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    Process for metal extraction with sorption leaching in wet solids
    31.
    发明授权
    Process for metal extraction with sorption leaching in wet solids 有权

    公开(公告)号：US10358692B2

    公开(公告)日：2019-07-23

    申请号：US15521306

    申请日：2015-10-16

    申请人： INNOVECO AUSTRALIA PTY. LTD. ,  ORYXEIO INGENIERÍA LIMITADA

    发明人： Hans Christian Hein ,  Pavel Spiridonov ,  Ricardo Oliver Hein Hoernig

    IPC分类号： C22B3/42 ,  C22B1/00 ,  C22B3/06 ,  C22B3/12 ,  C22B3/24 ,  C22B3/04

    摘要： A hydrometallurgical process is provided for the selective extraction of one or more target metals from ore, concentrates, tailings, slags or other metal bearing solids, by combining simultaneously leaching with sorption in the state of wet solids. The sorption and leaching are performed simultaneously, which reduces the required number of process stages in comparison to conventional technologies. Performing the sorption leaching in wet solids enables a significant increase in the concentration of leaching agents in relation to target metal(s) content in solids, at the same addition rate of said leaching agents, improving thermodynamic conditions and leaching kinetics for dissolving target metal(s). The invention has the main advantage of improving metal recoveries at a reduced consumption rate of leaching agents.

    SYSTEMS AND METHODS FOR IMPROVEMENT OF METAL RECOVERY AND STABILITY OF PILES
    32.
    发明申请
    SYSTEMS AND METHODS FOR IMPROVEMENT OF METAL RECOVERY AND STABILITY OF PILES 审中-公开

    公开(公告)号：US20190032169A1

    公开(公告)日：2019-01-31

    申请号：US16049681

    申请日：2018-07-30

    申请人： DIFFERENTIAL ENGINEERING INC.

    发明人： Thomas Joseph SEAL

    IPC分类号： C22B3/02 ,  C22B3/04

    摘要： In embodiments, pressurized fluid containing reagents of formulated mixtures of solids, liquids and gasses are delivered into a cased well then into the heap or pile to open or stimulate new horizontal and vertical fluid pathways, channels, plus drains from the open bottom of the well to the bottom of the heap or pile for fluid collection. This delivery method may also drain any fluids that are retained and pooled in the heap or pile. The removal of pooled fluids will increase the inter-particle cohesion and friction in the heap or pile, thus adding geotechnical stability and resistance to movement of the heap or pile. The cased wells may also add shear strength to the collective to retard movement of the heap or pile.

    Beneficiation of Values from Ores with a Heap Leach Process
    35.
    发明申请
    Beneficiation of Values from Ores with a Heap Leach Process 审中-公开

    公开(公告)号：US20180369869A1

    公开(公告)日：2018-12-27

    申请号：US15980462

    申请日：2018-05-15

    申请人： Anglo American Services (UK) Ltd

    发明人： Anthony Owen Filmer ,  Daniel John Alexander

    IPC分类号： B07B15/00 ,  B03D1/06 ,  B02C23/14 ,  B07B13/04 ,  C22B3/04

    摘要： This invention relates to a process for recovering value metals from sulphide ore, including steps of crushing ore in a primary crusher (14) to a size of about 40 cm and less, passing the crushed ore through one or more of the following pre-beneficiation processes such as bulk sorting (16) and screening (20) followed by coarse floatation (46/50), or gravity separation or magnetic separation. A waste stream (54) from the pre-beneficiation process/es with a particle size greater than 100 μm is stacked in a heap (26) and subjected to a heap leach. This integrated process utilises the pre-beneficiation techniques best suited to the characteristics of a particular orebody; and during the pre-beneficiation simultaneously creating a low grade stream that yields significantly higher recoveries than achievable by normal heap leaching of low grade run of mine ore.

    PROCESS FOR METAL EXTRACTION WITH SORPTION LEACHING IN WET SOLIDS
    40.
    发明申请
    PROCESS FOR METAL EXTRACTION WITH SORPTION LEACHING IN WET SOLIDS 审中-公开

    公开(公告)号：US20170306440A1

    公开(公告)日：2017-10-26

    申请号：US15521306

    申请日：2015-10-16

    申请人： INNOVECO AUSTRALIA PTY. LTD. ,  ORYXEIO INGENIERÍA LIMITADA

    发明人： Hans Christian HEIN ,  Pavel SPIRIDONOV ,  Ricardo Oliver HEIN HOERNIG

    IPC分类号： C22B3/42 ,  C22B3/04

    CPC分类号： C22B3/42 ,  C22B1/00 ,  C22B3/04 ,  C22B3/06 ,  C22B3/12 ,  C22B3/24 ,  Y02P10/234

    摘要： A hydrometallurgical process is provided for the selective extraction of one or more target metals from ore, concentrates, tailings, slags or other metal bearing solids, by combining simultaneously leaching with sorption in the state of wet solids. The sorption is performed by means of sorbents such as ion exchange resins, activated carbon, zeolites, among others, and mixtures thereof. The process comprises the steps of: (a) blending the metal bearing solids with acidic or basic leaching agents, one or more sorbents, and a sufficient amount of an aqueous solution to wet substantially both the metal bearing solids and the sorbent without formation of a slurry, thereby obtaining wet solids; (b) performing sorption leaching in wet solids; (c) diluting the wet solids and preparing a pulp by adding an aqueous solution; (d) separating the loaded sorbent from the pulp; (e) eluting (desorbing) target metals from the loaded sorbent with an eluent to an eluate, returning thereafter the sorbent back to the blending step (a); and (f) recovering target metals from the eluate to obtain one or more final metal products, returning the eluent back to the elution step (e). The invention has the main advantage of improving metal recoveries at a reduced consumption rate of leaching agents.