Carbothermal Reduction Process for Production of Coarse Al-Si Alloy
WANG Yao-wu FENG Nai-xiang YOU Jing YANG Dong
School of Materials and Metallurgy, Northeastern University School of Materials and Metallurgy, Northeastern University School of Materials and Metallurgy, Northeastern University School of Materials and Metallurgy, Northeastern University
Abstract：The coarse Al-Si alloy was produced in a carbon tube furnace by using bauxite tailing and soft coal as raw materials. The phases of products obtained in different temperatures and carbon additions were analyzed by X-ray diffraction. The reaction process of producing coarse Al-Si alloy was studied and the acceptable product obtained. The results show that the carborundum was gained at the lower temperature (below 1600℃) when the raw materials were deoxidized in the vacuum carbon tube furnace. When the temperature rised to 1700~1800℃, alumina began to react with carbon to form aluminum oxycarbide. When the temperature was higher than 1800℃, the silicon carbide decomposed aluminum oxycarbide into aluminum and silicon, and the aluminum and silicon reacted to form coarse Al-Si alloy. The content of Al in the coarse Al-Si alloy was more than 40%.
王耀武 冯乃祥 尤晶 杨栋. 碳电热还原法熔炼一次铝硅合金的反应过程[J]. , 2009, 9(3): 531-535.
WANG Yao-wu FENG Nai-xiang YOU Jing YANG Dong. Carbothermal Reduction Process for Production of Coarse Al-Si Alloy. , 2009, 9(3): 531-535.
2009, Vol. 9 
