| 二氧化锰对黄铜矿浸出行为的影响 |
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| 引用本文： | 白云龙,谢锋,王伟,蒋开喜.二氧化锰对黄铜矿浸出行为的影响[J].有色金属(冶炼部分),2019(11):1-6. |
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| 作者姓名： | 白云龙 谢锋 王伟 蒋开喜 |
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| 作者单位： | ;1.东北大学冶金学院;2.北京矿冶科技集团有限公司 |
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| 基金项目： | 国家自然科学基金资助项目（51574072，51434001） |
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| 摘 要： | 黄铜矿常压浸出存在浸出缓慢等问题。当溶液中存在MnO_2时,由于矿物接触间的原电池效应为黄铜矿的氧化提供更多途径,从而为提高黄铜矿浸出率带来可能。分别研究了在H_2SO_4溶液和H_2SO_4-Fe_2(SO_4)_3溶液中,MnO_2对黄铜矿浸出行为的影响。结果表明,添加MnO_2能够促进黄铜矿的浸出,在浸出过程中,MnO_2迅速分解。黄铜矿在浸出过程中会形成一种缺金属钝化层,这种钝化层附着在黄铜矿表面,阻碍溶液与黄铜矿的接触,阻碍了黄铜矿的浸出。
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| 关 键 词： | 湿法冶金 黄铜矿 二氧化锰 促进作用 |
| 收稿时间： | 2019/7/4 0:00:00 |
| 修稿时间： | 2019/7/5 0:00:00 |
Effect of Manganese Dioxide on Leaching Behavior of Chalcopyrite |
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| BAI Yun-long,XIE Feng,WANG Wei and JIANG Kai-xi.Effect of Manganese Dioxide on Leaching Behavior of Chalcopyrite[J].Nonferrous Metals(Extractive Metallurgy),2019(11):1-6. |
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| Authors: | BAI Yun-long XIE Feng WANG Wei and JIANG Kai-xi |
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| Affiliation: | Northeastern University,Shenyang,,, |
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| Abstract: | A common problem of slow leaching rate exists in atmospheric pressure leaching of chalcopyrite. When MnO2 exists in solution, galvanic interaction between minerals provides a way for oxidation of chalcopyrite, which makes it possible to improve leaching rate of chalcopyrite. Effect of MnO2 on oxidative leaching of chalcopyrite in H2SO4 solution and H2SO4-Fe2(SO4)3 solution was studied respectively. The results show that leaching of chalcopyrite is promoted in presence of MnO2, and MnO2 decomposes rapidly. A metal-deficient passivate layer is formed and wrapped on chalcopyrite surface, which hinder leaching of chalcopyrite. |
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| Keywords: | hydrometallurgy chalcopyrite manganese dioxide promotion |
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