GOLD RECOVERY PROCESS

摘要

A process for recovering gold from a concentrate such as electrolytic sludge, a zinc-gold precipitate, general gold scrap or a gravity concentrate. The concentrate is leached in HCl solution with gaseous chlorine to dissolve the gold and base metals and gold is then precipitated from a solution separated from a slurry produced by the leaching process. The chlorine is generated on site if the gold content of the slurry is > 1%, while bottled gas is used if the gold content is > 10%.