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1.发明公开公开(公告)号：US20240344171A1
公开(公告)日：2024-10-17
申请号：US18756430
申请日：2024-06-27
Applicant: MM Metals USA, LLC
Inventor： Daniel Shaw , Adriaan Jacobus Van Der Merwe , Ottmar Aloys Lange
CPC classification number: C22B5/04 , C21D1/74 , C21D6/002 , C21D8/1205 , C21D9/0025 , C21D9/0068 , C22B1/24 , C22C33/04 , C22C38/18
Abstract: A method and system for recovering low carbon ferrochrome from feed materials including chromite ore and aluminum granules in a chamber of an arc furnace using an aluminothermic smelting process carried out in the presence of an inert gas, e.g., Argon. The aluminothermic smelting process produces a bath of molten low carbon ferrochrome metal with molten slag floating thereon in the chamber. The molten low carbon ferrochrome metal and molten slag are extracted individually and processed to provide a solidified low carbon ferrochrome metal product and a solidified slag particles product, respectively. A method for the recirculation, recovery and reuse of the inert gas, and a system for accomplishing the recirculation, recovery and reuse of the inert gas.
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公开(公告)号：US20240332657A1
公开(公告)日：2024-10-03
申请号：US18425026
申请日：2024-01-29
Inventor： Byung-Su KIM , Jeonghyun YOO , Ji-Hyuk CHOI , Taegong RYU , Han Kwon CHANG
Abstract: The present disclosure provides a method for recycling a waste lithium ion battery, a method for smart recycling a waste lithium ion battery, and a system for smart recycling a waste lithium ion battery, comprising a partial melt separation process for lithium alloy compound formation and graphite separation, wherein the partial melt separation process comprises dry-separating a lithium alloy compound, a copper metal, an aluminum-copper alloy, and graphite from waste lithium ion battery cell shreds, discharged waste lithium ion battery cells or waste lithium ion battery cases.
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公开(公告)号：US20240301530A1
公开(公告)日：2024-09-12
申请号：US18647591
申请日：2024-04-26
Applicant: MM Metals USA, LLC
Inventor： Daniel SHAW , James SAVILLE , John WILLIAMS , Trevor N. MUSTOE
CPC classification number: C22B5/04 , C21D1/74 , C21D6/002 , C21D8/1205 , C21D9/0025 , C21D9/0068 , C22B1/24 , C22C33/04 , C22C38/18
Abstract: A method and system for recovering a high yield of low carbon ferroalloy, e.g., low carbon ferrochrome, from chromite and low carbon ferrochrome produced by the method. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.
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4.发明公开公开(公告)号：US20240158249A1
公开(公告)日：2024-05-16
申请号：US18281158
申请日：2022-03-10
Inventor： Masaru Nakamichi , Suguru Nakano , Jaehwan Kim , Taehyun Hwang
Abstract: In order to provide a novel production method that produces a solution of an inorganic substance which is poorly soluble in both a basic solution and an acidic solution, and that is highly energy efficient, a method for producing an inorganic substance solution (BeCl2 solution production method M10) includes: a heating step (S13) of dielectrically heating a powdery mixture to obtain a liquid mixture containing an inorganic substance, the powdery mixture having been obtained by mixing powder of the inorganic substance and hydroxide.
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公开(公告)号：US11920213B2
公开(公告)日：2024-03-05
申请号：US18246671
申请日：2021-04-30
Applicant: GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
Inventor： Haijun Yu , Ting Peng , Yinghao Xie , Xuemei Zhang
CPC classification number: C22B3/3842 , C22B1/02 , C22B1/24 , C22B7/006 , C22B23/0453 , C22B26/12 , C22B47/00 , H01M10/54
Abstract: Disclosed is an incomplete extraction method for recycling batteries, which may include: introducing a pretreatment gas into a device loaded with a waste battery powder, and bringing a gas outlet into communication with absorption liquid A and absorption liquid B in order; raising the temperature and introducing the pretreatment gas; reducing the temperature and introducing a reaction gas; raising the temperature, introducing the reaction gas, and then introducing the pretreatment gas; and reducing the temperature, and turning off the pretreatment gas; adding an extractant to absorption liquid A, mixing the mixture, taking organic phase A, adding a stripping agent, and taking aqueous phase A; and adjusting the pH to acidity, then adding an extractant, taking organic phase B, adding a stripping agent to obtain a stock solution enriched in Li, Mn, Ni and Co.
