CAJ | 학술논문

研究了从电子工业中产生的镀铜铁针中回收铜。用氨水和硫酸铵混合溶液作浸出剂，控制反应时间为120 min、总氨浓度为4 mol/L、氨铵量比为1∶1、空气流量为1 L/min、液固体积质量比为5∶1、搅拌速度为400 r/min、温度为40℃，结果表明，铜浸出率达99％，且铁针未受损伤。
연구료종전자공업중산생적도동철침중회수동。용안수화류산안혼합용액작침출제，공제반응시간위120 min、총안농도위4 mol/L、안안량비위1∶1、공기류량위1 L/min、액고체적질량비위5∶1、교반속도위400 r/min、온도위40℃，결과표명，동침출솔체99％，차철침미수손상。
Recovery of copper from copper-plated iron needle come from electronics industry was conducted .Using mixed solution of ammonia and ammonium sulphate with oxidation in air as leaching agent ,under the conditions of reaction time of 120 min ,total ammonia concentration of 4 mol/L , n(ammonia)/n(ammonium) of 1/1 ,air flow of 1 L/min ,the ratio between liquid volume and solid mass of 5∶1 ,stirring speed of 400 r/min ,temperature of 40 ℃ ,the leaching rate of copper can reach as high as 99% ,the iron needles is not damaged .