江西宜丰低品位锂云母矿中锂云母和长石的综合回收研究  

Study on Comprehensive Recovery of Lithium Mica and Feldspar from Low Grade Lepidolite Ore in Yifeng of Jiangxi

作　　者：杨志兆 杨思琦 谢帆欣 胡鑫 张永兵 周贺鹏 罗仙平 YANG Zhizhao;YANG Siqi;XIE Fanxin;HU Xin;ZHANG Yongbing;ZHOU Hepeng;LUO Xianping(Jiangxi Provincial Key Laboratory of Environmental Pollution Control of Mining and Metallurgy,Ganzhou 341000,Jiangxi,China;Engineering Research Center for Efficient Development and Application of Tungsten Resources,Ministry of Education,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西省矿冶环境污染控制重点实验室,江西赣州341000 [2]钨资源高效开发及应用技术教育部工程研究中心,江西赣州341000

出　　处：《矿产保护与利用》2022年第3期24-29,共6页Conservation and Utilization of Mineral Resources

基　　金：国家自然科学基金项目(52064017);江西省重点研发计划(20181BBG70050);江西省自然科学基金项目(20202BABL204034);江西省教育厅科技项目(GJJ190425);江西省青年井冈学者奖励计划;江西理工大学清江青年英才支持计划资助;江西省重点研发计划项目(20214BBG74001)。

摘　　要：江西宜丰地区锂云母矿风化严重、矿物赋存形式复杂,锂云母中Li_(2)O理论品位较低,为实现该锂云母矿中锂云母和长石的高效回收,开展了详细的选矿试验研究。研究结果表明,采用脱泥—浮选—磁选工艺,首先对原矿进行脱泥,降低了微细粒脉石矿物在锂云母矿物表面的罩盖,然后以高选择性捕收剂ZY浮选锂云母,实现了锂云母与脉石矿物的有效分离,最终获得含Li_(2)O 1.73%、回收率75.87%的锂云母精矿;浮选尾矿经磁场强度为1.5 T的高梯度磁选除铁后,可获得作业产率为94.31%、含Na_(2)O 5.78%、K_(2)O_(3).08%、Fe_(2)O_(3)0.07%、白度为67.21%的长石精矿,可作为陶瓷原料使用。该工艺处理锂云母矿获得了良好的选矿指标,实现了锂云母及长石的综合回收。The lepidolite ore in Yifeng area of Jiangxi Province is seriously weathered and the occurrence form of minerals is complex.The theoretical grade of Li_(2)O in lepidolite is low.In order to realize the efficient recovery of lithium and feldspar from the lepidolite ore,the detail beneficiation test research was carried out.The results showed that the process of desliming-flotation-magnetic separation was adopted.First,the raw ore was deslimed to reduce the cover of fine gangue minerals on the surface of lithium mica.Then,the flotation of lithium mica with highly selective collector ZY could effectively separate lepidolite from gangue minerals.The lepidolite concentrate with Li_(2)O content of 1.73%and recovery rate of 75.87%was obtained.After iron removal from flotation tailings by high gradient magnetic separation with magnetic field intensity of 1.5 T,the feldspar concentrate with operation yield of 94.31%,Na_(2)O 5.78%,K_(2)O_(3).08%,Fe_(2)O_(3)0.07%and whiteness of 67.21%could be obtained and used as ceramic material.The process had achieved good beneficiation indexes for the treatment of lepidolite ore,and realized the comprehensive recovery of lepidolite and feldspar.

关 键 词：锂云母 长石 捕收剂 综合回收 浮选 磁选 

分 类 号：TD955[矿业工程—选矿]