探讨一段磨矿回路中的磁性分离  

STUDY ON MAGNETIC SEP ARATION IN PRIMARY CLOSED-CIRCUIT GRINDING

作　　者：刘永振[1] 

机构地区：[1]北京矿冶研究总院设备研究所

出　　处：《矿冶》1995年第4期62-66,共5页Mining And Metallurgy

摘　　要：１０５０×４００ｍｍ永磁简式磁分离机具有分级、分选双重作用，对磁铁矿的分选能按矿物磁性差异将其分成粗精矿、中矿和尾矿三种产品。用首钢大石河选矿厂一段球磨权排矿和一次螺旋分级机返砂进行的实验室半工业试验表明：在一段磨矿回路中联合利用磁分离机和分级机能很好地实现随着矿物经磨矿解离，随时回收粗精矿和抛出尾矿。该技术的不断完善和生产应用将对选矿厂增产、降耗，改善选矿工艺指标发挥作用。?00mm permanent drum-type magnetic separator has two functions.One is separation,the other is classification.Three kinds of produ-cts:coarse concentrates, middlings and tailings can be produced from this separator according to the difference of magnetic property of magnetite.Pilot tests have been done on discharge from primary ball mill and sand of prima-ry spiral classifier at Dashihe Concentrator of Shoudu Iron and Steel Compa-ny.The experimental results showed that, through combination applicationof magnetic separator and classifiers in primary closed-circuit grinding, bet-ter recovery of coarse concentrate and discarding of tailings along with mine-ral liberation can be obtained. Steady improvement and production applicationof this technology will give higher production,lower energy consumption andbetter improvement on metallurgical performances of concentrator.

关 键 词：选矿 磨矿 回路 磁选机 分离 

分 类 号：TD921.4[矿业工程—选矿]