28 results about "Cobalt" patented technology

The invention discloses a method for preparing a nickel-cobalt-manganese ternary material precursor. By virtue of the method, waste small-particle-size nickel-cobalt-manganese ternary material precursors in a product are separated out and recycled into a reaction kettle, so that the ternary material precursors with the particle size of 7-15 micro meters account for over 95% in the product.

The invention provides a synergetic metal recycling method for nickel and cobalt containing waste batteries and copper containing electronic waste. The preliminarily smashed and metal element enriched waste batteries and the copper containing electronic waste are mixed, and a slag former and a reducing agent in a certain ratio are blended for an oxidative reducing reaction; relatively active metal iron, aluminum and the like in the reaction process form oxide to enter an upper layer slag phase; metal cobalt and nickel enter copper liquid on the bottom layer, and therefore the metal phase and a slag phase are separated, and metal containing copper, cobalt and nickel is obtained; and copper, cobalt, nickel and other high-purity metal are recycled through electrorefining. The method is short in flow, high-temperature thermometallurgy is adopted for synergetically recycling the valuable metal in the batteries and the electronic waste, and the problems that traditional waste battery wet recycling efficiency is low, the environment is polluted, a large amount of lixivium needs to be used, and a large amount of acid and alkaline is consumed are avoided; and an efficient novel recycling way is provided for waste ternary battery and electronic waste resource recycling, and good industrial application prospects are achieved.

This invention relates to a method for preparing nanoscale perovskite-type LaCoO3 by stearic acid gel combustion. The method comprises: (1) weighing lanthanum nitrate, cobalt nitrate and stearic acid at a mol ratio of 1 : 1 : (9.5-12.0); (2) heating in an oil bath, dissolving stearic acid, adding lanthanum nitrate and cobalt nitrate, magnetically stirring at 110-120 deg.C and reacting to obtain a gel; (3) combusting at 450 deg.C in a muffle furnace, taking out the product, milling and torrefying at 850 deg.C for 3 h in the muffle furnace to obtain 10-35 nm perovskite-type LaCoO3. The method is simple and suitable for mass production.

A process for preparing an amine by reacting a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group of ammonia and primary and secondary amines, in the presence of a supported copper-, nickel- and cobalt-containing catalyst, wherein the catalytically active material of the catalyst, before the reduction thereof with hydrogen, comprises oxygen compounds of aluminum, of copper, of nickel, of cobalt and of tin, and in the range from 0.2 to 5.0% by weight of oxygen compounds of yttrium, of lanthanum, of cerium and/or of hafnium, each calculated as Y₂O₃, La₂O₃, Ce₂O₃ and Hf₂O₃ respectively, and catalysts as defined above.

The invention provides a system for continuously recycling a waste ternary lithium-ion battery and belongs to the technical field of recycling of lithium-ion batteries. The system comprises a pre-treatment unit, an acid leaching unit, a primary impurity removal unit, a co-precipitation unit, a secondary impurity removal unit and an ammonia recycling unit, wherein the pre-treatment unit comprises apulverizer, a pulse dust collection device, a positive and negative electrode powder cabin and a separation machine; the acid leaching unit comprises a leaching reaction kettle and a micro-filteringmachine I; the primary impurity removal unit comprises an impurity removal reaction kettle and a squeezing machine; the co-precipitation unit comprises a material preparation kettle, a co-precipitation reaction tank and a centrifugal machine; the secondary impurity removal unit comprises a secondary impurity removal reaction kettle and a micro-filtering machine II; the ammonia recycling unit comprises a heater, an evaporation crystallization device, a condenser and an ammonia liquid receiving tank. The invention further provides a technology for continuously recycling the waste ternary lithium-ion battery by utilizing the system. According to the system provided by the invention, a prepared nickel-cobalt-manganese ternary material precursor has high purity and large tap density; grains have a small grain diameter and narrow distribution and are uniformly mixed; a lithium sulfate solution can be directly used for producing lithium carbonate.

