公开(公告)号：US11618934B2

公开(公告)日：2023-04-04

申请号：US16758192

申请日：2018-03-14

申请人： TECK METALS LTD.

发明人： Hector Lizama ,  Danilo Arrué

IPC分类号： C22B15/00 ,  C22B3/08 ,  C22B3/18 ,  E21B34/02 ,  E21B43/28 ,  E21B43/30 ,  E21B47/00 ,  E21B49/00 ,  G01V3/00 ,  C22B3/26

摘要： A process for recovering copper from heap leach residues containing residual copper, includes identifying a production zone within the heap leach residues for secondary leaching, drilling wells into the heap at locations suitable for delivering leach solution into the production zone, injecting the leach solution including ferric ions through the wells and aerating the production zone to facilitate oxidative reactions within the production zone, and collecting effluent from the heap for copper recovery therefrom.

公开(公告)号：US11584975B1

公开(公告)日：2023-02-21

申请号：US17458203

申请日：2021-08-26

申请人： Sherritt International Corporation

发明人： Preston Carl Holloway ,  Jan Tjeerd Smit ,  Aysan Molaei

IPC分类号： C22B15/00 ,  C22B1/02 ,  C22B30/04 ,  C22B3/08

摘要： An integrated pressure leaching, heap leaching process for recovering copper from sulphidic feed containing iron, arsenic, and copper. Aqueous feed slurry of the sulphidic feed is pressure oxidized to form a liquid phase containing free sulphuric acid and aqueous copper sulphate, and to precipitate arsenic as solid iron arsenic compounds. Treated slurry is withdrawn from the pressure vessel and the liquid phase is separated from the solids. Copper is recovered from the separated liquid phase and generates a solution enriched in acid and depleted in copper. At least a portion of this solution is neutralized in a copper heap leach to produce a PLS containing copper and reduced in acid. At least a portion of the heap leach PLS is neutralized to produce a solution further reduced in acid, and solids containing copper precipitates, followed by a liquid solid separation.

公开(公告)号：US20220267879A1

公开(公告)日：2022-08-25

申请号：US17743385

申请日：2022-05-12

申请人： BEIJING UNIVERSITY OF TECHNOLOGY

发明人： Yufeng WU ,  Jiewen YAN ,  Bin LI

IPC分类号： C22B3/00 ,  C22B15/00 ,  C22B11/00 ,  C22B7/00

摘要： The invention discloses Method for whole component microwave fast digestion and precious metal extraction from ionic liquid of waste circuit board, and belongs to the field of hydrometallurgy. Based on the theory that microwaves can directly penetrate through a leaching medium to directly heat a circuit board, microwave-assisted leaching can reinforce mass transfer and heat transfer in the traditional leaching process, the leaching time is greatly shortened, and the leaching efficiency is improved. Before leaching, a waste circuit board does not need to be smashed, and environmental protection is achieved while energy is saved. The temperature rising process and reaction time of the reaction can be controlled, the whole process is conducted under the airtight condition, heat loss in the leaching process is avoided, the valuable leaching rate is high, the selectivity is high, and efficient leaching of valuable metal can be achieved. Precious metal leachate is extracted through imidazolium ionic liquid, the selectivity of the imidazolium ionic liquid to gold is high, and the co-extraction phenomenon of gold, nickel, copper and other ions is avoided. The method for extracting the precious metal leachate through ionic liquid is a green and clean recycling method, and the overall recycling rate of gold, nickel and copper can reach 99% or above

公开(公告)号：US20220259695A1

公开(公告)日：2022-08-18

申请号：US17733171

申请日：2022-04-29

申请人： FREEPORT MINERALS CORPORATION

发明人： John Warren Dean, JR. ,  Christopher Wooten ,  Chase Zenner

IPC分类号： C22B7/00 ,  C22B3/04 ,  C22B15/00

摘要： Various embodiments provide a leaching solution monitoring module comprising a first leaching solution distribution system interface, a flow meter in fluid communication with the first leaching solution distribution system interface, the flow meter in fluid communication a 3-way pressure regulator, and a second leaching solution distribution system interface in fluid communication with the 3-way pressure regulator.

公开(公告)号：US20220136080A1

公开(公告)日：2022-05-05

申请号：US17434224

申请日：2020-02-21

申请人： Francesca GIULIANO

发明人： Gaetano FRISI

IPC分类号： C22B11/00 ,  C22B15/00 ,  C22B3/10 ,  C22B3/06

摘要： A method for recovering gold from electronic components includes a first macro-step of dissolving gold and copper from the electronic components using an aqueous solution comprising HNO3 concentrated in a percentage varying from 28% to 38% and concentrated HCl in a percentage varying from 15% to 25%. A second macro-step includes adding KOH to the obtained solution to bring it to a pH between 0.5 and 0.9. A third macro-step includes adding to the solution obtained in the second macro-step an amount of ascorbic acid dissolved in water equal to the amount of gold hypothetically present in a sample of the first macro-step, multiplied by a factor ranging between 1.5 and 3, causing precipitation of gold, which is separated from the solution and made available in powder form in a fourth macro-step.

