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1、東北大學(xué)碩士學(xué)位論文選礦捕收劑對一水硬鋁石型鋁土礦溶出過程的影響姓名:尤俊華申請學(xué)位級別:碩士專業(yè):有色金屬冶金指導(dǎo)教師:畢詩文;于海燕20060201東北大學(xué)碩士學(xué)位論文AbstractEffectsofOreDressingCollectoronDiasporeBauxiteDigestionProcessAbstractThebauxiteresourcesofchinaisabundantandmostofltisdiaspore.theratioofaluminumtosiliconislesssev
2、enineightypercentbauxite.Inrecentyears,withtheexploitationmadusingofit,thebauxiteresourcesbecomefurtherpoorly.Thesinteringmethodortheconsociationmethodisthemainproducingmethodinchina,anditsenergy-consumingisthreeorfourtimesofBayermethod’s.Comparingwithotherf
3、oreigncountries.thedifferencesisgreatanditreducesthecompetitionabilityandthecontinuing—developmentabilitygreatly.Intheperiodof“nine—five”、accordingtothecharacteristicsofChinesebauxite,weexploitsuccessfullytheOredressing-Bayermethodwhichisadapttoaluminaproduc
4、ingwiththemiddling—lowratioofaluminumtosiliconbauxite.Thetechniqueinauguratesanewwayforutilizingourabundantandlow—costbauxiteresourcesreasonably,andithasimportantrealist—significationandfar-reachingstratagemsignification.Comparingwiththerawbauxite,theprepara
5、tionconcentratecontainspaucityofhumicacidorganicsubstance,besidesitalsobringinpaucityoffattyacidorganicsubstance--floating—collectorinfloatation.Thehumicacidorganicsubstance’saction,infuenceandchanginglawinBayerprocesshavebeenstudiedlargelyandprofoundlyunder
6、stoodhomeandabroad.Buttherearen’treportsaboutaction,influenceandchanginglawoffattyacidorganicsubstanceinBayerprocess.Whetherthefloating-collectorcumulatesinBayerprocess,andwhetherithaseffectsontheBayerdissolving,redmudsedimentationandsodiumaluminatesolution’
7、sinoculatingseeddecompositionisoneofthefocusproblemwhichhasbeenpaidattentiontobytheexpertsofaluminaindustry,anditisalsooneofthebigobstaclesintheindustrializationoftheOredressing-Bayermethod.Inthispaper,westudythelong-hydricarbonchainfattyacidcollectorfromthr
8、eeaspectsasfollow:Firstly,studythecollector’sinfluenceonstrippingsodiumaluminatesolution’sphysicalcharacteristicssuchasviscosity,density,electricconductivity,interracialtension;Secondly,seeabout