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公开(公告)号：US20240327945A1
公开(公告)日：2024-10-03
申请号：US18291045
申请日：2022-03-31
Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA , CHINA CONCH VENTURE HOLDINGS LIMITED , ANHUI CONCH KAWASAKI ENERGY CONSERVATION EQUIPMENT MANUFACTURING CO., LTD.
Inventor： Hiroaki OSAWA , Shoji TAKADA , Mariko YAMASHITA , Masaki TSUZAWA , Ryosuke NAGAI , Masahiro SUGATA , Fuminori ANDO , Daming LI , Fengwa ZHAO , Yang LI , Wenfang TANG , Mingjun SONG , Hongfeng YANG
Abstract: A waste lithium-ion battery processing method is a method of processing a waste lithium-ion battery whose cathode active material contains phosphorus to recover lithium from the waste lithium-ion battery. The method includes: a thermal decomposition step of roasting the waste lithium-ion battery to thermally decompose the waste lithium-ion battery to produce a roasted product that contains the cathode active material; and a recovery step of immersing the produced roasted product in water to elute the lithium from the roasted product into the water, and then recovering the lithium. The thermal decomposition step includes: a roasting step of roasting the waste lithium-ion battery at a predetermined first temperature; and a mixing step of, before the roasting step, mixing a non-lithium alkali metal salt into the cathode active material of the waste lithium-ion battery.
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公开(公告)号：US12018346B2
公开(公告)日：2024-06-25
申请号：US18260235
申请日：2022-06-06
Applicant: GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
Inventor： Haijun Yu , Yinghao Xie , Aixia Li , Xuemei Zhang , Changdong Li
CPC classification number: C22B23/0484 , C22B1/02 , C22B7/005 , C22B7/007 , C22B7/008 , C22B7/04 , C22B23/005 , C22B23/0415 , C22B23/0446 , C22B23/0461
Abstract: Disclosed in the present invention is a method for extracting valuable metal from low-matte nickel converter slag. The method comprises: mixing low-matte nickel converter slag and quicklime then calcinating, obtaining a calcinated material; grinding and magnetically separating the calcinated material, obtaining silicate and iron-rich slag; adding a strong alkali solution to the iron-rich slag to perform leaching processing, and performing solid-liquid separation, obtaining a filtrate and a residue; mixing the residue with an acid solution, performing oxygen pressure acid leaching, and performing solid-liquid separation, obtaining a leachate and iron oxide; introducing hydrogen sulfide gas into the leachate, adjusting the pH, and performing solid-liquid separation, obtaining a copper sulfide precipitate and a nickel-cobalt-containing filtrate. In the present invention, first, removing silicon dioxide is removed by means of calcination to prepare silicate, then iron oxide is prepared by means of acid leaching, and finally metal separation is performed on the leachate, causing various components of the converter slag to be effectively utilized. The process flow of the present invention is short and effectively utilizes each component of the low-matte nickel converter slag, waste is turned into valuable material, and the loss of valuable metal elements is reduced.
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公开(公告)号：US20240186604A1
公开(公告)日：2024-06-06
申请号：US17798107
申请日：2022-02-21
Applicant: JX Nippon Mining & Metals Corporation
Inventor： Hiroshi MIYANAGA , Yasufumi HAGA
Abstract: A method for treating battery waste includes: a first heat treatment step of heating the battery waste in an atmosphere containing at least one selected from the group consisting of nitrogen, carbon dioxide and water vapor; and after the first heat treatment step, a second heat treatment step of changing the atmosphere in the first heat treatment step and heating the battery waste in an atmosphere which is different from the atmosphere in the first heat treatment step and which contains a larger amount of oxygen than that in the first heat treatment step.
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公开(公告)号：US11905573B2
公开(公告)日：2024-02-20
申请号：US17407569
申请日：2021-08-20
Applicant: Pioneer Astronautics
Inventor： Mark Berggren , Robert Zubrin , John T. Henri , Boris Nizamov
Abstract: Novel methods of recovering neodymium and related rare earth elements from permanent magnets of various compositions are described. The methods employ processing steps including converting the magnet material to a higher surface area form such as a powder, treating the mixture with alkaline solutions to form product concentrated in neodymium and rare earth metals. Inexpensive materials such as ammonia, ammonium carbonate, carbon dioxide, water are recycled in a process that uses moderate temperatures, pressures and non-corrosive and environmentally-friendly chemicals.
