Redesigning SAG Mill Recycle Crusher Operation
Other conference contribution, 2019

Recycle crushing is used extensively to boost SAG mill throughput, by rapidly reducing the competent pebbles that would otherwise build up in a SAG mill. Although applied with considerable success, it is the Authors observation that the crushers are generally poorly utilised: operating well below installed power; switching on and off; and set at large closed side settings. Application of good design and control practice has the potential to increase crusher efficiency in terms of reduction ratio and thus in turn increase SAG mill throughput and unload overloaded Ball mills to open up circuit capacity. Examples of operating practice and potential are provided to illustrate this.

SAG mill control

cone crusher operation

Pebble recycle crushing


Malcolm Powell

University of Queensland

Magnus Evertsson

Chalmers, Industrial and Materials Science, Product Development

Aubrey Mainza

University of Cape Town

SAG Conference 2019
Vancouver, Canada,

Subject Categories

Other Mechanical Engineering

Other Chemical Engineering

Control Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

Driving Forces

Sustainable development

Areas of Advance


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