摘要
在130 t电弧炉上进行了复合喷吹剂喷吹微粒脱磷的实践应用。设计了电弧炉氧化期脱磷渣系的组成,炉渣碱度控制在2.2~2.8,氧化铁含量控制在15%~20%。并以氮气为载体喷吹按照一定比例配制的碳粉(15%~20%)、CaO粉(40%~60%)、MgO粉(25%~30%)、CaC粉(5%~10%)的复合粉剂。40Cr、45钢、20CrMnTi和60Si2Mn等钢采用喷吹复合喷吹剂冶炼工艺后,加快了熔剂的反应面积,提高了成渣速度,各项生产指标得到了改善,其中吨钢电耗降低90 kWh/t,吨钢钢铁料消耗降低9.3 kg/t,吨钢熔剂消耗减少4.8 kg/t,生产率提高5%~6%,吨钢综合生产成本降低了25元/t。
The practical application of particle dephosphorization with compound injection agent on 130 t electric arc furnace is carried out.The composition of dephosphorization slag system in the oxidation period of electric furnace is designed,basicity of slag is controlled between 2.2-2.8,and the content of iron oxide is controlled between 15%-20%.The composite powder of carbon powder(15%-20%),CaO powder(40%-60%),MgO powder(25%-30%)and CaC powder(5%-10%)prepared in a certain proportion is injected with nitrogen as the carrier.After adopting the smelting process of injection compound injection agent on EAF steelmaking of 40 Cr,0.45 C steel,20 CrMnTi and 60 Si2 Mn etc alloy steels,the reaction area of flux is accelerated,the slag forming speed is improved,and various production indexes are improved.Among them,the power consumption per ton steel is reduced by 90 kWh/t,the steel material consumption per ton steel is reduced by 9.3 kg/t,the flux consumption per ton steel is reduced by 4.8 kg/t,the productivity is increased by 5%-6%,and the comprehensive production cost per ton of steel is reduced by 25 yuan/t.
作者
陈军召
张彦辉
谈岸童
李立凯
康建光
Chen Junzhao;Zhang Yanhui;Tan Antong;Li Likai;Kang Jianguang(Zenith Steel Group Co.,Ltd.,Changzhou,213000;Xinsanzhou Special Steel Co.,Ltd.,WuXi 214181;Eastran Special Steel Co.,Ltd.,ChangZhou 213100)
出处
《特殊钢》
2023年第1期34-38,共5页
Special Steel
关键词
电弧炉
脱磷
喷吹
复合粉剂
成本
Electric Arc Furnace
Dephosphorization
Injection
Composite Powder
Cost
