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The mechanism of boron removal in the CaO–SiO2–Al2O3 slag system for SoG-Si

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  • Jung, Eun Jin
  • Moon, Byung Moon
  • Seok, Seong Ho
  • Min, Dong Joon

Abstract

The dissolution behavior of boron in a molten slag was evaluated at 1773 K to establish the boron removal mechanism from silicon refining for preparing higher purity solar-grade silicon. From the experimental results, a mechanism of boron removal from silicon into the CaO–SiO2–Al2O3 slag system was confirmed to proceed via BO33− and B62− following a linear relationship with oxygen partial pressure in the slag system. In addition, the distribution ratio of boron was seen to increase with increasing slag basicity.

Suggested Citation

  • Jung, Eun Jin & Moon, Byung Moon & Seok, Seong Ho & Min, Dong Joon, 2014. "The mechanism of boron removal in the CaO–SiO2–Al2O3 slag system for SoG-Si," Energy, Elsevier, vol. 66(C), pages 35-40.
    • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:35-40
    DOI: 10.1016/j.energy.2013.08.010
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    References listed on IDEAS

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    2. Singh, G.K., 2013. "Solar power generation by PV (photovoltaic) technology: A review," Energy, Elsevier, vol. 53(C), pages 1-13.
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