梅鋼轉(zhuǎn)爐復吹工藝優(yōu)化及預測模型研究.pdf

1、東北大學碩士學位論文梅鋼轉(zhuǎn)爐復吹工藝優(yōu)化及預測模型研究姓名：李永祥申請學位級別：碩士專業(yè)：鋼鐵冶金指導教師：鄒宗樹黃模華20030801東北大學碩士學位論文AbstractTheoperationparametersofthe150ttopandbottomblowingconvertel’atMeishalSteelanditspredictionmodelarestudiedinthispaperThepresentworkcons

2、istsofthetbllowingthmepm【s：(1)Watermodelstudieswerecarriedouttoinvestigatetheinfluencesofthelancetipconlignration，lancelevel，topblowingrates，bottomblowingtuyerespositionandbottomblowingratesOnthebathmixing血1e’theimpactar

3、eaandpenetrationdepthof血etopblowingjetintheconverterQuantitativerelationsNpsbetweenmixingtimeandblowparametersandoptunumblowingcombinationsaIeobtainedTheresultsshowthatfortopblowing，thebathstirringintensitymayreachthemax

4、imumwhenthelance廿phassixnozzles，andthenozzlecoleinclodedanglebeingis175degreeForbottomblowing，thebathstirringconditionmayreachtheoptimulnwhenfourbottomblowingluyeresareposifionedevenlyOllthecircleofO43Ddiameter(2)Basedon

5、theresultsofwatermodeling，indus訂ialtestswerecarriedouttoverifytheresultsfromwatermodelandflli也groptimize0f恤waeticaloperationofthesteel—makingprocessT11eresultsshowthattheoperationdesignCase4isthebestforsmeltinghbtmetalsw

6、ithmediumphosphoruscontent(3)Apredictionmodeltopredictthephosphoruscontentcarboncontent，temperatureofsteelatendpointofsmellingisdevelopedbyregressionanalyfisofpracticalproductiondatafirmMeishanSteal，arrivingatthefollowin

7、gresults睇P】=0016I陟P置20013419瓦一0000096W蘭；：一00002767qI5，睇c】=o10871％C]：1o45101％Si]：。一1757x10“q465t33g71=o1403陬cF—o1409陟silo0001iv000017Q”07669wr2001541qt”KEYWORDS：Combinedblowingconverterwatermodelingoperationpmalneters，opt