Recovery of yttrium from deep-sea mud

The novel process, which mainly including the following three parts: acid leaching, solvent extraction, and oxalic acid precipitation-roasting, could achieve the recovery of Y from deep-sea mud. Over the whole process, the Y yield was 82.04%, and the oxide of Y in which the purity of Y2O3/REO was 79.02% and the contents of major non-rare earth impurities were less than 0.21% was obtained.115