| 熔盐电解精炼提纯金属硅(英文) |
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| 引用本文： | 蔡靖,罗学涛,卢成浩,Geir Martin HAARBERG,Annabelle LAURENT,Ole Edvard KONGSTEIN,王淑兰.熔盐电解精炼提纯金属硅(英文)[J].中国有色金属学会会刊,2012,22(12):3103-3107. |
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| 作者姓名： | 蔡靖 罗学涛 卢成浩 Geir Martin HAARBERG Annabelle LAURENT Ole Edvard KONGSTEIN 王淑兰 |
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| 作者单位： | 厦门大学材料科学与工程系;Department of Materials Technology, Norwegian University of Science and Technology;SINTEF, Trondheim NO-7465, Norway;东北大学化学系 |
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| 基金项目： | Project (2007J0012) supported by the Natural Science Foundation of Fujian Province, China;Project (019811) supported by Foxy in the 6th Framework Program, European Commission |
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| 摘 要： | 对熔盐电解质中硅的沉积过程进行电化学研究。在 973~223K,在硅氯化物熔盐中采用电解精炼提纯金属硅。结果表明,液态硅铜合金阳极有利于 CaCl2-NaCl-CaO-Si 熔盐体系的电解精炼。ICP-AES 分析结果显示,通过电解精炼可有效去除原料中大量的钛、铝、铁等金属杂质,硅中的硼和磷含量分别由 36×106和 25×106降低至 4.6×10 6和 2.8×10 6,电解能耗约为 9.3 kW·h/kg。
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| 关 键 词： | 电解精炼 熔盐 硅铜合金 硅 提纯 能耗 |
| 收稿时间： | 8 October 2011 |
Purification of metallurgical grade silicon by electrorefining in molten salts |
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| CAI Jing,LUO Xue-tao,LU Cheng-hao,Geir Martin HAARBERG,Annabelle LAURENT,Ole Edvard KONGSTEIN,WANG Shu-lan.Purification of metallurgical grade silicon by electrorefining in molten salts[J].Transactions of Nonferrous Metals Society of China,2012,22(12):3103-3107. |
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| Authors: | CAI Jing LUO Xue-tao LU Cheng-hao Geir Martin HAARBERG Annabelle LAURENT Ole Edvard KONGSTEIN WANG Shu-lan |
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| Affiliation: | 1. Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China; 2. Department of Materials Technology, Norwegian University of Science and Technology, Trondheim NO-7491, Norway; 3. SINTEF, Trondheim NO-7465, Norway; 4. Department of Chemistry, Northeastern University, Shenyang 110004, China |
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| Abstract: | Electrochemical studies on silicon deposition were performed in molten salt electrolytes. Purification of metallurgical grade silicon by electrorefining was carried out in molten Si–chloride salts at temperatures from 973 K to 1223 K. It was found that the use of a liquid alloy anode of silicon and copper was beneficial in molten CaCl2 with NaCl, CaO and dissolved Si. ICP-AES analysis results showed efficient removal of metal impurities, such as titanium, aluminum and iron, which are present in significant quantities in the feedstock. The contents of boron and phosphorus in the silicon after electrorefining were reduced from 36×10?6 and 25×10?6 to 4.6×10?6 and 2.8 ×10?6, respectively. The energy consumption of electrorefining was estimated to be about 9.3 kW·h/kg. |
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| Keywords: | electrorefining molten salt Si-Cu alloy silicon purification energy consumption |
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