ABSTRACT
The operation of applying a force on the particle to break it is called size reduction. Comminution is a general term for size reduction that may be applied without regard to the actual breakage mechanism involved. In any industrial comminution operation, the breakage of any individual particle is occurring simultaneously with that of many other particles. The breakage product of any particle is intimately mixed with those of other particles. Thus an industrial comminution operation can be analyzed only in terms of a distribution of feed particles and product particles. Laws of comminution are concerned with the relationship between energy input and the size of feed and product particles. It is a fact that most of the energy supplied to a comminution machine is absorbed by the machine itself to move various parts of the machine, and only a small fraction of the total energy is available for breaking the material.
