METHOD OF MANUFACTURING INORGANIC ION EXCHANGER FOR SELECTIVE EXTRACTION OF LITHIUM FROM LITHIUM-CONTAINING NATURAL AND TECHNOLOGICAL BRINES

    公开(公告)号:US20250034675A1

    公开(公告)日:2025-01-30

    申请号:US18225373

    申请日:2023-07-24

    Abstract: A method of manufacturing an inorganic ion exchanger for the selective extraction of lithium from lithium-containing natural and technological brines is performed by interacting at least one soluble niobium(V) compound with an acid that contains at least one iron(III) compound, thus forming an electrolyte that contains a hydrated niobium(V) oxide and a hydrated iron(III) oxide, which co-precipitate and form a precipitate of a mixed hydrated niobium(V) and iron(III) oxide. The precipitate is washed, an excess of the electrolyte is removed, and the product is granulated with subsequent conversion into a lithium form, which is calcined and is converted to an H-form of the inorganic ion exchanger by treating thereof with an acid solution. the addition of Fe3+ ions contained in the iron(III) compound to the sorbent composition allows obtaining inorganic ion-exchange sorbents with a specific structure, which provides high selectivity, especially for lithium ions.

    Ion lithium extraction apparatus
    79.
    发明授权

    公开(公告)号:US11638916B1

    公开(公告)日:2023-05-02

    申请号:US17959086

    申请日:2022-10-03

    Abstract: Improvements in a lithium-ion extraction apparatus to extract lithium-ion from water and more specifically salt or brine water. The extraction of lithium-ion utilizing electromagnetic separation into a sorbent shortens the extraction time and minimizes environmental impact. The sorbent is typically a polymer that is in solution with the brine where direct contact with the brine water with the sorbent extracts lithium-ions. The fixed and magnetic field magnetic field increases the absorption in the sorbent by energizing the sorbent. The sorbent is in the form of porous beads that have selective lithium-ion affinity in a continuous solid-phase extraction process. The lithium-ion extraction apparatus includes fluid flow, agitation, pressure, and temperature control of the brine solution. The flow rate alters and controls the dwell time that the brine solution is in proximity to the electromagnets.

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