半钢冶炼炉渣气化脱磷实验研究

Experimental Study on Gasification Dephosphorization of Semisteel Smelting Slag

在介绍某炼钢系统工艺流程及基于溅渣过程气化脱磷原理和特点的基础上,探讨了温度、Fe O含量、碱度、氮气流量四大因素对半钢冶炼炉渣气化脱磷的影响问题。结果显示,在实际生产过程中,需谨慎选择出钢温度,可以适当提高炉渣中Fe O的含量,适当增加氮气流,使终渣的碱度适当的降低。将气化脱磷渣进行循环使用后,可减少资源、能源消耗,降低对环境影响,节约生产成本,且对后续炉次的冶炼无影响,因此值得在钢铁工业中推广实践。

Based on the introduction of the process flow of a steelmaking system and the principle and characteristics of gasification dephosphorization based on slag splashing process, the effects of temperature, FeO content, alkalinity and nitrogen flow rate on gasification dephosphorization of semi-steel smelting slag are discussed. The results show that in the actual production process, the tapping temperature should be selected carefully and the content of FeO in slag can be increased appropriately, so that the basicity of final slag can be reduced properly, and the nitrogen gas flow can be appropriately increased. After the gasification dephosphorization slag is recycled, it can reduce the consumption of resources and energy and the impact on the environment, save production costs, and has no impact on the subsequent furnace smelting. Therefore, it is worthy of popularization and practice in the iron and steel industry.