| 碳高温还原解毒铬渣中CaCrO4的反应热力学研究 |
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| 引用本文： | 石玉敏,都兴红,隋智通.碳高温还原解毒铬渣中CaCrO4的反应热力学研究[J].环境污染与防治,2007,29(6):451-454. |
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| 作者姓名： | 石玉敏 都兴红 隋智通 |
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| 作者单位： | 1. 辽宁省环境科学研究院,辽宁,沈阳,110031
2. 东北大学材料与冶金学院,辽宁,沈阳,110002 |
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| 摘 要： | 通过热力学分析与计算,确立了采用高温固相还原法,利用冶金废渣M作为还原剂,高温解毒铬渣中CaCrO4的还原反应.对比分析了C、CO对酸溶性CaCrO4与水溶性NazCrO4还原反应的吉布斯自由能和平衡常数变化,探讨了温度、压力对铬渣中CaCrO4还原反应的影响,升高温度、减小体系压力对CaCrO4的高温还原有利.
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| 关 键 词： | CaCrO4 C 还原解毒 热力学 |
Thermodynamics study of detoxified reduction of CaCrO4 in chromium slag by carbon |
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| Shi Yumin,Du Xinghong,Sui Zhitong.Thermodynamics study of detoxified reduction of CaCrO4 in chromium slag by carbon[J].Environmental Pollution & Control,2007,29(6):451-454. |
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| Authors: | Shi Yumin Du Xinghong Sui Zhitong |
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| Institution: | 1. Liaoning Academy of Environmental Sciences, Shenyang Liaoning 110031 ; 2. School of Materials and Metallurgy, Northeastern University, Shenyang Liaoning 110002 |
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| Abstract: | The detoxified reaction of CaCrO4 in containing-chromium slag was performed with high-temperature reduction method using meatallurgy slag-M as reductant.The reduction kinetics of cabon and carbon monoxide with acidic soluble CaCrO4 and water soluble Na2CrO4 respectively were studied.The influence of temperature and pressure on the reductions was also checked.It was found that raising temperature and/or decreasing pressure could favor the detoxification reduction of CaCrO4. |
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| Keywords: | CaCrO_4 Carbon Reduction and detoxification Thermodynamics |
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