The Coalition for Energy Efficient Comminution CEEC

The Coalition for Energy Efficient ComminutionCEEC

A not-for-profit company, supported by industry donations

Energy Efficiency In Comminution

Is this a worthwhile investment amidst times of low fuel prices?

Key strategic outcomes of CEEC roadmap

Measure performance and produce benchmarks that allow energy efficiency performance to be quantified and evaluated.

Adopt best practice in technology.

Identify and implement appropriate business drivers and KPIs.

Communicate the benefits, motivate, engage and train.

Why Comminution?

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The march of innovation

20141935

Citic Pacific AG mills, 40’, 26 MW (x 6)

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Things are getting worse….

• Efficient classification is key to efficient comminution.

What have we learned in the last 20 years?

• What are our classification options?

CLASSIFICATION EFFICIENCY

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NPV sensitivity to energy saving and energy price, Screens Vs Cyclones

The relationship between classification efficiency and circulating load

Copyright © Hatch 2016. All Rights Reserved.

STACKED SCREEN INSTALLATION

Copyright © Hatch 2016. All Rights Reserved.

• Very fine grinding is economically possible with stirred mills.

What have we learned in the last 20 years?

IsaMill Vertimill

• HPGR has a role for the right ore and in the right flowsheet

What have we learned in the last 20 years?

Boddington, WA

• Pre-concentration is a real option

What have we learned in the last 20 years?

Jig

Sorter

DMS

Screen

• Novel flowsheets can reduce energy consumption

What have we learned in the last 20 years?

• 61% reduction in energy

• 3% increase in recovery

• More crushing, less grinding

Malcolm PowellJKMRC

Longer term research targets…

• Exploit fundamental understanding of breakage.

• 3-product cyclone / Classification Options.

• Pre-concentration.

• Improved metrics (eg kWh/t metal); benchmarking.

• Step Change In Comminution Technology -SelFrag.

Size of the database

Conclusions

Energy efficiency results in greater productivity and shareholder returns

Improving energy efficiency and productivity starts with benchmarking

Look at options by following the 4 step process

Communicate the benefits, motivate, engage and train.

CEEC’s vision

To demonstrate and promote energy-efficient comminution strategies improve productivity, energy efficiency and

shareholder value