17 4.Grinding system Ball mill is the earliest grinding equipment used in cement production industry, and it still plays a leading role. Although its efficiency is very low, for example, the power consumption of single particle is only 6% - 9%, the maintenance of ball mill is simple and reliable, especially for cement clinker grinding. Cement Grinding Mill In Siwan. Cement Mill,Cement Clinker Grinding Plant - Hot Crusher Cement Mill Overview. A cement mill is the equipment that used to grind the hard, nodular clinker from the cement kiln into the fine grey powder that is cement.