EnviroLeach Applied sciences has introduced the profitable completion of what it says is a complete lab and bulk pattern program utilizing its patented cyanide-free method on high-grade gravity desk tailings materials from a mid-tier gold producer.
Estimated gold recoveries from the majority pattern (2.7 t of fabric) averaged 97% and produced 277.eight ozof gold utilizing the EnviroLeach course of, which might successfully dissolve gold into aqueous resolution with comparable leach kinetics and economics to that of cyanide however is sustainable, protected and environmentally pleasant, in line with the corporate.
Following in depth lab and bench scale take a look at packages, a locked cycle, bulk take a look at program (leaching, filtering and electrowinning) was carried out on this 2.7 t bulk pattern of desk tails from the gold mining operation. The target of the majority take a look at program was to find out the efficacy and restoration charges of gold from the host materials utilizing EnviroLeach’s proprietary method and to gather key operational knowledge comparable to leach kinetics, chemical reusability, reagent consumption and prices, the corporate stated. The majority take a look at produced no tailings effluent, as all filtrate/liquids had been reused within the course of.
The take a look at outcomes report an total common estimated gold restoration of 97% and three gold bars had been produced having a mixed gold content material of 277.eight oz.
Duane Nelson, EnviroLeach CEO, stated: “This profitable bulk take a look at on these high-grade gravity tails clearly validates the proficiency of our patented method to supply a cheap, sustainable and environmentally pleasant extraction various to the gold mining sector.
“1000’s of gold mines around the globe depend on gravity-based focus. This bulk take a look at demonstrates that many of those mine operations may gain advantage from our eco-friendly extraction various.
“The adoption of the EnviroLeach course of may scale back the business’s reliance on the traditional cyanide and smelting strategies used at present and contribute to environmental sustainability throughout the gold mining sector.”