有色金属科学与工程2026，Vol.17Issue(4)：515-524,10.DOI:10.13264/j.cnki.ysjskx.2026.04.004
钙盐脱铝-树脂吸附法从镓电积贫液中选择性分离镓铝
Selective separation of gallium-aluminum from gallium depleted electrolyte by calcium salt de-alumination and resin adsorption
摘要
Abstract
Gallium,as a strategic rare metal,is often associated with elements such as zinc and aluminum.In the oxygen-pressure zinc hydrometallurgical system,gallium is typically recovered through a leaching-enrichment-extraction-electrowinning process.The gallium concentration of the depleted solution after electrowinning is generally 5～10 g/L.The aluminum concentration can reach as high as 25 g/L,and the accumulation of recycled aluminum increases the burden of gallium electrowinning and reduces gallium quality.For this reason,this study designed a calcium oxide de-alumina-resin(ZGD887)adsorption of gallium de-alumina/gallium-rich double-effect process,with the gallium electrowinning depleted solution provided by an enterprise as the raw material,to explore the optimal conditions of calcium oxide de-alumina,and examined the effect of adsorption conditions on the gallium performance of the resin adsorption of de-alumina solution after the performance of gallium.The results showed that calcium oxide could induce the conversion of aluminum to calcium aluminate hexahydrate in the electro-gallium depleted solution,thereby achieving aluminum removal.Under conditions of a temperature of 90℃,a reaction time of 120 min,and twice the theoretical mass of calcium oxide,the precipitation efficiency of aluminum reached 92.44%and the loss efficiency of gallium was only 12.60%.Then,under adsorption conditions of 30℃,resin dosage of 0.1 g/mL,and oscillation rate of 250 r/min,the total recovery efficiency of gallium reached 83.05%after four adsorption cycles.By applying the calcium salt de-aluminized resin adsorption method,the aluminum removal rate was 92.44%and the comprehensive gallium recovery rate was 72.59%,achieving open-circuit of aluminum in the electro-gallium lean solution and efficient enrichment of low-concentration gallium.关键词
镓电积贫液/铝脱除/选择性分离/树脂吸附Key words
gallium depleted electrolyte/aluminum removal/selective separation/resin adsorption分类
矿业与冶金引用本文复制引用
何王旗,刘付朋,王杰,陈飞雄,廖春发,蒋涛,曹欣阳,曾霖..钙盐脱铝-树脂吸附法从镓电积贫液中选择性分离镓铝[J].有色金属科学与工程,2026,17(4):515-524,10.基金项目
国家自然科学基金重点资助项目(92575205) （92575205）
江西省高等学校大学生创新创业训练计划项目(202410407012) （202410407012）
江西省2024年度研究生创新专项资金项目(YC2024-B211) （YC2024-B211）
江西省科技厅赣鄱英才创新高端人才项目(gpyc20240066) （gpyc20240066）
江西省杰出青年自然科学基金资助项目(20232ACB214006) （20232ACB214006）
江西省主要学术和技术带头人项目(20225BCJ23009) （20225BCJ23009）
江西省博士后科学基金项目(2019KY07) （2019KY07）
