EnviroLeach Technologies announced that new upgrades and enhancements to the EnviroLeach process have yielded positive results in a series of bulk tests.

The technology company and near-term gold producer is engaged in the development and commercialisation of environmentally-friendly formulas and technologies for the treatment of materials in the mining and e-waste sectors utilising its non-cyanide, near neutral pH treatment process to extract precious metals from ores, concentrates, and e-waste.

The modifications and enhancements to the EnviroLeach process, which included the addition of a proprietary 3 stage concentration process and minor formula modifications, have delivered significant improvements in performance and recoveries.

The company has completed several lab to pilot scale and full-scale tests to confirm the results of these modifications on various low to mid-grade circuit boards with positive results.

The results of the bulk testing indicate that the gold (Au) was almost evenly distributed between both the heavy (56 per cent) and light fractions (44 per cent), with all other metals predominantly reporting to the heavy (concentrate) fraction. The resulting concentrate represented approximately 30 per cent of the original mass with copper grades in the plus 80 per cent range, gold at 400 g/t, silver at 2,450 g/t and palladium at 150 g/t. The light fraction contained a gold grade of 185 g/t with recoveries in the EnviroLeach solution in the plus 80 per cent range.

EnviroLeach Technologies CEO, Duane Nelson, said that the recent bulk sample results exceeded the company’s expectations.

“We are confident we can replicate these results in our first 20 tonne per day concentrate plant currently under construction”, he said.

The Company also announced that its partner, Mineworx Technologies, has leased a facility in Vancouver, Canada to construct and assemble a 20 tonne per day e-waste concentrate plant. Both companies are preparing the facility for the arrival of the primary process equipment.

“These combined facilities will quadruple the capacity of Mineworx’ e-waste fabrication and production capabilities to almost 28,000 square feet,” Commented Greg Pendura, CEO. “This expansion now enables Mineworx to move quickly upon the site acceptance of the Memphis, Tennessee E-Waste processing plant to immediately expedite our business model in this dynamic sector.”

“I am very pleased with both the EnviroLeach and Mineworx teams’ continued ability to overcome the pioneering challenges we face in this relatively new sector. The team’s extensive experience in conventional mining, chemistry and metallurgical process has proven quite valuable in this fusion of technologies,” added Mr Nelson.

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