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煤矸石中的铝、铁在高浓度盐酸中的浸出行为

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杨喜, 崔慧霞, 郭彦霞, 薛芳斌, 程芳琴. 煤矸石中的铝、铁在高浓度盐酸中的浸出行为[J]. 环境工程学报, 2014, 8(8): 3403-3408.
引用本文: 杨喜, 崔慧霞, 郭彦霞, 薛芳斌, 程芳琴. 煤矸石中的铝、铁在高浓度盐酸中的浸出行为[J]. 环境工程学报, 2014, 8(8): 3403-3408.
shu
Yang Xi, Cui Huixia, Guo Yanxia, Xue Fangbin, Cheng Fangqin. Leaching behavior of alumina and ferric oxide in concentrated hydrochloric acid from coal gangue[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3403-3408.
Citation: Yang Xi, Cui Huixia, Guo Yanxia, Xue Fangbin, Cheng Fangqin. Leaching behavior of alumina and ferric oxide in concentrated hydrochloric acid from coal gangue[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3403-3408.
shu

煤矸石中的铝、铁在高浓度盐酸中的浸出行为

  • 1.

    山西大学资源与环境工程研究所, 国家环境保护煤炭废弃物资源化利用技术重点实验室, 太原 030006

  • 基金项目:

    国家“863”高技术研究发展计划项目（2011AA06A103）

  • 中图分类号: X752

Leaching behavior of alumina and ferric oxide in concentrated hydrochloric acid from coal gangue

  • 1.

    State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Institute of Resources and Environmental Engineering, Shanxi University, Taiyuan 030006, China

  • Fund Project:

  • 摘要: 考察了煤矸石中Al2O3和Fe2O3在不同浓度盐酸中的浸出行为，着重探讨了Al2O3和Fe2O3在高浓度盐酸中的溶出规律。通过与文献中AlCl3和FeCl3在不同浓度盐酸中的溶解度数据对照，发现煤矸石中Al2O3的溶出率受AlCl3溶解度的影响显著，而Fe2O3的溶出则基本不受FeCl3溶解度影响。进一步的研究结果表明，在高浓度盐酸中，煤矸石中Al2O3的溶出率显著降低，高浓度的盐酸不影响Fe2O3的溶出。当煤矸石的煅烧温度为700℃、酸浸温度为33℃时，酸浸固液比为1：1（g/mL），利用37%的高浓度盐酸酸浸，Fe2O3和Al2O3的溶出率分别为48.7%和7.3%，可实现煤矸石中铁铝的有效分离。
    Abstract: The leaching behavior of Al2O3 and Fe2O3 in the concentrated hydrochloric acid from coal gangue was investigated. By comparison with the solubility of AlCl3 and FeCl3 in literatures, it is found that the dissolution of Al2O3 from coal gangue was seriously affected by the solubility of AlCl3 while that of Fe2O3 not by the solubility of FeCl3. The further study showed that the dissolution of Al2O3 in concentrated HCl decreased significantly, while the dissolution of Fe2O3, was little affected by the concentration of HCl. Therefore, the concentrated HCl was used to leach Fe2O3. The results showed that the dissolution of Fe2O3 could reach about 48.7% only with 7.3% loss of Al2O3 at the calcination activation temperature of 700℃, the leaching temperature of 33℃ and a solid to liquid ratio of 1:1 for coal gangue.
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出版历程
  • 收稿日期:  2013-08-26
  • 刊出日期:  2014-07-31
杨喜, 崔慧霞, 郭彦霞, 薛芳斌, 程芳琴. 煤矸石中的铝、铁在高浓度盐酸中的浸出行为[J]. 环境工程学报, 2014, 8(8): 3403-3408.
引用本文: 杨喜, 崔慧霞, 郭彦霞, 薛芳斌, 程芳琴. 煤矸石中的铝、铁在高浓度盐酸中的浸出行为[J]. 环境工程学报, 2014, 8(8): 3403-3408.
shu
Yang Xi, Cui Huixia, Guo Yanxia, Xue Fangbin, Cheng Fangqin. Leaching behavior of alumina and ferric oxide in concentrated hydrochloric acid from coal gangue[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3403-3408.
Citation: Yang Xi, Cui Huixia, Guo Yanxia, Xue Fangbin, Cheng Fangqin. Leaching behavior of alumina and ferric oxide in concentrated hydrochloric acid from coal gangue[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3403-3408.
shu

煤矸石中的铝、铁在高浓度盐酸中的浸出行为

  • 1. 山西大学资源与环境工程研究所, 国家环境保护煤炭废弃物资源化利用技术重点实验室, 太原 030006
  • 收稿日期:  2013-08-26
基金项目:

国家“863”高技术研究发展计划项目（2011AA06A103）

摘要: 考察了煤矸石中Al2O3和Fe2O3在不同浓度盐酸中的浸出行为，着重探讨了Al2O3和Fe2O3在高浓度盐酸中的溶出规律。通过与文献中AlCl3和FeCl3在不同浓度盐酸中的溶解度数据对照，发现煤矸石中Al2O3的溶出率受AlCl3溶解度的影响显著，而Fe2O3的溶出则基本不受FeCl3溶解度影响。进一步的研究结果表明，在高浓度盐酸中，煤矸石中Al2O3的溶出率显著降低，高浓度的盐酸不影响Fe2O3的溶出。当煤矸石的煅烧温度为700℃、酸浸温度为33℃时，酸浸固液比为1：1（g/mL），利用37%的高浓度盐酸酸浸，Fe2O3和Al2O3的溶出率分别为48.7%和7.3%，可实现煤矸石中铁铝的有效分离。

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