山东某黄金选矿厂球磨机磨矿介质配比优化试验  

Research on Optimization of Grinding Medium Ratio of Ball Mill in a Gold Concentrator in Shandong

作　　者：杨光 宋宝旭 施雨航 王帅 周兰 YANG Guang;SONG Baoxu;SHI Yuhang;WANG Shuai;ZHOU Lan(School of Mining Engineering,University of Science and Technology Liaoning)

机构地区：[1]辽宁科技大学矿业工程学院,辽宁省鞍山市114051

出　　处：《现代矿业》2025年第3期158-162,共5页Modern Mining

摘　　要：山东某黄金选矿厂为了解决因球磨机补加钢球制度不合理、磨矿产品粒度粗、水力旋流器分级负荷高导致的磨矿处理能力不足等问题,采用段氏球径半理论公式计算了各段球磨机的初装钢球级配,并通过段式作图法确定了各段球磨机后续补加球方案。试验最终确定的一段球磨机初装球ϕ100 mm、ϕ70mm、ϕ50mm钢球配比为10%∶65%∶25%,补加球ϕ100 mm、ϕ70 mm钢球配比为50%∶50%;二段球磨机初装球ϕ40 mm、ϕ30 mm钢球配比为60%∶40%,补加单一ϕ40 mm钢球或按ϕ50 mm、ϕ40 mm钢球配比60%∶40%补加。对现场工艺调整后,运用推荐的球磨机初装、补加球方案与现场进行对比,结果表明:该选厂处理量从69 t/h提高至75 t/h,球单耗从1.14 kg/t降至0.87 kg/t,电耗从13.52(kW·h)/t降至11.28(kW·h)/t,优化效果显著,该试验方案为现场磨矿工业优化提供了理论指导及依据。In order to solve the problems of insufficient grinding treatment capacity caused by unrea-sonable steel ball feeding system of ball mill,coarse particle size of grinding products and high classification load of hydrocyclone in a gold concentrator in Shandong Province,Duan's ball diameter semi-theory formu-la of ball diameter is used to calculate the initial steel ball grading of each section of ball mill,and the subse-quent ball feeding scheme of each section of ball mill is determined by Duan's drawing method.The ratio of ϕ100 mm,ϕ70 mm and ϕ50 mm steel balls in the primary ball mill is 10%:65%∶25%,and the ratio ofϕ100 mm andϕ70 mm steel balls added is 50%:50%.The ratio of ϕ40 mm and ϕ30 mm steel balls in the initial ball of the two-stage ball mill is 60%∶40%,and a singleϕ40 mm steel ball is added or by the ratio of ϕ50 mm and ϕ40 mm steel balls is 60%∶40%.After on-site process adjustment,the recommended ball mill initial loading and ball addition schemes are compared with the site.The results showed that the processing capacity of the plant increased from 69 t/h to 75 t/h,the ball unit consumption decreased from 1.14 kg/t to 0.87 kg/t,and the power consumption decreased from 13.52(kW·h)/t to 11.28(kW·h)/t.The optimization ef-fect is remarkable.The test scheme provides theoretical guidance and basis for on-site grinding industrial optimization.

关 键 词：精确化补装球法 段式半理论公式 介质配比 金矿 

分 类 号：TD4[矿业工程—矿山机电]