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.