Mineral Processing
· Normal RR - 3-7 ( for coarse crushing ), - as high as 100 ( for fine grinding). Energy requirement increases with RR. 18. 20 3. Free crushing. Individual particles are crushed freely. The crushed product is removed from the crushing zone quickly. It avoids formation of excessive amounts of 'fines' ( the number of contacts are less, hence less crushing). 4. Choke feeding. …