METHODS AND SYSTEMS FOR REDUCING MAGNESIUM IN HIGH SALINITY SALAR BRINES BY NANOFILTRATION AND FORWARD OSMOSIS

Methods and systems of lowering a concentration of divalent cations in lithium- containing brines are described. A method includes diluting saturated salar brine such that sodium chloride concentration is at most about 80% of saturation. The method also includes feeding the diluted salar brine to a...

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Main Author HERRON, John R
Format Patent
LanguageEnglish
French
Published 14.05.2021
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Abstract Methods and systems of lowering a concentration of divalent cations in lithium- containing brines are described. A method includes diluting saturated salar brine such that sodium chloride concentration is at most about 80% of saturation. The method also includes feeding the diluted salar brine to a high pressure nanofiltration system operating at pressure above about 60 bar effective to form a permeate and a concentrate. The method also includes collecting the permeate having a lower concentration of divalent cations relative to the saturated salar brine. L'invention concerne des procédés et des systèmes de diminution de concentration de cations divalents dans des saumures contenant du lithium. Un procédé consiste à diluer une saumure salaire saturée de sorte que la concentration de chlorure de sodium soit au maximum à environ 80 % de saturation. Le procédé consiste également à introduire de la saumure salaire diluée dans un système de nanofiltration haute pression fonctionnant à une pression supérieure à environ 60 bars efficace pour former un perméat et un concentré. Le procédé consiste par ailleurs à collecter le perméat ayant une concentration inférieure de cations divalents par rapport à la saumure salaire saturée.
AbstractList Methods and systems of lowering a concentration of divalent cations in lithium- containing brines are described. A method includes diluting saturated salar brine such that sodium chloride concentration is at most about 80% of saturation. The method also includes feeding the diluted salar brine to a high pressure nanofiltration system operating at pressure above about 60 bar effective to form a permeate and a concentrate. The method also includes collecting the permeate having a lower concentration of divalent cations relative to the saturated salar brine. L'invention concerne des procédés et des systèmes de diminution de concentration de cations divalents dans des saumures contenant du lithium. Un procédé consiste à diluer une saumure salaire saturée de sorte que la concentration de chlorure de sodium soit au maximum à environ 80 % de saturation. Le procédé consiste également à introduire de la saumure salaire diluée dans un système de nanofiltration haute pression fonctionnant à une pression supérieure à environ 60 bars efficace pour former un perméat et un concentré. Le procédé consiste par ailleurs à collecter le perméat ayant une concentration inférieure de cations divalents par rapport à la saumure salaire saturée.
Author HERRON, John R
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DocumentTitleAlternate PROCÉDÉS ET SYSTÈMES DE DIMINUTION DE TENEUR EN MAGNÉSIUM DANS DES SAUMURES SALAIRES À SALINITÉ ÉLEVÉE PAR NANOFILTRATION ET OSMOSE DIRECTE
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Snippet Methods and systems of lowering a concentration of divalent cations in lithium- containing brines are described. A method includes diluting saturated salar...
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PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
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Title METHODS AND SYSTEMS FOR REDUCING MAGNESIUM IN HIGH SALINITY SALAR BRINES BY NANOFILTRATION AND FORWARD OSMOSIS
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