| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a valuable metal recovery method of a water-based positive electrode material paste capable of recovering valuable metals efficiently from a water-based positive electrode material paste. <P>SOLUTION: An active material, a conductive material and a binder are aggregated by admixing a flocculant to a water-based positive electrode material paste, and then an aggregated object and a non-aggregated object are separated. The flocculant is an inorganic flocculant having an ionic valence of 2 or more. Since a flocculant of high ionic valence has high aggregation effect, an active material, a binder and a conductive material can be separated efficiently from a thickener and a dispersant. Since it is an inorganic flocculant, an organic material is not taken into an aggregated object, and problems due to an organic material can be prevented from occurring in a reuse process. <P>COPYRIGHT: (C)2013,JPO&INPIT |
