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2012•Hydrometallurgy of ChinaRequires access

Experimental Study on Recovery of Gallium From Gallium-germanium Concentrate

Lan Yao-zhong

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Abstract

Recovery of gallium from gallium-germanium concentrate was studied.The effect of leaching temperature and time on gallium leaching rate and effect of solution acidity and extraction time on gallium extraction was examined.The results show that gallium leaching rate was over 93% using industry hydrochloric acid of 7.95 mol/L at the conditions of leaching temperature of 75 ℃,leaching time of 2.5 hours,and recovery rate of gallium was over 92% at the conditions of solution acidity of 9.0 mol/L,phase ratio(Va∶Vo) of 3∶1,4 times extraction and back-extraction using 20 g/L NaOH solution and electrolyzing after adjusting pH using 300 g/L NaOH solution.

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Recovery of gallium from gallium-germanium concentrate was studied.The effect of leaching temperature and time on gallium leaching rate and effect of solution acidity and extraction time on gallium extraction was examined.The results show that gallium leaching rate was over 93% using industry hydrochloric acid of 7.95 mol/L at the conditions of leaching temperature of 75 ℃,leaching time of 2.5 hours,and recovery rate of gallium was over 92% at the conditions of solution acidity of 9.0 mol/L,phase ratio(Va∶Vo) of 3∶1,4 times extraction and back-extraction using 20 g/L NaOH solution and electrolyzing after adjusting pH using 300 g/L NaOH solution.

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Available abstract

Recovery of gallium from gallium-germanium concentrate was studied.The effect of leaching temperature and time on gallium leaching rate and effect of solution acidity and extraction time on gallium extraction was examined.The results show that gallium leaching rate was over 93% using industry hydrochloric acid of 7.95 mol/L at the conditions of leaching temperature of 75 ℃,leaching time of 2.5 hours,and recovery rate of gallium was over 92% at the conditions of solution acidity of 9.0 mol/L,phase ratio(Va∶Vo) of 3∶1,4 times extraction and back-extraction using 20 g/L NaOH solution and electrolyzing after adjusting pH using 300 g/L NaOH solution.

Key concepts: Gallium, Leaching (pedology), Hydrochloric acid, Germanium, Chemistry, Hydrometallurgy, Extraction (chemistry), Nuclear chemistry

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