PROCESS FOR THE SELECTIVE RECOVERY OF LEAD AND SILVER

Abstract The present invention relates to a process for the selective and ecoefficient recovery of lead and silver jointly as a concentrate product from metallurgical residues. The main advantage over the state-of-art is that concentrates of silver and lead can be recovered simultaneously from metallurgical residues in only three overall steps including a purification step that can reduce the content of chloride contaminants to as low as 0.01% on a dry weight basis. This method avoids further metal separation steps and represents an economically viable process to selectively obtain silver and lead in one concentrate without the need for high-cost equipment. Date Recue/Date Received 2021-04-21 La présente invention concerne un procédé de récupération sélective et éco-efficace de plomb et d'argent, le plomb et l'argent étant récupérés conjointement sous forme de produit concentré, à partir de résidus hydrométallurgiques.