Hydrometallurgical purification of metallurgical grade silicon
来源期刊：Rare Metals2009年第3期
论文作者：MA Xiaodong, ZHANG Jian, WANG Tongmin, and LI Tingju State Key Laboratory of Materials Modification, School of Materials Science and Engineering, Dalian University of Technology, Dalian , China
文章页码：221 - 225
摘 要：The effects of the particle size of ground metallurgical grade silicon （MG-Si）, the sort of acids, and the type of stirring on the purified efficiency of MG-Si were investigated. It was found that a particle size less than 0.1 mm was most effective for acid leaching; the extraction yield of impurities was increased by 9% with HF leaching compared with HCl leaching and HNO3 leaching, and increased by 7% with ultrasonic stirring compared with mechanical stirring. The principle of hydrometallurgical purification of metallurgical grade silicon under ultrasonic fields was also discussed.
MA Xiaodong, ZHANG Jian, WANG Tongmin, and LI Tingju State Key Laboratory of Materials Modification, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
摘 要：The effects of the particle size of ground metallurgical grade silicon （MG-Si）, the sort of acids, and the type of stirring on the purified efficiency of MG-Si were investigated. It was found that a particle size less than 0.1 mm was most effective for acid leaching; the extraction yield of impurities was increased by 9% with HF leaching compared with HCl leaching and HNO3 leaching, and increased by 7% with ultrasonic stirring compared with mechanical stirring. The principle of hydrometallurgical purification of metallurgical grade silicon under ultrasonic fields was also discussed.
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