METHOD OF RECOVERING CATALYTIC METAL

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PROBLEM TO BE SOLVED : To recover a catalytic metal which is a structural component of a chalcogen element-containing catalyst, from the used chalcogen element-containing catalyst nonpollutingly, and at the same time, to reuse efficiently the rare and expensive catalytic metal. SOLUTION : The method of recovering the catalytic metal from the chalcogen element-containing catalyst is provided. The method comprises the removing process of a chalcogen element component by heating the electrode catalyst in a hydrogen-containing inactive gas to remove the chalcogen element in the electrode catalyst, the carbon component removing process of immersing the electrode catalyst in hot aqua regia to remove the carbon component, and the process of recovering the metal component solved in the aqua regia and at the same time, recovering other metal components from the deposit not solving in the aqua regia. COPYRIGHT : (C)2009, JPO&INPIT