Method for separating boron-containing solution from R (rare earth) -Fe-B magnet alloy sludge

摘要

PROBLEM TO BE SOLVED: To provide a method for separating boron from boron containing alloy sludge such as rare earth magnet alloy sludge by which boron can selectively and easily be separated from the alloy sludge with high efficiency without dissolving the whole of the sludge, and without dissolving a part of the alloy. SOLUTION: In the method for separating boron from the boron-containing alloy sludge, the boron-containing alloy sludge and an alkali aqueous solution are reacted, and boron is selectively eluted, and is thereafter separated.