510L汽车大梁钢精炼渣系的脱硫研究
杨吉春，王学勇，栗宏伟，杜海龙
（内蒙古科技大学材料与冶金学院，内蒙古包头市014010）
关键词：精炼渣；汽车大梁钢；氧化钡；脱硫
中图分类号：TF769.2 文献标识码：A
摘要：采用二次正交回归法，探索精炼渣内不同物质对熔化温度、粘度和脱硫率产生的影响。研究结果表明，BaO含量提高，熔化温度减小，至12%左右持续平缓；当2<CaO/Al2O3<2.6时，熔化温度上升，2.5左右达到峰值，当2.6<CaO/Al2O3<4，熔化温度减小；SiO2含量提高，熔化温度加大，12%左右加速上升。当0<BaO<15%时，粘度变小，12%左右曲线斜率接近零；当2<CaO/Al2O3<4时，粘度升高；当10%<SiO2<20%时，粘度升高，至14%左右，精炼温度图像斜率稍有增加。当0<BaO<15%时，脱硫率先增加后降低；脱硫率随CaO/Al2O3比值增加先升后降，2.6左右最高；脱硫率随SiO2含量的提高逐渐变差。
Research on the desulfurizationof 510L automobile beam steel refining slag system
Yang-Jichun, Wang-Xueyong, Li-Hongwei, Du-hailong
（Materials and Metallurgy School,Inner Mongolia University of Science and Technology, Baotou 014010, China）
Key words:refining slag; automobilebeam steel;barium oxide; desulfurization
Abstract: The method of quadratic orthogonal regressivewas used to research the influence of different substances inside refining slagon melting temperature, viscosity and desulfurization degree. The result showsthat BaO content goes up continuously as the melting temperature decreases andbegins to flat at the point of 12%. When CaO/Al2O3content varies from 2 to 2.6, the melting temperature increases and reaches tothe peak around 2.5. When CaO/Al2O3 content varies from2.6 to 4, melting temperature decreases; when SiO2 content goes up,the melting temperature increases and soars up from 12%. When BaO contentvaries from 0 to 15%, viscosity diminishes and rate of curve approximates tozero around 12%. When CaO/Al2O3 content varies from 2.6to 4, viscosity goes up;while SiO2 content varies from 10% to 20%,viscosity goes up to approximate 14 % and the rate of refining temperaturepattern increases slightly. When BaO content varies from 0 to 15%, desulfurizationrate firstly increases and and then decreases with increasing the specificvalue of Cao/Al2O3, reaching the peak of 2.6. Desulfurizationrate goes down with increasing the content of SiO2.