转炉终点钢水残锰质量分数及其影响因素分析

通过对转炉终点生产数据和铁水成分的统计分析，研究了影响转炉终点钢水残锰含量的因素及其变化规律。研究表明，转炉终点碳含量和铁水硅含量对转炉终点钢水残锰含量及其收得率影响最大；提高转炉终渣碱度和终渣FeO含量对转炉终点钢水残锰含量及锰收得率产生不利影响。铁水初始锰含量升高有利于提高转炉终点钢水残锰含量，但锰的收得率反而下降；在高拉碳条件下转炉终点钢水温度对锰收得率的影响不明显。

Residual Manganese Content in Molten Steel of End-Point of BOF and Its Influencing Factors

Through the statistical analysis to the production data of end-point of BOF and the contents of molten iron, the factors affected end-point residual content of manganese of BOF and its law have been researched, which has illustrated that the end point carbon content of BOF and initial silicon content of molten iron are the key factors for end-point residual content of manganese and its yield rate. It’s disadvantageous for raising the basicity and FeO content of end slag of BOF to end-point residual content of manganese and its yield rate. Raising the manganese content of molten iron could increase the residual manganese content at end-point of BOF, but decrease its yield rate. The end temperature of molten steel in BOF is unessential to the yield rate of manganese in the condition of high catch carbon operation.