青海某铅锌矿选厂磨矿介质优化应用研究  

Study on Optimization and Application of Ore Grinding Medium at one Lead-zinc Ore Dressing Plant of Qinghai

作　　者：罗文成 LUO Wen-cheng(Qinghai Hongxin Mining Industry Co.,Ltd.,Geermu,Qinghai 816099,China)

机构地区：[1]青海鸿鑫矿业有限公司,青海格尔木816099

出　　处：《云南冶金》2021年第5期28-32,共5页Yunnan Metallurgy

摘　　要：针对青海某铅锌矿选厂一段磨矿球磨机处理能力较低,且磨矿产品粒度组成分布不合理、磨矿能耗及磨矿介质消耗高的问题,结合矿石性质通过半理论公式计算出推荐的介质配比方案为m(φ100)∶m(φ90)∶m(φ80)∶m(φ60)∶m(φ40)=25∶25∶15∶20∶15。利用推荐介质配比方案进行工业化应用,结果表明,通过工业化应用,旋流器溢流-0.074 mm粒级产率较工业试验前提高2.92%,+0.15 mm过粗粒级较工业试验前降低0.13%,(-0.15~+0.01)mm中间粒级含量较工业试验前提高4.44%,有效改善了粒度组成均匀性;处理量比工业试验前提高5.2 t/h;磨矿单位电耗较工业试验前降低1.46%;磨矿介质消耗降低0.11 kg/t;铅、锌回收率分别提高0.03%、1.04%。The primary grinding ball mill of one lead-zinc dressing plant of Qinghai had low processing capacity,and the granularity composition and distribution of grinding minerals were unreasonable,energy and medium consumption of ore grinding was high,therefore we calculated the recommended medium proportional plan that is m(φ100)∶m(φ90)∶m(φ80)∶m(φ60)∶m(φ40)=25∶25∶15∶20∶15 combining with ore properties by using of semi-theoretical formula.The industrial application was carried out by using of recommended medium proportional plan,the results show that through industrial application,the yield of 0.074mm size fraction overflow of hydrocyclone was increased by 2.92%,the coarse grained size fraction(+0.15 mm)was decreased by 0.13%,the middle size fraction content(-0.15+0.01)mm was increased by 4.44%,which means the industrial application can effectively improve the uniformity of granularity composition;handling capacity was increased by 5.2 t/h;unit power consumption for ore grinding was decreased by 1.46%;the medium consumption for ore grinding was decreased by 0.11 kg/t;recovery rate of lead and zinc was increased by 0.03%and 1.04%separatly.

关 键 词：矿石性质 磨矿 介质配比 粒度组成 工业化应用 回收率 

分 类 号：TD453[矿业工程—矿山机电]