Advertisement

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
Article

Abstract

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.

Keywords

metallurgical grade silicon ultrasonic field acid leaching metallic impurities 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Alvin D.C., Photovoltaics: clean power for the 21st century, Sol. Energy Mater. Sol. Cells, 2006, 90(15): 2170.CrossRefGoogle Scholar
  2. [2]
    Goetzberger A. and Hebling C., Photovoltaic materials, past, present, future, Sol. Energy Mater. Sol. Cells, 2000, 62(1–2):1.CrossRefGoogle Scholar
  3. [3]
    Sarti D. and Einhaus R., Silicon feedstock for the multi-crystalline photovoltaic industry, Sol. Energy Mater. Sol. Cells, 2002, 72(1–4): 27.CrossRefGoogle Scholar
  4. [4]
    Swanson R.M., A vision for crystalline silicon photovoltaics, Prog. Photovolt. Res. Appl., 2006, 14(5): 443.CrossRefGoogle Scholar
  5. [5]
    Feng R.H., Ma T.C., Jiang S., and Huang K., Preparation technologies of solar grade multicrystalline silicon, Adv. Mater. Ind. (in Chinese), 2007 (5): 59.Google Scholar
  6. [6]
    Yang D., Status and development of multicrystalline silicon used for solar cells, Sol. Renewable Energy Sources (in Chinese), 2007 (1): 36.Google Scholar
  7. [7]
    Ma W.H., Dai Y.N., Yang B., Liu D.C., and Wang H., Research progress for novel preparation techniques of solar grade silicon, Adv. Mater. Ind. (in Chinese), 2006 (10): 12.Google Scholar
  8. [8]
    Yu Z.L., Ma W.H., Dai Y.N., Yang B., and Kui K.X., Research progress for novel techniques of solar grade silicon, Light Met. (in Chinese), 2006 (3): 43.Google Scholar
  9. [9]
    Hunt L.P., Dosaj V.D., McCormick J.R., and Crossman L.D, Purification of metallurgical-grade silicon to solar-grade quality, [in] International Symposium on Solar Energy, Washington, D.C., 1976: 200.Google Scholar
  10. [10]
    Chu T.L. and Chu S.S., Partial purification of metallurgical silicon by acid extraction, J. Electrochem. Soc. 1983, 130(2):455.CrossRefGoogle Scholar
  11. [11]
    Dietl J., Hydrometallurgical purification of metallurgical-grade silicon, Sol. Cells, 1983, 10(2): 145.CrossRefGoogle Scholar
  12. [12]
    Norman C.E., Absi E. M., and Thomas, R.E., Solar-grade silicon substrates by a powder-to-ribbon process, Can. J. Phys., 1985, 63: 859.ADSGoogle Scholar
  13. [13]
    Wang Y., Yin S., Xiao C.Z., He X.M., and Wang J., Theoretical analysis and technology optimization for hydrometallurgical purification of Si material, Acta Energiae Sol. Sin. (in Chinese), 1995, 16(2): 174.Google Scholar
  14. [14]
    Yin S. and He X.M., Solar grade silicon material prepared by combining cold plasma with hydrometallurgy, J. Funct. Mater. (in Chinese), 2002, 33(3): 305.Google Scholar
  15. [15]
    Sakata T., Miki T., and Morita K., Removal of iron and titanium in poly-crystalline silicon by acid leaching, J. Jpn. Inst. Met. (in Japanese), 2002, 66(5): 459.Google Scholar
  16. [16]
    Juneja J.M. and Mukherjee T.K., A study of the purification of metallurgical grade silicon, Hydrometallurgy, 1986, 16(1):69.CrossRefGoogle Scholar
  17. [17]
    Santos I.C., Goncalves A.P., Santos C.S., and Almeida M., Afonso M.H., and Cruz M.J., Purification of metallurgical grade silicon by acid leaching, Hydrometallurgy, 1990, 23(2–3): 237.CrossRefGoogle Scholar
  18. [18]
    Yu Z.L., Ma W.H., Dai Y.N., Yang B., Liu D.C., Dai W.P., and Wang J.X., Removal of iron and aluminum impurities from metallurgical grade-silicon with hydrometallurgical route, Trans. Nonferrous. Met. Soc. China, 2007, 17: s1030.Google Scholar

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

Personalised recommendations