某锂云母矿石综合回收试验研究  

Experimental Study on Comprehensive Recovery of a Lepidolite Ore

作　　者：胡晖[1] 张政军 HU Hui;ZHANG Zhengjun(Changsha Non-ferrous Metallurgical Design and Research Institute Co.,Ltd.)

机构地区：[1]长沙有色冶金设计研究院有限公司

出　　处：《现代矿业》2023年第6期190-192,197,共4页Modern Mining

摘　　要：某锂云母试样Li_(2)O含量为0.42%,主要矿物为钾长石、钠长石和石英,有害杂质Fe_(2)O_(3)含量为0.62%。为确定试样的合理开发利用工艺进行了选矿试验研究。结果表明:试样在磨矿细度-0.074 mm 50%情况下脱出-0.019 mm泥后,采用1粗2精2扫、中矿顺序返回流程选锂,可获得Li_(2)O品位为3.17%、Li_(2)O回收率为70.81%的锂云母精矿;浮锂尾矿采用一段弱磁选+两段强磁选流程除铁,可得到Fe_(2)O_(3)含量0.12%的合格长石石英混合料。The Li_(2)O content in a lepidolite sample was 0.42%,in which the main minerals were potassium feldspar,albite and quartz.The harmful impurity Fe_(2)O_(3) content was 0.62%.In order to determine the reasonable utilization technology of the sample,beneficiation tests were carried out.The results showed that after the slime of -0.019 mm was extracted from the sample at the grinding fineness of -0.074 mm accounting for 50%,lithium concentrate with Li_(2)O grade of 3.17% and recovery rate of 70.81% could be obtained by the process of one roughing,two cleaning,two scavenging and medium ore return in sequence.A qualified feldspar quartz mixture with Fe_(2)O_(3) content of 0.12% could be obtained by removing iron from lithium tailings in a process of one-stage low intensity magnetic separation and two-stage high intensity magnetic separation.

关 键 词：锂云母 长石 石英 浮选 磁选 综合回收 

分 类 号：TD955[矿业工程—选矿]