Page 1 ball milling theory freeshell org,the optimum speed varies as a percentage of the critical speed depending on the viscosity of the material being ground. for the dry powders used in pyrotechnics, the optimum speed will be 65% of the critical speed. using the interactive calculator on this page will help you determine the optimal speed for your mill without having to reach
Learn MoreHigh quality products
100% Factory price
Customized solution
Full after-sales Service