用氯化胆碱-草酸从次氧化锌粉尘中梯级分离铟及伴生元素OA
Step-up Separation of Indium and Associated Elements from Zinc Oxide Dust Using Choline-Oxalic Acid Chloride
为高效富集次氧化锌粉尘中的铟并实现伴生元素的定向分离回收,研究采用氯化胆碱-草酸二水合物低共熔溶剂浸出粉尘中的Zn、Fe、Pb、In,并结合"水解脱锌铅—紫外光还原除铁"工艺进行分步除杂.结果表明:在液固体积质量比12 mL/1 g、温度70 ℃、时间6 h的优化浸出条件下,Zn、In、Pb、Fe浸出率分别达95.52％、88.91％、80.82％和89.13％;浸出液通过水解沉淀可脱除Zn/Pb,再经紫外光还原沉淀可脱除Fe;经此分步沉淀除杂处理后,溶液中In质量分数由0.03％提升至1.5％,能成功实现铟的高效富集,以及Zn、Pb、Fe等伴生元素的定向分离回收.
In order to efficiently enrich indium(In)in zinc oxide dust and realize the directional separation and recovery of associated elements,Zn,Fe,Pb and In were leached from the dust by choline chloride-oxalate dihydrate low eutectic solvent,and the"hydrolytic removal of zinc and lead-ultraviolet light reduction iron removal"process was used to remove impurities step by step.The results show that the leaching rates of Zn,In,Pb and Fe can reach 95.52％,88 91％,80.82％and 89.13％,respectively,under the optimal leaching conditions of liquid volume to solid mass ratio of 12 mL/1 g,temperature of 70 ℃ and time of 6 h.Zn/Pb is removed by hydrolytic precipitation,and then Fe is removed by ultraviolet reduction precipitation.After the step-by-step precipitation and impurity removal treatment,the mass fraction of indium in the solution has increased from 0.03％to 1.5％,successfully achieving efficient enrichment of indium and directional separation and recovery of associated elements such as Zn,Pb,and Fe.
张良进;刘勇志;于奇元;龙跃;张玉柱
华北理工大学冶金与能源学院,河北 唐山 063210||中冶检测认证有限公司,北京 100088华北理工大学冶金与能源学院,河北 唐山 063210||华北理工大学现代冶金技术教育部重点实验室,河北 唐山 063210华北理工大学冶金与能源学院,河北 唐山 063210||华北理工大学现代冶金技术教育部重点实验室,河北 唐山 063210华北理工大学冶金与能源学院,河北 唐山 063210||华北理工大学现代冶金技术教育部重点实验室,河北 唐山 063210华北理工大学冶金与能源学院,河北 唐山 063210||华北理工大学现代冶金技术教育部重点实验室,河北 唐山 063210
矿业与冶金
低共熔溶剂次氧化锌粉尘铟梯级提取浸出分离回收
deep eutectic solventzinc oxide dustindiumcascade extractionleachingseparationrecovery
《湿法冶金》 2026 (1)
52-57,6
国家自然科学基金区域创新发展联合基金资助项目(U20A20271).
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