Method of and apparatus for treating a rare-earth mineral or concentrate

摘要

A rare-earth mineral or concentrate, e.g. monazite or bastnaseite or a mixed ore thereof, as a muddy mass or the pulverized rare- earth mineral or concentrate mixed with an aqueous solution of an electrolyte, e.g. sodium hydroxide, is subjected to induction heating to facilitate dissociation and reduction of the rare-earth mineral or concentrate.