Abstract
The comminution process is often an indispensable unit operation for mineral processing. The main purose of mineral processing is to separate the valuable minerals from the gangue ones. It necessitates mineral liberation by comminution. Most of the conventional comminution models however, represents only the size reduction phenomena excluding liberations ones. Different comminution matrices were applied for the free and the locked particles respectively. For the locked particles the liberation probability function was introduced in addition to the above matrix. This probability function was determined assuming completely random cutting off the spherical particles from the coarser primary particles. The degree of liberation caused by fracture of the locked particle can be obtained by an approximated equation involving the liberataion probability function and the content of the component concerned.
