从CIGS废料中回收金属铜的研究

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关键词：铜铟镓硒（CIGS）废料；硫酸熟化；水溶浸出；萃取铜中图分类号：X76 文献标识码：A 文章编号：1008-9500（2025）05-0018-05DOI： 10.3969/j.issn.1008-9500.2025.05.004

Abstract： Cu-In-Ga-Se （CIGS）thin film solar cels are widely used，and their waste contains about 20% copper element， it is necessary torecover metaliccopperfrom CIGS waste.The wasteis matured with sulfuric acid toformsoluble sulfates， whicharethen extractedand electrodeposited toobtaincopper metal.Researchhas shownthatwithanacidto materialratio of 2.5 and three-stage roasting，the waste can be efectively matured，and the dissolution rate of copper exceeds 99 % . When the liquid-solidratio is15，soaking thematured material in watercanobtain amaterial solution withacopper contentof （204号 12g/L . When the concentration of Lix984 extractant is 25% and the volume ratio of Organic phase to Aqueous phase （O/A） in the extractionsystem is2，thefeedsolutionissubjected totwo-stage countercurrent extraction，andthe extractionate exceeds 98.5% ，the reverse extraction solution is electrodeposited to obtain cathode copper with a purity of over 99.95% ：

Keywords： Cu-In-Ga-Se （CIGS） waste; sulfuric acid maturing; water soluble leaching; extraction of copper

铜铟镓硒（ Cu-In-Ga-Se ，CIGS）薄膜太阳能电池是一种重要的太阳能电池，其最高光能转化率目前可达 23.35% 。（剩余4988字）