| 铝土矿浮选尾矿盐酸浸出除铁工艺研究 |
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| 引用本文： | 王耀武,孙挺,冯乃祥,尤晶,彭建平,秦剑.铝土矿浮选尾矿盐酸浸出除铁工艺研究[J].矿冶工程,2009,29(6):71-74. |
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| 作者姓名： | 王耀武 孙挺 冯乃祥 尤晶 彭建平 秦剑 |
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| 作者单位： | 1. 东北大学 材料与冶金学院, 辽宁 沈阳 110004;
2. 中国铝业 河南分公司, 河南 郑州 450041 |
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| 基金项目： | 国家高技术研究发展计划(863计划)支持项目 |
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| 摘 要： | 铝土矿浮选尾矿含铁量较高, 不能直接作为电热法生产一次铝硅合金的原料。采用盐酸对铝土矿浮选尾矿进行了除铁。考察了浸出时间、浸出温度、浸出液固比及盐酸浓度对尾矿氧化铁和氧化铝浸出率的影响。实验结果表明, 在浸出温度80 ℃、浸出时间120 min、浸出液固比5∶1、盐酸浓度21%的条件下, 尾矿的除铁率可达95%以上, 氧化铝的损失率在4.3%以下。
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| 关 键 词： | 铝土矿 浮选尾矿 盐酸浸出 除铁 |
| 收稿时间： | 2009-07-19 |
Study on Leaching and Iron Removal Process of Flotation Tailings from Bauxite in Hydrochloric Acid Solutions |
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| WANG Yao-wu,SUN Ting,FENG Nai-xiang,YOU Jing,PENG Jian-ping,QIN Jian.Study on Leaching and Iron Removal Process of Flotation Tailings from Bauxite in Hydrochloric Acid Solutions[J].Mining and Metallurgical Engineering,2009,29(6):71-74. |
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| Authors: | WANG Yao-wu SUN Ting FENG Nai-xiang YOU Jing PENG Jian-ping QIN Jian |
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| Affiliation: | 1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China;
2. Henan Subsidiary, Aluminium Corporation of China, Zhengzhou 450041,Henan,China |
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| Abstract: | Iron content in flotation tailings of bauxite is high, so the tailings cannot be directly used as raw materials for producing primary Al-Si alloy. Test of the removal of iron from the tailings were conducted by hydrochloric acid leaching method. The effect of leaching time, leaching temperature, leaching liquid-solid ratio and hydrochloric acid concentration on the leaching rate of Fe_2O_3 and Al_2O_3 was researched. Results show that the leaching rate of Fe_2O_3 can reach more than 95% and the loss rate of Al_2O_3 is less than 4.3% under the conditions of 120 min leaching time, 80 ℃ leaching temperature,5:1 leaching liquid-solid ratio and 21% hydrochloric acid concentration. |
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| Keywords: | bauxite flotation tailings hydrochloric acid leaching iron removal |
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