Jk. Park et al., GRINDING TIME FOR CONTROL OF THE SIZE FRACTION OF PRODUCTS IN THE ATTRITION MILLING, The Korean journal of chemical engineering, 15(4), 1998, pp. 375-380
Grinding tests for garnet were carried out by using an attrition mill
under wet processes. Effects of feed filling ratios and a chemical age
nt (sodium hexametaphosphate, SHP) were investigated on the grinding t
ime of the garnet. The progeny particles obtained were screened into v
arious particle size intervals, which were 100 mesh over, 100/400 mesh
and 400 mesh under. In order to estimate the mass fraction of the par
ticles in a given particle size interval, mathematical models were der
ived from the first-order reaction model, then compared to experimenta
l data. It was observed that variation of the feed filling ratio did n
ot show a significant effect on the mass fraction of the product. The
chemical agent was, however, effective so that the mass fraction could
be controlled by adjusting the content of SHP.