Grinding Technology Extends Horizons

With miners worldwide facing lower-grade feeds, fine-tuning energy-hungry grinding circuits is becoming increasingly important

By Simon Walker, European Editor

Optimization of grinding circuits is one of the key aspects of running a concentrator successfully. If a mill is not doing its job properly, it handicaps subsequent mineral recovery systems. Overgrinding adds to the slimes burden in the plant and wastes energy; insufficient particle liberation means that the middlings fraction can be too high, and circulating loads increase. To find out how the world’s leading processing system suppliers view the challenges, and what they can offer to ameliorate them, E&MJ sought the advice of grinding-technology experts from FLSmidth and Metso, as well as dipping into the proceedings from some recent grinding-focused conferences.
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