PROCESS FOR RECOVERY OF NOBLE METALS FROM FUNCTIONALISED, NOBLE METAL-CONTAINING ADSORPTION MATERIALS

摘要

PURPOSE: A collecting method for precious metals from functionalized precious metal containing adsorbent materials is provided to effectively separate the precious metals from functionalized scavengers by dissolving the scavengers in an oxidized acid solution. CONSTITUTION: A collecting method for precious metals from functionalized precious metal containing adsorbent materials comprises the following steps: providing precious metal-containing composition which includes adsorbent; obtaining a composition by ashing the precious metal containing composition; obtaining precious metal contained residue by dissolving a part of the precious metal containing residue in the oxidized acid solution; and collecting the precious metal by reducing the precious metal salt. In the first step, the adsorbent is set as a base material and is functionalized by organic group. In the second step, the carbon residue content is adjusted under 10wt% based on the total weight of the precious metal containing composition after ashing.