There is provided a recycled cathode material precursor, including: a metal element α consisting of at least one of nickel, cobalt and manganese; and a metal element β consisting of at least one of iron, copper and aluminum, wherein a content of the metal element β is 0.5 to 20% by mass in the recycled cathode material precursor.
C22C 29/12 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on oxides
H01M 4/02 - Electrodes composed of, or comprising, active material
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
A method of separating valuable materials. The method includes a heat treatment step of performing a heat treatment on a lithium-ion secondary battery including valuable materials, a crushing step of crushing a heat-treated product obtained in the heat treatment step, and a classification step including a first classification step of classifying a crushed product obtained in the crushing step into a coarse-particle product and an intermediate product at a classification cut-point of 0.6 mm or greater and 2.4 mm or less, and a second classification step of classifying the intermediate product into a medium-particle product and a fine-particle product at a classification cut-point of 40 μm or greater and 300 μm or less.
The present invention provides a method for recovering valuable materials from lithium ion secondary batteries, the method comprising: a heat treatment step in which a heat treated material is obtained by subjecting lithium ion secondary batteries to a heat treatment; a first classification step in which a coarse grain product 1 and a fine grain product are obtained by classifying a crushed material that is obtained by crushing the heat treated material; a second classification step in which a coarse grain product 2 and a microfine grain product are obtained by classifying a ground material, which is obtained by grinding the fine grain product, at a classification point that is smaller than the classification point of the first classification step; a first magnetic separation step in which a magnetically attracted material 1 and a magnetically non-attracted material 1 are obtained by magnetically separating the microfine grain product obtained in the second classification step; a second magnetic separation step in which a magnetically attracted material 2 and a magnetically non-attracted material 2 are obtained by magnetically separating the magnetically non-attracted material 1 obtained in the first magnetic separation step; and a recovery step in which valuable materials are recovered from the magnetically attracted material 1 and the magnetically attracted material 2.
Provided is a method for recovering valuable materials from lithium ion secondary batteries, said method comprising: a heat treatment step for obtaining a heat-treated material by subjecting a lithium ion secondary battery to a heat treatment; a first classification step for obtaining a coarse-grain product 1 and a fine-grain product, by crushing the heat-treated material and classifying the resulting crushed material using a classification point from 600 µm to 2,400 µm; a pulverization step for pulverizing the fine-grain product to obtain a pulverized material; a second classification step for obtaining a coarse-grain product 2 and a very fine-grain product 1, by classifying the pulverized material using at least one classification point that is smaller than the classification point in the first classification step and is from 75 µm to 1,200 µm; and a magnetic sorting step for sorting, using magnetic force, the very fine-grain product 1 yielded by the second classification step.
A method for recovering a valuable substance from a lithium ion secondary battery is provided. The method includes a thermal treatment step of thermally treating a lithium ion secondary battery containing aluminum, carbon, and a copper foil as constituting materials, and a wet sorting step of applying an external force to a thermally treated product obtained in the thermal treatment step in the presence of a liquid, to sort the thermally treated product into a heavy product and a light product containing copper.
RECYCLED POSITIVE ELECTRODE MATERIAL, METHOD FOR PRODUCING SAME, METHOD FOR USING RECYCLED POSITIVE ELECTRODE MATERIAL, RECYCLED POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Provided is a recycled positive electrode material comprising: lithium, nickel, cobalt, and manganese; 0.3 mass% to 3 mass% of aluminium; and less than 1 mass% of at least one of copper and iron.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
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.
A method for recovering a valuable substance is provided. The method includes a thermal treatment step of thermally treating a target, which contains a valuable substance and is stored in a target storing unit, via a flame blocking unit configured to block a flame for thermally treating the target such that the target storing unit is not contacted by the flame, 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.
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 while supporting a target storing unit, in which the target is stored, by a supporting unit that can support the target storing unit, wherein the thermally treating includes heating a gas present in a region, in which the supporting unit is positioned, by a flame for thermally treating the target such that the target storing unit is not contacted by the flame; 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.