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5.发明公开公开(公告)号：US20230344030A1
公开(公告)日：2023-10-26
申请号：US18215811
申请日：2023-06-28
Applicant: HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
Inventor： Xie Sun , Ding Yang , Ruokui Chen , Yanchao Qiao , Xianliang Zheng , Feng Tan , Changdong Li
CPC classification number: H01M10/54 , C22B7/005 , C22B7/008 , C22B21/0023 , C22B15/0065 , C22B15/0091 , C22B23/0415 , C22B47/00
Abstract: Disclosed are a method for removing elemental copper from ternary battery waste and its application. The method comprises the following steps: crushing and screening the ternary battery waste to obtain a powder, and then removing iron by magnetic separation to obtain an iron-removed ternary waste; Adding an alkaline solution to the iron-removed ternary waste to perform an aluminum removal reaction, filtering to obtain a filter slag and aluminum-containing wastewater, washing the filter slag with water and drying to obtain a copper-nickel-cobalt-manganese material. Adding an iron salt solution to the copper-nickel-containing material to perform a leaching process, filtering to obtain a leachate and a nickel-cobalt-manganese waste; adding iron powder to the leachate and stirring to perform a reaction, filtering to obtain a copper residue, washing the copper residue with water and drying to obtain a copper-removed liquid and a sponge copper.
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Patent Agency Ranking
公开(公告)号：US20230335817A1
公开(公告)日：2023-10-19
申请号：US18212697
申请日：2023-06-21
Applicant: GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD. , HUNAN BRUNP EV RECYCLING CO., LTD.
Inventor： Haijun Yu , Yinghao Xie , Aixia Li , Xuemei Zhang , Changdong Li
Abstract: A method for recycling a lithium battery cathode material. Residual aluminum on the positive electrode sheet is dissolved by a sodium hydroxide solution, and lithium in the cathode material enters the solution during the dissolution of aluminum, such that an ionic potential is vacated on the cathode material; a residue is washed to avoid sodium ion contamination, then dried, and allowed to react with metallic lithium and lithium sulfide under heating, such that crystal lattices of the material change; a product after first-stage lithium supplementation is directly sintered with a lithium source in an oxygen atmosphere to obtain monocrystalline ternary cathode material agglomerates, where a sintering method and a sintering temperature are controlled; and the agglomerates are crushed, then washed to remove residual lithium on the surface, and dried to obtain a monocrystalline ternary cathode material, which has the performance close to that of the initially synthesized monocrystalline cathode material.
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7.发明公开公开(公告)号：US20230192488A1
公开(公告)日：2023-06-22
申请号：US16627721
申请日：2019-01-15
Applicant: Beijing University of Technology
CPC classification number: C01B7/096 , C01G21/20 , C01G9/06 , C22B7/008 , C22B7/02 , C22B13/045 , C22B19/24
Abstract: The invention relates to the field of efficient separation and recovery of bromine by full wet method, especially to a two-step separating method of bromide and recovery of lead and zinc from printed circuit board Incineration ash. It mainly includes first sodium hydroxide alkaline leaching, secondary sodium peroxide alkaline leaching, pH adjustment, separate lead and zinc, bromide evaporation and crystallization to recover crude bromide and other steps. Compared with traditional comprehensive recovery process of ash, the invention uses sodium hydroxide to dissolve bromide, lead and zinc, and uses the strong oxidation of sodium peroxide in alkaline environment, copper bromide and other bromine are oxidized and leached; through two-step method, the efficient leaching of bromine, lead and zinc is realized, silver and other precious metals are enriched at the same time. It is beneficial to subsequent recovery of precious metals and has the characteristics of short tail liquid discharge.
