| 铜精矿样品的氧化条件及其机理探讨 |
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| 引用本文： | 陈少鸿,陈建国,应晓浒,王谦.铜精矿样品的氧化条件及其机理探讨[J].岩矿测试,2005,24(1):47-50. |
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| 作者姓名： | 陈少鸿 陈建国 应晓浒 王谦 |
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| 作者单位： | 宁波出入境检验检疫局,浙江,宁波,315012 |
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| 摘 要： | 考察了不同贮存和制备条件对铜精矿样品铜含量的影响,得出在包装密封不良时铜含量因氧化而产生的变化结果及其趋势;根据X射线衍射所作的矿相分析结果,利用X射线荧光光谱仪观察样品中铜、铁、硫化学态的变化,探讨了铜精矿氧化反应的机理。样品变质主要是低价硫、铜、铁离子与空气中的水和氧发生氧化反应所致,酸度增高会促使氧化反应加速进行。
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| 关 键 词： | 铜 铜精矿 黄铜矿 黄铁矿 氧化反应 |
| 文章编号： | 0254-5357(2005)01-0047-04 |
Study on Oxidation Mechanism and Conditions of Copper Concentrates |
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| CHEN Shao-hong,CHEN Jian-guo,YING Xiao-hu,Wang Qian.Study on Oxidation Mechanism and Conditions of Copper Concentrates[J].Rock and Mineral Analysis,2005,24(1):47-50. |
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| Authors: | CHEN Shao-hong CHEN Jian-guo YING Xiao-hu Wang Qian |
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| Abstract: | The effects of various conditions of storage and sample preparation on the content of copper in copper concentrates has been investigated. It was found that the changes in copper content in samples under bad sealed packing condition resulted from oxidation. The mineral phases of the samples were analyzed by X-ray diffraction, and the valence changes of S, Cu and Fe were determined by X-ray fluorescence spectrometer. The oxidation mechanism of copper concentrates was probed. The deterioration of samples is chiefly due to oxidation reaction of low valent S, Cu and Fe with H_2O and O_2 in air. The increase of acidity can accelerate the oxidation of samples . |
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| Keywords: | copper copper concentrates chalcopyrite pyrite oxidation |
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