Mr. David Anthony reports
ASANTE GOLD PROVIDES UPDATE ON BIBIANI SULPHIDE TREATMENT PLANT RAMP-UP
Asante Gold Corp. has provided an update on the ramp-up of the new sulphide treatment plant (STP) at the Bibiani gold mine in Ghana.
Highlights
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Ramp-up: Construction and commissioning are complete. Plant operations began on a 12-hour basis on Sept. 27, 2025, with continuous 24-hour operation established from Sept. 29, 2025.
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Gold recovery: Process optimization progressed through late November, 2025, but without the benefit of the oxygen plant, which was committed for delivery in September, 2025, but not delivered until late November, 2025. This has caused a significant delay to the optimization program.
The oxygen plant came online on Dec. 3, 2025, and the Aachen reactor is now running as designed. Gold recovery at the STP has improved significantly from 60 per cent to now exceeding 90 per cent, with overall gold recovery of 82 per cent. Adjustments to operating parameters, including reagent addition practices, will continue with the objective of achieving 90-plus-per-cent recovery overall, in the near term. The process plant remains on track to reach approximately 92-per-cent gold recovery overall, in line with pilot testwork and current optimization initiatives.
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Capacity: The STP has a nameplate capacity of approximately 4.0 million tonnes per year (Mt/y) or 12,000 tonnes per day, which is in line with plans to increase capacity of the processing plant from 3.2 million tonnes per year.
David Anthony, president and chief executive officer, stated: "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."
Operations update
Since start-up, Asante's team has focused on a controlled ramp-up that prioritizes stable throughput, reagent optimization and regrind to achieve liberation of gold. Near-term priorities include:
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Sustaining 24/seven operations while optimizing flotation kinetics, concentrate regrind and CIP operation;
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Near-term STP objectives include achieving targeted approximately 92-per-cent gold recovery and increasing process plant throughput toward 4.0 M (million) t/y (tonnes per year) design capacity by Q2 2026;
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Higher-grade ore is now being processed from the Main Pit in line with mine sequencing, so that gold production is increasing.
Qualified person
The scientific and technical information in this news release has been reviewed and approved by David (Dave) Anthony, PEng, president and chief executive officer of Asante, who is a qualified person under National Instrument 43-101.
About Asante Gold Corp.
Asante is a gold exploration, development and operating company with a high-quality portfolio of projects and mines in Ghana. Asante is currently operating the Bibiani and Chirano gold mines, and continues with detailed technical studies at its Kubi gold project. All mines and exploration projects are located on the prolific Bibiani and Ashanti gold belts. Asante has an experienced and skilled team of mine finders, builders and operators, with extensive experience in Ghana. The company is listed on the TSX Venture Exchange and the Ghana Stock Exchange. Asante is also exploring its Keyhole, Fahiakoba and Betenase projects for new discoveries, all adjoining or along strike of major gold mines near the centre of Ghana's Golden Triangle.
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