120t转炉冶炼无取向硅钢脱硫技术研究

来源期刊：钢铁2011年第2期

论文作者：吴明 李应江

文章页码：30 - 34

关键词：转炉； 无取向硅钢； 烟气分析； 脱硫

Key words：converter； non-oriented silicon steel； flue gas analysis； desulphurizing

摘    要：结合冶炼无取向硅钢的生产实际,对钢中硫的来源,以及炉渣性质、钢水温度、底吹强度对脱硫的影响进行了分析。研究表明,转炉钢中硫的主要来源为铁水、废钢、铁水渣及石灰带入;冶炼硅钢时,终渣碱度为3.0~3.5,w((FeO))≤20%,终点钢水温度大于等于1 680℃,加大底吹搅拌强度能提高转炉脱硫效果。硅钢平均出钢硫的质量分数为0.004 8%,能满足无取向硅钢对硫含量的要求。

Abstract: With the actual production of non-oriented silicon steel,the source of sulphur and the effect of metallugic parameters like slag properties,temperature of molten steel and bottom stirring on desulphurizing ability were investigated.The results show that the main source of sulphur is molten metal,scrap,the remaining slag volume in hot metal and lime.The degree of desulphurization for smelting silicon steel can be increased through adopting the following measures,such as the basicity of finishing slag is 3.0-3.5,w((FeO))≤20%,finish temperature is no less than 1 680 ℃ and enhance bottom stirring.The average w([S]) is 0.004 8%,whtch can satisfy non-oriented silicon steel.