标题:
铝镇静钢LF低氟精炼渣系的脱硫实验研究Experiment Study on Desulfurization of Low-Fluoride LF Refining Slag for Aluminum Killed Steel
作者:
徐昊, 王珏, 吴六顺, 董元篪
关键字:
LF精炼, 脱硫, 粘度, 铝镇静钢, Li2OLF Refining, Desulphurization, Viscosity, Aluminum Killed Steel, Li2O
期刊名称:
《Metallurgical Engineering》, Vol.2 No.1, 2015-03-27
摘要:
本文采用CaO-Al2O3-SiO2-MgO-CaF2基础渣系，以Li2O替代CaF2，进行铝镇静钢LF脱硫实验。研究结果表明：渣中CaF2经Li2O替代后，在1500℃时，CaO (55.8%)-Al2O3 (20%)-SiO2 (11.2%)-MgO (10%)-Li2O (3%)渣的粘度低于0.3 Pa∙s，渣的流动性能良好；温度1600℃、渣金比1:10时，该渣脱硫率77.14% (脱硫之前采用铝脱氧)，钢水硫含量能降到0.008%。随着渣中Li2O含量的增加，脱硫率升高，最高可达80%。Desulfurization efficiency of CaO-Al2O3-SiO2-MgO-CaF2 slag for Al-killed steel was studied with Li2O replacing CaF2. Experimental results show that at 1500˚C, the viscosity of CaO (55.8%)-Al2O3 (20%)-SiO2 (11.2%)-MgO (10%)-Li2O (3%) slag is lower than 0.3 Pa∙s, having good flow properties; at 1600˚C, under the condition of slag-metal ratio of 1:10, desulfurization rate of the slag can reach 77.14%, and sulfur content in steel decreases to 0.008%. Desulfurization rate can even reach to 80% with Li2O content increasing in slag after composition optimization.