This method for processing a solar cell module comprises: a preparation step of removing a frame member from the solar cell module to obtain a removed frame; a crushing step of crushing the removed frame to obtain a crushed material; and an electrostatic separation step of subjecting the crushed material to electrostatic separation, wherein in the electrostatic separation step, the crushed material is electrically charged, and separation is performed according to density and conductivity.
22 is added to a liquid that is obtained by the neutralized cake solid-liquid separation step; a calcium carbonate solid-liquid separation step in which a liquid that is obtained by the calcium carbonate crystallization step is subjected to solid-liquid separation; and a calcium adsorptive removal step in which calcium is adsorbed and removed by means of a chelating resin after the calcium carbonate solid-liquid separation step.
C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
A metal recovery method includes crushing a photovoltaic module or a photovoltaic sheet-like structure to form debris; and sorting the debris, wherein the photovoltaic sheet-like structure is obtained by removing a glass substrate and a frame member from the photovoltaic module, and includes at least a photovoltaic cell, a metal pattern wired from the photovoltaic cell, and an encapsulant to encapsulate the photovoltaic cell and the metal pattern.
Provided is a method for concentrating a valuable metal contained in a lithium ion secondary battery, for processing a lithium ion secondary battery containing at least one element selected from the group consisting of cobalt and nickel, or a positive electrode material of the lithium ion secondary battery, to concentrate a valuable metal containing either or both of cobalt and nickel. The method includes a thermal treatment step of thermally treating the lithium ion secondary battery or the positive electrode material thereof, to form a granular aggregate containing at least one valuable metal selected from the group consisting of cobalt and nickel.
A method for recovering valuable substance, for recovering it from lithium ion secondary battery includes: thermal treatment step of thermally treating lithium ion secondary battery to obtain thermally treated product; pulverizing/classifying step of classifying pulverized product obtained by pulverizing thermally treated product, to obtain coarse and fine-grained products both containing valuable substance; water leaching step of immersing fine-grained product in water, to obtain water-leached slurry; wet magnetic sorting step of subjecting water-leached slurry to wet magnetic sorting, to sort water-leached slurry into magnetically attractable materials and non-magnetically attractable material slurry; and acid leaching step of adding acidic solution to either or both of non-magnetically attractable material slurry recovered by wet magnetic sorting and non-magnetically attractable materials obtained by solid-liquid separation of non-magnetically attractable material slurry to leach non-magnetically attractable materials at pH lower than 4, followed by solid-liquid separation to obtain acid leaching liquid and acid leaching residue.
Provided is a method for recovering lithium, for recovering lithium from a lithium ion secondary battery, the method including: a thermal treatment step of thermally treating a lithium ion secondary battery having a residual voltage higher than or equal to 80% of a rated voltage, to obtain a thermally treated product; a pulverizing step of pulverizing the thermally treated product, to obtain a pulverized product; and a lithium recovering step of recovering lithium from the pulverized product.
Provided is a sorting method for valuable resources, including a thermal treatment step of thermally treating a target containing valuable resources, to melt aluminum and separate a melt, a pulverizing step of pulverizing a thermally treated product remaining after the melt is separated, to obtain a pulverized product, a magnetic sorting step of sorting the valuable resources from the pulverized product by a magnetic force, and a wind force sorting step of sorting one valuable resource from another valuable resource in the valuable resources by a wind force.
RECYCLED POSITIVE ELECTRODE MATERIAL PRECURSOR, RECYCLED POSITIVE ELECTRODE MATERIAL, METHOD FOR PRODUCING SAME, AND RECYCLED LITHIUM ION SECONDARY BATTERY
Provided is a recycled positive electrode material precursor that includes a metal element α comprising at least one of nickel, cobalt, and manganese and a metal element β comprising at least one of iron, copper, and aluminum, wherein the content of the metal element β with respect to the recycled positive electrode material precursor is 0.5-20 mass%. The present invention also provides technology relating to the recycled positive electrode material precursor.