The invention relates to the technical field of polymer materials, and concretely relates to a high-rigidity and high-toughness resin material for clothing buttons. The resin material includes unsaturated polyester resin, styrene, acrylate, rigid toughened mother powder, polyamide wax, a pearlescent pigment, an ultraviolet absorber, a promoter, an initiator and an antioxidant, wherein the rigid toughened mother powder is a special high-hardness elastomer material; the ultraviolet absorber is one of an ultraviolet absorber UV-327, an ultraviolet absorber UV-P and an ultraviolet absorber UV-9; the promoter is cobalt isooctylate or cobalt naphthenate; the initiator is methyl ethyl ketone peroxide; and the antioxidant is an antioxidant 1076, an antioxidant 164 or an antioxidant TNP. The buttons made of the resin material have the advantages of high toughness, difficulty in fracture, good rigidity and outstanding impact resistance.

The invention provides a preparation method for MnO2@SiO2 nano composite particles with core-shell structures. The method comprises the steps of A) mixing potassium permanganate and a silica precursorto obtain a mixed solution; B) irradiating the mixed solution with a cobalt 60 source under a stirring condition to initiate reactions to obtain a mixed solution after irradiation; C) centrifuging the irradiated mixed solution, and separating to obtain the MnO2@SiO2 nano composite particles with the core-shell structures. The method directly irradiates the potassium permanganate solution containing the silica precursor by 60Co gamma-ray, and obtains the MnO2@SiO2 composite nano particles with particle diameters of 100 nanometre or less which take MnO2 as cores and SiO2 as shells by a one-stepmethod. The method has the advantages of simple formula, convenient operation, economic performance, energy saving, green and environmental protection.

The invention relates to the technical field of welding, in particular to an argon arc welding surfacing process for a cobalt-free material ERFeCr-A5, comprising the following steps of: (1) preparing and cleaning before welding: preheating a workpiece to 100-250 DEG C; (2) welding: carrying out argon arc welding, wherein the welding current is direct current, the polarity is anode, the current range is 190-210A, the protective gas is argon gas, the flow rate of the argon gas is 11-15L/min, and the welding speed is 9-11cm/min; and (3) postheat treatment: preserving the heat of the workpiece at 100-250 DEG C for more than 4 hours. The invention aims to provide a reasonable argon arc welding surfacing process for the cobalt-free material ERFeCr-A5 to meet the requirement of a production process of a cobalt-free hard alloy surfacing layer on a sealing surface of a nuclear safety class valve.

The invention relates to a special fertilizer and in particular relates to a fertilizer special for pasture. The fertilizer special for pasture is characterized by comprising the following components in parts by weight: 8-12 parts of urea, 12-16 parts of potassium sulfate, 14-18 parts of calcium superphosphate, 10-15 parts of special filler and 3-4 parts of mixed micro element fertilizer. According to the fertilizer special for pasture, provided by the invention, the yield of the pasture is increased by 10-20 percent, the absorption accumulation amount of nutritive indexes such as crude proteins, crude fats, molybdenum, cobalt, selenium and the like in the pasture is improved by over 10 percent, and the produced pasture is safe to utilize, comprehensive in nutrition and high in additional value.

The invention discloses a novel powder metallurgical gear. The novel powder metallurgical gear is prepared from iron powder, copper powder, molybdenum powder, vanadium powder, nickel powder, yttrium powder, aluminum powder, magnesium powder, cobalt powder, lead powder, steel slag powder, cupola slag powder, ferroalloy slag powder, modified tree ash powder, graphite powder, epoxidized butyl stearate, silicone oil, methylcellulose, aluminum stearate, polyethylene glycol, ethylene bisstearamide, stearic acid, carbon fibers, glass fibers, boron nitride, epoxy propoxy propyl trimethoxysilane, silica, manganese sulfide, acrylate, an inhibitor, a binder, an enhancer, a cutting agent, a lubricant, a coupling agent and a dispersion agent. According to the novel powder metallurgical gear, through the specific composition proportion, the novel powder metallurgical gear is even in overall density, high in density, high in ductility and area percentage reduction, good in wear resistance, strength and hardness, high in material utilization rate and suitable for quickly producing high-performance gears on a large scale.

