云南冶金2026，Vol.55Issue(4)：49-53,72,6.
立磨机用于锡铜共生矿返砂再磨作业的半工业试验研究
Study on Pilot Test of Vertical Mill for Regrinding of Classifier Sands of Tin-copper Associated Ore
摘要
Abstract
Aiming at the common industrial problems existing in the concentrator of a tin-copper associated ore mine in Yunnan,such as large circulating load,excessive ball mill load and easy overgrinding of cassiterite,which restrict the improvement of concentrator throughput and the optimization of separation indexes,semi-industrial tests on regrinding of circulating sands were carried out using KLM-75 vertical spiral stirred mill.The influences of key process parameters including media filling ratio,equipment throughput and grinding concentration on grinding efficiency,product particle size distribution and energy consumption were systematically investigated,and the optimal operating parameter ranges were determined through multi-condition comparative tests.The research results show that when the vertical mill adopts mixed steel balls of 25 mm and 30 mm as grinding media,under the operating conditions of media filling ratio of 30％～35％and throughput of 11～12.5 t/h,the yield of the-0.074 mm size fraction in grinding products meets the process requirement of ≥40％,and the yield of the overground-0.01 mm size fraction can be controlled within 10％.The unit grinding energy consumption is as low as approximately 4.5 kW·h/t,realizing the dual goals of monomer dissociation of copper minerals and prevention and control of cassiterite overgrinding.This study confirms the technical feasibility and economic superiority of vertical mills for circulating sand regrinding of tin-copper associated ore.The research findings can offer direct parameter support for capacity expansion and technical renovation of the concentrator's grinding system,and provide a reference case for optimizing grinding flowsheets of similar complex associated metallic ores.关键词
立磨机/锡铜共生矿/半工业试验/磨矿效率/能耗Key words
vertical mill/tin-copper associated ore/pilot test/grinding efficiency/energy consumption分类
矿业与冶金引用本文复制引用
矣建林,柳彦昊,陶云肖,侯孝安..立磨机用于锡铜共生矿返砂再磨作业的半工业试验研究[J].云南冶金,2026,55(4):49-53,72,6.基金项目
云南省创新引导与科技型企业培育计划—科技揭榜制专项(202504BW050001) （202504BW050001）
