动态模式下KU-2-8阳离子交换剂对地热流体模型溶液中锂的吸附研究

IF 2.4 Q2 MINING & MINERAL PROCESSING
T. Belova, T. Ratchina
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引用次数: 1

摘要

从水矿物原料中提取化合物是目前一个很有前途的目标。堪察加地区的地热矿床应被认为是锂、硼和其他化合物的可能来源。地热流体资源使用的复杂性证明了它们的经济效率是合理的。本文介绍了KU-2-8阳离子交换剂在动态模式下模拟地热流体的模型溶液中吸附锂的实验研究结果。结果表明,在吸附的第一阶段,离子交换导致锂离子和钠离子被氢形式的阳离子交换剂吸收,达到阳离子交换剂饱和程度的78%。之后,观察到锂离子被钠离子置换。得到的中间溶液中Li/Na的摩尔比是初始溶液的80倍。为了分离钠和锂,建议使用由一部分氯化锂精矿得到的锂离子形式的阳离子交换剂。分离的发生是由于锂离子被钠离子取代。出水的摩尔比Li/Na = 10.4。在氯化钠浓度系数为3的条件下,用1n盐酸进行再生。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research of lithium sorption by KU-2-8 cation exchanger from model solutions simulating geothermal fluids in the dynamic mode
The extraction of chemical compounds from hydromineral raw materials is currently a promising objective. The geothermal deposits in the Kamchatka Territory should be considered as possible sources of lithium, boron and other chemical compounds. Their economic efficiency is justified by the complexity of the use of resources of geothermal fluids. The article presents data obtained as a result of experimental studies of lithium sorption by KU-2-8 cation exchanger from model solutions that simulate geothermal fluids in the dynamic mode. It was shown that in the first phase of sorption, ion exchange results in the absorption of lithium and sodium ions by the hydrogen form of cation exchanger up to the degree of cation exchanger saturation by 78 %. After that, the displacement of lithium ions by sodium ions is observed. The intermediate solutions were obtained in which the molar ratio of Li/Na is 80 times higher than in the initial solution. To separate sodium and lithium, it is proposed to use the lithium form of cation exchanger obtained using a portion of lithium chloride concentrate. The separation occurs due to the displacement of lithium ions by sodium ions. The effluent has a molar ratio of Li/Na = 10.4. The regeneration is carried out with 1 n hydrochloric acid, while the concentration coefficient of sodium chloride equals three.
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来源期刊
Journal of Mining Institute
Journal of Mining Institute MINING & MINERAL PROCESSING-
CiteScore
7.50
自引率
25.00%
发文量
62
审稿时长
8 weeks
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