Cage Mill

Name:
Cage Mill
Detailed information:
(bar disintegrator, squirrel-cage disintegrator). A comminuting device that may consist of two rotating structures similar to water wheels, one fitting inside the other. They are provided with horizontal crossbars or breaker plates. The assembly is covered with a close-fitting housing. The two wheels or cages rotate at high speed in opposite directions on a horizontal axis. The material to be reduced is fed into the smaller cage from a hopper. It is ejected at speeds up to 12,000 ft/min and is fragmented by contact with the bars. As the pieces are thrown back and forth within the cages, they are disintegrated further by mutual impact. Some types of cage mills have only a single cage, but others have more than two. They are used for size reduction of niter cake, fertilizers, coal, and other friable materials. Particle size can be varied by adjusting the space between the crossbars.