公开(公告)号：US20220065532A1

公开(公告)日：2022-03-03

申请号：US17418763

申请日：2019-12-04

申请人： REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG

发明人： Bojan Zivanovic

IPC分类号： F27B3/14 ,  F27D1/00 ,  F27D1/12 ,  F27D9/00 ,  C22B15/00 ,  C22B5/02

摘要： The invention relates to a metallurgic furnace, in particular a metallurgic furnace for receiving a molten metal.

公开(公告)号：US20220017989A1

公开(公告)日：2022-01-20

申请号：US17414831

申请日：2019-12-03

申请人： A.C.N. 630 589 507 PTY LTD

发明人： Gavin Beer ,  Mark Daniel Urbani

IPC分类号： C22B7/00 ,  C22B1/00 ,  C22B3/08 ,  C22B26/12 ,  C22B15/00 ,  C22B3/00 ,  H01M10/54

摘要： A method for the recovery of metals from a feed stream containing one or more value metals and lithium, the method comprising: subjecting the feed stream to a sulphuric acid leach to form a slurry comprising a pregnant leach solution of soluble metal salts and a solid residue; separating the pregnant leach solution and the solid residue; subjecting the pregnant leach solution to one or more separate solvent extraction steps, wherein each solvent extraction step recovers one or more value metals from the pregnant leach solution, the remaining pregnant leach solution comprising lithium; and recovery of lithium from the pregnant leach solution.

公开(公告)号：US11193184B2

公开(公告)日：2021-12-07

申请号：US16283605

申请日：2019-02-22

申请人： CDA Research Group, Inc.

发明人： Dominic C. Abbott ,  ChunLim Abbott

IPC分类号： C22B15/00 ,  C22B3/22 ,  C22B3/02

摘要： Provided herein is a system for producing suspensions comprising soluble metal ions. The system comprises a basket to hold a metal load comprising a permeable floor so as to allow a solution to come into contact with the metal load. The system further comprises a vessel within which the solution and the basket may be maintained while metal ions are leached from the metal load into the solution. Some embodiments of the present disclosure pertain to a system used to produce a suspension comprising copper ions. Additionally, provided herein are methods of using the system to produce suspensions comprising soluble metal ions. Some embodiments of the present disclosure pertain to methods of making suspensions comprising copper ions. The resultant suspensions comprising metal ions may be further modified to supply a pharmaceutically acceptable treatment.

公开(公告)号：US20210363606A1

公开(公告)日：2021-11-25

申请号：US16771368

申请日：2018-12-11

申请人： METALLO BELGIUM

发明人： Bert Coletti ,  Jan Dirk A. Goris ,  Yves De Visscher ,  Charles Geenen ,  Walter Guns ,  Niko Mollen ,  Steven Smets ,  Andy Breugelmans

IPC分类号： C22B15/00 ,  C22B5/02 ,  C22B7/04 ,  C22B13/02 ,  C22B25/06 ,  C22C13/00 ,  C22C9/08 ,  B23K35/30

摘要： A process for the production of a crude solder composition includes the provision of a first solder refining slag that includes tin and/or lead. The process further includes the steps of partially reducing the first solder refining slag, thereby forming a crude solder metal composition and a second solder refining slag, followed by separating the second solder refining slag from the crude solder metal composition, and partially reducing the second solder refining slag, thereby forming a second lead-tin based metal composition and a second spent slag followed by separating the second spent slag from the second lead-tin based metal composition A copper containing fresh feed is added to step (ii), preferably before reducing the second solder refining slag.

公开(公告)号：US20210347651A1

公开(公告)日：2021-11-11

申请号：US16994625

申请日：2020-08-16

申请人： Scandium International Mining Corp.

发明人： Willem P.C. Duyvesteyn

IPC分类号： C01F11/46 ,  C22B3/08 ,  C22B3/42 ,  C22B15/00 ,  B01J47/026

摘要： A method for extracting copper values from a low grade copper ore feedstock is provided. The method includes (a) providing an ore feedstock of a copper oxide ore; (b) subjecting the ore to at least one process selected from the group consisting of primary crushing processes and secondary crushing processes; (c) subjecting the ore feedstock to high pressure grinding roll crushing, thereby obtaining a crushed ore; (d) subjecting the crushed ore to acid curing, thereby obtaining a cured ore; (e) subjecting the cured ore to vat or heap leaching, thus yielding a leachate; (f) passing the leachate through a first ion exchange resin which is selective to base metals plus copper, thereby removing a portion of the copper values from the leachate and yielding a first loaded resin and a first treated leachate; (g) stripping base metals plus copper values from the first loaded resin with a first stripping solution, thereby yielding a base metals plus copper-loaded stripping solution; (h) selectively extracting copper values from the copper-loaded stripping solution via solvent extraction, thereby obtaining an extract and a raffinate; and (i) crystallizing a copper salt from the extract, thereby obtaining a crystallized copper salt.