ABSTRACT The substances which are containing cyano (CN) group are called cyanide. There are two types of cyanide substances: organic cyanides and inorganic cyanides. Inorganic cyanides have negatively charged ions, like sodium cyanide, copper(i) cyanide and ferrocyanide, on the other hand, like methyl cyanide, organic cyanides includes covalent cyano group (MacLennan and Moiemen, 2015). Main purpose of production of cyanide is for the mining of silver and gold. Cyanidation process purpose is to extract gold from ores which are low graded by a hydrometallurgical technique which basically is a conversion process of gold into a complex that can be soluble in water.