Aug 01, 1987· Ball mill control -Automatic start-up control In most cement plants, start up of a mill is conducted through a series of manual operations on the part of an operator The operator switches on the mill, starts the mill feed and , after ascertaining that the mill load becomes stable , changes the control mode to the constant-value feedback ,

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Get PriceJul 31, 2014· Due to limitation of the mill’s rotational speed, the smallest ball size is usually restricted to about 15 mm Cement grinding using stirred mills (Pilevneli and Azizli, 1999) indicates that using smaller media (5-8 mm range) improves grinding energy efficiency up to 50% using stirred mills For specialized types of cement, which are finer ,

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