Patent Lithium Extraction with coated ion exchange particles

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Patent Lithium Extraction with coated ion exchange particles ( patent-lithium-extraction-with-coated-ion-exchange-particles )

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33 34 treatedagainwithacidtoyieldlithiumionsinsolution.The porousbeadsaresubmergedinaqueousorothersolutions, theporesareinfiltratedwiththesolutions.Thebeadshave adistributionofshapesthatareaproximatelysphericalon US 10,695,694B2 hydrogenandlithiumrespectivelytoandfromtheactive N-methyl-2-pyrolidone(NMP)toformasolution.This materialwhileprovidingaprotectivebarierthatlimits solutionisthenmixedwiththecoatedionexchangeparticles disolutionofmanganeseandoxygenfromtheactivemate toformaslury.Thesluryisdripedintoanaqueous rial.Thesolutioniscolectedforelementalanalysisto solutiontoformbeads.Theporousbeadsarecomprisedof measurelithiumyield. 5 10wt.%polyvinylidenefluoridematrixand90wt.%coated Aftertreatmentinacid,theprotonatedcoatedion ionexchangeparticles.Theporousbeadshaveanaverage exchangeparticlesaretreatedwithbrinewhereinthecoated diameterof2mmandaporosityof35%. ionexchangeparticlesabsorblithiumionswhilereleasing Theporousbeadscontainporeswithadistributionofpore hydrogenions.Thecoatedionexchangeparticlesarecon sizesprovidingdifusionchanelsfromthebeadsurfaceinto verted from a protonated state to a lithiated state. The 10 thebead interiorand totheionexchangeparticles.When the solution iscolected forelementalanalysistomeasure lithiumuptake. The lithiated coated ion exchange particles are then cycleofprotonationandlithiationisrepeatedtoextract15averagewitha1mmaveragediameter. lithium ionsfrom thebrineandyieldaLiClsolution. Thebrineisanaqueouschloridesolutioncontaining10 Disolutionanddegradationoftheactivematerialinacidis ppmLi,40,0ppmNa,30,0ppmCa,and3,0ppm limitedduetothecoatingprovidingaprotectivebarier. Mg.TheporousbeadsaretreatedwithHClacidtoyield Disolutionoftheactivematerialismeasuredthrough LiClinsolution.1gofthebeadsarestiredin30mLof1 elementalanalysisoftheacidsolutionfolowingstiring. 20MHClacidfor4hoursatromtemperature.Theporesin thebeadsalowtheacidsolutiontopenetrateintothebead Example5–UseofCoatedIonExchangeParticles andacestheionexchangeparticles.Therefore,theion exchangeparticlesabsorbhydrogenionsfromtheacidwhile releasinglithiumionsintotheacid.TheLiMn012ofthe Lithium was extracted from a brine using coated ion 25 coated ion exchange particles in the porous beads is con exchangeparticles(Li,TiOz/SiO2).Thebrinewasanaque vertedtoaprotonatedstateLi4-HMn2012wherexmaybe oussolutioncontaining50,0pmNa,30,0pmCa, aboutto3.5.TheZrO2coatingofthecoatedionexchange 5,0pmMg,and10pmLi.Thecoatedionexchange particlesalowsdifusionofhydrogenionsandlithiumions particlesweretreatedwithHClacidtoyieldLiClinsolu respectivelytoandfromtheionexchangematerialwhile tion.Duringacidtreatment,thecoatedionexchangepar-30providingaprotectivebarierthatlimitsdisolutionof ticlesabsorbedhydrogenionswhilereleasinglithiumions. manganeseandoxygenfromtheionexchangematerial. TheLiTiO3activematerialwasconvertedtoaprotonated After4hoursofstiring,thesolutioniscolectedfor state.TheSiO2coatingaloweddifusionofhydrogenions elementalanalysistomeasurelithiumyield. andlithiumionsrespectivelytoandfromtheactivematerial Aftertreatmentinacid,theprotonatedporousbeadsare whileprovidingaprotectivebarierthatlimiteddisolution35treatedwithbrinewhereinthecoatedionexchangeparticles oftitaniumandoxygenfromtheactivematerial.Thesolu absorblithiumionswhilereleasinghydrogenions.The tionwascolectedforelementalanalysistomeasurelithium protonatedporousbeadsarestiredin50mLofbrinefor yield.FIG.4.depictstheefectofthecoating,whichlimits 4hoursatromtemperature.Theporesintheporousbeads disolutionofthematerialwhilealowinglithiumrelease. alowthebrinesolutiontopenetrateintotheporousbeadand Aftertreatmentinacid,theprotonated coatedion40acesthecoatedionexchangeparticles.Therefore,the exchangeparticlesweretreatedwithbrinewhereinthe coatedionexchangeparticlesabsorblithiumionsfromthe coatedionexchangeparticlesabsorbedlithiumionswhile brinewhilereleasinghydrogenionsintothebrine.The releasinghydrogenions.Theparticleswereconvertedfrom coatedionexchangeparticlesintheporousbeadsare aprotonatedstatetoalithiatedstate.Thesolutionwasthen convertedfromaprotonatedstatetoalithiatedstateLi4 colectedforelementalanalysistomeasurelithiumuptake.45 HMn3012wherexmaybeaboutto2.After4hoursof Thelithiatedcoatedionexchangeparticleswerethen stiring,thesolutioniscolectedforelementalanalysisto treatedagainwithacidtoyieldlithiuminsolution.Thecycle measurelithiumuptake. ofprotonationandlithiationwasrepeatedtoextractlithium Thelithiatedporousbeadsarethentreatedagainwithacid ionsfromthebrineandyieldaLiClsolution.Disolution toyieldlithiumionsin.Thecycleofprotonationand anddegradationoftheactivematerialinacidwaslimited50lithiationisrepeatedtoextractlithiumionsfromthebrine duetothecoatingprovidingaprotectivebarier.Disolution andyieldaLiClsolution.Theporesintheporousbeads oftheactivematerialwasmeasuredthroughelemental facilitatepenetrationoftheacidandbrinesolutionsintothe analysisoftheacidsolutionfolowingstiring. porousbeads,facilitatingabsorptionandreleaseoflithium ionsandhydrogenionsbythecoatedionexchangeparticles Example6—UseofPorousBeadsContaining 5(Li_Mn3012/ZrO2)intheporousbead.Disolutionand CoatedIonExchangeParticles(LiMn,01/ZrO2) degradationoftheactivematerialinacidislimiteddueto theZrO2coatingprovidingaprotectivebarier.Disolution Lithiumisextractedfromabrineusingporousbeads.The oftheactivematerialismeasuredwithelementalanalysisof porousbeadsarecomprisedofcoatedionexchangeparticles theacidsolutionfolowingstiring. (LiMn012/ZrO2)andapolymermatrix.Thecoatedion60 exchangeparticlesarecomprisedofaLiMn012witha Example7–UseofPorousBeadsContaining ZrO2coating.Theionexchangeparticlescontain95wt% CoatedIonExchangeParticles(LiMn3012/ZrO2) (LiTiOz/SiO2) LiMn2012and5wt%ZrO2.Theparticlesareaproxi matelysphericalwithameandiameterof2microns,andthe inaColumn coatingthicknesisaproximately12nm.Thepolymer65 Lithiumisextractedfromabrineusinganionexchange matrixiscomprisedofpolyvinylidenefluoride.Theporous columnloadedwithporousbeadscontainingcoatedion beadsarecreatedbydisolvingpolyvinylidenefluoridein exchangeparticles(LiMn012/ZrO2).

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