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METHOD FOR PRODUCING LITHIUM CARBONATE FROM LOW -LITHIUM BRINE BY SEPARATING MAGNESIUM AND ENRICHING LITHIUM TECHNICAL FIELD sucesfulindustrialproductionhasbeenreported.InChi nese invention 201210164159.8, Yuan etal.,provides a modifiedmethod forextractinglithium from lithium-con tainedbrinebymulti-stageextraction,usingamidesand 5 neutral phosphorus-oxygen compounds as an extraction agent,fericchlorideasaco-extractionagentandaliphatic hydrocarbonoraromatichydrocarbonasadilutingagent.In US 10,246,341B2 Thepresentinventionbelongstoinorganicchemistryand other invention with a Chinese aplication no. generalyrelatestoaproductionmethodforextracting 201410721174.7,Shidongetal.,hasrecentlyprovideda lithiumfromsalt-lakebrineandspecialytoamethodfor10method forrecyclinglithium extractionsystem andfor producinglithiumcarbonatefromlow-lithiumbrineby regeneratingorganicphasebyalkalisaponification.The separatingmagnesium andenrichinglithium. presentresearchgroupadoptsC104 asaco-extractagentin aChineseaplicationNo.201210143879.6,andextraction BACKGROUND is caried out in neutral aqueous solution.However at 15 present, the solvent extraction only limits to liquid-liquid Lithiuminnaturemainlyexistsasspodumene,lepidolite, extractionfrombrineandnobreakthroughchangeshave petaliteandthelikeinaformofpegmatitedeposit,salt-lake benachievedinsolventextractiontechnique. solutionandsolidmineraldeposit.Extractionoflithium fromrockmineralshasahighproductioncostsoithasbeen SUMMARY replacedbyextractionfrom salt-lakebrinesince1990s.The 20 brineofsaltlakeAtacama,saltlakeHolmbreto andsaltlake Thepresentinventionprovidesamethod forproducing Uyuniina“lithiumtriangle”areaintriplefrontierofChili, lithiumcarbonatefrombrinebyseparatingmagnesiumand ArgentinaandBolivia,hasalowcontentinmagnesiumand enrichinglithiuminaneconomicandeficientway,inorder providesanexcelentresourcewithlowmagnesiumto tosolvetheexistedtechnicalproblemsmentionedabove lithium ratio.Thisregionhasbeen aprimarymanufacture 25 aboutseparationoflithium from salt-lakebrine. location atpresent due to itssimple and economicmanu- The technical solutions to solving the problemsmen facturetechnique.Whileacharacteristicofahighmagne- tionedaboveinthepresentinventioncomprisestepsas siumtolithiumratioisshowninlithium-richlakeslocated follows: inotherregionsaroundtheworld,suchastheUSsalinelake, 1.preparationofhalidesalts:takinginsolation-condensed thedeadseainwestAsiaandthesaltlakeinQaidam Basin 30 salt-lakebrinewithahighmagnesium-lithiummassratioor inQinghaiprovince.Elementslithiumandmagnesiumare takingoldbrineextractedbypotasiumsalt,condensingthe locateddiagonalyintheperiodicaltable,presentingsimilar brinebyheatingandevaporation,separatingouthalidesalts properties.Separatinglithiumfromalargeamountofmag- containingcrystalwater;andawatercontentofthehalide nesiumsaltsisrathereconomicallydificult.Inreality, saltsis30%-60%inatotalmassofthehalidesalts; technicaldevelopmentoflithiumsaltindustrializationisstil35 2.solid-liquidextraction:extractingthehalidesaltsby inapassiveandstagnatedcondition.Extractionoflithium usingtrialkylphosphateoramixtureoftrialkylphosphate fromsalt-lakebrinewithahighmagnesiumtolithiumratio andmonohydricalcoholasanorganicphase,andamass hasalwaysbeenaproblemunsolveduntilnowandhas (kg)tovolume(L)ratioofasolid-liquidextractionphaseis drawnspecialatentioninscientificandindustrialfield. 