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
Provided is a method for separating lithium from a lithium solution containing lithium by 200 mg/L or more and fluorine by 20 mg/L or more, the method including: a first removal step of adding a first component, which solidifies the fluorine contained in the lithium solution, to the lithium solution and removing the fluorine solidified to obtain a F-removed liquid; and a second removal step of adding a second component, which solidifies the first component remaining in the F-removed liquid, to the F-removed liquid and removing the first component solidified to obtain a first component-removed liquid.
This sorting method for valuable materials includes: a heat treatment step for performing a heat treatment on a lithium ion secondary battery including valuable materials; a crushing step for crushing the heated treated object obtained in the heat treatment step; and classification steps including a first classification step for classifying the crushed object obtained in the crushing step into an intermediate product and a coarse-grained product at a classification point of 0.6-2.4 mm, and a second classification step for classifying the intermediate product into a medium-grained product and a fine-grained product at a classification point of 40-300 μm.
A method for processing a solar cell module, the method comprising: a preparation step for preparing a solar cell sheet-like structure, which comprises at least a solar cell, a metal pattern that is wired from the solar cell, a resin sealing material that seals the solar cell and the metal pattern, and a resin protection member that is provided on one surface of the sealing material, by removing a glass substrate and a frame member from a solar cell module; a fracturing step for forming fractured matter, which contains powders derived from the respective members, by fracturing the solar cell sheet-like structure; and a separation step for separating the powders according to type, namely into metals and resins, by subjecting the fractured matter to electrostatic separation and air classification.
A method for recovering valuable materials from a lithium ion secondary battery, the method including: a heat treatment step for heat-treating a lithium ion secondary battery containing aluminum, carbon, and copper foil as constituent materials; and a wet sorting step for applying external force, in the presence of a liquid, to the heat-treated material obtained in the heat treatment step, and separating heavy products from light products, including copper.
A method for recovering a valuable substance, the method including a heat treatment step for heat-treating a subject material containing a valuable substance via a flame isolation means that isolates a flame for heat-treating the subject material such that the flame does not come into contact with a subject-material-accommodating means in which the subject material is accommodated, and a valuable substance recovery step for recovering the valuable substance from the heat-treated subject material obtained through the heat treatment step.
Provided is a method for recovering a valuable substance, the method comprising: a heat treatment step for heat-treating an object including a valuable substance by using a continuous furnace, which heat-treats the object, while moving an object accommodating means in which the object is accommodated, and keeping the object accommodating means away from a flame for the heat treatment; and a valuable substance recovering step for recovering a valuable substance from a heat-treated object obtained by the heat treatment step.
A valuable matter recovery method comprising: a heat treatment step for heat-treating an object containing a valuable matter by supporting an object storage means that houses the object by means of a support means capable of supporting said object housing means and by heating a gas present in a region where the support means is located by means of a flame used to heat-treat the object in such a manner as to keep the flame out of contact with the object storage means; and a valuable matter recovery step for recovering the valuable matter from the heat-treated object obtained in the heat treatment step.
Provided is a treatment method that is for petroleum drilling produced water and that comprises: a step for subjecting petroleum drilling produced water to an aggregation/precipitation treatment, and thereby separating the produced water into clear water and precipitates; and a step for subjecting the clear water to an evaporation/condensation treatment to obtain condensed water that is allowed to be discharged and concentrated water in which oil components and the like are concentrated.
