Answer in Chemical Engineering for 62829 #210484
Mill product analysis indicates a surface area of 740 m2/kg. Rittinger s number for calcite is 75.9 cm2/kg.cm. Efficiency of the grinder is 30%. The crusher and grinder are driven on the same shaft (by. an electric motor) whose transmission efficiency is 90%. If 480 hp is fed at. the other end of the shaft, compute the efficiency of the crusher.
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