Guangdong Brunp Recycling Technology Co., Ltd

Hunan Brunp Recycling Technology Co. Ltd.

Hunan Brunp Ev Recycling Co., Ltd.

Hunan Brunp Vehicles Recycling Co., Ltd.

Yichang Brunp Contemporary Amperex Co., Ltd.

Yichang Brunp Recycling Technology Co., Ltd.

Hunan Brunp Ev Recycling Co., Ltc.

Yinghao Xie

Haijun Yu

Xuemei Zhang

Aixia Li

Changdong Li

Yingsheng Zhong

Ting Peng

Benben Wu

Jiangdong Chen

Jindong Wu

Jialei Xu

Kang Chen

Tao Wang

Jianfeng Xu

Bo Lin

Banglai Ming

Shumin Liu

Yingnan Wang

Yunguang Yang

Disclosed is a device and method for safe aluminum residue storage, including: a drying bin, where a side wall of the drying bin is provided with a first air inlet pipe and a first air outlet pipe, the first air inlet pipe is connected to a first drying blower, and the first air outlet pipe is connected sequentially to a deacidifier, a dehydrogenator, and a first exhaust fan along an airflow direction thereof; and a storage bin, where a feed inlet of the storage bin is connected to a discharge outlet of the drying bin through a screw conveyor, a side wall of the storage bin is provided with a second air inlet pipe and a second air outlet pipe, the second air inlet pipe is connected to a second drying blower, and an end of the second air inlet pipe can be connected to an inert gas bottle.

Device and method for safe aluminium residue storage

The present disclosure discloses a method for coating a lithium nickel cobalt manganese oxide cathode material, and relates to the technical field of the synthesis of cathode materials. The present disclosure provides a method for coating a lithium nickel cobalt manganese oxide cathode material, comprising the following steps: (1) mixing the lithium nickel cobalt manganese oxide cathode material with a potassium permanganate solution, and introducing an olefin; and (2) after a reaction is completed, a reaction product is dried and calcinated to obtain a manganese-dioxide-coated lithium nickel cobalt manganese oxide cathode material; wherein the number of carbon atoms in the olefin is ≤10, and the number of carbon-carbon double bonds in the olefin is 1. By introducing an olefin when mixing a lithium nickel cobalt manganese oxide cathode material with a potassium permanganate solution, directed coating of surface defects is realized.

Method for coating lithium nickel cobalt manganese oxide cathode material

Disclosed is an apparatus for efficiently pretreating and recycling a waste battery, which includes a bottom plate, a recycling device, a conveying device and a treatment device, and one end of a top portion of the bottom plate is fixedly mounted with a bottom portion of the conveying device. According to the invention, by arranging a fixing assembly and the recycling device, a suction pump can suck a slurry and an electrolyte in a battery downwardly for dropping, and a driving assembly can rapidly convey the slurry and the electrolyte in the battery to the treatment device for treatment at the same time.

Apparatus for efficiently pretreating and recycling waste battery

Disclosed is a method for preparing a graphene-based sodium ion battery negative electrode material, including adding graphene oxide into ethanol absolute, carrying out ultrasonic treatment at a certain temperature to obtain a graphene oxide alcohol dispersion, then preparing a sodium hexanitritocobaltate solution, adding the graphene oxide alcohol dispersion into the sodium hexanitritocobaltate solution, carrying out solid-liquid separation to obtain a solid, isolating the solid from oxygen for calcination, and washing and drying to obtain a graphene-based sodium ion battery negative electrode material.

Method for preparing graphene-based sodium ion battery negative electrode material

A reflux unit and a sewage treatment system are disclosed. The reflux unit includes an input section, a treatment section and an output section which are sequentially communicated. The treatment section is configured for deoxidizing a reflux substance input by the input section. The treatment section is at least partially located above an aeration port of an aeration device or the treatment section is attached to a surface of the aeration device.

Reflux unit and sewage treatment system

Disclosed is a method for repairing a waste silicon-carbon material which relates to the technical field of secondary batteries. The method for repairing a waste silicon-carbon material includes the following steps: (1) pretreating the waste silicon-carbon material to obtain a powdery mixture; (2) mixing the powdery mixture obtained in step (1) with an metal-organic framework compound, and washing and drying the mixture to obtain a black powder; and (3) mixing the black powder obtained in step (2) with graphite, calcining the mixture in an acetylene atmosphere, and subjecting the calcined product to vapor deposition, cooling, washing and drying to obtain a silicon-carbon material.

Method for repairing waste silicon-carbon material and application thereof

A method for preparing a refractory material from waste battery residues. The method comprises the following steps: (1) disassembling waste batteries, then sorting same to obtain positive and negative electrode powders, leaching the positive and negative electrode powders with an acid, filtering same to obtain a graphite slag, and then subjecting the filtrate to copper removal, followed by the addition of an alkali for a precipitation reaction, wherein the resulting precipitate is an iron-aluminum slag; (2) wrapping the graphite slag obtained in step (1) with wet clay to form an inner core material, then mixing wet clay with the iron-aluminum slag, wrapping the inner core material with same, and aging the wrapped inner core material to obtain a blank; (3) pre-sintering, calcining and cooling the blank prepared in step (2) to obtain a fired product; and (4) washing and drying the fired product to obtain the refractory material.

