摘要
基于转炉炼钢工艺,对MoO3直接合金化炼钢进行热力学分析.分别计算了在标准状态和实际条件下,铁水中存在的几种可能作为还原剂的元素还原MoO3的吉布斯能.分析了终点钢水中[C]和熔渣中(FeO)含量对MoO3还原反应的影响以及还原反应对钢水温度的影响.结果表明,在标准状态下,铁水中[Si],[C],[Mn],[Fe]都可还原MoO3;在实际条件下,钢水中[C],[Fe]在无外配还原剂的情况下也可还原MoO3且转炉终点[Mo]不会被渣中(FeO)再次氧化.为了提高铁的收得率,计算得到了现场终点钢水中[C]和熔渣中(FeO)合适的含量控制范围.热化学计算发现实际条件下还原反应对钢水温度的影响较小.
Based on the process of BOF, the thermodynamic analysis on MoO3 direct alloying steelmaking was carried out. The Gibbs energy of the reaction for several probably kinds of elements reducing MoO3 was calculated in liquid iron and at the end of steelmaking in the BOF, respectively. The effects of contents of [C] and (FeO) in the end on the reduction of MoO3 were analyzed, and the molten steel temperature changed by reduction reaction was also calculated. The results showed under the standard state condition, MoO3 could be reduced by [Si], [C], [Mn] and [Fe] in liquid iron. Under the actual condition, MoO3 also by [C] and [Fe] in the molten steel without adding the reducing agent, and [Mo] would not be oxidized by (FeO) in the final slag. In order to raise the yield of iron, the right controlling contents of [C] in the final molten steel and (FeO) in the final slag were determined. Under the actual condition, MoO3 reduction reaction had little influence on molten steel temperature.
出处
《过程工程学报》
CAS
CSCD
北大核心
2009年第S1期112-116,共5页
The Chinese Journal of Process Engineering
关键词
钼氧化物
热力学
直接合金化
转炉炼钢
molybdenum oxide
thermodynamics
direct alloying
BOF steelmaking
