According to the ion and molecule coexistence theory of slag and combining the viscosity and surface tension of chromium-containing converter slag measured by predecessors, the calculation model of viscosity and surface tension about temperature and structural units had been established to predict the viscosity and surface tension of chromium-containing converter slag. The calculated values of the model agreed well with the measured values in the literature, indicating the model could help to predict the viscosity and surface tension of chromium-containing converter slag. The results showed that the viscosity and surface tension of slag increased with the increase of Cr2O3 content, while decreased with the increase of FeO content. Cr2O3 had the greatest influence on the surface tension. The viscosity of slag increased with the increase of basicity. With basicity increasing, the viscosity of slag increased, and the basicity had the greatest influence on viscosity, while the surface tension first increased and then decreased, and reached a maximum value with basicity of 1.8.
张康晖, 王月, 邹长东, 刘飞. 含铬转炉渣黏度和表面张力的计算模型[J]. 中国冶金, 2020, 30(1): 38-43.
ZHANG Kang-hui, WANG Yue, ZOU Chang-dong, LIU Fei. Calculation model of viscosity and surface tension for chromium-containing converter slag[J]. China Metallurgy, 2020, 30(1): 38-43.
YANG X M,SHI C B,ZHANG M,et al.A thermodynamic model of sulfur distribution ratio between CaO-SiO2-MgO-FeO-MnO-Al2O3 slags and molten steel during LF refining process based on the ion and molecule coexistence theory[J].Metallurgical and Materials Transactions B,2011,42(6):1150.
LI J L,XU A J,HE D F,et al.Effect of FeO on the formation of spinel phases and chromium distribution in the CaO-SiO2-MgO-Al2O3-Cr2O3 system[J].International Journal of Minerals,Metallurgy and Materials,2013,20(3):253.
[11]
Hino M,Higuchi K,Nagasaka T,et al.Phase equilibria and activities of the constituents in FeO·Cr2O3-MgO·Cr2O3 spinel solid solution saturated with Cr2O3[J].ISIJ International,1994,34(9):739.
[12]
黄希祜.钢铁冶金原理[M].北京:冶金工业出版社,2013.
[13]
ZHANG G H,XUE Q G,CHOU K C.Study on relation between viscosity and electrical conductivity of aluminosilicate melts[J].Ironmaking and Steelmaking,2011,38(2):149.