Webinar: How to use the acoustic emissions from a grinding mill for diagnostics and control

Grinding mills create significant acoustic emissions, which can be understood in terms of the mechanisms of their internal operation. These mechanisms are influenced by both the feed ore characteristics and the operational practice of the grinding circuit, including feed preparation and its mills. Various studies of grinding circuits, using permanent installations of an acoustic array as well as acoustic surveys, have been executed on over 70 mills over the last 25+ years. This work has resulted in a tool that allows the understanding for the rapid diagnosis of grinding operations, as well as providing useful outputs for the control of mills. Examples include the easy real-time detection of packing of media and ore between lifters; evaluation of changes in feed ore characteristics, including ore hardness; exceptional impacting of media against liners at several circumferential locations; an assessment of the water/slurry holdup inside the mill; the determination of optimal load, including overloading and underloading; and the evaluation of the appropriateness, or otherwise, of mill operation and its circuit. This webinar will discuss the acoustic emissions - derived measurement methodology and how they are applied to the determination of rapid and timely production information, resulting in financial savings through reduced production costs and reduced downtime for the grinding circuit.

 

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