KR搅拌法铁水预处理工艺简介

KR杨树森,贾猛,王红(包钢(集团)公司设计研究院,内蒙古包头014010):KR,,,,:KR;;:TF704.3:B:1009-5438(2009)01-0085-03KRStirringMethodforMoltenIronPretreatmentYANGShu-sen,JIAMeng,WANGHong(Design&ResearchlnstituteofBaotouSteel(Group)Corp.,Baotou014010,NeiMonggol,China)Abstract:ThisarticleintroducestheKRstirringmethodformoltenironpretreatment;discussesthetheoryandprincipleofdesulfurationbyKRmethod;describestheeffect,advantagesanddisadvantagesofthedesulfuration;discussestheoperationalprocess,sequenceintime,andthetechnicalproblem;andcompareswithothertechniques.Keywords:methodofKR;stirring;sulfurcontent,3:Mg-CaOKR(KR)[1]2150t,KR,1KR搅拌法工艺1.1,,,[2]KR:CaO+FeS=CaS+FeO[3]1.2KR11.3(1)KR1300(2)11/%()/%CaF2AI2O3CaOSiO2MgOPS/mm92330--855100.020.050.50.2~1.08-7012-16-0.030.050.50.2~1.035120092Science&TechnologyofBaotouSteel(Group)CorporationVol.35,No.1February,2009:2008-10-08:(1971-),,,1-;2-;3-;4-;5-;6-;7-;8-;9-;图1KR法主要工艺设备及布置1.4:!!!!!!!!!!!!!!!!!!1.4.1铁水脱硫前扒渣,,,1.4.2加入脱硫剂,,7~10r/min,1.4.3搅拌脱硫,,90~120r/min,,,8~11min1.4.4测温取样,,1.4.5铁水脱硫后扒渣,,,1.50.05%,KR,()22KR()%∀0.0020.002~0.0050.005~0.0101030601.6,,,KR()33KR[S]/%[S]/%0.001%/kg#t-1/min∀0.05%∀0.005%0.24∀9∀0.035%∀0.005%0.27∀82KR法脱硫工艺需要注意的问题2.1,,,,,30h,,7~8h5002.2KR,,,0.4~0.8mm80%2.3KR,,,,,1500mm2.4KR1300,,,,3国内普遍采用的铁水脱硫方法比较3.18635:Mg-CaOKR34()4Mg-CaOKR1CaOMgCaOCaF2234/%0.002~0.0050.002~0.0050.002~0.0055/(kg#t-1)1.085.85206/(kg#t-1)0.4862.6634.035789/12152810/(kg#t-1)0.542.934.0311/%0.050~0.0150.030~0.0100.03~0.0512/(#t-1)20.2823.0317.423.2(1)KR,,,(2)KR,,,,(3)KR(),,CaS,,(4)KR,,120t,KR15(5)KR,,300t,KR4204结束语KR0.005%,KR,,,KR,,,KR[1]张信昭.喷粉冶金基本原理[M].北京:冶金工业出版社,1998.[2]赵沛.炉外精炼及铁水预处理实用技术手册[M].北京:冶金工业出版社,2004.[3]曲英.炼钢学原理[M].北京:冶金工业出版社,1980.871KR