Mechanism of slag chemical composition change in ESR process
It is found that the slag chemical composition is changed in ESR process with CaF2 -containing slag. There is a great difference between the initial and the final slag chemical composition in the slag pool. It is of practical and theoretical significance to study the changing mode and mechanism of slag property with the change in ESR composition change for optimizing ESR process. In this paper, simultaneous thermal analyzer (STA) has been used to measure the weight loss of typical slags in CaF2-CaO-Al2O3-SiO2-MgO slag system, as well as the thermal effect. Experimental tests and theoretical calculation have been carried out to simulate quantitatively the practical results. The results indicated that weight loss rate of slag can be increased with CaF2, SiO2, Al2O3 and MgO content increase, and decreased with CaO content increase. Evaporation of SiF4, AlF3, AlOF is found in coexistence. The regression equation of weight loss and conductivity with chemical composition is obtained. A model of slag chemical-composition change has been proposed to quantitatively estimate the change in ESR process.
electroslag refining slag weight loss mechanism of slag chemical composition change simulation calculation
Junxue ZHAO Hongming LING Zhenqiang ZHANG Yanmei CHEN Xiaoming LI
School of Metallurgical Engineering，Xian University of Architecture and Technology，710055，Shannxi, China
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-6
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）