RZOLV Technologies Announces Independent SGS Lab-Scale Test Results on Gravity Concentrates - 98.7% Gold Recoveries
Vancouver, British Columbia--(Newsfile Corp. - January 12, 2026) - RZOLV Technologies Inc. (TSXV: RZL) (the "Company" or "RZOLV") today announced the results of independent metallurgical testing conducted by SGS Canada Inc. ("SGS") evaluating the performance of RZOLV's proprietary, non-cyanide gold leaching formula on gravity concentrate material.
The test program was carried out at SGS' Burnaby, British Columbia metallurgy laboratory and compared gold recovery achieved using RZOLV™ against conventional sodium cyanide under controlled bottle-roll leaching conditions.
The material tested consisted of both oxidized and sulfide-based gravity concentrates sourced from 2 separate gold projects located in Alaska. The material was prepared to a particle size of 80% passing 2 mm. The objective of the test work was to evaluate the technical performance of RZOLV™ relative to cyanide on high-grade gravity concentrate material, particularly in contexts where cyanide use may be constrained or less effective.
Under the specific laboratory test parameters evaluated by SGS, RZOLV™ achieved gold recoveries of 98.7% on oxide-based gravity concentrates and 89.4% on sulfide-based gravity concentrates over a 96-hour leach retention time. Under the same laboratory conditions, a reference solution containing 2,000 ppm sodium cyanide achieved gold recoveries of 99.9% and 90.7%, respectively.
The Company notes that results are specific to the material tested and the conditions applied. Further test work is ongoing to evaluate performance across a broader range of ore types, mineralogical characteristics, and operating conditions.
RZOLV™ continues to focus on third-party validation and disciplined test programs as it advances the evaluation of its technology for potential commercial applications.
Chart 1: Bottle Roll Leaching Recovery Results - (SGS)
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Figure 1: Bottle Roll Leaching Recovery Results - (SGS)
| Test | Reagent | Cal Head (g/t Au) | Residue (g/t Au) | Recoveries (%) | |||||||
| 1hr | 2hrs | 4hrs | 8hrs | 24 hrs | 48 hrs | 72 hrs | 96 hrs | ||||
| Oxide Cons | RZOLV | 339.0 | 4.280 | 21.6 | 32.2 | 41.5 | 57.7 | 86.3 | 97.9 | - | 98.7 |
| CN | 357.9 | 0.0 | 32.3 | 57.3 | 82.4 | 93.5 | 99.7 | 99.9 | 99.9 | 99.9 | |
| Sulphide Cons | RZOLV | 421.0 | 44.8 | 25.4 | 39.6 | 49.4 | 54.4 | 75.1 | 81.6 | 86.4 | 89.4 |
| CN | 433.2 | 40.4 | 46.8 | 62.0 | 77.6 | 82.2 | 89.1 | 90.7 | 90.7 | 90.7 | |
* Note: Results shown are derived from laboratory-scale bottle-roll testing under controlled conditions.

