Method for Recovering Indium
    2.
    发明申请
    Method for Recovering Indium 审中-公开
    回收铟的方法

    公开(公告)号:US20080190779A1

    公开(公告)日:2008-08-14

    申请号:US11883138

    申请日:2006-01-27

    IPC分类号: C25C1/22

    摘要: There is provided a method for recovering indium, the method being capable of recovering indium having a high purity at simple and inexpensive steps in a short time and with a high recovery. After indium containing substances, such as ITO target scraps, are crushed, the crushed substances are ground until the percentage of coarse particles having a larger particle size than a predetermined particle size is not larger than a predetermined percentage. Thereafter, the ground substances are dissolved in an acid, and the solution thus obtained is neutralized with an alkali so that the pH of the solution is 0.5 to 4. Then, the solution is aged at a temperature of 60 to 70° C. for 3 hours or longer to deposit and remove hydroxides of predetermined metal ions in the solution. Then, hydrogen sulfide gas is blown into the solution to deposit and remove sulfides of metal ions which are harmful to electrolysis at the subsequent step, and thereafter, the solution thus obtained is used as an electrolytic solution for electrowinning indium metal to recover indium having a high purity.

    摘要翻译: 提供了一种回收铟的方法,该方法能够在短时间内以高回收率以简单且廉价的步骤回收具有高纯度的铟。 在将含铟物质如ITO靶材粉碎后,粉碎的物质被粉碎直到粒径大于预定粒径的粗颗粒的百分比不大于预定百分比。 然后,将研磨物质溶解在酸中,将得到的溶液用碱中和,使溶液的pH为0.5〜4。然后,将溶液在60〜70℃的温度下老化, 3小时或更长时间以沉积和除去溶液中预定金属离子的氢氧化物。 然后,将硫化氢气体吹入溶液中以沉积并除去在随后的步骤中对电解有害的金属离子的硫化物,然后将所得溶液用作电解沉积铟金属的电解液,以回收具有 高纯度