精煉工序鋼水溫度控制研究

1、東北大學(xué)碩士學(xué)位論文精煉工序鋼水溫度控制研究姓名：趙偉申請學(xué)位級別：碩士專業(yè)：鋼鐵冶金指導(dǎo)教師：鄒宗樹20030801東北大學(xué)碩士學(xué)位論文ABSTRACTABSTRACT1hetemperatureadjustingfunctionsofAHFandLFfurnacesinBenxiNo2SteelmakingFactoryhavebeenstudiedinthisthesisTheresultshavebeenappliedinste

2、elrefiningprocessesTheheatingratioofAHFwashighsinceNov15，1998Theheatingratiois45％in2002Becauseoflimitationofchemicalheatingoperation，surfaceandinnerdefectsofslabformedeverynowandthenOntheotherhand，undertheoperationwithth

3、eoriginaldesignparameters，theutilizationratioofaluminumislowtheburninglossofelementinsteelishigh，andtheeffectoftemperatureelevationisbad，Inordertosolvetheabove—menttonedproblems，thechangeoftemperaturealongsteelmakingproc

4、esshasbeenanalyzedandthecausesofhighbeatingratioatAHF131’ocesswereclarifiedThentheoptimizedoperationwasdeterminedas：strictimplementationofsteelmakingprocessroles，ensuringofrefiningtime，enhancementofprocessmanagement，keep

5、ingprocessrhythm，strictcontrolofladletransportationandSOonBymeansoftheseoperationstheproblemoftemperatureelevationinAHFprocesswassolvedThenthealloyutilizationratiowasincreasedandheatingefficiencywasenhancedAtierpracticef

6、orhalfyeartheheatingratioofAHFwaslowerhanbeforeTheheatingratioiS3489％inJune2003Andthequalityot’slabwasimprovedconsumptionindexofsteelmakingfactoryWasdecreasedeconomicalbenefitwasjncreasedTheconsumptiondecreased444million

7、YuallfromJanuarytoJune2003ThenumericalsimulationofternperaturechangeinLFprocesswasstudiedThesinmlatingresultsshowedthatitiSnecessarytopreheatladleSHfficientlyshortensmeltingtimeandladletransportationtimetoinereasesteelte

8、mperaturejnladleSubmergedarcrefiningtechnologyisbenefittoincreasingheatingefficiencyinIFprocessTheamountofrefiningslagandbottomblowingintensityarethestrongestf“actorsinfluencingtheLFrefiningefficiencyKeywordsteelrefining