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投稿时间：2011-12-29 修订日期：2011-12-29 录用日期：2011-12-31 网络发布日期：2012-07-25
投稿时间：2011-12-29 修订日期：2011-12-29 录用日期：2011-12-31 网络发布日期：2012-07-25
中文摘要: 研究了拜耳法赤泥盐酸浸出镓的过程。采用正交试验考察浸出温度、时间、液固比和酸度对镓浸出率的影响。结果表明，在最佳浸出条件下：8 mol/L盐酸、液固比4.0、109 ℃浸出5 h，镓浸出率达到95.4%。用50%TBP 50%煤油一次萃取，镓萃取率达到98%。用0.5%食盐水反萃，镓反萃率为96.8%。反萃液用0.5 mol/L NaOH溶液中和、过滤、烘干后，固体中镓的质量百分数为4.32%，从赤泥中富集了136倍。镓的总回收率达到85%以上。
Abstract:The hydrochloric acid leaching process of gallium from Bayer red mud was studied. The effects of leaching temperature, time, ratio of liquid to solid (L/S) and concentration of hydrochloric acid on the leaching rate of gallium were investigated with orthogonal test. The results show that the leaching rate of gallium is 95.4% under the optimum conditions including hydrochloric acid concentration of 8 mol/L, L/S=4.0, 5 hours leaching at 109 ℃. The extraction rate of gallium reaches 98% with 50% TBP＋50% kerosene, the stripping rate of gallium is 96.8% with 0.5% salt solution. The stripping solution is neutralized with 0.5mol/L NaOH solution and then filtrated and dried. The gallium mass percentage is 4.32% in solid and is enriched 136-fold from the red mud. The total gallium recovery is above 85%.
keywords: Bayer process red mud leaching liquid-solid rate recovery
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| Author Name | Affiliation | |
| Wang keqin | College of Materials Science and Engineering,Taiyuan University of Technology, | wk6591@126.com |
| Li shenghu | ||
| ZHU guohai | ||
| Song jiawei | ||
| Gao yan |
引用文本：
王克勤,李生虎,朱国海,宋嘉伟,高燕.盐酸浸出氧化铝赤泥回收镓[J].有色金属（冶炼部分）,2012(8):34-36.
Wang keqin,Li shenghu,ZHU guohai,Song jiawei,Gao yan.Gallium Recovery from Alumina Red Mud with Hydrochloric Acid Leaching[J].Nonferrous Metals (Extractive Metallurgy),2012(8):34-36.
王克勤,李生虎,朱国海,宋嘉伟,高燕.盐酸浸出氧化铝赤泥回收镓[J].有色金属（冶炼部分）,2012(8):34-36.
Wang keqin,Li shenghu,ZHU guohai,Song jiawei,Gao yan.Gallium Recovery from Alumina Red Mud with Hydrochloric Acid Leaching[J].Nonferrous Metals (Extractive Metallurgy),2012(8):34-36.
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