The present invention provides a method for recovering a valuable substance, by said method a valuable substance being recovered from a lithium ion secondary battery. This method for recovering a valuable substance comprises: a heat treatment step wherein a lithium ion secondary battery is subjected to a heat treatment, thereby obtaining a heat-treated material; a crushing/classifying step wherein a crushed material obtained by crushing the heat-treated material is subjected to classification, thereby obtaining a coarse grain product and a fine grain product, each of which contains the valuable substance; a water leaching step wherein the fine grain product is immersed in water, thereby obtaining a water leaching slurry; a wet magnetic separation step wherein the water leaching slurry is subjected to wet magnetic separation, thereby separating the water leaching slurry into a magnetically attracted material and a magnetically non-attracted material slurry; and an acid leaching step wherein an acidic solution is added to the magnetically non-attracted material slurry obtained by the wet magnetic separation and/or a magnetically non-attracted material obtained by subjecting the magnetically non-attracted material slurry to solid-liquid separation, and solid-liquid separation is performed after leaching the magnetically non-attracted material at a pH of less than 4, thereby obtaining an acid leachate and an acid leaching residue.
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
27.
METHOD FOR RECOVERING LITHIUM AND METHOD FOR PROCESSING LITHIUM ION SECONDARY BATTERY
The present invention provides a method for recovering lithium, and the like, said method for recovering lithium enabling recovery of lithium from a lithium ion secondary battery. This method for recovering lithium comprises: a heat treatment step for obtaining a heat-treated material by subjecting a lithium ion secondary battery, wherein a voltage of 80% or more relative to the rated voltage remains, to a heat treatment; a crushing step for obtaining a crushed material by crushing the heat-treated material; and a lithium recovery step for recovering lithium from the crushed material.
The present invention provides a method for concentrating a valuable metal contained in a lithium ion secondary battery, wherein a lithium ion secondary battery or a positive electrode material of the lithium ion secondary battery containing at least one of cobalt and nickel is treated so as to concentrate a valuable metal comprising at least one of cobalt and nickel. This method for concentrating a valuable metal contained in a lithium ion secondary battery comprises a heat treatment step wherein the lithium ion secondary battery or a positive electrode material thereof is subjected to a heat treatment, thereby forming a grain aggregate that contains at least one of cobalt and nickel, which are valuable metals.
Provided is a separation method for valuable resources, the method comprising: a heat treatment step for heat-treating an object containing valuable resources to melt aluminum and separate a molten material; a crushing step for crushing a heat-treated material left after separating the molten material to obtain a crushed material; a magnetic separation step, performed on the crushed material, for separating the valuable resources by magnetic force; and a wind separation step, performed on the valuable resources, for separating one valuable resource from another valuable resource by wind force.
B07B 7/01 - Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
B07B 9/00 - Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
B07B 15/00 - Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material
B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
A metal recovery method comprising a crushing step of crushing a solar battery module or a solar battery sheet-like structure to form a crushed material and a selection step of selecting the crushed material, wherein the method being characterized in that the solar battery sheet-like structure is a product produced by removing a glass substrate and a frame member from a solar battery module and provided with at least a solar battery cell, a metal pattern that is wired from the solar battery cell, and a sealing material that can seal the solar battery cell and the metal pattern.
A method for recovering a valuable material from a lithium ion secondary battery includes: a heat treatment step of performing heat treatment on a lithium ion secondary battery; a crushing step of crushing a heat-treated object obtained through the heat treatment step; a first stage of classification step of classifying a crushed object obtained through the crushing step based on a classification point of 1.2 to 2.4 mm, and a second stage of classification step of classifying an intermediate product and a fine particle product obtained on a fine side in the first stage of classification step based on a classification point of 0.3 mm or less; and a dry magnetic separation step of repeating one time or more a step of performing dry magnetic separation on an intermediate product obtained on a coarse side in the second stage of classification step and performing dry magnetic separation again.
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
B02C 19/18 - Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
B02C 23/10 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
B02C 23/16 - Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
B03C 1/30 - Combinations with other devices, not otherwise provided for
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
32.
Method for recovering valuable material from lithium ion secondary battery
There is provided a means capable of recovering a valuable material such as cobalt and nickel, with a low grade of a metal derived from a negative electrode current collector, a low grade of fluorine, and a low grade of a material derived from a negative electrode active material. A method for recovering a valuable material from a lithium ion secondary battery, is characterized in that it includes: a heat treatment step of performing heat treatment on a lithium ion secondary battery; a crushing step of crushing a heat-treated object obtained through the heat treatment step; a classification step of classifying a crushed object obtained through the crushing step into a coarse particle product and a fine particle product; and a wet magnetic separation step of performing wet magnetic separation on the fine particle product obtained through the classification step.
