Abstract
Rice husks with several water contents were milled and sieved for a numerical evaluation of their particle distributions. The distribution for longer milling period shifted to smaller particle size, however changes in the parameter of the approximation to the Rosin-Rammler distribution had no dependence on the period. This was resulted from particular micro structures of the powder under 100 μm were uncrushed and it seemed that an accumulation of the structures affected to the distribution curbs. A new numerical method, which was total of the products of mesh size and weight percentages of the sieved powders in the mesh was applied and evaluated the distribution. Asa result, the changes in distributions for milling periods can be estimated by the numerical values. It was also evaluated that the particle distributions from lower water content material shifted to smaller particle size, if the milling time was constant.
