| 摘要 |
<p>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 PH OF A RESULTING MIXTURE AT 5 OR HIGHER TO DISSOLVE METALS INCLUDING RARE EARTH METALS AND COBALT AT 50 °C OR LOWER, AND SEPARATING AN UNDISSOLVED RESIDUE CONTAINING IRON FROM A RARE EARTH-CONTAINING NITRATE SOLUTION BY FILTRATION.</p> |
