Cyanide hazards to plants and animals from gold
Cyanide extraction of gold through milling of highgrade ores and heap leaching of lowgrade ores requires cycling of millions of liters of alkaline water containing high concentrations of potentially toxic sodium cyanide (NaCN), free cyanide, and metalcyanide complexes Some milling operations result in tailings ponds of 150 ha and larger Heap leach operations that spray or drip cyanide
Cited by: 190Cyanide Use in Gold Mining Earthworks
Kyrgyzstan, Kumtor Gold Mine, 1998: A truck carrying 2 tons of sodium cyanide crashed into the Barskoon river, resulting in more than 2,000 people seeking medical care Romania, Aural Gold , 2000 : A tailings dam ruptured, spilling 35 million cubic feet of cyanidecontaminated waste into the Tisza and Danube Rivers, killing fish and poisoning water supplies as far as 250 miles downriver in
Removal of cyanide from the gold cyanidation plant
· The adsorption experiments on the tailings of a gold cyanidation plant showed that the developed adsorbents were capable of removing more than 90% of cyanide from the real sample Introduction Cyanide compounds are extensively used in a number of applications including mineral processing, photographic, electroplating, steel and iron, plastic, jewellery and chemical industries
Author: S Shadman, M Massinaei, A Zeraatkar MoghaddamGold cyanidation (also known as the cyanide process or the MacArthurForrest process) is a hydrometallurgical technique for extracting gold from lowgrade ore by converting the gold to a watersoluble coordination complexIt is the most commonly used leaching process for gold extraction Production of reagents for mineral processing to recover gold, copper, zinc and silver represents
The ability to recover cyanide from gold plant tailings has been known almost as long as the cyanidation process has been practiced, but there has been little incentive to process tailings in this way in the past With the development of technologies that make it possible to recover and recycle free or complexed cyanide directly from gold plant slurry tailings, which indicates, on paper at

Gold Agitation Cyanidation Leaching cnlitereagent
· Compared with the CIP gold mining process and other traditional processes, the CIL gold mining process of the plant greatly shortens the cyanide operation time Taking the 75g/t gold ore cyanide plant with a capacity of 100,000 tons per month as an example, the CIL carbon leaching method saves investment costs of 486,000 US dollars compared with the CIP carbon slurry method, reducing