鋼包渣改性工藝的研究.pdf

1、東北大學(xué)碩士學(xué)位論文鋼包渣改性工藝的研究姓名：吳迪申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：冶金工程指導(dǎo)教師：姜茂發(fā)朱苗勇20030601東北大學(xué)碩士學(xué)位論文BSTRACTStudyOnTheProcessForChangeLadleSlagPropertiesInthisthesis，analyzingandconsultingsomedomesticexperience，theauthormadesomestudiesandtrialsonladle

2、slagpropertychanging，combinedthespecificationsofthefacilitiesinBenxiIron&SteelCoLtd，withtheproblemsexistingintheprocessaboutsteelmakinginitssteelmakingplant，suchas：thequalityoftherawmaterialcouldnotmeettherequirementofth

3、eproduction；thesulfurreturnwasmarkedlyduringBOFprocess；thesulfurcontentattheendofblowwasnigh；highoxidativeconverterslagenteringintotheladletakesdisadvantageoftherefiningprocessandthequalityofthesteelproductsetcTheaimofth

4、eseactionsaretoincreasethedeSrateduringtapping；decreasetheoxidbillityoftheslagintheladle；improvethequalityoftheliquidsteel；reducethecostoftheproductionandSOonTheobtainedresultswereasfollow：1Duringtapping，thedesuifurizati

5、onrateoftheheatswithladleslagpropertychangingtreamaentWasaround2746％，themaximumWas5485％Comparedwiththeheatsthatusesynthesizedslagandnormalheats，thedesulfurizationrateofthemincreased1171％and424％respectively2，F(xiàn)ortheheats、v

6、ithladleslagpropertychangingtreatmenttheMnOcontentinladleslagofitwasnearlyassameastheheatswhichusedsynthesizedslag，andwithl79％lowerthannormalheats；theFeOcontentinladleslagofitWasl1l％and852％lowerthanthosewhichusedsynthesi

7、zedslagandnormalheatsrespectivelyBeforerefining，minimum(FeO)inmeltingslagis13％，itcreatedabetterreductiveconditionforLFtode—S3RegardingtheconditionsforimprovingLFrefining，comparedwithandwithoutladleslagpropertychangingtre

8、atment，theaveragealuminumconsumptionduringprocesswaslower7892kg／heats；Thetreatmentcycletimewasreducedaverage2375min；atthesametime，therefractoryconsumptionforladlelining，LFcoverandelectrodesetcwereallreducedenormouslyAllt