Calculation of S matrices for rod and ball mill matrix models

Abstract

AbstractIt is shown for the matrix models of both rod mill and ball mill that when the feed and product vectors as well, as the classification and breakage matrices are known, the number of available equations for the determination of the selection matrix is less than the number of elements. Without further conditions this allows some of the elem.ents in the selection matrix to be arbitrary. For the rod mill the number of arbitrary elements for S1 = 1 equals the number of zeros in a product vector. For the ball mill this number is increased by one.A procedure is developed for obtaining the nonarbitrary elements and the number of stages for a rod mill and the number of cycles for the ball mill. The elements determined reproduced exactly the finite product vector components.It is found that the elements of the selection matrix are sensitive, not only to the arbitrary elements, but also to the screen size analysis.The necessary computer programs are described. Resume Par un modele a matrices pour un broyeur ...