Enhancement of resource recovery from retired tires: Extraction of copper and zinc resources

The disposal of scrap rubber, represented by retired tires, has achieved industrial achievements, but the handling brass-coated steel wire as a structural reinforcement in tires received little attention. A feasible and efficient method acquiring economical resources is proposed to extract copper zinc (Cu-Zn) from wire. With 20% ammonia, 10% hydrogen peroxide, liquid-solid ratio 10, brass coating almost completely dissolved 5 minutes. This technique may remedy challenge weak dissolving efficiency brought on dual phase microstructure brass. Electrochemical measurements density functional theory (DFT) simulations assist verifying that peroxide decreases resistance corrosion OH- O-2 solution are main contributors dissolution. In addition, AH effectively enhances α brass, which notably evident comparable works. effective strategy broadens application provides new for extracting Cu-Zn resources.