representative of ore body

3.Test not valid over all size rangesRazones del problema

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Razones del problema

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“SOFT” big rock breaks

The broken pieces become “HARD” to break

Solutions

1.Measure ore hardness live-Immediate result-Maximum representivity-Valid for the ore inside the mill at that time

Soluciones

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June 2011

Specific benefits

1.Understand the full plant and make informed

choices

2.Immediate advice to

-Minimize SAG load fluctuations-Maintain recirculating loads around 250 %-Maintain correct product size

3. Continuous LIVE measurement-Continuous LIVE simulation-

Continuous LIVE advice-

Continuous LIVE savings

Beneficios especificos

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August 2011

Specific benefits of one change

Beneficios especificos

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June 2011 August 2011

SAG Index 55 55

Throughput [tph] 110 130

Total Power [kW] 2100 2270

P80 [micron] 55 50

Grade Cu [%] 17 17

Recovery [%] 52 56

4% higher recovery of 17% Cu at 20 tph higher total throughput at $7630/ton but 170 kW extra

=$1033/hr more Copper

www.minerality.com.au / PO BOX 1711, New Farm QLD 4005, Australia | +61 7 3358 2288 / Suecia 15, Of.75, Providencia, Santiago, Chile | +56 9 9698 6084

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