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8.发明申请公开(公告)号：US20180051357A1
公开(公告)日：2018-02-22
申请号：US15560711
申请日：2016-03-16
Applicant: NISSHIN STEEL CO., LTD.
Inventor： Yasushi FUKUI , Akihiro ASABA , Shoichi MATSUO , Masaya YAMAMOTO
CPC classification number: C22B7/04 , C01F11/18 , C04B5/00 , C04B5/06 , C21C5/28 , C22B7/008 , Y02P10/212 , Y02W30/542
Abstract: The purpose of the present invention is to provide a method for recovering calcium-containing solid components from steelmaking slag, with which it is possible to easily increase the calcium recovery rate. With the method, steelmaking slag is immersed in an aqueous solution containing carbon dioxide, and calcium in the steelmaking slag is made to leach out into the aqueous solution. Next, the immersed steelmaking slag is removed from the aqueous solution, and, subsequently, the pH of the aqueous solution is increased. When solid components precipitated by doing so are recovered, it is possible to recover solid components containing 20% or more by mass in terms of calcium atoms.
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9.发明授权Process for recovering metal values from oxides of manganese-containing materials 有权从含锰材料的氧化物中回收金属值的方法公开(公告)号：US09284627B2
公开(公告)日：2016-03-15
申请号：US14397067
申请日：2013-10-18
Inventor： William F. Drinkard , Hans J. Woerner , William M. Nixon
IPC: C22B47/00 , C22B7/00 , C22B3/06 , C22B3/22 , C22B3/14 , C01B21/20 , C22B3/44 , C22B3/00 , C22B15/00
CPC classification number: C22B47/0063 , C01B21/20 , C22B3/06 , C22B3/065 , C22B3/14 , C22B3/22 , C22B3/44 , C22B7/007 , C22B7/008 , C22B13/04 , C22B15/0089 , C22B17/04 , C22B23/0461 , C22B47/00 , C22B47/0027 , C22B47/0045 , C22B47/0072 , C22B47/0081 , Y02P10/234
Abstract: An improved method for treating manganese-containing materials, such as nodules recovered by undersea mining, including reacting the materials with ammonia, and leaching with a mineral acid, and to methods for recovering valuable constituents from such nodules, especially manganese, cobalt, nickel, iron, copper, titanium, vanadium, cerium, and molybdenum. A method for the production of nitrate products is also disclosed.
Abstract translation: 一种用于处理含锰材料的改进方法，例如通过海底采矿回收的结节，包括使材料与氨反应，以及用无机酸浸出的方法，以及用于从这些结核，特别是锰，钴，镍， 铁，铜，钛，钒，铈和钼。 还公开了硝酸盐产品的生产方法。
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公开(公告)号：US09284624B2
公开(公告)日：2016-03-15
申请号：US13988911
申请日：2011-11-23
Applicant: Raymond Walter Shaw , Neal Barr
Inventor： Raymond Walter Shaw , Neal Barr
Abstract: A process for recovering zinc from a zinc containing material, the process including the steps of: leaching the zinc containing material with an alkaline lixiviant comprising an aqueous mixture of NH3 and NH4Cl, or ionic equivalent, having a NH4Cl concentration of between about 10 g/L and about 150 g/L H2O and a NH3 concentration of between 20 g/l H2O and 250 g/L H2O, to produce a zinc containing leachate; stripping ammonia from the leachate to produce a stripped liquor which includes a zinc containing precipitate, the stripped liquor having a NH3 concentration of between 7 and 30 g/L H2O; and recovering the zinc from the stripped liquor.
Abstract translation: 一种从含锌材料中回收锌的方法，该方法包括以下步骤：用包含NH 3和NH 4 Cl的水性混合物或离子当量的碱性浸液浸出含锌材料，其NH 4 Cl浓度为约10g / L和约150g / L H 2 O和NH 3浓度在20g / l H 2 O和250g / L H 2 O之间，以产生含锌浸出液; 从渗滤液中除去氨以产生包含含锌沉淀物的汽提液，所述汽提液体的NH 3浓度为7至30g / L H 2 O; 并从汽提液中回收锌。
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