A Two-Stage Non-Cyanide Hydrometallurgical Approach for Reprocessing Legacy Cyanide Leach Pads and Tailings - Alkaline electrochemical cyanide reduction followed by low-pH RZOLV recovery of residual precious metals Reza Kafaei, Hanif Jafari, and Duane Nelson RZOLV Technologies Inc. Technical discussion draft, May 2026 Abstract Legacy cyanide tailings, spent heap-leach pads, and previously leached precious-metal residues constitute a combined environmental liability and residu

RZOLV’s potential role in cleaner critical-minerals recovery from secondary streams, residues, and complex concentrates Reza Kafaei, Hanif Jafari, Duane Nelson: - RZOLV Technologies May 5th, 2026 – 15 pages Abstract RZOLV Technologies is best known for its non-cyanide precious-metals recovery platform, but recent screening results suggest that the chemistry may have broader relevance across selected critical minerals, rare earth elements, heavy rare earths, technology metals,