| 高镁磷尾矿在磷酸中的溶解动力学 |
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| 引用本文： | 谭志斗,谷晋川,吴焕理,张允湘. 高镁磷尾矿在磷酸中的溶解动力学[J]. 化工矿物与加工, 2007, 36(4): 1-3 |
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| 作者姓名： | 谭志斗 谷晋川 吴焕理 张允湘 |
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| 作者单位： | 西华大学能源与环境学院,四川,成都,610039;湖北民族学院化学与环境工程学院,湖北,恩施,445000;西华大学能源与环境学院,四川,成都,610039;湖北民族学院化学与环境工程学院,湖北,恩施,445000;四川大学化工学院,四川,成都,610065 |
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| 摘 要： | 对高镁磷尾矿在磷酸中的溶解动力学进行了研究,考查了磷酸中P2O5质量分数及反应温度对酸解过程的影响.选用考虑了自阻化因素的德罗兹多夫方程1/tln100/100-α-βα%/t=k来描述该过程的酸解动力学.研究结果表明:反应速率常数随温度的升高和磷酸中P2O5质量分数的增加而增加.该反应属于扩散控制,反应活化能约为29.2kJ/mol.
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| 关 键 词： | 高镁磷尾矿 磷酸 溶解动力学 |
| 文章编号： | 1008-7524(2007)04-0001-03 |
| 修稿时间： | 2006-11-29 |
Dissolution kinetics of phosphate tailings with high magnesium content in phosphoric acid |
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| TAN Zhi-dou,GU Jing-chuan,WU Huang-li,ZHANG Yun-xiang. Dissolution kinetics of phosphate tailings with high magnesium content in phosphoric acid[J]. Industrial Minerals and Processing, 2007, 36(4): 1-3 |
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| Authors: | TAN Zhi-dou GU Jing-chuan WU Huang-li ZHANG Yun-xiang |
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| Affiliation: | 1. Xihua University, Chengdu Siehuan 610039, China; 2. Hubei Institute for Nationalities, Enshi Hubei 445000, China; 3. Sichuan University, Chengdu Sichuan 610065, China |
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| Abstract: | The dissolution kinetics of phosphate tailings with high magnesium content in phosphoric acid was studied.The influences of P2O5 concentration in phosphoric acid and reaction temperature on acid digestion process were discussed.The Drozdov equation that took into account the self-impeding effect was selected to simulate the dissolution kinetics.The results showed that the decomposition rate increased as P2O5 concentration in phosphoric acid increased and the temperature moved up.The reaction was a diffusion control process.Its apparent activation energy was 29.2kJ/mol. |
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| Keywords: | phosphate tailings with high magnesium content phosphoric acid dissolution kinetics |
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