Post: Turning Tailings Into Treasure: How RZOLV’s Breakthrough Technology May Rewrite the Future of Gold Mining

RZOLV - Staff writer - November 23, 2025

For more than a century, the mining industry has lived with an inconvenient truth: the world is littered with billions of tonnes of gold-bearing tailings—immense landscapes of waste rock and slurry that contain not only trapped precious metals, but also the toxic legacy of cyanide, arsenic, and sulfide minerals. These sites pose long-term environmental liabilities, social risk, and regulatory pressure for governments and operators alike.

What if the industry could flip that equation? What if these liabilities could become revenue streams—and environmental cleanup could pay for itself?

RZOLV Technologies believes that future has arrived.

A Global Problem Hiding in Plain Sight

Around the world, tailings deposits quietly accumulate on the edges of mining districts—some more than a century old, some newly decommissioned, many sitting under regulatory scrutiny. Contained within are:

• 0.3–1.0 g/t of residual gold, often unrecoverable by cyanide

• Legacy cyanide compounds that persist for decades

• Reactive sulfides that generate acid mine drainage

• Arsenic minerals capable of leaching into water systems

Operators face significant pressure to stabilize these sites, mitigate environmental risk, and comply with tightening ESG and reclamation requirements. Yet remediation is expensive, and traditional metals recovery methods often fail to unlock enough value to justify the cost.

This is where RZOLV™ changes the equation.

The Breakthrough: Clean Hydrometallurgy That Does What Cyanide Cannot

RZOLV™ is a proprietary, water-based, non-cyanide gold leaching reagent engineered to work across complex mineralogies—including the very materials that defeat conventional cyanidation.

Unlike cyanide, which struggles with refractory sulfides, carbonaceous material, oxidized tailings, and arsenic-bearing minerals, RZOLV:

• Liberates Residual Gold From Legacy Tailings

  • RZOLV’s oxidative–reductive chemistry breaks down passivation layers and exposes gold surfaces—even those encapsulated within decades-old tailings sediments. Recovery yields of 80–99% have been demonstrated depending on mineralogy and particle size.

• Detoxifies Cyanide Residues

  • RZOLV actively neutralizes remaining cyanide compounds, reducing environmental liability while producing a stable, non-toxic solution.

• Converts Arsenic Into Permanent, Non-Leachable Forms

  • Through targeted reaction with selected additives, RZOLV immobilizes arsenic as ferric arsenate—a mineral form approved for long-term storage by global regulators.

• Rehabilitates Tailings While Recovering Value

  • The process simultaneously extracts gold and stabilizes the waste, meaning cleanup and revenue generation occur in a single operation.

  • This dual benefit is why environmental agencies, regulators, and mine operators increasingly view RZOLV not merely as a reagent—but as a remediation technology.

Why Tailings Are the Next Great Gold Frontier

There is more gold sitting above ground today—in tailings—than was mined annually prior to the 20th century. Analysts estimate tens of billions of dollars’ worth of recoverable metal locked in impoundments, particularly across the U.S., Canada, South America, Australia, and Africa.

Yet the industry has been missing a safe, economic method to unlock this value. RZOLV changes the calculus by offering:

• Higher payability vs. other alternatives

• Lower OPEX compared to cyanide detox + recovery circuits

• ESG-aligned reclamation that satisfies regulators

• Community-acceptable operations due to its non-cyanide chemistry

  
  

In a world where gold prices hit record highs and ESG scrutiny intensifies, tailings reprocessing is emerging as one of mining’s most compelling and responsible new revenue streams.

A Win–Win–Win: Economics, Environment, and Policy Alignment

For Mine Operators:

Recover revenue from previously uneconomic material while fulfilling reclamation obligations.

For Governments & Regulators:

Reduce long-term environmental risk without subsidizing cleanup.

For Communities:

Turn legacy mine sites into stabilized landscapes with lower toxicity and improved water protection.

RZOLV stands at the center of this alignment—delivering economic upside while addressing some of the industry’s most pressing environmental challenges.

The Future: Tailings as a Strategic Asset Class

As the mining industry transitions toward circularity and low-toxicity processing, RZOLV enables a new paradigm: tailings as a resource—not a risk.

Imagine a mining world where:

• Abandoned mine sites become profitable rehabilitation projects

• Governments contract private operators to clean up legacy districts

• Tailings management facilities shift from liabilities to balance-sheet assets

• New gold production increasingly comes from above-ground material rather than new disturbance

This is not a future decades away. This is a future already underway—and RZOLV is positioning itself as the technology that makes it possible.

Conclusion: Turning Waste Into Wealth

Mining has always been defined by innovation—from stamp mills to flotation, heap leaching to solvent extraction. RZOLV represents the next major innovation in that lineage: a clean, safe, high-performance reagent capable of monetizing the billions of tonnes of tailings the world has left behind.

This is more than a chemistry breakthrough. It is a new philosophy for the industry. A path forward where environmental responsibility and economic gain are not competing interests—but synergistic goals.

RZOLV is showing that the future of gold mining may not lie in deeper pits or new discoveries, but in reimagining the value hidden in the waste of the past.

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Disclosure and Cautionary Statement

This article has been published by RZOLV Technologies Inc. as part of its corporate communications and investor relations activities and reflects the views and opinions of management as of the date of publication. It is provided for general informational purposes only and does not constitute investment advice, an offer to sell, or a solicitation to buy securities. Certain statements in this article may constitute forward-looking information within the meaning of applicable Canadian securities laws and are subject to risks, uncertainties, and assumptions that could cause actual results to differ materially. Readers should not place undue reliance on such statements. The Company’s officers, directors, and insiders may hold securities of RZOLV and therefore have a financial interest in the Company’s performance. Readers are encouraged to review RZOLV’s public disclosure documents available on SEDAR+ for a discussion of material risks and assumptions. Neither the TSX Venture Exchange nor its Regulation Services Provider has reviewed or approved the contents of this article.