离子交换法从合成硫酸盐和氯化物溶液中分离Ni(II)、Co(II)、Mn(II)和Si(IV

Thi Thu Huong Nguyen, Jiangxian Wen, Man-Seung Lee
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引用次数: 0

摘要

废锂离子电池高温还原熔炼可生产金属合金。用硫酸或盐酸对这些金属合金的浸出液进行溶剂萃取后,发现萃液中含有Ni(II)、Co(II)、Mn(II)和Si(IV)。本研究采用两种阳离子交换树脂(Diphonix和P204)研究了这些离子在合成硫酸盐和氯化物溶液中的负载行为。实验结果表明,在pH为3.0的硫酸溶液中,Ni(II)、Co(II)和Mn(II)可以选择性地负载到Diphonix树脂上。在pH为6.0的氯化物溶液中,Mn(II)选择性地负载到P204树脂上,在出水中留下Ni(II)和Si(IV)。用h2so4和/或HCl进行洗脱实验,可以完全回收负载树脂中的金属离子。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Separation of Ni(II), Co(II), Mn(II), and Si(IV) from Synthetic Sulfate and Chloride Solutions by Ion Exchange
Reduction smelting of spent lithium-ion batteries at high temperature produces metallic alloys. Following solvent extraction of the leaching solutions of these metallic alloys with either sulfuric or hydrochloric acid, the raffinate is found to contain Ni(II), Co(II), Mn(II), and Si(IV). In this study, two cationic exchange resins (Diphonix and P204) were employed to investigate the loading behavior of these ions from synthetic sulfate and chloride solutions. Experimental results showed that Ni(II), Co(II), and Mn(II) could be selectively loaded onto the Diphonix resin from a sulfate solution of pH 3.0. With a chloride solution of pH 6.0, Mn(II) was selectively loaded onto the P204 resin, leaving Ni(II) and Si(IV) in the effluent. Elution experiments with H 2 SO 4 and/or HCl resulted in the complete recovery of metal ions from the loaded resin.
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