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E-mail: chemicals@dasenmining.com
Add：Xifeng Fourth Road,Hi-Tech Industry Zone, Xi'an ,China
Postal Code:710000
Tailings from gold plants can be recovered for cyanide
Time: 2023-03-17 Source: Writer:
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 least, significant cost savings compared to cyanide destruction, coupled with the introduction of legislation to seriously limit the discharge of cyanide to the environment in most gold-producing regions of the world, many companies are evaluating the cyanide recovery alternative.
There is arguably an even more compelling reason for mining companies to consider cyanide recycling. With the growing storm of negative public opinion that the use of cyanide in the mining industry is attracting – following several highly publicized spills over the last couple of years – the time has come for the gold industry to demonstrate environmental diligence and stewardship in the use of this commodity that is so vital for their industry. There is no doubt that the widespread implementation of cyanide recycling will reduce the impact of the cyanidation process on the environment, both by reducing the risk of spills (with less cyanide being transported from manufacturing plants to gold mines), and by reducing the loading of toxic and nontoxic metals and ions in the tailings.
Interest in the recovery of cyanide from gold and silver plant tailings has heightened in recent years.
This interest has been spurred by several factors:
• Increasingly stringent regulations throughout the gold producing world, governing discharge limits for free and total cyanide to tailings ponds and the environment.
• The increasing cost of active chemical treatment versus passive (natural degradation) treatment of tailing, to bring them in line with environmental regulations.
• The worldwide trend to processing of more complex gold ore bodies, which is usually accompanied by higher levels of cyanide consumptions and greater concentrations of cyanide (particularly the copper cyanide complex) in tailings.
The cost of recovering and recycling cyanide from tailings will generally be lower than the cost of purchasing new cyanide. When this cost benefit is added to the lower cost of tailings detoxification, a strong case can frequently be made for cyanide recovery.
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There is arguably an even more compelling reason for mining companies to consider cyanide recycling. With the growing storm of negative public opinion that the use of cyanide in the mining industry is attracting – following several highly publicized spills over the last couple of years – the time has come for the gold industry to demonstrate environmental diligence and stewardship in the use of this commodity that is so vital for their industry. There is no doubt that the widespread implementation of cyanide recycling will reduce the impact of the cyanidation process on the environment, both by reducing the risk of spills (with less cyanide being transported from manufacturing plants to gold mines), and by reducing the loading of toxic and nontoxic metals and ions in the tailings.
This interest has been spurred by several factors:
• Increasingly stringent regulations throughout the gold producing world, governing discharge limits for free and total cyanide to tailings ponds and the environment.
• The increasing cost of active chemical treatment versus passive (natural degradation) treatment of tailing, to bring them in line with environmental regulations.
• The worldwide trend to processing of more complex gold ore bodies, which is usually accompanied by higher levels of cyanide consumptions and greater concentrations of cyanide (particularly the copper cyanide complex) in tailings.
The cost of recovering and recycling cyanide from tailings will generally be lower than the cost of purchasing new cyanide. When this cost benefit is added to the lower cost of tailings detoxification, a strong case can frequently be made for cyanide recovery.
Follow us for more information about gold heap leaching pls contact:
Whatsapp:+8613319277356
Email: chemicals@oremagnetic.com