Method for preparing refractory material from waste battery residues, and use of refractory material

Disclosed is a method for recovering and processing a retired battery electrode plate. The method includes disassembling a retired battery to obtain an electrode plate, energizing two ends of the electrode plate until a binder on the electrode plate is heated and melted, and then separating out an electrode material and a current collector, and when the electrode plate is a negative electrode plate, ball milling the separated electrode material, winnowing the ball-milled material to obtain graphite, subjecting the graphite to an alkali treatment, adding the graphite, which has been subjected to the alkali treatment, and an aggregate to softened asphalt, and stirring same to obtain conductive asphalt. The two ends of the electrode are energized, such that the binder is melted into liquid to flow out of the current collector, and the electrode material is stripped off the electrode plate.

Recovery processing method for spent battery electrode plate

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.

Method for extracting valuable metal from low-matte nickel converter slag

The present invention relates to a method for preparing nickel sulfate using low-nickel ferronickel is disclosed. The method comprises the following steps: (1) grinding ferronickel to obtain ferronickel powder, and then sintering the ferronickel powder with an oxidant to prepare ferronickel oxide powder; (2) adding sulfuric acid to the ferronickel oxide powder prepared in step (1), mixing, heating, and washing with water to prepare a sulfate salt water washing solution; (3) adding a base to the sulfate salt water washing solution prepared in step (2) to adjust the pH value, then adding a fluoride salt to form a precipitate, filtering to remove the precipitate, and drying the filtrate to obtain nickel sulfate. The method provided in the present invention can improve the efficiency of preparing nickel sulfate, reduce the loss of nickel, and prepare nickel sulfate with high purity, the content of Ni potentially reaching 19.73%-21.34%.

Method for preparing nickel sulfate using low-nickel ferronickel

Disclosed is a preparation method of porous sodium iron phosphate used as a sodium ion battery cathode material, which includes: mixing ferrous nitrate, silver nitrate and a reducing agent to prepare a mixed solution, adding the mixed solution dropwise to a carbonate solution for reaction to obtain a precipitate, mixing the precipitate with sodium dihydrogen phosphate and sodium iodide and then grinding, sintering the ground material under the condition of air isolation, and soaking the sintered material in an organic solvent to obtain porous sodium iron phosphate used as a sodium ion battery cathode material.

Preparation method of porous sodium iron phosphate used as sodium ion battery cathode material

A method for recycling and preparing a positive electrode material from waste lithium iron phosphate batteries. The method comprises the following steps: discharging, crushing, and stripping waste lithium iron phosphate batteries to obtain black powder; then mixing the black powder with benzenesulfonate, and reacting in a fluidized bed; and then adding an acid and an alkali to remove impurities, finally adding a lithium supplement, an iron supplement, or a phosphate, and a reducing agent, and sintering. According to the method, by controlling and optimizing the crushing, stripping, carbon and fluorine removal, and impurity removal processes, a positive electrode material with high purity can be recycled while controlling the recycling cost, and batteries prepared by means of the recycled positive electrode material have good performance.

Method for recycling and preparing positive electrode material from waste lithium iron phosphate batteries

Disclosed are a nickel-iron wet treatment method and an application thereof. The treatment method comprises: in a high-pressure oxygen environment, mixing a crushed nickel-iron material, sulphuric acid and a corrosion aid, performing an acid leaching reaction, then performing solid-liquid separation on slurry subjected to acid leaching, adding an oxidant into the obtained filtrate, performing heating, removing the corrosion aid, adding a precipitating agent into the filtrate, controlling the pH value of the filtrate, and performing solid-liquid separation to obtain a ferric hydroxide precipitate and a nickel-containing filtrate; and performing extraction and back extraction on the nickel-containing filtrate to prepare battery-grade nickel sulphate. According to the present invention, the nickel-iron is subjected to oxidation acid dissolution in cooperation with the corrosion aid under the high-pressure oxygen and acidic conditions; the nickel-iron is extremely prone to oxidation in the high-pressure oxygen environment; and a strong oxidant is added into the filtrate subsequently, so that ferrous ions in the filtrate are completely converted into ferric ions, and the corrosion aid can be oxidized to generate pollution-free carbon dioxide and water, thereby avoiding the impact of the corrosion aid on the subsequent extraction process.

Nickel-iron wet treatment method and application thereof

Disclosed in the present invention is a method for extracting nickel from a high matte nickel leaching residue. The method comprises: firstly, adding a crushed material of a high matte nickel leaching residue to an organic solvent in which sulfur is dissolved, heating same for reaction, and carrying out solid-liquid separation to obtain a first filtrate and a first filter residue; adding the first filter residue to a copper sulfate solution, heating same for reaction, and carrying out solid-liquid separation to obtain a second filtrate and a second filter residue; and evaporating, condensing and concentrating the second filtrate, and filtering same to obtain copper sulfate crystals and a nickel-containing filtrate. Throughout the whole reaction, only a small amount of sulfur and copper sulfate are consumed, and the organic solvent can be recycled.

Method for extracting nickel from high matte nickel leaching residue

The present invention discloses a preparation method for and the use of a lithium silicate-based adsorbent. The method comprises: mixing and stirring butyl methacrylate, an acid and an organic solvent to obtain a first solution; adding lithium silicate, an initiator and N,N′-methylenebisacrylamide into the first solution, and heating and stirring same for a reaction to obtain a second solution; subjecting the second solution to low-temperature dehydration, cooling and drying to obtain a lithium silicate-based polymer; mixing the lithium silicate-based polymer with a third solution; and subjecting same to low-temperature carbonization under anoxic conditions, so as to obtain the lithium silicate-based adsorbent, wherein the third solution is obtained by mixing cotton fibers, tartaric acid, carboxymethylcellulose and water.

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Foshan, China

Yinghao Xie