利用固定床吸附器从捷热克盐湖卤水中连续回收锂和硼

IF 4.8 2区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Mengxiang Lu, Yao Miao, Ying Yang, Ping Li
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引用次数: 0

摘要

中国的四川盐湖卤水富含锂离子,同时还含有相对较高浓度的碳酸盐和硼酸盐阴离子。碳酸盐和硼酸盐阴离子都具有 pH 缓冲能力,可以接受锂离子筛交换的 H+ 离子,从而增强对 Li+ 离子的吸附过程。当捷克盐湖卤水通过钛型离子筛填料柱时,由于卤水中的 pH 缓冲作用,会产生良好的锂突破,这对工业生产中从卤水中有效回收锂具有重要意义。此外,捷热克盐湖卤水中的硼含量较高,其回收在工业应用中也很有价值。在此,我们在钛型离子筛填料柱后面串联了一个 N-甲基葡胺树脂填料柱,以同时获得硼,从而降低锂回收的能耗和成本。在吸附过程中,捷热克盐湖的盐水依次进入锂和硼吸附柱。然后通过酸性溶液洗涤对两个填料柱进行独立解吸,以获得锂和硼洗脱液。实验研究了锂和硼在填料柱中的突破行为和洗脱性能,并评估了拟议工艺的实用性和有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Continuous recovery of lithium and boron from Jezechake Salt Lake brine using fixed-bed adsorbers

Jezechake Salt Lake brine in China is rich in lithium ions coexisting with relatively high concentrations of carbonate and borate anions. Both carbonate and borate anions have a pH-buffering ability to accept the exchanged H+ ions of lithium ion sieves, enhancing the adsorption process of Li+ ions. When Jezechake Salt Lake brine passes through a titanium-type ion-sieve-packed column, good lithium breakthrough occurs owing to the pH-buffering action in the brine, which is of great significance for effective lithium recovery from brines in industrial production. In addition, the boron content of Jezechake Salt Lake brine is high, and its recovery is valuable for industrial applications. Here, an N-methylglucamine resin-packed column was connected in series behind a titanium-type ion-sieve-packed column to obtain boron simultaneously with the aim of lowering the energy consumption and cost of lithium recovery. During the adsorption process, Jezechake Salt Lake brine was successively fed into the lithium and boron adsorption columns. The two packed columns were then desorbed independently through acidic solution washing to obtain the Li and B eluents. The breakthrough behavior and elution performance of Li and B in the packed columns were investigated experimentally, and the practicability and efficacy of the proposed process were assessed.

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来源期刊
Hydrometallurgy
Hydrometallurgy 工程技术-冶金工程
CiteScore
9.50
自引率
6.40%
发文量
144
审稿时长
3.4 months
期刊介绍: Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro-refining; pre-treatment of ores by roasting or chemical treatments such as halogenation or reduction; recycling of reagents and treatment of effluents.
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