Solved 6000 lb of a material goes through a crusher and
WEBcrusher shows a surface area of product of 500 ft2 per lb. Screen analysis of the grinder product indies a surface area of 4,200 ft2 per lb. The Rittingers number of the material processed is 163 in2 per ftlb. The efficiency of the crusher is estimated to be 25%, while that of the grinder is 30%.