EnviroGold Highlights Sustainable Metal Reprocessing Benchmarks at Hellyer and Buchans Tailings Projects


Posted by Daniel Gleeson on March 9, 2022

According to EnviroGold Global Limited, the precious (gold, silver) and battery (copper, zinc, lead) metals that will be produced at the company’s Hellyer Tailings and Buchans Tailings reprocessing projects are expected to show a 96% reduction in intensity. greenhouse gas (GHG) emissions per equivalent gold ounce produced and an over 80% reduction in energy intensity compared to industry averages for conventional mining.

EnviroGold Global’s circular economy business model is designed to produce precious, critical and strategic metals while reprocessing mining waste (tailings), which often contains significant quantities of precious, critical and strategic metals.

EnviroGold Global’s analytical approach to project origination and development relies on extensive mine production data, mill production data and geological records to identify tailings sites that are expected to contain significant amounts of residual metals due to refractory mineralogy and/or inefficiency of obsolete technology used in legacy mining operations. In addition to recovering precious, critical and strategic metals, the company says it repairs tailings in accordance with best environmental practices, thereby reducing the environmental footprint of legacy mining. Additionally, by eliminating the extractive (mining) phase of metal production, the company hopes to reduce the energy intensity of metal production by more than 80%.

Building on the framework established by the World Resources Institute’s Greenhouse Gas Protocol, EnviroGold Global’s detailed assessments of predicted Scope 1 and Scope 2 emissions for the company’s planned operations in the projects Hellyer Tailings and Buchans Tailings report that the carbon intensity of gold equivalent ounces of precious, critical and strategic metals produced by the company will be 96% lower than industry averages for conventional mining. S&P Global Market Intelligence reports that typical conventional mining operations generated nearly 1 tonne of CO2 per ounce of gold produced.

Last month, EnviroGold Global signed a binding definitive agreement with Hellyer Gold Mines Pty Ltd to reprocess HGM-owned tailings at its namesake mine in Tasmania, Australia (pictured). Hellyer is owned by NQ Minerals, with the company planning to increase its production for the year to 1.5 Mt of tailings reprocessing in 2022, from an estimated 1.4 Mt in 2021. Earlier this month, EnviroGold said announced that test work completed to date on its proprietary flowsheet has demonstrated gold recoveries of 83.5% and silver recoveries of 94.6% from tailings refractory volcanogenic massive sulphides at Hellyer.

In 2021, it announced the execution of binding commercial agreements, which saw the Buchans River Delta Reclamation Project added to its portfolio of environmental remediation and asset restoration projects. , saying it plans to deploy proprietary modular and scalable reclamation technology and systems capable of processing 1,000 tpd of reclaimed tailings to remediate legacy tailings while removing environmental contaminants and recovering waste products. value on the project.

EnviroGold Global CEO Dr. Mark Thorpe said: “Whether they serve as critical components for batteries, electric vehicles and clean energy infrastructure, or as a store of value and inflation hedge. , metals have never been more essential to the modern global circular. economy. EnviroGold Global’s Metals Without Mining business model is designed to sustainably satisfy the growing global demand for precious, critical and strategic metals by eliminating the most carbon and energy intensive phases of metal production, creating a win-win for businesses, communities and environmental stakeholders.

The Global Tailings Review reports that the total number of active, inactive and closed tailings storage facilities worldwide exceeds 8,500. The global tailings footprint exceeds 280,000 Mt with an additional 12,700 Mt produced each year. The value of precious, critical and strategic metals contained in global tailings sites is estimated at over $3.4 trillion.

EnviroGold Global’s business strategy is to identify, qualify and develop tailings reprocessing opportunities, typically targeting tailings sites containing at least 6 Mt of tailings and gross metal recoverable value of $124/t of tailings. Tailings sites that meet EnviroGold Global’s internal evaluation criteria go through an advanced screening process, which includes detailed techno-economic modeling incorporating expected recovery rates and site-specific process-level economic analysis.

To date, the company has reviewed more than 325 tailings sites worldwide and has eight “major projects” in its global tailings reprocessing portfolio. EnviroGold Global plans to begin commercial metal production in 2022 at its Hellyer Tailings reprocessing project. The Company will continue to acquire the rights to tailings reprocessing opportunities worldwide and, following the completion of commercial metals production at the Hellyer Project, will leverage strategic operating partnerships to increase commercial metals production on several projects simultaneously.


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