The physical properties of CaF2-CaO-Al2O3-SiO2 slag system for ESR of 12Cr
It is an effective way to decrease power consumption, pollution emission, to increase productivity and improve ingot quality by using lower CaF2 content even CaF2 free slag during the electro-slag remelting (ESR) process. In this study, a conventional slag, namely ANF-8 with composition of 60 mass％CaF2-20 mass％CaO-20 mass ％Al2O3 was chosen as a reference slag. A new quaternary slag system of CaF2-CaO-Al2O3-SiO2 with four lower CaF2 content levels in mass fraction, 59％, 55％, 50％, 45％ were prepared and labeled as S1, S2, S3 and S4 respectively. The effects of CaF2 content and temperature on the physicochemical properties of the slag were investigated. The results showed that the melting points and the conductivity of the samples S1-S4 were all lower than those of the sample ANF-8. The melting point and the conductivity (1600°C) of Sample S4 achieved 1372°C and 1.936Ω-1cm-1, respectively. The conductivities of Sample S4 at 1550-1650°C reached 1.741-2.131Ω-1·cm-1, and were lower than those of ANF-8 and S1-S3. Considering the physicochemical properties of the four new slags in the CaF2-CaO-Al2O3-SiO2 quaternary system and low CaF2 in the slag to decrease the power consumption and pollution emission, the slag S4 was the most suitable for the ESR process.
Melting point viscosity conductivity calcium fluoride electro-slag remelting
Xiaohua WANG Ying LI Chen YAN Beiyue MA Jie ZENG
School of Materials and Metallurgy, Northeastern University, Shenyang, Liaoning, 110819, 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）