7 Presentacion Ben Steyn
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Transcript of 7 Presentacion Ben Steyn
EXPERT MINERALS PROCESSING SOFTWARE AND CONSULTING
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
4
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
5
6
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
7
Razones del problema
8
“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
9
10
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
12
August 2011
Specific benefits of one change
Beneficios especificos
14
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
Tenemos una nueva oficina en Santiago.Nos encantaría ayudarlo.