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 50/116 - Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
B03C 1/10 - Magnetic separation acting directly on the substance being separated with cylindrical material carriers
B02C 23/10 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
B02C 23/20 - Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
Provided is a method for separating lithium, with which lithium is separated from a lithium solution containing 200 mg/L or more of lithium and 20 mg/L or more of fluorine. The method includes: a first removal step for adding a first component, which solidifies fluorine contained in the lithium solution, to the lithium solution, removing the solidified fluorine and obtaining a fluorine-depleted liquid; and a second removal step for adding a second component, which solidifies the first component remaining in the fluorine-depleted liquid, to the fluorine-depleted liquid, removing the solidified first component and obtaining a first component-depleted liquid.
This method for treating an object to be treated is characterized by having: a methane fermentation step for decomposing organic matter in the object to be treated by means of a methane fermentation method to obtain methane fermentation treatment water; a step for oxidizing ammonia in the methane fermentation treatment water through the action of aerobes to make a nitric acid, and obtaining nitrified water by decomposing organic matter; and an evaporative concentration step for obtaining concentrated water and condensed water by evaporating and concentrating the nitrified water.
[Problem] To provide a method for regenerating used cerium oxide-based abrasive particles in which treatment can be performed using a small amount of chemicals without the use of fluorides, the method for regenerating used cerium oxide-based abrasive particles being such that degradation over time of the abrasive performance of the regenerated cerium oxide-based abrasive is reduced. [Solution] This method comprises: dispersing used cerium oxide-based abrasive particles in water to obtain a slurry; making alkaline the slurry containing the used cerium oxide-based abrasive particles; removing a coagulant or another chemical used to recover the abrasive; making the abrasive particles into a slurry again; rendering the pH thereof acidic, whereby the abrasive particles and glass microparticles generated by polishing are separated; and heat-treating the recovered abrasive particles, whereby the used cerium oxide-based abrasive particles are regenerated.
B24B 57/02 - Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
There is provided iron powder having a halogenated organic compound treating performance equivalent to or higher than that of a material for treating halogenated organic compounds, although an environmental load substance such as copper is not contained, and a method of producing iron powder for treating halogenated organic compounds including: immersing the iron powder in one or more kinds of solvents selected from water and organic solvents which have lower vapor pressure than water and contain oxygen; performing solid-liquid separation for the iron powder immersed in the solvent, to thereby obtain the iron powder wet by this solvent; and applying drying treatment to the iron powder wet in the solvent, while keeping a temperature at less than 40° C.
B09C 1/08 - Reclamation of contaminated soil chemically
C02F 1/70 - Treatment of water, waste water, or sewage by reduction
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
37.
Method for recovering valuable material from lithium-ion secondary battery, and recovered material containing valuable material
A method for recovering a valuable material from a lithium-ion secondary battery, the method contains: roasting a lithium-ion secondary battery containing a valuable material in a metal battery case thereof to obtain a roasted material; stirring the roasted material with liquid to separate contents containing the valuable material from the inside of the metal battery case; and sorting the contents separated by the separation and the metal battery case to obtain a recovered material containing the valuable material.
The decomposer need not contain copper and has the ability to satisfactorily decompose an organohalogen compound. A method for producing the decomposer is also provided.
A62D 3/34 - Dehalogenation using reactive chemical agents able to degrade
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/04 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
C09K 17/02 - Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
B09C 1/08 - Reclamation of contaminated soil chemically
C02F 1/72 - Treatment of water, waste water, or sewage by oxidation
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
The purpose of the present invention is to provide a recycling method which achieves a high removal efficiency for a silicon component and an aluminum component and thus makes it possible to recover simply a polishing agent having polishing performance equivalent to that of a fresh polishing agent from a spent cerium oxide-based glass-polishing agent. A recycling method for recovering a polishing agent from a spent cerium oxide-based glass-polishing agent, including adjusting the pH of a spent cerium oxide-based glass-polishing agent slurry to 0.5 to 3.0.
