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Journal of Materials Science

, Volume 20, Issue 12, pp 4387–4391 | Cite as

Production and purification of silicon by calcium reduction of rice-husk white ash

  • P. Mishra
  • A. Chakraverty
  • H. D. Banerjee
Papers

Abstract

Polycrystalline silicon of reasonable purity has been prepared by metallothermic reduction of purified rice-husk white ash (amorphous silica) by using calcium. The mechanism of reduction of the silica with calcium was investigated using simultaneous thermogravimetric analysis and differential thermal analysis, which revealed the reduction temperature to be around 720‡ C. The paper also discusses the method of preparation of silicon and its purification procedure. Characterization of the silicon sample thus prepared was made by X-ray diffraction, scanning electron microscopy and emission spectrography.

Keywords

Polymer Calcium Silicon Electron Microscopy Scanning Electron Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1985

Authors and Affiliations

  • P. Mishra
    • 1
  • A. Chakraverty
    • 1
  • H. D. Banerjee
    • 2
  1. 1.Post Harvest Technology CentreIndian Institute of TechnologyKharagpurIndia
  2. 2.Material Science CentreIndian Institute of TechnologyKharagpurIndia

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