| 氟碳铈矿盐酸浸出过程的动力学 |
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| 引用本文： | 边雪,尹少华,罗瑶,吴文远. 氟碳铈矿盐酸浸出过程的动力学[J]. 中国有色金属学会会刊, 2011, 0(10): 2306-2310 |
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| 作者姓名： | 边雪 尹少华 罗瑶 吴文远 |
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| 作者单位： | 东北大学材料与冶金学院; |
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| 基金项目： | Project(50974042)supported by the National Natural Science Foundation of China; Project(20090042120015)supported by Scientific Research Special Foundation of Doctor Subject of Chinese Universities; Project(N090302007)supported by the Fundamental Research Funds for the Central Universities,China |
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| 摘 要： | 考察盐酸浓度、浸出温度、液固比和矿物粒度对浸出速度的影响.结果表明:在盐酸浓度6 mol/L、浸出温度90C、液固比15:1、矿物粒度25 μm的条件下浸出90 min后,氟碳铈矿中稀土碳酸盐的浸出率达到89.6％,而稀土氟化物的浸出率仪为1.5％.氟碳铈矿浸出过程符合产物层扩散模型,稀土碳酸盐和氟化物浸出过程的表观活...
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| 关 键 词： | 氟碳铈矿 稀土碳酸盐 稀土氟化物 浸出动力学 |
Leaching kinetics of bastnaesite concentrate in HCl solution |
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| BIAN Xue,YIN Shao-hua,LUO Yao,WU Wen-yuan School of Materials , Metallurgy,Northeastern University,Shenyang ,China. Leaching kinetics of bastnaesite concentrate in HCl solution[J]. Transactions of Nonferrous Metals Society of China, 2011, 0(10): 2306-2310 |
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| Authors: | BIAN Xue YIN Shao-hua LUO Yao WU Wen-yuan School of Materials Metallurgy Northeastern University Shenyang China |
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| Affiliation: | BIAN Xue,YIN Shao-hua,LUO Yao,WU Wen-yuan School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China |
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| Abstract: | The leaching kinetics of bastnaesite concentrate in HCl solution was investigated with respect to the effects of HCl concentration by changing HCl concentration,leaching temperature,liquid to solid ratio,and particle size.A particle size of 25 μm was required to leach 89.6% RE2（CO3）3 and 1.5%REF3 at 90 ℃ for 90 min,when HCl concentration was 6 mol/L and liquid to solid ratio was 15：1.The leaching kinetics of bastnaesite concentrate is represented by shrinking core model with diffusion through a porous product layer.The activation energies for the dissolution reaction of RE2（CO3）3 and REF3 were calculated to be 59.39 kJ/mol and 66.13 kJ/mol respectively. |
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| Keywords: | bastnaesite RE2(CO3)3 REF3 leaching kinetics |
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