Asante Gold's Bibiani plant now running non-stop

Executive Summary

• Asante Gold Corp. provided a significant operational update on the ramp-up of its new Sulphide Treatment Plant (STP) at the Bibiani gold mine in Ghana, confirming that construction and commissioning are complete and continuous 24-hour operations have been established.
• Despite delays in the delivery of the oxygen plant (which arrived in late November 2025 instead of September), the plant is now online, leading to a substantial improvement in gold recovery rates from 60% to over 90% at the STP, with overall mine recovery at 82%.
• The company remains on track to achieve its target of approximately 92% overall gold recovery and increase processing plant throughput to the nameplate capacity of 4.0 million tonnes per year by Q2 2026.

Key Details

• Ramp-up Status: Construction and commissioning of the STP are complete. Plant operations began on a 12-hour basis on September 27, 2025, with continuous 24-hour operation established on September 29, 2025.
• Oxygen Plant Delay: The oxygen plant was committed for delivery in September 2025 but was delayed until late November 2025, causing a significant delay to the optimization program. The oxygen plant officially came online on December 3, 2025.
• Gold Recovery Metrics:
  • STP gold recovery has improved significantly from 60% to exceeding 90%.
  • Overall gold recovery is currently at 82%.
  • The Aachen reactor is now running as designed.
  • The target is to achieve 90%+ recovery in the near term and approximately 92% overall, in line with pilot testwork.
• Capacity and Throughput:
  • The STP has a nameplate capacity of approximately 4.0 million tonnes per year (Mt/y) or 12,000 tonnes per day.
  • This represents an increase from the previous processing plant capacity of 3.2 million tonnes per year.
  • The objective is to increase process plant throughput toward the 4.0 Mt/y design capacity by Q2 2026.
• Operational Priorities:
  • Sustaining 24/7 operations.
  • Optimizing flotation kinetics, concentrate regrind, and CIP (Carbon In Leach) operation.
  • Processing higher-grade ore from the Main Pit in line with mine sequencing to increase gold production.
• Management Commentary: CEO David Anthony stated that the STP is now running continuously and that moving toward the 92% recovery target and 4 million tonnes per year throughput is expected to bring "meaningful improvements in gold production and unit costs at Bibiani."

Notable Quotes

• "The sulphide treatment plant is now running continuously and optimization is well under way. This is a pivotal step in Bibiani's growth profile. As gold recovery moves toward our approximately 92-per-cent target and throughput rises to four million tonnes per year, we expect meaningful improvements in gold production and unit costs at Bibiani." — David Anthony, President and CEO