Solved 3.14. Limestone (calcium carbonate) particles are
(c) The contents of three bags are fed to a ball mill, a device something like a rotating clothes dryer containing steel balls. The tumbling action of the balls crushes the limestone particles and turns them into a powder. (See pp. 21-64 of Perry's Chemical Engineers' Handbook, 8th ed.) The limestone coming out of the mill is put back into 50-L ...
