Study of the process for gold hydrochlorination in gold-containing magnetic fraction processing

Recycling gold and copper from waste printed circuit boards using chlorination process

“…The leaching process with aqua regia could produce large amount of strong acid waste liquid, which results in serious pollution of the local environment. [10][11][12] Due to the higher dissolution rate, 13 non-polluting character 14,15 and selective leaching of different metals by controlling the redox potential, chlorination is a feasible alternative method for gold recovery. 16,17 Thus far, some research efforts have used chlorination as an alternative method.…”