Question

mpus, TDS, ISS. 031 Size reduction 1-What are the difference between jaw crusher and ball mill? 2-give three examples for application of crushing processes 3-what is the meaning of undersize percentage 4-what are parameters that effected on the efficiency of crushing processes 5-discuss the effect of ball diameter and number of ball on properties of grinding processes

Answer 1

Ans 1 :

Jaw crushers are the machines that are used to crush the large rocks into smaller pieces such as gravel , rock dust , smaller rocks etc , whereas the ball mills are used to blend the materials even more finer upto the particle size of 20 to 75 microns.

In the crusher , the crushing is accompalished between the two crushing jaws , whereas in the ball mill the grinding is done using rotating cylinders that has grinding balls made up of steel.