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Study on Producing Solar Grade Silicon by Carbothermal Reduction of Andalusite Ore

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Energy Technology 2017

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

A big andalusite ore bed was found in Dingxi District, Gansu, China. In this paper, the feasibility of producing solar grade silicon from aluminum-silicon alloys by carbothermal reduction of andalusite ore was studied. First, the carbothermal reduction experiments were conducted in a 100 kVA DC submerged arc furnace with reducing temperature 2000–2200 °C and reducing time 4 h, the hypereutectic aluminum-silicon alloys containing 50–55 mass% aluminum and 35–45 mass% silicon were obtained; then the investigation on solidification of the hypereutectic Al-Si melts under the temperature gradient as an intensified separation silicon way was carried out. According to previous investigation, the optimized technical process for solar grade silicon and eutectic Al-Si alloy from andalusite ore was proposed.

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References

  1. Kazuki Morita, Takeshi Yoshikawa, Thermodynamic evaluation of new metallurgical refining processes for SOG-silicon production. Trans. Nonferrous Met. Soc. China 21, 685–690 (2011)

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Author information

Authors and Affiliations

  1. School of Materials Science and Engineering, Beihang University, 37 Xueyuan Road, Beijing, 100191, China

    Shilai Yuan, Huimin Lu & Panpan Wang

Authors
  1. Shilai Yuan
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  2. Huimin Lu
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  3. Panpan Wang
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Corresponding author

Correspondence to Huimin Lu .

Editor information

Editors and Affiliations

  1. University of Alaska System , Fairbanks, Alaska, USA

    Lei Zhang

  2. 512 Minerals & Matls Engg Bldg, Michigan Technological Univ 512 Minerals & Matls Engg Bldg, Houghton, Michigan, USA

    Jaroslaw W. Drelich

  3. IND LLC , South Jordan, Utah, USA

    Neale R. Neelameggham

  4. Idaho National Laboratory , Idaho Falls, Idaho, USA

    Donna Post Guillen

  5. CSIRO , Canberra, Australia

    Nawshad Haque

  6. Carnegie Mellon University , Pittsburgh, USA

    Jingxi Zhu

  7. Queensland University of Technology , Brisbane, Australia

    Ziqi Sun

  8. Nucor Steel , Manila, Arkansas, USA

    Tao Wang

  9. Purdue University , West Lafayette, Indiana, USA

    John A Howarter

  10. Turku, Finland

    Fiseha Tesfaye

  11. Department of Basic Sciences/Physic, Al Isra University Department of Basic Sciences/Physic, Amman, Jordan

    Shadia Ikhmayies

  12. Massachusetts Institute of Technology , Cambridge, Massachusetts, USA

    Elsa Olivetti

  13. Proval Partners SA , Lausanne, Switzerland

    Mark William Kennedy

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© 2017 The Minerals, Metals & Materials Society

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Yuan, S., Lu, H., Wang, P. (2017). Study on Producing Solar Grade Silicon by Carbothermal Reduction of Andalusite Ore. In: Zhang, L., et al. Energy Technology 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-52192-3_32

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