CAJ | 학술논문

以氨浸法从含砷石灰铁盐渣中回收铜，研究从该类废渣中回收铜的可行性、工艺条件和动力学。结果表明：氨水和碳酸铵组成的浸取体系为适宜的浸取剂，当总氨浓度为5 mol/L、与铵盐浓度比为2：3、液固比为4：1时，铜的浸出率达到60.80%。动力学研究表明：铜的浸出过程在288~328 K内符合“未反应核缩减”模型，浸出过程主要受内扩散步骤控制，经拟合获得浸出动力学方程，浸出表观活化能为41.12 kJ/mol。
이안침법종함신석회철염사중회수동，연구종해류폐사중회수동적가행성、공예조건화동역학。결과표명：안수화탄산안조성적침취체계위괄의적침취제，당총안농도위5 mol/L、여안염농도비위2：3、액고비위4：1시，동적침출솔체도60.80%。동역학연구표명：동적침출과정재288~328 K내부합“미반응핵축감”모형，침출과정주요수내확산보취공제，경의합획득침출동역학방정，침출표관활화능위41.12 kJ/mol。
Copper was recovered from solid waste with arsenic by ammonia leaching method. The possibility of recovering copper, the optimal conditions and the kinetics from solid waste with arsenic by ammonia leaching method were investigated. The results show copper recovery rate achieve about 60.80%in a system composed of ammonia and ammonium carbonate with the total ammonia concentration of 5 mol/L, c(NH3):c(NH4+) of 2:3, L/S ratio of 4:1. Kinetics studies indicate that the leaching process follows the shrinking-core model in the temperature ranging from 288 K to 328 K, the leaching rate of copper is controlled by the inner diffusion of reactants during the leaching process, the leaching kinetics equation is established, and the apparent activation energy is 41.12 kJ/mol.