鐵水預(yù)處理脫錳渣-鐵水及轉(zhuǎn)爐渣-鋼水間磷的分配平衡.pdf

1、武漢科技大學(xué)碩士學(xué)位論文鐵水預(yù)處理脫錳渣鐵水及轉(zhuǎn)爐渣鋼水間磷的分配平衡姓名：劉君申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：鋼鐵冶金指導(dǎo)教師：李光強(qiáng)20070527第1I頁(yè)武漢科技大學(xué)碩士學(xué)位論文Inordertomeettheincreasinglystrictrequestsofsteelusersforsteelqualities，thecontentandrangeofimpuritiescontaininginsteel，especiallyth

2、oseofphosphorus，isthereforerequ／redtobeaslowaspossibleInordertomeettheproductionrequestsofsteelworks，demanganizationpretreatmentisrequiredtotakentohotmetalcontaining03％【Mn】and01％【P】afterdesilicationDemanganizationdemandl

3、owbasicityoxidizingslags，whichisincontradictionwithdephosphorizationanddesulphurizationpretreatmentS0forthesakeofknowingthechangeofcontentof【p】Pandfactorsaffectingitduringthedemanganizationanddeterminingthehighefficiency

4、slagsandslagformingsystemofconverterthestudyaboutphosphomsdistributionratiobetweendemanganizationslagandcarbonsaturationhotmetalisveryimportantInadditionitisnecessarytomeasurethephosphorusdistributionratiobetweenconverte

5、rslagandlowmanganesemoltensteel，astheminimumphosphomscontentoflow—manganeseliquidsteelwithwhiehtheconverterblowingendcanreachhasn’tbeenreportedInthispaperaccordingtotheproblemofactualproductionthephosphorusdistributioneq

6、uilibriumhasbeenmeasuredbetweendifferentslagsandhotmetalormoltensteelduringtheprocessofdemanganizationnemanganeseorphosphorusdistr／butionratiobetweenslagsandAgandsolidironachievedat1573K、1623K、1673Khavebeentraitsfo咖edjnt

7、odistributionratiobetweenslagsandcarbonsaturationhotmetalthroughrelatedthermodynamicparameterSotherelationbetweenPequilibriumcontentofhotmetalandslagcomponent＆ternpersturehavebeengainedAtthesametime，thestudyoffactorsaffe

8、ctingphosphomsdistributionratiobetweenconverterslagandlowmanganesemoltensteelhavebeencarriedoutTheconclusionsatesummedupasfollowing：1nephosphomsdistr／butionratiobetweendemangan／zationslagandcarbonsaturationhotmetalincrea

9、sewithbasicityThemanganesedistributionratieachthehighestvalueas65012withbasicityis019at1573Kwhilephosphorusdistributionratiois11282nephosphorusdistributionratiobetweendemanganizationslagandcarbonsaturationhotmehalincreas

10、ewiththecOntentofFetOespeciallyasbasicityisattherangeof0264)273neincreaseofA1203hasverylittleeffectonthephosphorusdistributionratiobetweendemanganizationslagandcarbonsaturationhotmetalwhileMgOmakeitbigger4Thephosphomsdis

11、tributionratieachesthehighestvalBeas9235whilethemanganesedistributionratiois19715andfMnlofcarbonsaturationhotmetalis0021％5Theconnectionbetweenphosphorusdistributionratioandslagcomponent＆temperaturecanbedescribeasfollow：工

12、r。。；39252o1462T1541(％FcO)1721(％Mn0)0249(％SiO2)3799(％C00)26—66(％P20，)6Themanganeseorphosphomsdistributionratiobetweenconvertcrslagandlowmanganesemo】tensteelincreasewithFct0contentaslongasitsvalueles8thall35％7nemanganesedi

13、stributionratiobetweenconverterslagandmoltensteelreachthehighestvalue18310while【Mn】is0011％and【P】is00012％，it’sgoodtosatisfytheneedsofdemanganizationKeywords：lowmanganesesteel，hotmetalpretreatment，dephosphorizationcarbonsa