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公开(公告)号：US11873539B2
公开(公告)日：2024-01-16
申请号：US17977459
申请日：2022-10-31
Applicant: HATCH LTD.
Inventor： Robert John Fraser , Jacqueline Fossenier , Maryam Neisani , Louiza Kahina Harkouk , Amir Mohammad Nazari , Fangyu Liu
CPC classification number: C22B23/06 , C22B23/043 , C22B23/0461
Abstract: Processes and methods for refining ferronickel alloy, and producing nickel sulfate or other nickel product, are provided, where the ferronickel alloy is treated with an oxidizing leach. The oxidizing leach may be, for example, a pressure oxidation (POX) leach or a leach with peroxide or copper (II) ions. The treatment may be in the presence of added copper, such as by providing a copper sulfate solution. Producing nickel sulfate may comprise removing copper and iron after the leach, removing impurities, and either crystallizing the nickel sulfate or precipitating/winning another nickel product.
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公开(公告)号：US10995014B1
公开(公告)日：2021-05-04
申请号：US17066769
申请日：2020-10-09
Applicant: Hatch Ltd. , Northvolt AB
Inventor： Robert John Fraser , Evangelos Stamatiou , Mark Joseph Machado , Henry Christian Immo von Schroeter , Mahmood Alemrajabi
Abstract: A process for generating a metal sulfate that involves crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor with uncrystallized metal sulfate remaining in the mother liquor; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. So crystallized, the generated metal sulfate may be battery-grade or electroplating-grade.
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公开(公告)号：US20230046474A1
公开(公告)日：2023-02-16
申请号：US17979502
申请日：2022-11-02
Applicant: HATCH LTD.
Inventor： Robert John Fraser , Andrew Doolittle , Alexander Sutherland , Adam Best , Firsya Risandi
IPC: C01G53/10
Abstract: A process for removing impurities from a crystallized metal sulfate, including contacting crystallized metal sulfate with a liquor rich in metal sulfate. The metal may be cobalt, nickel, or manganese, and the impurities may be magnesium or calcium. The liquor rich in metal sulfate may be an overflow liquor from crystallization of the metal sulfate, and said overflow liquor may be subject to one or more impurities removal steps prior to contacting the crystallized metal sulfate, such that the overflow liquor contains lower levels of impurities than the crystallized metal sulfate to be contacted. A counter-current wash circuit may be used to remove impurities from a crystallized metal sulfate, whereby a plurality of washing tanks are configured to receive crystallized metal sulfate in a sequence, and washing liquor in reverse of said sequence.
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Patent Agency Ranking
公开(公告)号：US20240035112A1
公开(公告)日：2024-02-01
申请号：US17979350
申请日：2022-11-02
Applicant: HATCH LTD.
Inventor： Tom Plikas , Amreen Khera , Majid Maleki , Dylan Van den Berg , Robert John Fraser
CPC classification number: C22B3/02 , C22B3/08 , C22B23/043
Abstract: A metal-dissolving apparatus and process is disclosed. The apparatus comprises a reactor, a metal inlet for receiving a metal-containing substance, a solution inlet for receiving a metal-dissolving solution, a solution outlet for providing the metal-dissolving solution comprising dissolved metals. The apparatus comprises a length and a height, the height being less than the length. The process comprises providing a metal-dissolving solution into a first location of a reactor comprising metal-containing substances, flowing the metal-dissolving solution through the reactor, dissolving metal from the metal-containing substances into the metal-dissolving solution, and discharging the metal-dissolving solution from the reactor.
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公开(公告)号：US20230052881A1
公开(公告)日：2023-02-16
申请号：US17977523
申请日：2022-10-31
Applicant: HATCH LTD.
Inventor： Robert John Fraser , Evangelos Stamatiou
Abstract: A process for battery chemical production, where a sodium sulfate stream is treated with an ion exchange process to provide potassium sulfate and sodium chloride. The sodium chloride may be treated with a chlor-alkali to produce sodium hydroxide for use upstream in the battery chemical production process.
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公开(公告)号：US12054401B2
公开(公告)日：2024-08-06
申请号：US17222264
申请日：2021-04-05
Applicant: Hatch Ltd. , Northvolt AB
Inventor： Robert John Fraser , Evangelos Stamatiou , Mark Joseph Machado , Henry Christian Immo von Schroeter , Mahmood Alemrajabi
CPC classification number: C01G53/10 , C01G45/10 , C01G51/10 , C22B7/007 , C22B23/0415 , C22B26/12 , H01M10/0525 , H01M10/54
Abstract: A process for generating a metal sulfate that involves crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor with uncrystallized metal sulfate remaining in the mother liquor; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. So crystallized, the generated metal sulfate may be battery-grade or electroplating-grade.
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7.发明公开公开(公告)号：US20230193423A1
公开(公告)日：2023-06-22
申请号：US17977459
申请日：2022-10-31
Applicant: HATCH LTD.
Inventor： Robert John Fraser , Jacqueline Fossenier , Maryam Neisani , Louiza Kahina Karkouk , Amir Mohammad Nazari , Fangyu Liu
CPC classification number: C22B23/06 , C22B23/043 , C22B23/0461
Abstract: Processes and methods for refining ferronickel alloy, and producing nickel sulfate or other nickel product, are provided, where the ferronickel alloy is treated with an oxidizing leach. The oxidizing leach may be, for example, a pressure oxidation (POX) leach or a leach with peroxide or copper (II) ions. The treatment may be in the presence of added copper, such as by providing a copper sulfate solution. Producing nickel sulfate may comprise removing copper and iron after the leach, removing impurities, and either crystallizing the nickel sulfate or precipitating/winning another nickel product.
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公开(公告)号：US20230048939A1
公开(公告)日：2023-02-16
申请号：US17979410
申请日：2022-11-02
Applicant: HATCH LTD.
IPC: C01G53/10
Abstract: A process and method for producing a crystallized metal sulfate. The crystallized metal sulfate may be battery-grade. The method may comprise receiving a metal ion-containing stream and crystalizing a metal sulfate from the stream. The process may comprise receiving a stream from a metal processing plant, and crystalizing a metal sulfate from the stream. The process may be a metal electrowinning process comprising crystalizing a metal ion-containing stream to form a crystallized metal sulfate in a mother liquor. The process or method may comprise returning the mother liquor upstream or to the metal electrowinning process.
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