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method for the smelting of rare earth alloy scrap and / or mud for r - fe - b magnet
method for the smelting of rare earth alloy scrap and / or mud for r - fe - b magnet
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机译:r-fe-b磁铁的稀土合金废渣和/或泥冶炼方法。
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摘要
Rare earth magnet scrap and/or sludge is remelted for reuse. Once a rare earth-free magnet-constituent metal feed is loaded in a melting furnace and heated into a melt, a rare earth-containing metal feed and the rare earth magnet scrap and/or sludge are added to the melt, a particulate flux of an alkali metal, alkaline earth metal or rare earth metal halide and having an average particle size of 1-50 mu m, preferably wrapped in a metal foil, is added to the melt, and the resulting mixture is melted, from which an alloy ingot is obtained. The valuable elements in the scrap and/or sludge can be recycled. Better separation between the slag and the molten metal ensures that the ingot is obtained from the melt in a high yield.
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