The solution containing gold is called a pregnant solution, and by adding metallic carbon or activated carbon to the solution, gold can be extracted. Gold recovery from cyanide solution is an old method; it is very low-cost and economical.

This method is used to extract gold from highly diluted cyanide solutions. Sodium cyanide dissolves in water and gives it acidic properties, in which gold dissolves in the sodium cyanide solution. The solution containing gold is called a pregnant solution, and by adding metallic carbon or activated carbon, gold can be recovered from the solution.

Human Pouyan Mining & Mineral Trading Company as the exclusive representative of Chemstar China is ready to supply all products in the processing, drilling, and extraction sector to Iranian miners and industrial owners. The company is also prepared to provide various customized equipment for domestic consumers.