优化氧枪参数提升含Ti铁水转炉脱磷效果实践

Practice of optimizing oxygen lance parameters to improve dephosphorization effect of Ti-containing hot metal BOF

脱磷是转炉炼钢的基本任务和重要技术指标,脱磷效果直接影响转炉冶炼的生产稳顺和成本。基于此,通过现场取样、模拟试验及利用XRD、SEM、FactSage等手段分析了转炉脱礴机理,研究探讨了氧枪参数优化对含钛铁水脱磷效果的影响。研究结果表明:在相似条件下,氧压和供氧强度优化后,脱磷率由79.61%提高至83.6%,渣料消耗由53.75 kg/t降低至49.78 kg/t,出钢过程回磷率由17.8%降低至11.8%,日产炉数增大1.40炉次。可见氧枪参数优化后,转炉脱磷效果得到明显提高。

Dephosphorization is the basic task and important technical index of converter steelmaking,and the effect of it directly affects the production stability and cost of converter steelmaking.Based on this,the dephosphorization mechanism of BOF was analyzed by means of field sampling,simulation test,and utilization XRD,SEM,FactSage and other means,the influence of oxygen lance parameters optimization on dephosphorization effect o£Ti-containing hot metal was studied.The results show that under similar conditions,the dephosphorization rate increases from 79.61%to 83.6%,the slag consumption decreases from 53.75 kg/t to 49.78 kg/t,the rephosphoration rate during tapping process decreases from 17.8%to 11.8%,and the daily capacity increases by 1.40 heats.It can be seen that the dephosphorization effect of BOF is obviously improved after optimizing the parameters of oxygen lance.