鐵氧化物-碳混合物還原的熱分析質(zhì)譜研究及熱分析動力學(xué)解析.pdf

1、遼寧科技大學(xué)碩士學(xué)位論文鐵氧化物碳混合物還原的熱分析質(zhì)譜研究及熱分析動力學(xué)解析姓名：李金蓮申請學(xué)位級別：碩士專業(yè)：鋼鐵冶金指導(dǎo)教師：汪琦馬興亞20080322遼寧科技大學(xué)碩士學(xué)位論文AbswaetABSTRACTTheironore—coalpelletorblockisappliedsuccessfullyintheblast—furnaceandinthenon—blast—furnaceironmakingStduyofMecha

2、nismandKinemicsofironoxides／carboncompositeshavetheoreticalvalueandapplicablevalueInreductionprocessofironoxide／carboncomposites，thereductionprocessiscoupledly’completedbythereductionofironoxide／carbonandcarbongasificati

3、ontwogas—solidreactions。Astofindoutthemechanismofreationsofironoxide／carboncomposites，ThermalanalysismassspectrometryexperimentaltechniqueisusedtostdudyitTheexperimentalofcarbongasificationandthereductionofironoxide／carb

4、oncompositesiscarriedoutThemainachievementsandconclusionsaregivenasfollows：(1)Thecarbongasificationreactioniscompositedoftheslowgasificationstageandthequickgasificationstage，thereislittleheatintheslowgasificationstage，th

5、ereismuchheatinthequickgasificationstage(2)Thereductionofironoxideandcarboniscompositedofthreestagesinironoxideandcarboncomposites，thefirststageisthereductionprocessofhematitetomagnetite，andtheevolvedgasiscarbondioxide；t

6、hesecondstageisthereductionprocessofmagnetitetowustite，andtheevolvedgasarecarbondioxideandcarbonmonoxidethatgraduallycomeintobeinganditsdensitygraduallyincreases；thelaststageisthereductionprocessofwustitetoiron，andtheevo

7、lvedgasarecarbondioxideandcarbonmonoxide；BasedontheexpressionofArrheniusdifferentialactivationenergy，themathematicalexpressionofnon—isothermaldifferentialactivationenergyisF—FF—dln(騫)RdInf(口)RE5巨0t腫2一—灰Fr—麗筍尹Theapparenta