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《還原—銹蝕法提取紅土鎳礦中鎳鈷的工藝-.研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫(kù)。
1、中南大學(xué)碩士學(xué)位論文ABSTRACTThethesisdemonstratesasimplewaytoprocesstheoverseaslateriteviareduction—corrosionmethod，whichcanremovetheironwhenextractingthenickelandcobaltinthelaterite，resultingintheseparationofNiandCofromFeInthistext，theprincipleofthecorrosionmethod，theeffectofthepre—reductiontreatmentf
2、orlateriteoncorrosionprocess，andthecorrosionbehaviorofreductive—IateritearestudiedThethermodynamicanalysisofthetreatmentonreductive—lateriteusingcorrosionmethodwereinvestigated，theresultsshowthat，the11ickelandcobarcanbetransferredintoNi”andCo“whiletheironcanbetransferredintoFeOOHbycontrolling
3、thepotentialandpHofthesolutionThelateritewereprocessedbythechloridesegregationmethodanddirectreductionmethod，respectivelyTheresultsshowthatafterheatingfor90minunder1000℃usingchloridesegregationmethod，themetallizationratioofFe．NiandCointhereductive—lateriteare844％．96％and933％．respectivelyAftert
4、hetreatmentonthereductive—lateritebycorrosionprocess，theleachingefficiencyofFe，NiandCoare88％，92．3％and83l％．respectivelyafterheatingfor60minunder1100'C，mixedwith6％coke．themetallizationratioofFe．NiandCointhereductive—lateriteare758％．893％and873％．respectivelyAfterthetreatmentonthereductive—laterit
5、ebycorrosionprocess，theleachingefficiencyofFe，NiandCoare6．9％，864％and686％，respectivelyThecorrosionbehaviorofreductive-lateritewasstudied，takingthelateriteprocessedbychloridizingsegregationprocessasrawmaterialsTheresultsshowthat：(1)Undertheconditionsofacidtooreratio010，gasflowrate5×103Lmin1m一，l
6、eachingtemperature80'C，leachingtime8h，stirringspeed300rmin～，liquidtosolidratio10，leachingefficiencyofFe，NiandCoare99％．909％and802％．respectively(2)ThekineticsanalysisoftheleachingbehaviorofnickelshowsthattheleachingleactionofnickelwascontrolledbytheinterfacialchemicalreactionAndtheactivationene
7、rgyis3101kJmol～中南大學(xué)碩士學(xué)位論文(3)ThepureoxygencallenhancerustingactionUnderthecaseofinlettingthepureoxygen，theleachingefficiencyofFe，NiandCoarerespectively99％，952％and863％whentherustingactionlastsfor4hAndtheleachingbehaviorofnickelwillstopafterther
