PyroGenesis Confirms Production of Fumed Silica at Pilot Scale Following Independent Analysis

MONTREAL, May 21, 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 further to its news release dated May 15, 2025, and today’s press release from the Company’s client HPQ Silicon Inc. (“HPQ”), independent analysis of material produced during the latest phase of system testing of the Fumed Silica Reactor (the “FSR”) is in fact fumed silica. PyroGenesis is engaged to develop the Fumed Silica Reactor by HPQ Silica Polvere Inc. (“Polvere”), a subsidiary of HPQ.

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