The invention relates to the field of automobile making, in particular to a novel thermoforming reinforcer and a processing method thereof. The novel thermoforming reinforce comprises the following components in parts by weight: 20-30 parts of iron, 3-5 parts of nano silicon carbide particles, 3-5 parts of tungsten, 1-2 parts of manganese, 2-6 parts of molybdenum, 3-5 parts of cobalt, 2-3.5 partsof nickel, 1-2 parts of chromium, 3-5 parts of vanadium and 2-4 parts of titanium. A manufacturing method for the reinforcer comprises the following steps of: (1) uniformly mixing the components; (2)adding mixed raw materials into a heating furnace to refine; (3) forging and pressing; (4) quenching; (5) tempering; and (6) stamping and manufacturing. A stamping part material manufactured by the manufacturing method has excellent hardness, excellent yield strength and excellent tensile strength.

The invention belongs to the technical field of metal wire drawing die manufacturing, and relates to a self-lubricating hard alloy wire drawing die and a preparation method thereof. According to the self-lubricating hard alloy wire drawing die, a base body material is prepared from the components: a tungsten-cobalt hard alloy phase and a lubricating phase, and the self-lubricating effect of drawing processing can be achieved. The self-lubricating hard alloy wire drawing die is prepared through processes of carrying out hot pressing sintering to form a blank, carrying out perforating by adopting high-energy beams, carrying out precise and fine grinding and finishing and the like. The wire drawing die can be widely applied to dry-drawing processing of nonferrous metal wires, rapid abrasion of a drawing working surface of the die caused by the low hardness of a hard alloy bonding phase can be effectively ameliorated, and therefore the service life of the wire drawing die is remarkably prolonged, the wire drawing processing production efficiency is remarkably improved, the processes are simple and convenient to use, and the wire drawing die is green and environmentally friendly.

The invention discloses a method for producing a ytterbium-doped lithium nickel cobalt manganese oxide material used for a lithium ion battery. The method comprises the following steps: a) weighing the raw materials according to stoichiometric ratio; b) adding absolute ethyl alcohol in the raw materials, performing ball milling and taking the materials out and drying the materials; c) adding acetate fibre, potassium chloride and sodium chloride in the raw materials obtained in the step 2) for mixing with molten salt and absolute ethyl alcohol, performing ball milling and drying the materials; and d) sintering the raw materials obtained in the step c), cooling the materials, washing the obtained powder, and drying to obtain the material. The ytterbium-doped lithium nickel cobalt manganese oxide material has higher discharge capacity and gram capacity; and has a hollow tube structure, through further processing, the tube wall is loosening so as to alleviate the volume expansion problem; inorganic filling material titanium dioxide in the acetate fibre is used, and is doped into crystal lattice of the ytterbium-doped lithium nickel cobalt manganese oxide material, so that stability of the ytterbium-doped lithium nickel cobalt manganese oxide material is improved, and the capacity attenuation problem of the lithium ion battery is improved.

The invention discloses a diamond composite sheet and a preparation method thereof. The method comprises the following steps: plating a layer of metal cobalt on the surface of diamond micro-powder inadvance to obtain the diamond micro-powder with the metal cobalt plated on the surface; filling a metal cup or a carbon mould with the diamond micro-powder with the metal cobalt plated on the surfaceand a hard alloy substrate, and performing vacuum treatment on an assembled component; and filling a sintering mould with the component which is subjected to the vacuum treatment, and sintering to thediamond composite sheet. According to the diamond composite sheet and the preparation method thereof, the problems that the strength, the impact resistance, the toughness and the wear resistance of the diamond composite sheet of the diamond composite sheet are not high because the metal cobalt is distributed unevenly in the existing diamond composite sheet are solved.

The invention discloses an alloy powder for plasma cladding. The alloy powder for plasma cladding is mainly composed of, by mass, 51%-65% of chromium, 0%-15% of vanadium, 8.1%-9% of carbon, 6.1%-8% ofboron, 0%-6% of cobalt, 0%-12% of tungsten carbide and the balance Fe and unavoidable impurities. The alloy powder for plasma cladding is especially suitable for plasma cladding of wear-resistant parts, and a cladding layer is high in hardness, good in wear resistance, small in cracking tendency and good in plasma cladding technology performance.

