procedures grinding powder with a ball miller in myanmar

Nov 01 2019 Grinding was performed using a XMQ240 90 laboratoryscale conical ball mill Wuhan Exploring Machinery Factory Wuhan China The diameter and length of the intermediate cylinder part of mill were 240 and 90 mm respectively The operational speed was kept at 96 rpm 68 critical speed according to the literature The mass of the 35 mm balls alloy steel balls density of