METHOD FOR CONCENTRATING ZINC FROM ELECTRIC ARC FURNACE DUST USING TRIBOELECTRIC CHARGING

摘要

PURPOSE: A method for concentrating zinc from electric arc furnace dust using triboelectric charging is provided to reduce reclamation cost of the electric arc furnace dust by simply concentrating zinc that is a valuable metal from dust generated in the electric furnace steelmaking process, thereby recycling the concentrated zinc as zinc concentrate. CONSTITUTION: The method comprises first step of triboelectric charging electric arc furnace dust; and second step of passing the triboelectric charged electric arc furnace dust through a space between a cathode material and an anode material to which a voltage of 3,000 to 30,000 V is impressed, wherein high zinc concentrated dust is obtained by alternately performing the first and second steps for one or more times, wherein the triboelectric charging is carried out by one method selected from flowing, transferring, spraying, collision and vibration, wherein the triboelectric charging is performed by friction between the electric arc furnace dust and a material selected from the group consisting of copper, acryl, iron, stainless steel, galvanized steel product, aluminum and plastic material, and wherein the triboelectric charging is performed by collecting high zinc concentrated dust in a region adjacent to a cathode part after supplying the electric arc furnace dust to an inclined vibrating plate formed of copper material so that the electric arc furnace dust passes through the space between the cathode material and the anode material.