| 黄铁矿的氧化与浮选机理 |
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| 引用本文： | 丁敦煌,龙翔云,王淀佐. 黄铁矿的氧化与浮选机理[J]. 有色金属, 1993, 0(4) |
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| 作者姓名： | 丁敦煌 龙翔云 王淀佐 |
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| 作者单位： | [1]中南工业大学 [2]长沙 |
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| 摘 要： | 用量子化学CNDO/2方法研究了黄铁矿表面的电子结构和化学键性质,讨论了黄铁矿表面原子、氧和黄药的相互作用,阐明了黄铁矿表面的共价键特征和接收电子的能力,认为清洁的黄铁矿表面可以与黄药作用生成黄原酸盐,而在有氧吸附的表面上是难以生成黄原酸盐。但吸附的氧可以使黄药氧化生成双黄药,成为反应的活性中心。黄铁矿表面则对该反应起着电催化作用。
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| 关 键 词： | 黄铁矿 氧化 浮选机理 量子化学 |
MECHANISM OF PYRITE OXIDATION AND FLOTATION |
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| Ding Dunghuang Long Xiangyun Wang Dianzuo. MECHANISM OF PYRITE OXIDATION AND FLOTATION[J]. Nonferrous Metals, 1993, 0(4) |
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| Authors: | Ding Dunghuang Long Xiangyun Wang Dianzuo |
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| Abstract: | The electron distribution and the resulting chemical bonding on pyrite surface and the interaction between oxygen, xanthate and pyrite surface were studied and calculated separately by CNDO/2 method of quantum chem istry. From the obtained results the covalent bonding character on pyrite surface and the capability accepting electron onto the surface have been dem onstrated.It seems that ferrous xanthate may be formed when the oxygen absent pyrite surface interacts with xanthate. It is explained that xantho gen is formed on the oxidized pyrite surface. In this occasion, the adsorbed oxygen can be regarded as the active position to produce xanthogen while pyrite surface acts an electro-catalyst. |
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| Keywords: | pyrite oxidation flotation quantum chemistry |
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