| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for recovering valuable metals such as nickel in high purity, by easily separating a binding material from scrap of laminated ceramic capacitors. <P>SOLUTION: This recovering method comprises crushing scrap of the laminated ceramic capacitors into pieces, leaching nickel into sulfuric acid, neutralizing the obtained post-leaching liquid in a range of pH 1-5, to precipitate the dissolved binding material, separating it, neutralizing the post-leaching liquid after the binding material has been precipitated and separated, in the range of pH 6-9 to precipitate nickel, separating the post-leaching liquid in which the binding material remains, and dissolving the obtained precipitates again in sulfuric acid to obtain a nickel solution. <P>COPYRIGHT: (C)2003,JPO</p> |
