Cyanide Free Gold Leaching Alternative
Aug 06, what is cyanide and why do we need cyanide-free gold leaching process? cyanide (cn –) has been used since to recover gold from hard rock. as sodium cyanide (nacn), it reacts with gold, oxygen (o), and water (h 2 o) to form a gold cyanide complex (na [au(cn) 2] ) and sodium hydroxide (naoh). the chemical reaction dubbed the “elsner equation”, named after its discoverer, is.