Abstract:In order to effectively measure and evaluate the binary phase diagram of CaF2-Al2O3,the binary phase diagram of CaF2-Al2O3 was drawn by FactSage software calculation and melting point tests. The eutectic point composition was 10% Al2O3-90% CaF2, and the eutectic temperature was 1 340 ℃. TG-DSC tests showed that the binary system had an obvious weight loss and endotherm during the heating process. The weight loss rate of 90% CaF2-10% Al2O3 can reach 27% at 1 500 ℃ and the main volatile was CaF2. A new phase diagram of CaF2-Al2O3 was obtained based on the weightlessness and volatilization reaction. The composition of the eutectic point was 12% Al2O3-88% CaF2, and the eutectic temperature was 1 340 ℃. Finally, the XRF detection results of the slag after melting are basically consistent with the new phase diagram. The results are of reference value to the determination of the melting point of slag containing volatile components and the drawing and analysis of phase diagram.
赵忠宇, 赵俊学, 谭泽馨, 卢亮, 崔雅茹, 李小明. 基于挥发影响的CaF2-Al2O3二元相图测定与解析[J]. 钢铁, 2020, 55(4): 34-39.
ZHAO Zhong-yu, ZHAO Jun-xue, TAN Ze-xin, LU Liang, CUI Ya-ru, LI Xiao-ming. Determination and analysis of CaF2-Al2O3 binary phase diagram based on volatilization effect. Iron and Steel, 2020, 55(4): 34-39.
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