The mechanism of boron removal in the CaO–SiO2–Al2O3 slag system for SoG-Si
Eun Jin Jung,
Byung Moon Moon,
Seong Ho Seok and
Dong Joon Min
Energy, 2014, vol. 66, issue C, 35-40
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.
Keywords: Boron; Slag refining; SoG-Si; Oxygen partial pressure; Capacity; Optical basicity (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:66:y:2014:i:c:p:35-40
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