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    A PROCESS FOR RECOVERING GOLD FROM ORES
    1.
    发明申请
    A PROCESS FOR RECOVERING GOLD FROM ORES 审中-公开

    公开(公告)号：US20190292628A1

    公开(公告)日：2019-09-26

    申请号：US16302204

    申请日：2017-05-17

    Applicant: BROMINE COMPOUNDS LTD. ,  TENOVA ADVANCED TECHNOLOGIES LTD

    Inventor： Keren LARMOUR-SHIP ,  Tal FABIAN ,  Alan MILLER ,  Sharon KRUMBEIN RUBIN ,  Elizabeta SHANDALOV ,  Mira BERGSTEIN FREIBERG

    IPC: C22B3/00

    Abstract: A process for recovering gold from a gold-containing raw material, comprising leaching the gold-containing material with an aqueous solution comprising elemental bromine and bromide source to form a pregnant leach solution with the gold dissolved therein; separating said pregnant leach solution from the gold-depleted raw material, removing elemental bromine from said pregnant leach solution, extracting the gold from the pregnant leach solution in an acidic environment into an organic extractant, to form a gold-loaded extract and bromide-containing raffmate, stripping the extract with an alkaline aqueous solution to form a gold-bearing aqueous solution, generating gold (Au0) and treating bromide-containing stream(s) to produce recyclable elemental bromine.

    Process for Producing Lithium Salts
    3.
    发明公开
    Process for Producing Lithium Salts 审中-公开

    公开(公告)号：US20230175100A1

    公开(公告)日：2023-06-08

    申请号：US18103075

    申请日：2023-01-30

    Applicant: Tenova Advanced Technologies Ltd.

    Inventor： Mark Stephen JABLONKA ,  Ziv DEE NOOR ,  Hani AHARON

    IPC: C22B26/12 ,  C22B3/08 ,  C25D1/02

    CPC classification number: C22B26/12 ,  C22B3/08 ,  C25D1/02

    Abstract: A process for producing a purified aqueous lithium (sulfate) solution including: processing a lithium-containing raw material to produce a crude aqueous solution containing lithium sulfate; contacting the crude solution with an organic medium, in an extraction step to produce a lithium-loaded organic medium and a raffinate; stripping said lithium-loaded organic medium by means of an aqueous acid stripping solution (e.g., sulfuric acid), to extract the lithium cations from the lithium-loaded medium, to produce: the purified aqueous lithium (sulfate) solution and a stripped organic medium; separating the purified lithium solution from the stripped organic medium; recycling the stripped organic medium to the extraction step, the organic medium including the stripped organic medium; subjecting the raffinate to electrolysis to produce: an alkali (sodium) hydroxide solution contaminated with lithium and a sulfuric acid stream; and recycling the alkali hydroxide and sulfuric acid streams for use within the process.

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