This paper presents the results of characterization alumina ball size distribution in mill a crushing and grinding plant. The was unloaded balls were sieved. Then, adjusted to three kinds models; two them are traditional models Rosin-Rammler Gates-Gaudin-Schumann. third model applied Swebrec function, which has been successfully used on fragmented rock distribution. best adjustment for obtained...

Grading of crushed sand is different from that natural sand. In this report, in order to simplify the expression method grading sand, modified Rosin-Rammler’s equation was studied instead Mimura’s one with five experimental constants. It found can be expressed using two constants and introduction fineness modulus considered. Based on existing data provided study, it suggested stipulations JIS A...