钢液RH精炼中脱硫过程的数值模拟  

Numerical simulation of desulphurization process in RH refining of molten steel

作　　者：胡汉涛[1] 马志刚[2] 蒋晓放[2] 黄宗泽[1] 

机构地区：[1]宝山钢铁股份有限公司研究院,上海201900 [2]宝山钢铁股份有限公司炼钢厂,上海201900

出　　处：《炼钢》2013年第5期52-55,共4页Steelmaking

摘　　要：简析了钢液RH精炼中的脱硫过程。基于冶金热力学和动力学,建立了该过程的数学模型。以该模型对实际过程作了数值模拟,并考察了粉剂的粒度、用量及其在钢中的停留时间对脱硫的影响。该模型给出的结果与工业试验数据较吻合;随着初始硫含量的增加,脱硫率有上升的趋势;减小粉剂粒度可改善脱硫效果;加大粉剂用量能够提高脱硫量,但脱硫剂的最大用量受实际工艺条件所限制。适当降低提升气体流量可延长粉剂在钢中的停留时间和提高脱硫效率。The desulphurization process during vacuum circulation refining was analyzed. Based on the metallurgical thermodynamics and kinetics, a mathematical model was developed for the desulphurization process during the RH refining. The practical desulphurization process was numerically simulated using the model, and the effects of the size of powder, use level of powder and its resident time in liquid steel were examined. The results given by the model are more accordance with the data of industrial experiments. The rate of desulphurization is increased slightly with the increasing initial sulphur content. Decreasing the powder size can improve the desulphurization result. The dessulphurization rate is high at use in large amount, but the most consumption of the powder is limited by the molten steel temperature and the life of the refractory material. Reducing suitably the lifting gas rate can prolong the resident time of the powder particles and increase the desulphurization efficiency.

关 键 词：钢液RH精炼 喷粉脱硫过程 数值模拟 

分 类 号：TF743[冶金工程—钢铁冶金]