NOVELTY - Nickel oxide ore and sulfuric acid are mixed and solid-liquid separated (S1), to obtain leachate and leaching residue. Neutralizing agent (S2) is added to leachate, to obtain neutralized precipitate and neutralized liquid. Sulfidizing agent is added (S3) to neutralized liquid to separate nickel sulfide and sulfidized liquid, and sulfidized solution is contacted with chelate resin to adsorb (S41) scandium onto resin, to obtain scandium eluent. Scandium eluent is contacted with extracting agent and processed, to obtain precipitate which is dried and calcined, to obtain scandium oxide.    USE - Method of recovering high-quality scandium from nickel oxide ore used as additive of high-strength alloy, and electrode material of fuel cell.    ADVANTAGE - The method efficiently and economically recovers high-quality scandium from nickel oxide ore.    DETAILED DESCRIPTION - Nickel oxide ore and sulfuric acid are added into a pressurized container and solid-liquid separated at high temperature and high pressure, to obtain leachate and leaching residue. A neutralizing agent is added to the leachate, to obtain a neutralized precipitate and neutralized liquid. Then, a sulfidizing agent is added to the neutralized liquid to separate nickel sulfide and sulfidized liquid, and sulfidized solution is contacted with a chelate resin to adsorb scandium onto the chelate resin, to obtain scandium eluent. The scandium eluent is contacted with an extracting agent, to obtain back-extraction liquid, and neutralizing agent or oxalic acid is added to the back-extraction liquid, to obtain a precipitate. The precipitate is dried and calcined, to obtain scandium oxide.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view explaining the method of recovering high-quality scandium from nickel oxide ore. (Drawing includes non-English language text)    Solid-liquid separation step (S1)    Neutralizing step (S2)    Sulfidizing step (S3)    Ion-exchange step (S4)    Adsorbing step (S41)