2018-11-15 · this product is further crushed to 5 x 10 (-4) m size in the same mill? Assume that Rittinger''slaw is applicable. •It is desired to crush 10 ton/hr of iron ore hematite. The size of the feed is such that 80% passes a 72.6 mm screen, and 80% of product a 3.175mm screen. Calculate the gross power requirement for wet grinding and dry grinding.