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以河北钢铁集团承德分公司炼钢厂半钢脱磷处理工艺为研究对象,对半钢钢包进行设备改造,增设专用脱磷氧枪实现钢包内高效脱磷。利用Fluent流体力学软件对氧枪射流进行仿真模拟,通过对氧气射流的研究来优化供氧制度,提高脱磷效率。工业试验数据表明,专用脱磷氧枪具有良好的化渣和搅拌效果,新工艺具有良好的脱磷效果,平均脱磷率达到51.8%。此外,在试验温度范围内,随着半钢出钢温度的增加,脱磷率呈现上升的趋势;脱碳量与脱磷量平均比例为3.17∶1。
Taking the semi-steel dephosphorization treatment process of steelmaking plant of Chengde Branch of Hebei Iron and Steel Group as the research object, the semi-steel ladle was reformed by equipment and a special dephosphorization lance was added to realize high-efficiency dephosphorization in the ladle. Fluent fluid mechanics software was used to simulate the oxygen lance jet flow. The oxygen supply system was optimized by studying the oxygen jet and the dephosphorization efficiency was improved. Industrial test data show that special dephosphorization lance has good slag and stirring effect, the new process has a good dephosphorization effect, the average dephosphorization rate of 51.8%. In addition, within the experimental temperature range, the dephosphorization rate showed an upward trend with the increase of the tapping temperature of the semi-steel; the average ratio of the amount of decarburization and dephosphorization was 3.17: 1.