MONTREAL, June 01, 2023 (GLOBE NEWSWIRE) -- PyroGenesis Canada Inc. (http://pyrogenesis.com) (TSX: PYR) (NASDAQ: PYR) (FRA: 8PY), a TSX30® and a Deloitte Canada Clean Technology Fast 50TM high-tech company (the “Company” or “PyroGenesis”) that designs, develops, manufactures and commercializes advanced plasma processes and sustainable solutions which are geared to reduce greenhouse gases (GHG), confirms that, as announced earlier today by HPQ Silicon (“HPQ”), the PUREVAPTM Quartz Reduction Reactor (QRR) designed and built by PyroGenesis achieved successful laboratory validation of quartz to high-purity 3N+ silicon in one step.