Rare Metals

, Volume 28, Issue 3, pp 221–225 | Cite as

Hydrometallurgical purification of metallurgical grade silicon

  • Xiaodong Ma
  • Jian Zhang
  • Tongmin Wang
  • Tingju LiEmail author


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.


metallurgical grade silicon ultrasonic field acid leaching metallic impurities 


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Copyright information

© Journal Publishing Center of University of Science and Technology Beijing and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Xiaodong Ma
    • 1
  • Jian Zhang
    • 1
  • Tongmin Wang
    • 1
  • Tingju Li
    • 1
    Email author
  1. 1.State Key Laboratory of Materials Modification, School of Materials Science and EngineeringDalian University of TechnologyDalianChina

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