摘要
针对永平铜矿选矿厂一段球磨磨矿效率偏低的问题,采用优化磨矿球荷特性的方法进行提高磨机处理量、-0.074mm利用系数和磨矿技术效率,降低磨矿球耗的试验研究。实验室结果表明,推荐介质制度Ф70:Ф60:Ф50:Ф30=30:20:25:25与现场介质制度Ф80:Ф70:Ф60:Ф50:Ф40:Φ30=30:20:20:19:8:3相比,过粗粒级γ+0.20mm低47.07%,磨矿细度γ-0.074mm高3.96%;将新的磨矿介质配比运用于工业试验,优化后的1^#球磨机与未优化的2^#球磨机相比,磨机处理量提高1.1t/h,磨机-0.074mm利用系数及磨矿技术效率分别提高5.29%和26.35%,钢球单耗降低6.51%,达到了提高一段球磨磨矿效率的效果。
Aiming at the low efficiency of ball grinding in the first section of the dressing plant of yougping capacity of the mill, the utilization coefficient of-0.074 mm and the technical efficiency of grinding, and reduce the ball consumption of grinding by iptimizing the characteristics of grinding ball load. Laboratory results show when the recommended medium system is Ф70: Ф60: Ф50: Ф30: = 30:20:25:25 and the on-site medium system Ф80: Ф70: Ф60: Ф50: Ф40:Ф30: = 30:20:19:8:3, over-coarse-grain grade γ+0.20 mm low 47.07 percent points, grinding fineness γ-0.074 mm high 3.96 percent points. Industrial test results show, after adopting the new grinding ball charge characteristics, compared to unoptimized 2^# mill, mill processing capacity is relatively increased 1.1 t/h,-0.074 mm utilization factor and grinding technology efficiency is increased by 5.29 percent points and 26.35 percent points respectively, and steel ball unit consumption is decreased by 6.51 percent points, achieved the effect of improving the efficiency of one stage grinding.
作者
郭运鑫
肖庆飞
黄胤淇
王旭东
Guo Yunxin;Xiao Qingfei;Huang Yinqi;Wang Xudong(Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming,Yunnan, China)
出处
《矿产综合利用》
CAS
北大核心
2019年第4期135-138,共4页
Multipurpose Utilization of Mineral Resources
基金
国家自然科学基金面上项目(51774517)
矿物加工科学与技术国家重点试验室开放研究基金专项资助(201707)
关键词
磨矿效率
球荷特性
粒度
磨矿
Grinding efficiency
Ball charge characteristics
Granularity
Grinding