Provided is a method that easily recycles an abrasive agent having an abrasive performance equivalent to a pre-use new abrasive agent, and that has a high rate of elimination of silicon components and aluminum components from a used cerium oxide glass abrasive agent containing a flocculating agent. The method for recycling the abrasive agent from a used cerium oxide glass abrasive agent containing a flocculating agent includes a step for adjusting the pH of a slurry of the used cerium oxide glass abrasive agent containing a flocculating agent into the range of 10.0-14.0, and then adjusting the pH of the slurry into the range of 1.0-3.0.
B24B 57/02 - Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
B24B 37/00 - Lapping machines or devices; Accessories
Provided is a method for recovering valuable materials from lithium ion secondary cells, including: a heat treatment step for heating, to a temperature of 250ºC to 550ºC, lithium ion secondary cells having a positive electrode containing aluminum as the positive electrode current collector, and a negative electrode containing copper as the negative electrode current collector, to obtain a heated material; a sorting step for sorting the positive electrodes and the negative electrodes in the heated material; a crushing step for respectively crushing the positive electrodes and the negative electrodes sorted in the sorting step, to respectively obtain a crushed positive electrode material and a crushed negative electrode material; a first sieve sorting step for sieving out the crushed positive electrode material and recovering the aluminum; and a second sieve sorting step for sieving out the crushed negative electrode material and recovering the copper.
Provided is a method for recovering valuable metal from a liquid containing a valuable metal by, in an electrolysis tank that has a positive electrode and a cylindrical negative electrode and that holds the liquid containing the valuable metal, performing electrolytic recovery while rotating the cylindrical negative electrode, precipitating the valuable metal at the cylindrical negative electrode.
A method for recovering valuable material from a positive electrode in a lithium-ion secondary battery, that includes a processing step in which the positive electrode for the lithium-ion secondary battery including aluminum as a collector and including the valuable material is processed using a sodium hydroxide aqueous solution having a sodium hydroxide concentration of 2-40 mass%.
A method for recovering valuable material from a positive electrode in a lithium-ion secondary battery that includes a collector comprising aluminum and includes valuable material comprising at least either cobalt or nickel, said method including: a heating step in which the positive electrode in the lithium-ion secondary battery is heated to 500-600°C, preferably 590-610°C; and a sieve screening step in which the positive electrode after the heating step is sieve-screened using a sieve having mesh openings of no more than 2.0 mm, and recovered material containing the valuable material and having a collector content of no more than 2 mass% is obtained.
Provided is a lithium carbonate production method in which a solution that contains lithium ions and carbonate ions is electrified to precipitate lithium carbonate.
Provided is an iron powder which has an organic halogen compound processing performance equivalent to or higher than that of conventional organic halogen compound processing materials, without containing a substance such as copper that places burden on the environment. Also provided is a method for producing an iron powder for processing organic halogen compounds, which is characterized by comprising: a step wherein an iron powder is immersed in one or more solvents selected from among water and organic solvents that have lower vapor pressure than water and contain oxygen; a step wherein the iron powder immersed in the solvents is subjected to solid-liquid separation, thereby obtaining iron powder dampened with the solvents; and a step wherein the iron powder dampened with the solvents is dried, while being maintained at a temperature less than 40˚C.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
A62D 3/34 - Dehalogenation using reactive chemical agents able to degrade
A62D 3/37 - Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by reduction, e.g. hydrogenation
B09C 1/02 - Extraction using liquids, e.g. washing, leaching
B09C 1/08 - Reclamation of contaminated soil chemically
C02F 1/70 - Treatment of water, waste water, or sewage by reduction
A method for recovering a valuable material from a lithium-ion secondary battery, including: a roasting step for roasting a lithium-ion secondary battery including a valuable material in a metallic battery case, and obtaining a roasted material; a separating step for stirring the roasted material with a liquid and separating, from within the metallic battery case, a content containing the valuable material; and a sorting step for sorting the metallic battery case from the content that has been separated in the separating step, and obtaining a recovered material containing the valuable material.
