Method for recovering hafnium from hafnium oxide target waste

The invention belongs to the technical field of rare earth metal resource recovery, and discloses a method for recovering hafnium from hafnium oxide target waste. The method comprises the following steps: crushing a hafnium oxide target waste material, uniformly mixing the crushed hafnium oxide target waste material with carbon powder, and carrying out a chlorination reaction in a chlorination furnace to obtain crude hafnium tetrachloride; the method comprises the following steps: dissolving coarse hafnium tetrachloride in nitric acid, mixing an obtained hafnium solution of a mixed acid system with an extracting agent, and extracting to obtain hafnium-containing raffinate and a zirconium-loaded organic phase; the zirconium-loaded organic phase is mixed with pure water for reverse extraction, and a zirconium-containing solution is obtained; alkali is added into the hafnium-containing raffinate for precipitation, hafnium hydroxide is obtained and then calcined at the temperature of 700-900 DEG C, and a high-pur