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Patent Agency Ranking
公开(公告)号：US20230407434A1
公开(公告)日：2023-12-21
申请号：US18210366
申请日：2023-06-15
Applicant: SHINE Technologies, LLC
Inventor： Matthew Szymski , Marci Shelton , Eric Van Abel
Abstract: A method includes forming a powder mixture from a rare earth oxide powder and a lanthanum powder, heating the powder mixture in a crucible assembly positioned in a reduced pressure environment, wherein heating the powder mixture comprises applying heat using a heating element and heating the powder mixture reduces the rare earth oxide powder into a rare earth metal that collects on a collection region of the crucible assembly. The method also includes monitoring a pressure in the reduced pressure environment using a pressure sensor and reducing the heat applied by the heating element to the powder mixture when the pressure in the reduced pressure environment is above a threshold pressure.
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7.发明公开公开(公告)号：US20230387489A1
公开(公告)日：2023-11-30
申请号：US18200088
申请日：2023-05-22
Applicant: American Hyperform, Inc.
Inventor： William Novis Smith
CPC classification number: H01M10/54 , H01M10/0525 , C22B23/02 , C22B7/005 , H01M4/5825 , H01M4/38 , C22B1/24 , H01M2004/028
Abstract: A flotation method for separating cathode material from anode and other carbon materials is described. The cathode material may be that including lithium, nickel, and cobalt or that including lithium iron phosphate. The starting material for the flotation process is conventional black mass as recovered from fractured lithium-ion batteries and lithium-ion battery production scrap. The fractured lithium-ion batteries may originate from spent batteries including used batteries and/or out of specification new production batteries. A very fine mesh screening preferably is used to remove interfering binder from the black mass powder prior to froth flotation, preferably in combination with a hydrophilic depressant to enhance separation of the cathode material from the anode and other carbon materials present in the black mass. The separated cathode and anode materials recovered from the method may be used directly or augmented with additional lithium to form new LIB cathodes, anodes, and batteries.
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公开(公告)号：US11821054B2
公开(公告)日：2023-11-21
申请号：US16832157
申请日：2020-03-27
Applicant: University of Kentucky Research Foundation
Inventor： Rick Honaker , Wencai Zhang
Abstract: A method for recovering valuable elements from pre-combustion coal-based materials includes the steps of grinding the materials to a predetermined size, roasting the ground materials at a temperature of 600° C.-700° C. for a predetermined residence time needed for mineral decomposition, submerging the roasted, ground materials in a solution of lixiviant, filtering the lixiviant solution to separate residual solids from a pregnant leach solution including the valuable elements and recovering and concentrating the valuable elements from the pregnant leach solution.
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公开(公告)号：US20230366061A1
公开(公告)日：2023-11-16
申请号：US18025490
申请日：2021-09-07
Applicant: DOWA ECO-SYSTEM CO., LTD.
Inventor： Chihiro NISHIKAWA , Yoshihiro HONMA , Ryoei WATANABE , Masataka YAMASHITA
CPC classification number: C22B15/0056 , H01M10/54 , C22B1/24 , C22B7/003
Abstract: A method for recovering a valuable substance is provided. The method includes a thermal treatment step of thermally treating a target containing a valuable substance using a continuous furnace configured to thermally treat the target while moving a target storing unit, in which the target is stored, such that the target storing unit is not contacted by a flame that is for thermal treatment, and a valuable substance recovering step of recovering the valuable substance from a thermally treated product of the target obtained in the thermal treatment step.
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10.发明公开公开(公告)号：US20230335816A1
公开(公告)日：2023-10-19
申请号：US18212178
申请日：2023-06-20
Applicant: GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP VEHICLES RECYCLING CO., LTD.
Inventor： Yinghao Xie , Haijun Yu , Changdong Li , Shumin Liu
Abstract: The invention discloses a method and application for a safe recovery of waste anode pieces of lithium ion batteries. The method comprises the following steps: crushing and sieving the waste anode piece to obtain an anode powder A and a crushed aluminum slag; mixing the crushed aluminum slag with an acid solution, stirring under ultrasound, and then performing wet sieving to obtain an aluminum slag and a battery powder; the obtained aluminum slag is washed with water, then rinsed with an explosion suppressant, centrifuging to obtain an explosion suppressing aluminum slag, and then packed and compressed to obtain an aluminum slag block; connecting the two ends of the aluminum slag block to a positive plate and a negative plate of a DC electrode respectively, applying a current to melt the aluminum slag block, and cooling to obtain a safe aluminum slag block.
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