China Nonferrous Metallurgy

The precipitated gold solution from the copper anode slime treatment process in the smelter of Daye Nonferrous Metals Co. Ltd. contains a small part of Au and most of Pt and Pd. In order to improve the recovery rate of precious metals, the company chose to recover precious metals directly from the precipitated gold solution and carried out a large number of experiments. The adsorption of F-resin on Au, Pt, Pd noble metal ions in gold precipitation solution was studied by two-stage exchange column equipment, and the following conclusions were reached. The adsorption effect of F-resin on Pt ion is general, and the adsorption effect on Au ion and Pd ion is better; in the range of 0~300h, the adsorption of Au and Pd ions in the primary resin exchange column is better; in the range of 120~300h, the adsorption of Pt ions in the secondary exchange column is better; between 120 and 430h, the ion concentration of Au and Pd in the solution after adsorption by secondary exchange column resin is very low; temperature and flow rate have little effect on the adsorption of Pd by F resin; reducing the flow rate and increasing the adsorption temperature of the raw solution can improve the adsorption effect of F-resin on Pt ions.