除硼树脂再生含锂废液资源化利用研究  

Study on Resource Utilization of Waste Liquids Containing Lithium from Regeneration of Resin for Boron Removal

作　　者：尹思鳗 罗权丽 丁檬 杨晓璐 石金雨 刘树信[1] 李松[1] YIN Siman;LUO Quanli;DING Meng;YANG Xiaolu;SHI Jinyu;LIU Shuxin;LI Song(School of Chemistry and Chemical Engineering,Mianyang Teachers'College,Mianyang Sichuan,621000;Sichuan Zhiyuan Lithium Industry Co.,Ltd,Deyang Sichuan,618000;Anzhou Ecological Environment Monitoring Station of Mianyang City,Mianyang Sichuan,621000)

机构地区：[1]绵阳师范学院化学与化学工程学院,四川绵阳621000 [2]四川致远锂业有限公司,四川德阳618000 [3]绵阳市安州生态环境监测站,四川绵阳621000

出　　处：《绵阳师范学院学报》2025年第2期58-62,共5页Journal of Mianyang Teachers' College

摘　　要：盐湖卤水提锂生产过程中,在除硼阶段会产生树脂再生废液,为了提高生产效益,设计了“脱硫除硼—沉锂—蒸发结晶—调浆洗涤—母液回用”工艺,将废液中有价元素进行了高值化利用.经试验优化,硫酸根和硼去除率均达98%以上,碳酸锂产品纯度为98.2%,锂回收率达到80%以上,钾钠得到有效分离,回收得到工业级氯化钠,副产品含硼酸钙硫和硫酸钙的固体作为硼肥原料使用.工艺操作便捷,能耗低,环保程度高,实现了对废液中有价元素的充分回收利用.In the process of extracting lithium from salt lake brine,resin regeneration waste liquid is produced in the boron removal section.In order to improve the production efficiency,the process of“desulfurization and boron removal-lithium,precipitation,crystallization,washing,mother liquor reuse”is designed,and the valuable elements in the waste liquid are utilized with high value.Under optimized conditions,the removal rates of sulfate and boron were all over 98%,the purity of lithium carbonate product was 98.2%,and the recovery rate of lithium was over 80%.Potassium and sodium could be effectively separated,and the recovered sodium chloride could be used in industry.The by-product calcium,sulfur and boron solid could be used as boron fertilizer raw material.The process operation was convenient,the energy consumption was low,and the environmental protection degree was high.The valuable elements in the waste liquid could be fully recycled.

关 键 词：含锂废液 资源化利用 锂回收 除硼 

分 类 号：O61[理学—无机化学]