RZOLV Reports Preliminary Positive Laboratory Results for Sequential Copper and Gold Extraction from Selected Low-Grade Copper-Gold Samples

About this update from Rzolv Technologies Inc.

Initial laboratory-scale bottle-roll tests returned calculated-head gold recoveries of 82.3% to 94.8% and copper extraction of 71% to 80%, supporting further evaluation of a feed-specific copper pretreatment and RZOLV gold-leach pathway. Vancouver, British Columbia--(Newsfile Corp. - June 29, 2026) - RZOLV Technologies Inc. (TSXV: RZL) (OTCQB: RZOLF) (FSE: S711) ("RZOLV" or the "Company") is pleased to announce positive preliminary laboratory results from initial scoping tests on selected low-grade copper-gold composite samples using its proprietary RZOLV™ platform. Despite being conducted under unoptimized conditions, the initial tests returned calculated-head sequential recoveries ranging from 82.3% to 94.8% for gold and from 71% to 80% for copper. The program was designed as an early-stage laboratory evaluation and did not include systematic optimization of pre-treatment conditions, leach parameters, reagent regime, residence time, grind size, or other process variables. The Company cautions that these results are preliminary in nature and may not be representative of recoveries achievable under optimized, continuous, or commercial operating conditions. The laboratory program evaluated two selected composite samples representing different copper-gold relationships: one higher-gold, lower-copper composite and one lower-gold, higher-copper composite. The testwork compared direct RZOLV leaching against a sequential configuration of the proprietary RZOLV platform in which copper was first extracted in a pre-treatment step, followed by RZOLV gold leaching of the pre-treated residue. The Company considers the results encouraging because they demonstrate effective gold recovery from copper-bearing material under the specific laboratory conditions tested, while also identifying a potential pathway to manage copper through a separate pre-treatment step and feed-specific flowsheet design. Copper is a relevant factor in many gold systems because it can affect reagent demand and leach conditions and complicate downstream recovery. Key Preliminary Laboratory Results The testwork demonstrated the following results under the conditions tested:

View stock analysis, news, and events for Rzolv Technologies Inc.