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《還原—銹蝕法提取紅土鎳礦中鎳鈷的工藝分析》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、中南大學(xué)碩士學(xué)位論文ABSTRACTThethesisdemonstratesasimplewaytoprocesstheoverseaslateriteviareduction—corrosionmethod，whichcanremovetheironwhenextractingthenickelandcobaltinthelaterite，resultingintheseparationofNiandCofromFeInthistext，theprincipleofthecorrosionmethod，th
2、eeffectofthepre—reductiontreatmentforlateriteoncorrosionprocess，andthecorrosionbehaviorofreductive—IateritearestudiedThethermodynamicanalysisofthetreatmentonreductive—lateriteusingcorrosionmethodwereinvestigated，theresultsshowthat，the11ickelandcobarcanbetran
3、sferredintoNi”andCo“whiletheironcanbetransferredintoFeOOHbycontrollingthepotentialandpHofthesolutionThelateritewereprocessedbythechloridesegregationmethodanddirectreductionmethod，respectivelyTheresultsshowthatafterheatingfor90minunder1000℃usingchloridesegreg
4、ationmethod，themetallizationratioofFe．NiandCointhereductive—lateriteare844％．96％and933％．respectivelyAfterthetreatmentonthereductive—lateritebycorrosionprocess，theleachingefficiencyofFe，NiandCoare88％，92．3％and83l％．respectivelyafterheatingfor60minunder1100'C，mix
5、edwith6％coke．themetallizationratioofFe．NiandCointhereductive—lateriteare758％．893％and873％．respectivelyAfterthetreatmentonthereductive—lateritebycorrosionprocess，theleachingefficiencyofFe，NiandCoare6．9％，864％and686％，respectivelyThecorrosionbehaviorofreductive-l
6、ateritewasstudied，takingthelateriteprocessedbychloridizingsegregationprocessasrawmaterialsTheresultsshowthat：(1)Undertheconditionsofacidtooreratio010，gasflowrate5×103Lmin1m一，leachingtemperature80'C，leachingtime8h，stirringspeed300rmin～，liquidtosolidratio10，le
7、achingefficiencyofFe，NiandCoare99％．909％and802％．respectively(2)ThekineticsanalysisoftheleachingbehaviorofnickelshowsthattheleachingleactionofnickelwascontrolledbytheinterfacialchemicalreactionAndtheactivationenergyis3101kJmol～中南大學(xué)碩士學(xué)位論文(3)Thepureoxygencallenh
8、ancerustingactionUnderthecaseofinlettingthepureoxygen，theleachingefficiencyofFe，NiandCoarerespectively99％，952％and863％whentherustingactionlastsfor4hAndtheleachingbehaviorofnickelwillstopafterther
