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论文类型：期刊论文

发表时间：2009-06-01

发表刊物：RARE METALS

收录刊物：SCIE、EI

卷号：28

期号：3

页面范围：221-225

ISSN号：1001-0521

关键字：metallurgical grade silicon; ultrasonic field; acid leaching; metallic impurities

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 HNO(3) 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.