CRUSHING AND PULVERIZING MACHINERY. 



451 



Working on Lehigh district raw material, a kominuter has given 

 over 14,000 Ibs. per hour. On a harder mix, at a plant in the middle 

 west, a kominuter gave 13,812 Ibs. per hour. 



FIG. 98. Exterior view of kominuter. (F. L. Smidth & Co.) 



A kominuter running on a mixture of limestone and shale, of which 

 the limestone had been passed through a crusher to, say, 1 inch, and the 

 shale through a disintegrator, reduced about 18,000 Ibs. per hour. The 

 product on a number of sieve tests gave the following residues on a 

 100-mesh sieve: 



54.5%, 55.2%, 59%, 52.4%, 43%, 45%. 



