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Conference Proceedings

Fourth Mill Operators' Conference, Burnie Tas, March 1991

Conference Proceedings

Fourth Mill Operators' Conference, Burnie Tas, March 1991

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A Review of Tower Milling at Hellyer

Tower Mills are used at Aberfoyle's newly commissioned Hellyer base metal sulphide concentrator. Hellyer ore is particularly fine grained. To achieve adequate liberation fine grinding is necessary. Three Tower Mills are used on regrind duties, grinding to less than 20 microns. The physical arrangement, material flows and grinding characteristics for the Hellyer Tower Mills are described. The mills have performed satisfactorily, both in size reduction and power efficiency. Wear parts must be inspected and changed more often than with ball Mills. To date, 92 per cent availability has been achieved. As parts and maintenance routines are rationalised, this is expected to improve to 96 per cent._x000D_
Modifications to wear parts for the Hellyer Tower Mills are discussed.lhc Tower Mill grinding environment is highly reducing. The impact of Tower Mill regrind on downstream flotation is discussed.
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  • Published: 1991
  • PDF Size: 0.58 Mb.
  • Unique ID: P199101003

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