The disclosed method for recovering a cerium oxide polishing agent involves at least a crushing step of mixing caked polishing-agent waste containing a cerium oxide polishing agent and polished glass debris with an acid aqueous solution or an alkali aqueous solution, and crushing the caked polishing-agent waste with a crushing machine.
B24B 57/02 - Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
H01L 21/304 - Mechanical treatment, e.g. grinding, polishing, cutting
49.
ORGANIC HALOGEN COMPOUND DECOMPOSITION AGENT CONTAINING IRON PARTICLES, AND PROCESS FOR PRODUCTION THEREOF
Provided are: a decomposition agent which needs not to contain copper, is composed of iron particles, and is capable of decomposing an organic halogen compound satisfactorily; and a process for producing the decomposition agent. The decomposition agent for an organic halogen compound comprises iron particles composed of iron and iron oxide, wherein the outermost surface layer of each of the iron particles has a metal iron content of 15 mass% or more when two rounds of ion beam etching are carried out under the following etching conditions: the degree of vacuum in a chamber: 2.0×10-2 Pa; the accelerating voltage of an ion gun: 10 kV; the emission current: 10 mA; and the etching time: 14 seconds.
The disclosed method sorts contaminated soil into gravel, coarse soil and fine soil without using water, and separates contaminants from the coarse soil easily and inexpensively. The soil cleaning method is characterized in that after a pre-treatment process of mixing dehydrating agent with the soil to reduce the water content to 10 mass% or less, the soil with water content reduced to 10 mass% or less in said pre-treatment process is fed into a dry magnetic separator and a magnetic separation process of separating and removing contaminants in the coarse soil as magnetic material is performed. Sorting the soil in a dry state into magnetic material and nonmagnetic material and recovering the magnetic material that is highly contaminated facilitates separation of fine soil from the contaminated soil and enables easy reduction of the contaminant content in the coarse soil.
A method for producing a decomposer of an organic halogenated compound comprises subjecting an iron powder produced beforehand to plastic deformation that gives the iron powder particles a flat shape. Further, an iron powder and a copper salt powder are mechanically mixed in a ball mill to produce a copper salt-containing iron particle powder in which the particles of the two powders are joined. In this case, the method for producing the decomposer of an organic halogenated compound is characterized in that the iron powder is mechanically deformed to give the particles a flat shape.
A decomposer of organic halogenated compounds comprises iron powder constituted of flat iron particles of a planar ratio of 2 or greater. Further, a decomposer of organic halogenated compounds comprises a copper salt-containing iron particle powder constituted of copper salt-carrying iron particles having a flat shape with a planar ratio of 2 or greater whose surfaces have adhered thereto copper salt particles that are finer than the iron particles.
Disclosed is an agent for decomposing an organic halogen-containing compound, which comprises an iron powder being composed of flat iron particles having a planar ratio of 2 or more. Further, disclosed is an agent for decomposing an organic halogen-containing compound which comprises a copper salt-containing iron powder being composed of iron particles having a copper salt adhered thereto wherein flat iron particles having a planar ratio of 2 or more have copper particles being finer than the iron particles adhered to the surface thereof.
A process for the production of an organohalogen compound decomposing agent by subjecting preliminarily produced iron powder to such plastic deformation as to give iron powder having flaky particle shape; and a process for the production of an organohalogen compound decomposing agent by mechanically mixing iron powder with a copper salt powder in a ball mill to form iron powder containing the salt through union of both powder particles, characterized in that the iron powder is subjected to such plastic deformation as to give iron powder having flaky particle shape.
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