Asante Announces Start of Bibiani Sulphide Plant Operation

Executive Summary

• Asante Gold reports construction and commissioning of the Bibiani sulphide treatment plant are complete; 12 h/day processing began on September 27, 2025 with full 24 h/day operation slated for September 30, 2025.
• The company targets a gold recovery increase from ~60 % to 92 % by late October 2025, which would raise the long‑term production outlook to 450–500 koz Au per year.
• Project cost to date matches budget at US$32 M; plant nameplate capacity is 4 Mt/y with health and safety metrics showing zero lost‑time or recordable incidents YTD.

Key Details

• Health & Safety: Lost Time Incident Frequency Rate = 0.00; Total Recordable Incident Frequency Rate = 0.00 (YTD 2025).
• Capital Expenditure: US$32 M spent to date, exactly on the US$32 M budgeted (pre‑tax).
• Construction Status: All construction and commissioning activities are complete.
• Operational Timeline:
• 12 h/day operation started 27 Sep 2025.
• Transition to 24 h/day operation expected 30 Sep 2025.
• Optimization through October 2025; 92 % gold recovery anticipated by late Oct 2025.
• Recovery Improvement: Expected increase from 60 % to 92 % for the Bibiani Life‑of‑Mine (LOM) average gold recovery.
• Plant Capacity: Designed for 4 million tonnes per year (Mt/y).
• Technical Process Highlights:
• Flotation → regrind to 25 µm → Aachen reactor high‑intensity leach → carbon‑in‑pulp (CIP) for gold recovery.
• Tailings from flotation and sulphide plant routed back to the existing CIL plant for further treatment.
• Supply Chain Partners: Process test work by ALS (Australia); major equipment supplied by Fluor‑Smit (USA), MO Group (Europe), Maelgywn (South Africa). Design by MiningPro – Ghana Ltd.; project management by Jet‑Rom Engineering (Ghana).
• Future Production Outlook: CEO Dave Anthony states the company aims to grow long‑term gold production to 450,000–500,000 oz per year once the plant is fully optimized.
• Earnings Webcast Replay: Quarter‑ended July 31, 2025 earnings call replay now available on Asante’s website.

Notable Quotes

“With construction and commissioning of the Bibiani sulphide treatment plant complete, we are focused on the next phase, which moves the plant into operation, ramp‑up, testing and optimization to achieve 92% recovery and enhance Bibiani’s growth profile.” – Dave Anthony, President & CEO

All forward‑looking statements are subject to risks and uncertainties as detailed in the release.