Finish grinding accounts for nearly 40% of the electricity use in cement production. . or high pressure grinding rolls (HPGR) with existing ball mills or by a complete . Energy savings enabled by replacing ball mills with VRMs can be 20 to 30% . Power consumption of this system is reported to be 4~6 kWh/t lower than that.
Jun 17, 2018 . What is the effect of low ball % full on grinding efficiency? . Balls must be added to maintain the media load and mill power draw. . 40% ball charge is quite high (unless you are looking at a small mill). ... past which clearly shows that energy saving make sense reducing 1°chamber ball mill filling degree.