氧化铝球在泗洲选矿厂二段磨矿中的应用

Application of Alumina Balls in the Second Stage Grinding Operations of Sizhou Concentrator

为降低泗洲选矿厂二段磨矿作业球磨介质消耗和磨矿电耗,针对传统磨矿介质钢球在磨矿过程中自身消耗和磨矿电耗高的缺点,进行了氧化铝瓷球替代钢球试验研究。通过试验室不同球径氧化铝球配比试验和生产现场磨矿介质充填率对比试验,得出35,25 mm 2种球径按质量比6∶4,磨矿介质充填率为36%时,磨矿产品中的-0.074 mm含量最高,磨矿过程最稳定。分析钢球和氧化铝球生产运用对比试验数据可知,氧化铝球可使磨机磨矿电单耗下降约30%,介质单耗下降66%,经济效益显著,具有推广价值。

In order to reduce the ball milling medium consumption and grinding power consumption in the second-stage grinding operation of Sizhou concentrator,aiming at the shortcomings of high self-consumption and high grinding power consumption of traditional grinding medium steel balls in the grinding process,the experimental study on the substitution of alumina ceramic balls for steel balls was carried out.Through the ratio test of alumina balls with different ball diameters in the laboratory and the comparison test of grinding medium filling rate in the production site,it is concluded that when the mass ratio of ball diameters of 35 mm and 25 mm are 6∶4 and the filling rate of grinding medium is 36%,the content of-0.074 mm in grinding products is the highest and the grinding process is the most stable.By analyzing the comparative test data of steel ball and alumina ball production,it can be seen that alumina ball can reduce the unit consumption of grinding power by about 30%and the unit consumption of medium by 66%.The economic benefit is remarkable and has the value of popularization.