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US 2022/0290272Al Sep.15,2022 PROCESSFORACQUIRINGLITHIUM FROM BRINE AND FOR RECOVERING LITHIUM WHEN RECYCLING LITHIUM IONACCUMULATORS CROSS REFERENCE TO RELATED APPLICATIONS posiblesothat,attheendoftheseparationproces, resources(andthelithiuminparticular)arepresentina relativelypurestate.Thisstepisalsoreferedtoas“recov ery”.Theeficiencyoftheseparationprocesshouldbegreat enoughthattheseparatedresourcescanbeusedtoproduce newacumulators(baterygrade). SUMMARY OF THE INVENTION [014]Theinventionconcernstherecoveryoflithium fromawateryacidicsolutionobtainedthroughhydromet alurgyandpyrometalurgy. [015] Thiswaterysolutionofsalts,whichcontains lithiumions,isalsoreferedtoas“brine”withregardtothe invention.Inparticular,groundwateranddepwateraswel asseawaterorthe“wasteproducts”ofseawaterdesalination plantsfalundertheterm “brine”inthesenseofthe invention. [016]Inordertobeabletoproducelithiumsaltsfroma brinecontainingonlyfewlithiumions(typicaly10to10 mg/L),theconcentrationthereofshouldbe15,0ppmor greater.Thereisthusgreatinterestindevelopingaproces forincreasingthelithium-ionconcentrationofthebrinetoa levelrequiredfortheproductionoflithiumsalts. [017]U.S.Pat.No.6,764,584B2describesaprocesfor theadsorptionoflithiumionsfromawaterysolution(brine) containinglithiumionsviaadsorption.Theprocescom prisesthecontactingofawaterysolutioncontaininglithium withanadsorptionagentmadefrommanganeseoxide,also containinglithium,sothatlithiumionsinthewaterysolu tionareadsorbedbytheadsorptionagent.Thebrineisthen drainedandthelithiumionsadheringtotheadsorptionagent aredesorbedbyamixtureofwaterandmuriaticacid(HCI). Thismakesitposibletoachieveanacidicsolutionwitha lithiumconcentrationofabout 150ppm.The lithium concentrationoftheacidicsolutionisthenfurtherincreased viatwo-stepelectrolysis,sothatalithiumconcentration suitableforproducinglithiumsalts,specificalyaconcen trationofabout15,0ppmormore,canbeachieved. [018] Theinventionaimstofacilitateaproceswith whichthebrineobtainedforexamplefromtherecyclingof lithiumionacumulatorscanbeefectivelyandseparatedin arelativelypurestateinacost-efectivemannerthroughthe useofconsumablematerials.Theprocesisalsosuitablefor theextractionoflithiumfrombrinesofotherorigins. [019] Theinventionachievesthiswithaprocesfor producingalithiumconcentratefrombrinecontaining lithium ions,andcomprisingthefolowingsteps: [0020] introductionofbrineintoanadsorptioncolumn thatisatleastpartialyfiledwithanadsorptionagent,so thatlithiumionsareabsorbedbytheadsorptionagent; [021] expulsionofthebrinefromtheadsorptioncolumn; [0022]introductionofaneluent(solventusedforeluting) intotheadsorptioncolumnsothatthelithiumionsadsorbed [01] Thepresentaplicationrelatesandclaimspriority toGermanPatentAplicationNos.102021105808.2,filed Mar.10,2021,and10202117319.1,filedJul.5,2021,the entiretyofeachofwhichisherebyincorporatedbyrefer ence . BACKGROUND [02] Thisinventiondescribesaprocesforacquiring/ recoveringlithiumionsfrombrineorseawaterviaadsorp tion.Thebrinemaycomefromseawaterdesalinationplants ordepgeothermalwelsormaybegeneratedduringthe recyclingoflithium-ionbateries. [03] Duetoitsadvantages,suchashighelectrical energydensity,highoperationalvoltage,alongcyclical servicelife,lackofmemoryefect,etc.,therechargeable lithiumionbatery(moreprecisely:lithiumionacumula tor)iscommonlyusedinnotebokcomputers,mobile phones, and electric cars. The demand for lithium ion acumulatorsisgrowingrapidly,especialyaselectric mobilitybecomesmorecommon.Lithiumispresentinsuch acumulatorsintheelectrodematerial(solid)andinthe electrolyte(liquid). [0004] Theacumulatorsreachtheendoftheirservicelife afterafewyearsandmustberecycled. [05] TheEuropeanUnionstipulatesbindingminimum percentagesfortherecyclingoflithiuminitsBatery Directive:atleast35%asof2026,andatleast70%in2030. [06] Therearecurentlytwoknownrecyclingtechnolo giesforlithiumionacumulators. [07] Thesearehydrometalurgyandpyrometalurgy. [0008] Inshort,hydrometalurgymeansthattheaccumu latorsaredisasembled,groundup,andthegroundmaterial issubsequentlyfiltered.Plasticsandmetalsareusualy recoveredduringthisfiltration. 1 [0009] Otherresourcescontainedwithinthegroundmate rialcanbedisolvedwithanacid(usualysulfuricacid). Thisstepisalsoreferedtoas“leaching”. [0010] Thedisolvedresourcesarenowinliquidformand shouldbeseparatedfromthisliquidasefectivelyaspos siblesothat,attheendoftheseparationproces,thelithium inparticularispresentinarelativelypurestate.Thisstepis referedtoas“separation”.Theeficiencyoftheseparation shouldbegreatenoughthattheseparatedsubstancescanbe usedtoproducenewacumulators(baterygrade). [01]Pyrometalurgymeansthattheacumulatorsare placedinafurnace.Theflamablecomponentsofthe groundmaterialburn,andvariousmetalsarerecovered. bytheadsorptionagentaredesorbed,andcharacterizedin Whatremainsisaslagcontainingthelithiumandaluminum. thattheeluent(beforeintroductionintotheadsorption a [0012]Fromthisslag,thelithiumisdisolvedwithacids, column)isamixturecontainingwaterandaceticacidand/or suchas mixtureofsulfuricandmuriaticacid,orviaa waterandsodiumperoxydisulfateand/orwaterandammo hydrothermalproces.Thisstepisalsoreferedtoas“leach ing".Lithiumispresentinthisacidic,waterysolution (brine)inanionicstate,e.g.,aslithiumsulfate. [013]Attheendofthisrecyclingproces,thedisolved resources,inparticularthelithium,arepresentinliquid form.Itshouldbeseparatedfromthisliquidasefectivelyas niumperoxydisulfate. [0023]Theuseofthesethreeluentsresultsinlesefec tivedesorptionofthelithiumionsthanwhenmuriaticacid isused;however,thedisolutionoftheadsorptionagentis multiplemagnitudeslesthanwhenmuriaticacidoran acidicsolutionbasedonmuriaticacidisused.PDF Image | Patent Process Lithium from Brine
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Product and Development Focus for Infinity Turbine
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 |