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process for recovery of reusable be recycled from scrap alloys of rare earth with iron and cobalt
process for recovery of reusable be recycled from scrap alloys of rare earth with iron and cobalt
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机译:从稀土废铁和钴的废合金中回收可重复利用的方法
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摘要
A method for recovering rare earth elements and cobalt from a rare earth-iron alloy containing cobalt is disclosed, including the steps of: preparing a slurry of the rare earth-iron alloy containing cobalt, adding a diluted nitric acid solution to the slurry with air being introduced into the slurry, while maintaining the pH of the resulting mixture at 5 or higher to dissolve metals including rare earth metals and cobalt at 50 DEG C or lower, and separating an undissolved residue containing iron from a rare earth-containing nitrate solution by filtration.
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