察尔汗盐湖老卤锂富集多级精控盐田工艺扩大实验  

Expansion Experiment of Multi-stage Precision Control Process for Lithium Enrichment in Qarhan Salt Lake Brine

作　　者：吕学成 史忠录 唐永全 李志伟 LYU Xuecheng;SHI Zhonglu;TANG Yongquan;LI Zhiwei(Qinghai Salt Lake Magnesium Industry Co.,Ltd.,Golmud 816000,Qinghai,China;Qinghai Salt LakeIndustry Group Co.,Ltd.,Golmud 816000,Qinghai,China;Qinghai Salt Lake Yuantong Potash FertilizerCo.,Ltd.,Golmud 816000,Qinghai,China;Key Laboratory of Comprehensive and Highly EfficientUtilization of Salt Lake Resources,Qinghai Institute of Salt Lake,Chinese Academy of Sciences,Xining810008,Qinghai,China;Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province,Xining810008,Qinghai,China)

机构地区：[1]青海盐湖镁业有限公司,青海格尔木816000 [2]青海盐湖工业股份有限公司,青海格尔木816000 [3]青海盐湖元通钾肥有限公司,青海格尔木816000 [4]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [5]青海省盐湖资源化学重点实验室,青海西宁810008

出　　处：《矿产综合利用》2024年第4期50-56,共7页Multipurpose Utilization of Mineral Resources

基　　金：中国科学院STS区域重点项目(KFJ-STS-QYZD-2021-06-002);青海省科技厅重点研发与转化计划(2021-GX-C04)。

摘　　要：这是一篇矿业工程领域的论文。针对察尔汗盐湖老卤中锂离子的浓缩富集,采用蒸发结晶、分步分离的方法完成了老卤锂富集多级精控盐田工艺扩大实验,研究了锂、硼在蒸发过程中的富集规律,使锂离子浓度达到1 g/L以上,并获得了高品质的水氯镁石。对盐田蒸发过程进行了物料衡算,得到了各析盐阶段的实际成卤量和锂收率,以及日晒盐田的生产能力和各级盐田面积分配比例等,能够为今后实现察尔汗盐湖提钾老卤的综合开发利用提供可靠的数据支持。This is an article in the field of mining engineering.In view of the concentration and enrichment of lithium ions in old halide in Qerhan Salt Lake,the expansion experiment of the multi-stage precision control process of old halide enrichment was completed by means of evaporation crystallization and step separation.The enrichment law of lithium and boron during evaporation was studied.The concentration of lithium ions reached more than 1 g/L,and high quality hydrochloromagnite was obtained.The material balance of the evaporation process of the salt pan was carried out,and the actual halogen yield and lithium yield of each phase of salt extraction were obtained,as well as the production capacity of the sun salt pan and the area distribution ratio of each level of the salt pan,which can provide reliable data support for the comprehensive development and utilization of potassium old brine extraction in Qerhan Salt Lake in the future.

关 键 词：矿业工程 盐湖卤水 锂 水氯镁石 赋存状态 盐田工艺 

分 类 号：TD982[矿业工程—选矿]