A method of processing NdFeB magnetic powder comprises: providing a source of hydrogenated NdFeB powder (101, 102, 103); feeding said powder into an inlet of a cyclone separator (104); separating the powder into an overflow enriched in Nd-rich grain boundary phase and an underflow enriched in Nd.sub.xFe.sub.yBH.sub.z matrix phase particles (106); optionally feeding the underflow back into the inlet of the cyclone separator whereby to further enrich the underflow in the Nd.sub.xFe.sub.yBH.sub.z matrix phase particles (108a); and collecting the underflow (108).

A method of processing NdFeB magnetic powder comprises: providing a source of hydrogenated NdFeB powder (101, 102, 103); feeding said powder into an inlet of a cyclone separator (104); separating the powder into an overflow enriched in Nd-rich grain boundary phase and an underflow enriched in Nd.sub.xFe.sub.yBH.sub.z matrix phase particles (106); optionally feeding the underflow back into the inlet of the cyclone separator whereby to further enrich the underflow in the Nd.sub.xFe.sub.yBH.sub.z matrix phase particles (108a); and collecting the underflow (108).

A method and a plant for the production of a powdery starting material, which is provided for the manufacture of rare earth magnets, are disclosed. First of all, at least one magnetic material, which is comminuted into a powdery intermediate product with a possibly increased concentration of impurities, and/or at least one alloy including rare earth metal are provided, which includes a low concentration of impurities. A classification of the powdery intermediate product to at least one criterion takes place subsequently, wherein, for the classification of the powdery intermediate product with the increased concentration of impurities, at least one dynamic classifier is provided, which divides the powdery intermediate product with impurities into at least two fractions based on the at least one criterion, wherein at least a high concentration of impurities accumulates in a first fraction and no impurities or at least a lower concentration of impurities than in the case of the first fraction accumulate in a second fraction, and wherein the fraction without impurities or with a low concentration of impurities forms the starting material for the manufacture of rare earth magnets.

A process for manufacturing a reclaimed alloy material includes the steps of crushing a magnetic core including an amorphous alloy ribbon; putting a prepared organic solvent and crushed pieces obtained in the step of crushing into a container and putting the crushed pieces into contact with the organic solvent in the container; selectively discharging the organic solvent from the container after putting the crushed pieces into contact with the organic solvent; and evaporating, after discharging the organic solvent, the organic solvent remaining in the container. The crushed pieces, removed from the container after the organic solvent is evaporated, is reused as a reclaimed alloy material.

A process for manufacturing a reclaimed alloy material includes the steps of crushing a magnetic core including an amorphous alloy ribbon; putting a prepared organic solvent and crushed pieces obtained in the step of crushing into a container and putting the crushed pieces into contact with the organic solvent in the container; selectively discharging the organic solvent from the container after putting the crushed pieces into contact with the organic solvent; and evaporating, after discharging the organic solvent, the organic solvent remaining in the container. The crushed pieces, removed from the container after the organic solvent is evaporated, is reused as a reclaimed alloy material.

A process for manufacturing a reclaimed alloy material includes the steps of crushing a magnetic core including an amorphous alloy ribbon; putting a prepared organic solvent and crushed pieces obtained in the step of crushing into a container and putting the crushed pieces into contact with the organic solvent in the container; selectively discharging the organic solvent from the container after putting the crushed pieces into contact with the organic solvent; and evaporating, after discharging the organic solvent, the organic solvent remaining in the container. The crushed pieces, removed from the container after the organic solvent is evaporated, is reused as a reclaimed alloy material.

A method of processing NdFeB magnetic powder comprises: providing a source of hydrogenated NdFeB powder (101, 102, 103); feeding said powder into an inlet of a cyclone separator (104); separating the powder into an overflow enriched in Nd-rich grain boundary phase and an underflow enriched in NdxFeyBHz matrix phase particles (106); optionally feeding the underflow back into the inlet of the cyclone separator whereby to further enrich the underflow in the NdxFeyBHz matrix phase particles (108a); and collecting the underflow (108).

A method to separate rare earth material from a rare earth magnet. At least one embodiment comprises a method that heats a provided rare earth magnet to at least 600 C. whereby the rare earth magnet absorbs a dry gas. Separated rare earth materials are created. Magnetic rare earth materials are produced from the separated rare earth materials.

A powder recycling system includes a supply tank, a continuous loss-in-weight module, a pneumatic module, a transfer channel, a recycle module, and a refilling tank. The supply tank accommodates recycling powder. The continuous loss-in-weight module includes a storage tank receiving the recycling powder from the supply tank and a rotary output pipe connected to the storage tank to output the recycling powder. The continuous loss-in-weight module controls the mass flow rate of the output of the recycling powder according to the weight change of the storage tank. The pneumatic module enables the recycling powder to float and move in the transfer channel. The recycle module is connected to the transfer channel to receive the recycling powder, sieves the recycling powder, provides virgin powder, and mixes the virgin powder with the recycling powder. The refilling tank is connected to the recycle module to receive the recycling powder and the virgin powder.

A powder recycling system includes a supply tank, a continuous loss-in-weight module, a pneumatic module, a transfer channel, a recycle module, and a refilling tank. The supply tank accommodates recycling powder. The continuous loss-in-weight module includes a storage tank receiving the recycling powder from the supply tank and a rotary output pipe connected to the storage tank to output the recycling powder. The continuous loss-in-weight module controls the mass flow rate of the output of the recycling powder according to the weight change of the storage tank. The pneumatic module enables the recycling powder to float and move in the transfer channel. The recycle module is connected to the transfer channel to receive the recycling powder, sieves the recycling powder, provides virgin powder, and mixes the virgin powder with the recycling powder. The refilling tank is connected to the recycle module to receive the recycling powder and the virgin powder.