A method for recycling electrode materials of lithium ion batteries, including the following steps: (1) disassembling the waste lithium ion battery to get positive electrode and negative electrode, immersing the positive electrode and/or the negative electrode into ammonia, then washing by deionized water and drying the positive electrode and/or the negative electrode; (2) sintering the dried positive electrode and/or the negative electrode, and using mechanical method to separate electrode powder material from current collector to get positive electrode powder material and/or negative electrode powder material; (3) supplementing lithium to the positive electrode powder material, then processing the positive electrode powder material by milling, spray drying and sintering to obtain regenerated positive electrode material; or processing the negative electrode powder material by milling, spray drying and sintering to obtain regenerated negative electrode material. The method has advantages of energy saving, simple operation, short processing time and less pollution.

A method for recycling electrode materials of lithium ion batteries, including the following steps: (1) disassembling the waste lithium ion battery to get positive electrode and negative electrode, immersing the positive electrode and/or the negative electrode into ammonia, then washing by deionized water and drying the positive electrode and/or the negative electrode; (2) sintering the dried positive electrode and/or the negative electrode, and using mechanical method to separate electrode powder material from current collector to get positive electrode powder material and/or negative electrode powder material; (3) supplementing lithium to the positive electrode powder material, then processing the positive electrode powder material by milling, spray drying and sintering to obtain regenerated positive electrode material; or processing the negative electrode powder material by milling, spray drying and sintering to obtain regenerated negative electrode material. The method has advantages of energy saving, simple operation, short processing time and less pollution.

Systems and methods for material handling in additive manufacturing systems are provided. Environmental control can decrease exposure of a powder to substances that change a material property of the powder and/or that change a property of a build piece formed from fusing the powder. Powders can be mixed for use in PBF systems. For example, a powder that has been through a printing operation can be reused by mixing the reuse powder with new powder. Powder can be recovered after a printing operation and reused, recycled into new powder, etc. Powder can be decontaminated for better reusability.

A manufacturing process includes collecting metal chips produced by a subtractive manufacturing processes and sorting the metal chips. The process further includes heating the metal chips to form a melt, removing impurities from the melt, deoxidizing the melt and atomizing the melt to form metal powder. The powder is then used to form a metal part by additive manufacturing or powder metallurgy processes.

A method for recovery of at least one cemented carbide body from a component including the steps of first clamping the component in a clamping device, and then simultaneously or cyclically heating and vibrating the component to dislodge the at least one cemented carbide body from the component. Also provided is an apparatus for the recovery of at least one cemented carbide body from a component having an axial axis, the apparatus including a vibrating device arranged for vibrating the component in a vertical direction with respect to the axial axis, a clamping device arranged for positioning the component so that the cemented carbide bodies are vibrated in a vertical direction with respect to the axial axis, and at least one heating device arranged for heating of the component at the same time as vibrating the component.

A method for recovery of at least one cemented carbide body from a component including the steps of first clamping the component in a clamping device, and then simultaneously or cyclically heating and vibrating the component to dislodge the at least one cemented carbide body from the component. Also provided is an apparatus for the recovery of at least one cemented carbide body from a component having an axial axis, the apparatus including a vibrating device arranged for vibrating the component in a vertical direction with respect to the axial axis, a clamping device arranged for positioning the component so that the cemented carbide bodies are vibrated in a vertical direction with respect to the axial axis, and at least one heating device arranged for heating of the component at the same time as vibrating the component.

An object of the present invention is to provide a method for producing an alloy recycled material by effectively removing carbon from a carbon-containing alloy, which is produced as scrap or sludge of an RFeB based permanent magnet, a used magnet, or the like. The method of the present invention as a means for resolution is characterized in that a carbon-containing RFeB based permanent magnet alloy is subjected to an HDDR treatment to remove carbon. An alloy recycled material produced by the method of the present invention contains a reduced amount of carbon. Therefore, in the case where it is recycled for the production of a magnet, even when an increased amount is subjected to high-frequency heating in a vacuum melting furnace, a non-negligible increase in the amount of carbon contained in the produced magnet can be avoided.

An object of the present invention is to provide a method for producing an alloy recycled material by effectively removing carbon from a carbon-containing alloy, which is produced as scrap or sludge of an RFeB based permanent magnet, a used magnet, or the like. The method of the present invention as a means for resolution is characterized in that a carbon-containing RFeB based permanent magnet alloy is subjected to an HDDR treatment to remove carbon. An alloy recycled material produced by the method of the present invention contains a reduced amount of carbon. Therefore, in the case where it is recycled for the production of a magnet, even when an increased amount is subjected to high-frequency heating in a vacuum melting furnace, a non-negligible increase in the amount of carbon contained in the produced magnet can be avoided.

An object of the present invention is to provide a method for producing an alloy recycled material by effectively removing carbon from a carbon-containing alloy, which is produced as scrap or sludge of an RFeB based permanent magnet, a used magnet, or the like. The method of the present invention as a means for resolution is characterized in that a carbon-containing RFeB based permanent magnet alloy is subjected to an HDDR treatment to remove carbon. An alloy recycled material produced by the method of the present invention contains a reduced amount of carbon. Therefore, in the case where it is recycled for the production of a magnet, even when an increased amount is subjected to high-frequency heating in a vacuum melting furnace, a non-negligible increase in the amount of carbon contained in the produced magnet can be avoided.

A method and a device for recovering hydrogen pulverized powder of a raw-material alloy for rare-earth magnets capable of lowering the possibility that hydrogen pulverized powder remains in a recovery chamber; therefore, enhancing magnetic properties by reducing an oxygen content of an obtained rare-earth magnet. A processing container 50 is carried into a recovery chamber 40 from a processing chamber after inert gas is introduced into the recovery chamber 40. The raw-material alloy for rare-earth magnets in the processing container 50 is discharged into the recovery chamber 40 after the pressure in the recovery chamber 40 is reduced Thereafter, inert gas is introduced into the recovery chamber 40, and the raw-material alloy for rare-earth magnets is recovered into the recovery container 50 after a pressure in the recovery chamber 40 is set to a predetermined pressure by inert gas.