150 t LF炉深脱硫工艺实例分析  

Case analysis on deep desulfurization technology of 150 t LF furnace

作　　者：田云生[1] 赵天阳 孙拓[1] Tian Yunsheng;Zhao Tianyang;Sun Tuo(Anyang Ironand Steel Co.,Ltd.,Anyang 455004,China;Anyang Iron and Steel Group Corporation,Anyang 455004,China)

机构地区：[1]安阳钢铁股份有限公司,河南安阳455004 [2]安阳钢铁集团有限责任公司,河南安阳455004

出　　处：《金属制品》2019年第1期42-45,共4页Metal Products

摘　　要：介绍150tLF炉深脱硫工艺的试验过程,通过对试验过程的数据整理,分析150tLF炉深脱硫试验过程中操控的难点及不足,结合LF炉脱硫过程中热力学与动力学条件,总结出150tLF炉深脱硫工艺:转炉粗钢w(S)≤0.005%;脱硫温度≥1612℃;造渣料添加石灰13.13kg/t钢,精炼剂3kg/t钢,萤石0.88kg/t钢;脱硫前钢中铝质量分数控制在0.031%~0.047%;碱度R为5.0左右;在条件允许的前提下尽可能提高搅拌强度,推荐氩气流量850L/min。冶炼产品中硫质量分数控制在0.0005%以下,达到超低硫钢冶炼要求。The test process of deep desulfurization process in 150 t LF furnace is introduced.By sorting out the data of the test process,the difficulties and shortcomings of the operation in the deep desulfurization test of 150 t LF furnace are analyzed.Combined with the thermodynamic and dynamic conditions of the desulfurization process of LF furnace,the deep desulfurization process of 150 t LF furnace is summarized:Converter crude steel w(S)≤0.005%;Desulfurization temperature≥1612 ℃;The addition of lime is 13.13 kg/t,refining agent is 3 kg/t,fluorite is 0.88 kg/t.Before desulfurization,the mass fraction of aluminium in steel is controlled 0.031%~ 0.047%.Alkalinity R is about 5.0.Increasing stirring intensity as much as possible and recommending argon flow rate of 850 L/min.The sulphur mass fraction in smelting products is controlled below 0.0005%,which meets the smelting requirement of ultra-low sulphur steel.

关 键 词：LF炉 脱硫 低硫冶炼 造渣剂 

分 类 号：TF713.3[冶金工程—钢铁冶金]