CHAPTER 20: SIZE REDUCTION – EQUIPMENT FOR SIZE …
Dp – 80% of the product passes through mesh of dia Dp, mm . Df – 80% of feed passes through mesh of dia, Df, mm . Wi – Work index . Gross energy requirement in kilowatt-hour per tonne of feed needed to reduce a very large feed to such a size that 80% of the product passes through a 100 micro meter screen
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