【摘要】 根据冶金热力学理论,从钢水与炉渣成分的平衡关系出发,对马钢CSP流程生产的钢水硅含量的主要影响因素进行理论分析。理论计算和实际生产数据表明,对于低碳铝镇静钢,钢包顶渣中SiO2的含量和钢水中的酸溶铝含量是控制钢水硅含量的主要因素。当钢水中酸溶铝的质量分数为0.025%和钢包顶渣中SiO2的质量分数不超过4%时,可以把钢水硅的质量分数控制在0.03%以下。在此基础上,结合马钢现有生产条件,提出了有效控制钢水硅含量的具体措施。更多还原

【Abstract】 According to metallurgical thermodynamics,the main factors influencing silicon content of molten steel in CSP process were analyzed based on the equilibrium of molten steel with top slag in ladle.The theoretical calculation and production data show that the content of SiO₂ in top slag and soluble aluminum in molten steel are main factors of controlling silicon content of molten steel for low carbon aluminum killed steel.When the soluble aluminum of molten steel is near 0.025% and the content of SiO₂ in top slag is lower than 4%,the silicon content of molten steel can be controlled below 0.03%.Thereby,the practical measures to control silicon content of molten steel were proposed according to the practical conditions at Masteel.更多还原