
Cyanide-free, economically viable
THE recovery of gold using cyanide in pulp or leach is the industry standard for most gold mining producers. However, the use of cyanide comes with many direct and hidden costs and its continued use is drawing more and more scrutiny from mining commissions, environmental regulators and proximal communities around the world. There are several alternatives to cyanide leaching already on the market but these can often be suited to particular ore types and gold particle size and may not be as economical or effective as cyanide in every application. In June 2019, Clean Mining launched a new cyanide-free gold processing solution. This innovative, cost-effective process replaces cyanide with a safer, less hazardous chemical reagent, thiosulphate. This inorganic compound helps…