搜索
(,200431):,,:;;:TF713:B:1008-0716(2005)04-0005-04PracticeofDe-P/De-CSteelmakingProcesswithaConverterSHAOShi2jie(SteelmakingPlantofStainlessSteelBranch,Shanghai200431,China)Abstract:ProductionpracticeoftheDe-P/De-CsteelmakingprocessatStainlessSteelBranchissummarizedinthispaper.Thetechnicalfeaturesarealsodiscussed,includingthemainmaterialscharg2ing,slag2makingprocess,blowingpattern,manganeseoredirectalloying,etc.TheresultsofDe-P/De-CsteelmakingprocessgainedbyStainlessSteelBranchisdescribed.KeyWords:converter,De-P/De-C,alloying1,,,,[1],,(De-P)(De-C),2090,NKK350t,LD-NRP(NewRefiningProcess),LD-ORP(OptimizingRefiningProcess):1974199626034725,,,+De-P+De-C2P2.1PP,,,1350140090%92%95%(),1,,,92%,1353,[C]3.24%,(De-C)520054©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1001)92(1t)95(12t)2.2De-P2.2.1(P2O5),(CaO)CaOaCaO,P2O5,[2]P,[C],1450,,,,,,2.2.2,[O]FeO,,FeO,(FeO),FeOFeO,FeO,2.2.3Si,Si,,[Si]Si0.35%,,,,De-P,,,,,2.3De-P,De-P2.0m3/min,,12minSi0.35%,,De-P,De-PDe-PC-O,,De-P34min,,,,[P]0.037%,,34min,[P]0.018%3De-C3.1De-CSi,P,S,De-CC,,(MgO)Si,SiO2(),De-C22De-CTable2SteelslagcompositionwithDe-CprocessatStainlessSteelBranch%CaOSiO2MgOMnOP2O5Al2O336.217.207.182.231.691.48,,,FeODe-CC,Si,P,,:1300,[C]2.8%,,620054©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[P],,De-P[C]2.80%,De-C2535kg/t,90110kg/t30%,20kg/t3De-C3De-CTable3MaintechnicalindicatorsinDe-Cprocess[P]/%/(kgt-1)/(kgt-1)/(kgt-1)/(m3t-1)/%0.010510485935953.2De-C(:)De-P,4,Si4De-PTable4CompositionofhotmetalaftertheDe-Pprocess%CSiMnSPT/2.83.50.40.0100.0301300,,,,11De-CCFig.1VariationsincarboncompositionintheDe-Cprocess3.3De-C,Mn[2]:LMn=(Mn%)[Mn%]=5571KMn(FeO%)fMnFeOMnO[Mn%](FeO),Mn,,,(FeO),Mn,,,(FeO),Mn,,(FeO),2,De-C,[Mn]De-C[Mn][Mn]1[1]2De-CMnFig.2VariationsinMncompositionintheDe-Cprocess3,,De-CMn,,Mn100%C3,Mn,,De-C,FeO,De-CMn,Mn,C+1/2O2=COMn+1/2O2=MnO1450,C,,Mn,,,7©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(FeO),MnO,Mn,,De-C,,(MnO),Mn,,MnOC[3],De-CMn,Mn70%,,,53De-CFig.3ComparisonofMnyieldbetweentheDe-CprocessandcommonprocessDe-C,Mn,13(Mn:32%),5,De-C,68.00%,0.21%5Table5ApplicationresultofthemanganeseoredirectalloyingNo./kgMn/%Mn/%114820.1955.00215150.2568.00318170.2561.2547200.1469.30510010.2183.2565000.1176.7478980.1456.02819920.3169.23915010.2574.941016170.2366.251304.30.2168.004(1),,[P]0.010%(2)De-C,80%,68%,(3)De-C,1.,:,1985:213.2..:,1990:194.3,,.().:,1987:145.(:2005-02-25)(4)2005,2007(3),200,,,;;,,,,,,,(:2005-03-29)820054©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.