Experimental thermodynamic research on equilibrium between silicon alloy and SiO2-CaO-Al2O3 melt
来源期刊：中国有色金属学报(英文版)2001年第4期
论文作者：王新国 丁伟中 唐恺 蒋国昌 徐匡迪
文章页码：535 - 539
Key words：silicon; oxidation refining; thermodynamic equilibrium
Abstract: The equilibria of Al and Ca between silicon alloy and the SiO2-Al2O3-CaO ternary slags were investigated using graphite crucible at 1 550 ℃. With increasing Al2O3 and CaO content in the slags, the Al and Ca content increase respectively. The variation of the impurities are also affected by the silica content in slag which provides the oxidant during the oxidation refining process. The distributions of the impurities Al and Ca in silicon were given in terms of isoconcentration curves for Al and Ca in the ternary slags of SiO2-Al2O3-CaO. The present experimental work provided available data to analyze the action of Al and Ca during oxidation refining process for silicon alloy.
