从含锂矿石酸性浸出液中提取锂试验研究  

Recovery of Lithium From Acidic Leaching Solution of Lithium-containing Ore

作　　者：武用 张小云[1] 田学达 姚钟威 罗义威 WU Yong;ZHANG Xiaoyun;TIAN Xueda;YAO Zhongwei;LUO Yiwei(School of Chemical Engineering,Xiangtan University,Xiangtan 411105,China;School of Environment and Resources,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]湘潭大学化工学院,湖南湘潭411105 [2]湘潭大学环境与资源学院,湖南湘潭411105

出　　处：《湿法冶金》2020年第3期182-185,共4页Hydrometallurgy of China

摘　　要：研究了采用氢氧化铝吸附沉淀锂—焙烧—水浸工艺从含锂矿石酸性浸出液中提取锂。结果表明:在搅拌时间5h、溶液pH=7、吸附温度40℃条件下用氢氧化铝吸附沉淀锂,锂沉淀率为98.7%;沉淀物在500℃下焙烧40min,然后用水浸出,控制液固体积质量比1.5∶1、浸出温度45℃、浸出时间4h,锂浸出率达99%,锂的回收效果较好。By the process of aluminum hydroxide adsorption and precipitation—roasting—water leaching,the lithium in the sulfuric acid leachate of lithium-containing ore was extracted.The test results show that under the conditions of stirring time of 5h,solution pH of 7,temperature of 40℃,the lithium precipitation ratio reaches 98.7%.The precipitate is roasted for 40min at 500℃,then is leached for 4hunder the conditions of liquid-to-solid ratio of 1.5∶1and temperature of 45℃,the lithium leaching rate of 99%can be reached.

关 键 词：锂矿石 浸出液 锂 吸附 焙烧 水浸 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF826.3