Extraction of lithium from salt lake brine by aluminum-based alloys  

采用铝基材料从盐湖卤水中沉淀锂（英文）

作　　者：李艳红[1] 赵中伟[1] 刘旭恒[1] 陈星宇[1] 钟茂礼 

机构地区：[1]中南大学冶金与环境学院,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2015年第10期3484-3489,共6页中国有色金属学报（英文版）

基　　金：Project(U1407137)supported by the National Natural Science Foundation of China

摘　　要：Salt lake brine was reacted with activated aluminum-based alloys and lithium was precipitated.The effects of aluminum-based alloys on precipitating lithium were investigated and the reasonable alloy used to extract lithium from brine was obtained.The effects of the mole ratio of Al to Li and Ca content of Al-Ca alloy,the initial concentration of lithiumion ion in solution,reaction temperature and reaction time on the adsorption rate of lithium were studied,and the optimized process parameters were determined.The results show that the mole ratio of Al to Li and Ca content of Al-Ca alloy and reaction temperature have great influences on the precipitation rate of lithium.The precipitation rate of lithium reaches 94.6% under the optimal condition,indicating that Al-Ca alloy is suitable for the extraction of lithium from salt lake brine.采用活化后的铝基材料分解卤水,同步实现卤水中锂的沉淀。研究不同的铝基材料吸附沉淀锂的效果,筛选出适合于提锂的铝基材料,并研究Al/Li摩尔比、Al-Ca合金中的Ca含量、溶液初始锂离子浓度、反应温度和时间等因素对锂沉淀率的影响,确定最优工艺参数。结果表明:Al/Li摩尔比、Ca含量和反应温度对锂沉淀率的影响较大;在优化后的工艺条件下,卤水中锂的沉淀率达到94.6%,Al-Ca合金的提锂效果良好。

关 键 词：salt lake brine lithium extraction aluminum matrix composite Al-Ca alloy 

分 类 号：TF826.3[冶金工程—有色金属冶金]