1.0:(0.5–5.0); ThereserveoflithiumsaltinsaltlakeofQaidamBasinis40 3.solid-liquidseparation:filteringamixtureofthesolid upto18milliontons,accountingfor2%ofthetotallithium liquidextraction,andobtaininganorganicextractedphase reserveintheworld.Lithiumsalt,mainlystoredinsurface aswelasremaininghalidesaltsaftertwo-phaseseparation; brine,inter-crystalpotentialwater and porous brine in the 4. reverse extraction: reverse extracting the organic saltlakesofQarham,Yiliping,westTaijinair,eastTaijinaier extractedphasebyusingwaterasareverseextractionagent; and Daqaidam,has an extinguished exploration valueas 45 avolumeratioofwatertoliquidphaseis1.0:(0.5-10.0),and wellasawideaplicationprospect.Thereareseveralways astageofreverseextractionis1–5; ofextractinglithium.Precipitationissuitableforpreparing 5.liquid-liquidseparation:stilstandingaliquid-liquid lithiumsaltsfrombrinewithalowmagnesiumtolithium reverseextractedmixture,separatingawaterphaseafter ratio.Whileaneconomiccostisrapidlyincreasingaslong liquidlayering,obtainingenrichedLi+solutionwitha asthemassratioofmagnesium tolithium isover6,which 50 decreasedmassratioofmagnesium tolithium,andobtaining isunbeneficialtoseparationoflithiumandmagnesium.Ion aconcentratedwaterphaseafterreverseextractionby exchangeprovidessolidmaterialswithaselectiveadsorp- evaporationandconcentration; tiononLi*.Thepropertiesofsomesolidmaterialssuchas 6.removalofmagnesium byalkalization:addingsodium MnO,nanocrystal,H1.6-Li,Mn,.604lithiumionicsleve, carbonateorsodiumhydroxideintotheconcentratedwater aluminum hydroxide gelaswellassolventimpregnated 5phaseafterreverseextraction,precipitatingmagnesium car resinsareinvestigated.However,theirlithiumadsorption bonateormagnesiumhydroxide,controlingpHofasolu capacitiesarenotlargeunderneutralcondition,permeability tiontobemorethan10,precipitatingMg2+completely, ofadsorbentisbadandsolutionlosalsooccurs.Calcination separatingbyfiltration;and hasbeenapliedinpreparinglithiumcarbonatefrom old 7.preparationoflithiumcarbonate:adingsodiumcar brineofwestTaijinairsaltlakebuttheenergycostishigh 60bonateintothewaterphaseaftertheremovalofmagnesium andanequipmentiscorrodedseriously.Ionicmembrane byalkalization,producingprecipitationofthelithiumcar utilizedinelectro-osmosisisexpensiveandthemembrane bonate,filtering,dryingandobtaininglithiumcarbonate needs tobe cleaned andmaintained ata regular interval. product. TributylphosphateandFeCl,havebeenutilizedrespec- Thesolid-liquidextractioncomprises:firstextractingthe tivelyastheearliestextractionagentandtheearliestco-65halidesalts,heatingandmeltingtheremaininghalidesalts, extractionagentinsolventextraction.Asthereverseextrac- controlingthewatercontentuntilthehalidesaltscontaining tionnedstobecariedoutinstrongacidiccondition,no crystalwaterareseparatedout,adingtrialkylphosphateorPDF Image | PRODUCING LITHIUM CARBONATE FROM LOW LITHIUM BRINE
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ORC Waste Heat Turbine and ORC System Build Plans: All turbine plans are $10,000 each. This allows you to build a system and then consider licensing for production after you have completed and tested a unit.Redox Flow Battery Technology: With the advent of the new USA tax credits for producing and selling batteries ($35/kW) we are focussing on a simple flow battery using shipping containers as the modular electrolyte storage units with tax credits up to $140,000 per system. Our main focus is on the salt battery. This battery can be used for both thermal and electrical storage applications. We call it the Cogeneration Battery or Cogen Battery. One project is converting salt (brine) based water conditioners to simultaneously produce power. In addition, there are many opportunities to extract Lithium from brine (salt lakes, groundwater, and producer water).Salt water or brine are huge sources for lithium. Most of the worlds lithium is acquired from a brine source. It's even in seawater in a low concentration. Brine is also a byproduct of huge powerplants, which can now use that as an electrolyte and a huge flow battery (which allows storage at the source).We welcome any business and equipment inquiries, as well as licensing our turbines for manufacturing.| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |