｜While the price of Gold continues to hike as a response to economic uncertainty amidst Covid-19, here is a patent on a method of recovering gold from waste sources, in particular waste electrical goods. The US9689054B2 discloses a method in which gold leaching chlorine gas is generated externally to a reactor vessel and subsequently pumped into the reactor vessel comprising the waste gold materials. The chlorine gas, the substrate comprising gold, and moisture present in the vessel interact to provide a gold solution. ｜

🌐 https://patents.google.com/patent/US9689054B2/en