The invention belongs to the field of lithium battery recycling and particularly relates to a method for recovering cobalt and nickel from a waste lithium battery. The method comprises the following steps of (1) crushing a positive plate of the lithium battery into powder particles; (2) adding the crushed particles to excessive first strong alkaline solution, stirring until no bubble is generatedand filtering; (3) adding sulfuric acid and hydrogen peroxide to a filter cake and filtering after reaction is ended; (4) heating filtrate in a nitrogen environment, adding the first strong alkaline solution and carrying out suction filtration after the reaction is ended; and (5) washing and drying the filter cake and then detecting the filter cake. Compared with an extraction-reverse extraction process, the method provided by the invention is simple in technological process, relatively low in equipment requirements and high in operability; and after obtained composite hydroxide is washed, thecontent of nickel and cobalt is greater than 50% and the content of manganese is smaller than 2%, so that separation of precious metals, namely the nickel and the cobalt from a low-valence metal manganese is achieved.

The invention relates to a hydrolysis saccharification process of alternanthera philoxeroides. Metal substance pollutants (iron, cobalt and nickel) in alternanthera philoxeroides raw materials are absorbed by adopting magnetic force, so that subsequent mechanical abrasion and contents of metal ions in treating fluid are reduced, and a good fermentation condition is created for detoxification of selected cupriavidus metallidurans; then solid-liquid separation is realized by adopting an extrusion method, hydrolysis on lipids and protein contained in liquid-state materials is carried out by adopting an NaOH solution, and then hydrolysis treatment is further carried out by adopting trypsase, so that the hydrolysis is more completely carried out; meanwhile, extruded solids are dried and crushedand then dropped into a sulfuric acid solution to carry out acidolysis; through electrorheological fluid shear stress effect treatment, cellulase is then added and enzymatic treatment is carried out,so that the effect is good and energy consumption is low. According to the hydrolysis saccharification process of the alternanthera philoxeroides disclosed by the invention, the raw material treatment efficiency is improved to the maximum extent, and finally, saccharified hydrolytic solutions rich in nutrient substances such as glucose, amino acid, small molecule chain lipids and the like are obtained, so that the glucose content is high, and the glucose can be conveniently supplied for further fermentation, and the production efficiency is improved.

The invention relates to low-silver high-strength lead-free tin-based brazing filler metal and a preparation method thereof. The low-silver high-strength lead-free tin-based brazing filler metal is prepared from, by mass, 0.3%-1.0% of silver, 0.5%-0.9% of copper, 0.03%-0.5% of cobalt, 0.1%-1.0% of aluminum oxide, 0-0.05% of microelements and the balance tin. The preparation method of the low-silver high-strength lead-free tin-based brazing filler metal comprises the following steps that silver, tin and copper are smelted into smelting liquid; if cobalt exists in the components, tin and cobalt are added into the smelting solution; if cerium and/or phosphorus exist in the components, adding the copper-cerium alloy and/or the copper-phosphorus alloy wrapped by the tin foil into the molten smelting solution; after all the elements are melted, aluminum oxide powder is added, and smelting is conducted for 2-3 hours at the temperature of 500-600 DEG C; and injection molding. The method is convenient to smelt, low in loss, good in wettability, appropriate in melting temperature, small in welding spot, high in strength, good in reliability and resistant to high temperature.

The invention relates to a preparation method of catalysts and particularly relates to a preparation method of a catalyst for catalytic oxidation synthesizing of acrolein through propylene. The preparation method comprises the following steps of: (1) preparing a composite carrier of silicon carbide and MCM-41; (2) respectively preparing precursor solutions of active ingredients, uniformly mixing and stirring the precursor solutions of cobalt, ferrum and potassium to obtain a mixed precursor solution A, uniformly mixing and stirring the precursor solutions of tungsten and manganese to obtain a mixed precursor solution B, and loading the active ingredients through an impregnation method to obtain the catalyst. When the catalyst for catalytic oxidation synthesizing of acrolein through propylene prepared by the preparation method provided by the invention is applied in a catalytic oxidation synthesis reaction of acrolein through propylene, the reaction temperature is 300 DEG C, the conversion rate of the propylene is 99%, and the yield of acrolein is 87.6%.