The invention discloses a method for preparing a high-purity
copper oxide powder material, belonging to the field of high-performance functional materials. The
raw material for preparing the high-purity
copper oxide powdery material is red
copper wires or red copper rods. The preparation method comprises the steps of
cutting recovered waste red copper wires or red copper rods into small pieces, heating the small pieces in a
rotary furnace embedded with a pure copper lining plate or high-temperature-resisting stainless copper lining plate, putting red copper balls into the
rotary furnace to serve as
grinding balls at the same time, starting to inflate
oxygen into the
rotary furnace when the rotary furnace is heated to a certain temperature to ensure that copper is in full contact with the
oxygen under a high-temperature condition to generate an oxidation reaction, and fully crushing
copper oxide generated through the reaction under the action of the
grinding balls at the same time, thereby obtaining the high-purity
copper oxide powder material. The method disclosed by the invention is simple in production process and low in production cost, and the oxidation of copper and the crushing of
copper oxide are performed at the same time, so that the process flow is effectively shortened. Impurities are not introduced during
processing and preparation, so that the obtained copper
oxide powder material is high in purity which can reach more than 99%.