Boron Removal from MG-Si by Slag Treatment with Copper Addition

Rong Yi Chen; Xiao Bing Yang; Rui Zhi Chen; Shi Qiu; Chuan Hai Gan; Xue Zeng; Jin Tang Li; Xue Tao Luo

doi:10.4028/www.scientific.net/AMR.968.31

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Boron Removal from MG-Si by Slag Treatment with Copper Addition
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 968Boron Removal from MG-Si by Slag Treatment with...

Boron Removal from MG-Si by Slag Treatment with Copper Addition

Abstract:

The effect of slag treatment with Copper addition in silicon purification by metallurgical methods was examined in this paper. The microstructures and contents of Si-Cu alloy after slag refining were investigated by XRD and ICP, respectively. The majority phases in the Si-Cu alloy were Cu₃Si and Si. The partition ratio of boron (L_B) between slag and silicon was studied with and without Cu addition. Experimental results show that slag treatment with Cu addition can improve the L_B in CaO-SiO₂-CaF₂ slag system, where a maximum boron removal ratio of 85% could be achieved.