OPTIMIZATION OF MILLING PARAMETERS OF PLANETARY BALL MILL
grinding jar and WC balls were selected for performing milling operation. Rice husk ash (RHA) prepared in the laboratory by using muffle furnace was taken for milling. Very important grinding parameters such as milling speed, time of milling and ball to powder ratio were selected as factors and in each three levels were taken to design the experimentation. Different mill speeds 250, 375 and