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The distribution of boron between CaO–SiO 2 slag phase and silicon phase was examined in order to establish the effects of slag composition and basicity on boron removal from metallurgical grade silicon (MG-Si). Though the addition of Li 2 O to CaO–SiO 2 slag showed a little obvious advantage to boron removal, the boron concentration in MG-Si can be reduced from 18ppmw to 1...
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