含鈮鐵(鋼)水脫磷、脫硫研究

1、內(nèi)蒙古科技大學(xué)碩士學(xué)位論文含鈮鐵（鋼）水脫磷、脫硫研究姓名：藺瑞申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：鋼鐵冶金指導(dǎo)教師：李保衛(wèi)姜銀舉20080525內(nèi)蒙古科技大學(xué)碩士學(xué)位論文2ResearchofdephosphizationdesulphurizationinmeltedironmoltensteelcontainingniobiumAbstractIndertorealizecomprehensiveutilizationfniobiumreso

2、urcesofBaiyunEboMine“DirectAlloyingmethod”isputfwardfhighstrengthlawalloyingsteelincludingniobiumbyconventionalwkingprocedurewithblastfurnaceusedtoniobiumcontainmoltenironmultifunctionconverterfsteelmaking.Therearetwomet

3、hodsfit:blastfurnaceusedtoniobiumcontainmoltenironmoltenironpreprocessedtodephosphizationdesulphurizationmultifunctionconvertertodecarburizationniobiumconservationblastfurnaceusedtoniobiumcontainmoltenironmoltenironprepr

4、ocessedtodesulphurizationmultifunctionconvertertodecarburizationniobiumconservationmoltensteelpreprocessedtoreduceddephosphization.Inthispaperitcontainsfundamentalresearchofdephosphizationdesulphurizationinmeltedironmolt

5、ensteelcontainingniobium.Fonethingthepresentapplicationthedevelopmenttendencyroundthewldofthehotmetalpretreatmentareintroducedthetraitnecessaryofitareanalyzedtheresearchresultswhichhavebeenaccomplishedaboutthepretreatmen

6、tofhotmetalfieldissummarized.Thistopichascompletedtheseriesresearchwkbyfollowing:BythermodynamicanalysisatthepremiseofαNb2O5=1thethermodynamicsofdephosphizationniobiumconservationwithBaOispossible.theoxidativeprocesswith

7、BaCO3—BaF2slaginmoltenironcontainingniobiumshowsthatNbPareoxidedatthesametimeNbisoxidedatpriityofP.FurtherreductionofNboxidationexperimentNboxidationPoxidationsynthesisexperimentshowthat:ComplexcompoundsofNbPinslagcanlow

8、erαNb2O5ofslag.ThisphenomenonistheFundamentalcauseofproducingNboxidation.TheexperimentonreducingdephosphizationwithCahasbeencarriedout.ItshowsthatTheeffectofdephosphizationisnotobvious.TheexperimentofdesulfurizationwithM