摘要
采用二次回归正交试验方法测定了1530℃下CaO-Al2O3-CaF2-SiO2-MgO五元精炼渣系的起泡性能。得出炉渣起泡指数与炉渣光学碱度、渣中Al2O3及CaF2含量间的回归方程。结果表明:炉渣的光学碱度和CaF2含量对起泡指数有较大影响,而Al2O3含量对起泡指数影响很小。具有最佳发泡性能的炉渣成分中CaO,Al2O3,CaF2,SiO2,MgO的质量分数分别为:44.06%,30.00%,7.00%,8.94%,10%。研究结果还表明:炉渣起泡指数与炉渣粘度成正比,而与表面张力和密度的平方根成反比。
The foaming performance of CaO Al 2O 3 CaF 2 SiO 2 MgO slag has been investigated at 1 530 ℃ by means of quadric regression design. A regression equation describing the quantitative relation between foaming index and slag composition has been obtained. The results indicate that optical basicity and CaF 2 greatly influence the foaming index while Al 2O 3 content does not obviously. The slag composition with the optimum foaming performance is CaO 44.06 %, Al 2O 3 30.00 %,CaF 2 7.00 %,SiO 2 8.94 % and MgO 10 %. The further analyses show that the foaming index is proportional to the slag viscosity and is inversely proportional to the square roots of surface tension and density of the slag.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1999年第2期14-18,共5页
Journal of Iron and Steel Research
关键词
钢包炉
精炼渣
起泡指数
炼钢
ladle furnace,refining slag,foaming index