METHOD FOR EXTRACTING RARE EARTH MATERIAL FROM MONAZITE

摘要

The present invention relates to a method for extracting rare earth elements from monazite. The method for extracting rare earth material from monazite according to the present invention comprises: a grinding/converting step of introducing a mixture of phosphoric acid, monazite that contains rare earth elements, and sodium hydroxide into a mill containing a plurality of balls, then colliding the balls and mixture together to grind the mixture into a powder, wherein the mixture is converted to a rare earth hydroxide and sodium phosphate via a reaction that occurs in the process of repeated collision; and an extraction step of extracting rare earth elements from the powder.