PyroGenesis Improves Fumed Silica Quality, Purity, and Consistency Across Multiple Production Cycles

MONTREAL, July 08, 2025 (GLOBE NEWSWIRE) -- PyroGenesis Inc. (“PyroGenesis”) (http://pyrogenesis.com) (TSX: PYR) (OTCQX: PYRGF) (FRA: 8PY1), a high-tech company that designs, develops, manufactures and commercializes all-electric plasma processes and sustainable solutions to support heavy industry in their energy transition, emission reduction, commodity security, and waste remediation efforts, announces today that further to its news release dated June 12, 2025, and further to a recent press release from PyroGenesis’ client HPQ Silicon Inc. (“HPQ”), the latest upgrades to the fumed silica reactor (“FSR”) project have resulted in increased material quality, purity, and improved product consistency across multiple production cycles. These results were verified by a leading global fumed silica manufacturer, who had previously requested, tested, and verified first stage material samples produced in the FSR pilot plant under the terms of a letter of intent. PyroGenesis has been engaged to develop and build the FSR pilot plant for HPQ Polvere Inc. (“Polvere”), a subsidiary of HPQ. PyroGenesis has: (i) a 50% interest in Polvere, and (ii) an exclusive arrangement to be the sole supplier of equipment relating to any commercialization of this new process.

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