| Mechanism of influence of ferric ion on electrogenerative leaching of sulfide minerals with FeCl3 |
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| 引用本文： | 王少芬 方正. Mechanism of influence of ferric ion on electrogenerative leaching of sulfide minerals with FeCl3[J]. 中国有色金属学会会刊, 2006, 16(2): 473-476. DOI: 10.1016/S1003-6326(06)60081-2 |
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| 作者姓名： | 王少芬 方正 |
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| 作者单位： | Department of Chemistry and Environmental Engineering Changsha University of Science and Technology Changsha 410077 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China，School of Chemistry and Chemical Engineering Central South University Changsha 410083 China |
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| 摘 要： | 1 Introduction Electrogenerative leaching process is a newly- developed technique in hydrometallurgy. Although its principle has developed since the late 1960s[1], this technique has been overlooked in metallurgy until ZHANG et al[2] introduced it to the …
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| 关 键 词： | 高铁离子 硫化矿 浸出 选矿 FeCl3 |
| 收稿时间： | 2005-09-27 |
| 修稿时间： | 2006-01-13 |
Mechanism of influence of ferric ion on electrogenerative leaching of sulfide minerals with FeCl3 |
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| WANG Shao-fen,FANG Zheng. Mechanism of influence of ferric ion on electrogenerative leaching of sulfide minerals with FeCl3[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(2): 473-476. DOI: 10.1016/S1003-6326(06)60081-2 |
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| Authors: | WANG Shao-fen FANG Zheng |
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| Affiliation: | 1. National Key Laboratory of Biochemical Engineering, CAS and Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. China University of Mining and Technology (Beijing), Beijing 100083, China;1. National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Kunming 650093, China;2. Key Laboratory of Advanced Battery Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China;3. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;4. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | A dual cell system was used to study the influence of ferric ion on the electrogenerative leaching of sulfide minerals. Reaction mechanisms for the ferric chloride electrogenerative leaching of a series of sulfide minerals were proposed based on the data collected from the dual cell experiments. The influences of ferric ion on the electrogenerative leaching of sulfide minerals are similar. Ferric ion plays an important role on limiting the electrogenerative leaching rate at a relatively low concentration of FeCl3 (about less than 0.15 mol/L). The mathematical models based on the Butler-Volmer relation were delineated, and kinetic equations with respect to ferric ions for each sulfide mineral were obtained. The kinetic equations show that when the concentration of ferric ion is relatively low, the electrogenerative leaching rates are predicted to be proportional to 6/7, 4/5, 2/3 and 2/3 order of ferric ion for nickel concentrate, chalcopyrite concentrate, sphalerite and galena respectively. As the concentration of ferric ion increase, the correlative dependence between electrogenerative leaching rate and concentration of ferric ion becomes weak. The above conclusions are in agreement with the experimental results. |
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| Keywords: | ferric ion sulfide minerals electrogenerative leaching leaching rate mechanism |
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