Solved 11. 2 tonnes of galena is to be reduced to fine
Screen analysis of feed, product from the crusher, and product from the grinder indicated surface areas of 3, 114, and 900 m²/kg respectively. If the power required by the drive to run the crusher-grinder assembly is 18 kW and efficiency of the crusher is 25 %, find the efficiency of the grinder. Rittinger s number of galena =95.7 m'/kJ. 29.6 %
