摘要
针对顶底复吹转炉炼钢生产,结合气化脱磷热力学理论分析,研究了供氮强度、焦粉加入增加比例和底吹气体流量分别对气化脱磷的影响。结果表明,在炼钢温度下用碳质脱磷剂还原炉渣中P_2O_5是可行的,选择以焦粉作为还原剂更加合理;为了保证气化脱磷率在36%以上,应将供氮强度、焦粉加入增加比例和底吹气体流量分别控制在3.5~4.5 m^3/(t·min)、8%~12%和280~400 m^3/h为好。
The effect of nitrogen supplying intensity and ratio of coke powder and bottom blowing gas flow rate on gasification dephosphorization are studied,in combination with thermodynamic analysis of gasifica- tion dephosphorization for top and bottom combined blowing converter in this paper. The result shows that it is feasible to use carbon-based dephosphorizer to reduce P2O5 in slag at steelmaking temperature, and it is more reasonable to choose coke powder as reducing agent. In order to achieve the gasification dephosphori- zation rate more than 36%, the nitrogen supplying intensity, ratio of coke powder and bottom blowing gas flow rate should be controlled at 4.5 -6.5 m3/（t min） ,8% - 12% and 280 -400 m3/h respectively.
出处
《钢铁钒钛》
CAS
北大核心
2017年第6期108-112,共5页
Iron Steel Vanadium Titanium
关键词
转炉
溅渣护炉
气化脱磷
气体流量
converter, slag splashing in converter , gasification dephosphorization, gas flow rate
