CAJ | 학술논문

利用生物浸出的方法实现废覆铜板分选渣中残留铜的资源化，主要研究Fe2+物质添加量、浸出时间、初始pH和渣投加量(固形物含量)等因素对不同来源废覆铜板渣中铜生物浸出的影响。结果表明：生物浸出铜过程中无需额外再添加Fe2+能源物质且能够短时间内(≤5 h)快速高效浸出不同来源分选残渣中的铜；初始pH和渣投加量对废覆铜板渣中铜浸出产生显著影响。优化结果表明：控制初始pH≤2.2，渣投加量20%~30%，无额外添加酸和Fe2+，两种分选残渣生物浸出5 h后，铜浸出率可达95%以上。
이용생물침출적방법실현폐복동판분선사중잔류동적자원화，주요연구Fe2+물질첨가량、침출시간、초시pH화사투가량(고형물함량)등인소대불동래원폐복동판사중동생물침출적영향。결과표명：생물침출동과정중무수액외재첨가Fe2+능원물질차능구단시간내(≤5 h)쾌속고효침출불동래원분선잔사중적동；초시pH화사투가량대폐복동판사중동침출산생현저영향。우화결과표명：공제초시pH≤2.2，사투가량20%~30%，무액외첨가산화Fe2+，량충분선잔사생물침출5 h후，동침출솔가체95%이상。
Recycling of the flotation tailings of waste copper-clad laminates was achieved by bioleaching method, the effects of Fe2+ re-addition, leaching time, initial pH and pulp density on the copper extraction were investigated. The results show that an effective copper extraction can be achieved without re-addition of Fe2+within 5 h. The initial pH and pulp density play important roles in copper extraction. Under the optimized condition of initial pH≤2.2 and pulp density 20%?30%, the Cu leaching rate is more than 95%in 5 h without re-addition of Fe2+and acid.