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    Recovery of copper from chalcopyrite
    52.
    发明专利
    Recovery of copper from chalcopyrite 未知

    公开(公告)号：AU2009200400A1

    公开(公告)日：2009-02-26

    申请号：AU2009200400

    申请日：2009-02-03

    Applicant: TECH RESOURCES PTY LTD

    Inventor： GERSON ANDREA RUTH ,  THOMAS JOAN ELIZABETH ,  HARMER SARAH LOUISE ,  ESDAILE LUCY ,  SHAW RAYMOND WALTER

    IPC: C22B3/04 ,  C22B3/18 ,  C22B15/00

    Abstract: A process for recovering copper from chalcopyrite is disclosed. The process includes oxidising sulphur in chalcopyrite with a solution under predetermined contact conditions and thereby releasing at least part of the copper in the chalcopyrite into the solution as copper ions. The process includes a subsequent step of reducing sulphur in a solid product from step (a) to a minus two, ie. sulphide, valence state with a solution under predetermined contact conditions. The process further includes a subsequent step of oxidising sulphur in a solid product from step (b) with a solution under predetermined contact conditions and thereby releasing at least part of the remaining copper in the solid product into the solution as copper ions. The process further includes recovering copper from one or more of the solutions from steps (a) and (c).

    Leaching ores
    53.
    发明专利
    Leaching ores 未知

    公开(公告)号：AU2008267769A1

    公开(公告)日：2008-12-31

    申请号：AU2008267769

    申请日：2008-06-26

    Applicant: TECH RESOURCES PTY LTD

    Inventor： HOLLITT MICHAEL JOHN ,  SHAW RAYMOND WALTER ,  REES KEVIN LEE

    IPC: C22B3/08 ,  C22B3/02 ,  C22B15/00

    Abstract: A process for leaching an ore containing sulfidic copper-containing minerals includes carrying out an aerated oxidizing leach of a part of the ore and producing an acidic leach liquor containing ferrous ions, ferric ions, and copper ions in solution. The process also includes carrying out a leach of another part of the ore using the leach liquor under conditions that minimize reactions with a source of iron in the ore and producing a leach liquor containing copper ions in solution. The process further includes recovering copper from the leach liquor.

    A method of treating potash
    54.
    发明专利
    A method of treating potash 未知

    公开(公告)号：AU2008222613A1

    公开(公告)日：2008-09-12

    申请号：AU2008222613

    申请日：2008-03-06

    Applicant: TECH RESOURCES PTY LTD

    Inventor： SHAW RAYMOND WALTER ,  BATTERHAM ROBIN JOHN

    IPC: C01D3/04 ,  B01D9/00 ,  B01D61/00 ,  C01D3/06 ,  C01D3/08 ,  C01D3/14 ,  C01D3/16

    Abstract: A method of separating potassium chloride and sodium chloride from a heated solution of these salts, such as a solution obtained from potash ore, to recover potassium chloride from the ore is disclosed. The method includes a combination of steps of (a) extracting water from a heated solution containing potassium chloride and sodium chloride using a membrane system and (b) subsequently cooling the solution discharged from the membrane system, whereby steps (a) and (b) make it possible to selectively recover potassium chloride and sodium chloride from the solution.

    LIXIVIACION EN PILA
    58.
    发明专利
    LIXIVIACION EN PILA 未知

    公开(公告)号：ES2238940A1

    公开(公告)日：2005-09-01

    申请号：ES200450080

    申请日：2003-05-30

    Applicant: TECH RESOURCES PTY LTD

    Inventor： BATTHERHAM ROBIN JOHN ,  ESDAILE LUCY ,  SHAW RAYMOND WALTER

    IPC: C22B3/04 ,  C22B3/10 ,  C22B3/14 ,  C22B3/18

    Abstract: Procedimiento para la lixiviación de un valor de metal procedente de una pila de un mineral que contiene metal. El procedimiento comprende establecer un flujo descendente de un licor de lixiviación a través de una sección de la pila suministrando el licor de lixiviación en la superficie superior de la sección y permitiendo que el licor de lixiviación (que contiene valores de metal en la solución) se filtre desde una parte inferior de la sección. El procedimiento está caracterizado porque se suministra el licor de lixiviación en la superficie superior de la sección con un caudal suficiente para que el licor de lixiviación que fluye en dirección descendente sature la sección de la pila.

    HEAP LEACHING
    59.
    发明专利
    HEAP LEACHING 未知

    公开(公告)号：CA2487754A1

    公开(公告)日：2003-12-11

    申请号：CA2487754

    申请日：2003-05-30

    Applicant: TECH RESOURCES PTY LTD

    Inventor： SHAW RAYMOND WALTER ,  ESDAILE LUCY ,  BATTHERHAM ROBIN JOHN

    IPC: C22B3/04 ,  C22B3/10 ,  C22B3/14 ,  C22B3/18 ,  C22B3/06 ,  C22B3/08 ,  C22B3/12 ,  C22B3/16

    Abstract: A method of leaching a metal value from a heap of a metal-containing ore and a heap leaching operation are disclosed. The method includes establishing a downward flow of a leach liquor through a section of the heap by supplying t he leach liquor onto a top surface of the section and allowing the leach liquor (containing metal values in solution) to drain from a lower part of the section. The method is characterised by supplying the leach liquor onto the top surface of the section at a flow rate that is sufficient so that the downwardly flowing leach liquor saturates the section of the heap.

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