大坪选矿厂磨矿介质制度优化试验研究  

Experimental study on the optimization of grinding media regime in Daping Concentrator

作　　者：王旭东 肖庆飞[1,2] 张谦 杨森 马帅[1] Wang Xudong;Xiao Qingfei;Zhang Qian;Yang Sen;Ma Shuai(Faculty of Land Resources Engineering,Kunming University of Science and Technology;State Key Laboratory of Mineral Processing Science and Technology)

机构地区：[1]昆明理工大学国土资源工程学院 [2]矿物加工科学与技术国家重点实验室

出　　处：《黄金》2019年第8期53-56,共4页Gold

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实验室开放研究基金专项资助(201707)

摘　　要：针对大坪选矿厂粗磨磨矿产品粒度均匀性差,磨机利用系数低,磨矿技术效率低等问题,根据矿石力学性质,确定了粗磨推荐介质制度为m(φ100)∶m(φ80)∶m(φ60)∶m(φ40)∶m(φ30)=20∶25∶20∶25∶10,进行了不同磨矿介质制度的磨矿对比试验。结果表明:推荐介质制度与现场介质制度相比,过粗粒级+0. 45 mm产率降低了3. 40百分点;中间易选粒级-0. 150^+0. 038 mm和磨矿细度-0. 074 mm产率分别提高了8. 30百分点和5. 39百分点;磨矿技术效率提高了3. 91百分点,磨机-200目利用系数提高了20. 02%;在粗磨阶段,推荐介质制度与现场介质制度相比,磨矿效果更好。In view of the poor uniformity of particle size of roughly ground products in Daping Concentrator,the low utilization coefficient of mills and the low grinding technology efficiency,according to the mechanical properties of the ores,the rough grinding media regime was decided to be m(φ100) ∶ m(φ80) ∶ m(φ60) ∶ m(φ40) ∶ m(φ30) = 20 ∶25 ∶ 20 ∶ 25 ∶ 10 and the comparison test on different grinding media was carried out. The results show that compared to the on-site media regime, the recommended media regime can lower the productivity of the coarse-grained grade+ 0. 45 mm by 3. 40 percentage points;the productivity of the intermediate easy-selection grades-0. 150-+ 0. 038 mm and the grinding fineness-0. 074 mm are increased by 8. 30 and 5. 39 percentage points,respectively;the grinding technology efficiency is improved by 3. 91 percentage points,the mill-200 mesh utilization factor is increased by 20. 02 %. Therefore,in the rough grinding stage,the recommended media regime has better grinding effect than the on-site media regime.

关 键 词：介质制度 磨矿技术效率 磨矿产品 磨机利用系数 粗磨 

分 类 号：TD921.4[矿业工程—选矿]