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Macam Reduction Ratio Mining

dilution and ore recovery,dilution is the waste material not separated from the ore in the stages of mining, and is sent to the processing plant. it is defined at the ratio of tonnage waste mined and sent for processing over the combined ore and waste tonnage milled. the following equation is the expression used for dilution:.dual roll crushers, how they function,roll crushers have a theoretical maximum reduction ratio of 4:1. if a 2 inch particle is fed to the roll crusher the absolute smallest size one could expect from the crusher is 1/2 inch. roll crushers will only crush material down to a minimum particle size of about 10 mesh (2 mm)..cost reduction in mining operations – discussion – mining,this could reduce the current overburden rate from $1.25 down to $0.85/bcm (30% reduction). for a mine with a nominal strip ratio of 6.0 bcm/tonne, producing 10 million tonnes coal per annum, this reflects in significant extra profit. extra profit.

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