某锂云母矿浮选试验研究  

Experimental Study on Flotation of a Lepidolite Ore

作　　者：程仁举[1,2,3] 李成秀[1,2,3] 李潇雨[1,2,3] 刘星 蒋朋[1,2,3] 邓善芝 CHENG Renju;LI Chengxiu;LI Xiaoyu;LIU Xing;JIANG Peng;DENG Shanzhi(Institute of Multipurpose Utilization of Mineral Resources,Chengdu 610041,China;Research Center of Multipurpose Utilization of Metal Mineral Resources of China Geological Survey,Chengdu 610041,China;Technology Innovation Center of Rare Earth Resources Development and Utilization,China Geological Survey,Chengdu 610041,China)

机构地区：[1]中国地质科学院矿产综合利用研究所,成都610041 [2]中国地质调查局金属矿产资源综合利用技术研究中心,成都610041 [3]中国地质调查局稀土资源应用技术创新中心,成都610041

出　　处：《有色金属(选矿部分)》2025年第3期59-64,共6页Nonferrous Metals(Mineral Processing Section)

基　　金：国家重点研发计划项目(2023YFC2908200);四川省自然资源厅科研项目(KJ-2023-003);四川省科技计划项目(2022YFS0454,2022YFS0509);四川省科技厅重点研发项目(2023YFG0095)。

摘　　要：近年来,随着动力电池、储能设备等的快速发展,锂的需求呈现爆发式增长,锂云母矿是我国硬岩型锂资源的重要类型,开展锂云母矿的清洁开发利用对我国锂资源保障具有重要意义。某锂云母矿Li_(2)O品位为0.79%,主要含锂矿物为锂云母,其次为锂长石和锂辉石,脉石矿物主要有石英、斜长石和钾长石,矿石中主要矿物的嵌布粒度较粗。以该锂云母矿为研究对象,考察了脱泥工艺对锂云母分选效果的影响,采用自主研发捕收剂LM-3,开展选矿工艺优化试验研究。结果表明,该矿样适宜的分选工艺为不脱泥直接浮选工艺,采用该工艺,在中性条件下(矿浆pH为8.0~8.5),磨矿细度为−0.074 mm粒级含量占44.8%,配以自主研发的高效锂云母捕收剂LM-3,经一粗二精一扫的浮选闭路试验流程,最终获得了产率22.69%,Li_(2)O品位3.13%、Li_(2)O回收率87.60%的锂云母精矿,实现了矿石中锂云母的高效回收,为同类型资源的高效开发提供了研究思路。In recent years,with the rapid development of power batteries and energy storage equipment,the demand for lithium has shown explosive growth.The lepidolite ore is an important type of hard rock lithium resources in China,and the efficient development and utilization of lithium mica ore is of great significance for the guarantee of lithium resources in China.The Li_(2)O grade of a lepidolite ore is 0.79%,with the main lithium minerals being lepidolite,followed by lithium feldspar and spodumene.The gangue minerals mainly include quartz,plagioclase and potassium feldspar,and the main minerals in the ore have coarse distribution granularity.The influence of desliming process on the separation efficiency of lithium mica was investigated,and the independently developed collector LM-3 was used to carry out experimental research on the optimization of mineral processing technology.In order to efficiently utilize the lithium ore resources,beneficiation tests have bean conducted.The results indicate that the optimal separation process is direct flotation without desliming.Under neutral conditions(slurry pH 8.0-8.5)and with grinding fineness of-0.074 mm accounting for 44.8%,combined with selfdeveloped high efficiency lepidolite collector LM-3,through one roughing,two cleanings and one scavenging flotation closed-circuit process,a lepidolite concentrate with yield of 22.69%,Li_(2)O grade of 3.13%and Li_(2)O recovery of 87.60%was obtained,achieving efficient recovery of lepidolite in the ore,provided research ideas for efficient development of similar resources.

关 键 词：锂云母 浮选 调整剂 磨矿细度 

分 类 号：TD952[矿业工程—选矿] TD923