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作 者:王梳桐 赵云良[1] 陈立才 董广峰 温通 马松亮 张婷婷 WANG Shutong;ZHAO Yunliang;CHEN Licai;DONG Guangfeng;WEN Tong;MA Songliang;ZHANG Tingting(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,Hubei,China;SDIC Xinjiang Luobupo Potash Co Ltd,Hami 839000,Xinjiang,China;School of Chemistry and Environmental Engineering,Wuhan University of Light Industry,Wuhan 430023,Hubei,China)
机构地区:[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]国投新疆罗布泊钾盐有限责任公司,新疆哈密839000 [3]武汉轻工大学化学与环境工程学院,湖北武汉430023
出 处:《矿冶工程》2023年第1期105-109,共5页Mining and Metallurgical Engineering
基 金:国家自然科学基金青年科学基金(51904215)。
摘 要:为提高卤水吸附提锂效率,开发了预浓缩-吸附法提锂工艺。基于50℃、100℃下Na^(+)、K^(+)//Cl^(-)-H_(2)O三元体系相图理论指导,研究了不同蒸发温度条件下卤水中锂的浓度及锂折损率随蒸发率的变化关系,对比了吸附剂对预浓缩前后卤水的吸附效果。结果表明,蒸发过程中溶液中锂浓度和锂折损率不受蒸发温度的影响;蒸发率超过40%后,卤水中锂折损率快速上升;以锰系吸附剂吸附蒸发率40%、锂浓度55 mg/L的预浓缩卤水中的锂,4 h后吸附容量达4.25 mg/g,高于吸附剂对原卤的吸附容量(3.39 mg/g),证实卤水预浓缩处理可以强化吸附提锂效果。In order to improve the efficiency of lithium extraction by brine adsorption, a process consisting of pre-concentration and adsorption was developed for lithium extraction. Based on the theory of phase diagram of Na^(+), K^(+)//Cl^(-)-H_(2)O ternary system at 50 ℃ and 100 ℃, variation of lithium concentration and lithium loss rate in brine at different temperatures with different evaporation rate was explored in the test, and the adsorption effects of adsorbents on brine before and after pre-concentration were compared. The results show that the concentration and loss rate of lithium in the solution are not affected by evaporation temperature. As the evaporation rate exceeded 40%, the loss rate of lithium in brine increased rapidly. The pre-concentrated brine with concentration of 55 mg/L lithium at an evaporation rate of 40% was adsorbed with manganese absorbent, showing that the lithium adsorption capacity reached 4.25 mg/g after 4 hours, higher than the adsorption capacity of 3.39 mg/g in the original brine without pre-concentration. It is proven that brine pre-concentration can enhance the adsorption effect of lithium brine extraction.
关 键 词:盐湖卤水 提锂 江汉盆地卤水 吸附法提锂 预浓缩 锂
分 类 号:TF111[冶金工程—冶金物理化学]
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