| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for recovering gold, by which gold can be recovered easily and inexpensively at a high yield from an aluminum base material, to which gold coating adheres, without damaging the base material. <P>SOLUTION: In the method for recovering gold, an aluminum base material, to which gold coating adheres, is added to a solution to start a reaction, the solution being obtained by adding a pH adjuster, such as dilute sulfuric acid, to a cyanogen-containing peeling liquid so that a pH of the solution is adjusted in a range of 5 to 8.5, and then, while adding a pH adjuster, such as dilute sulfuric acid, to the solution to maintain the pH in a range of 5 to 8.5, a cyanogen replenishing liquid is added in the solution to cause a reaction, thereby dissolving gold into the solution. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
