Material Produced in the Reactor and Collected in Product Recovery Unit.
MONTREAL, Canada — HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ) (OTCQB: HPQFF) (FRA: 8PY1), a technology company developing next-generation processes for advanced material manufacturing, would like to inform shareholders that HPQ Silica Polvere Inc. (“HSPI”) [1] proprietary Fumed Silica Reactor (FSR) Pilot Plant has reached a Significant Milestone during its 4th Phase-one batch test.
HSPI’s technology supplier, PyroGenesis Inc. (TSX: PYR, OTCQX: PYRGF, FRA: 8PY1) (“PyroGenesis”), has confirmed that the Pilot Plant is advancing in validating the scale-up of its equipment from lab-scale to pilot-scale.
As part of this validation and following continuous process improvements after each of the first 3 Phase-one batch tests, the Pilot Plant achieved a key objective: the production and collection of substantial quantities of white powder material—potentially fumed silica—in the dedicated product recovery unit, commonly known as the “baghouse.”
Image 1) Sample of material produced during the test
In its May 13th, 2025, press release, PyroGenesis emphasized the importance of this development:
“…producing and then collecting fumed silica from the product recovery unit, known as the ‘baghouse,’ confirms most of the underlying assumptions that the process can make, as expected, fumed silica at commercial scale. This is what makes this milestone probably one of the most, if not the most, important milestones in the entire process. Having overcome all the challenges to get to this point, then the remaining balance of challenges should be very manageable.”
This achievement is another step in validating the potential of HSPI’s proprietary process to produce commercial-scale fumed silica, effectively positioning the Company’s next phase of development and eventual commercialization.
NEXT STEP: TESTING THE MATERIAL
Having visually observed that the material collected in the baghouse looks like fumed silica, the powder material collected is in the process of being tested to confirm a) if it is fumed silica or an intermediary material, and b) if it contains any impurities.
“Saying we’re excited by the results would be an understatement. Achieving these outcomes so early in the testing phase significantly boosts our confidence in our ability to replicate this milestone and consistently produce commercial-quality material,” said Bernard Tourillon, President & CEO of HPQ Silicon and HPQ Silica. “Once we receive confirmation and are satisfied with the material’s quality, we will be ready to distribute samples to third parties.”
REFERENCE SOURCES
[1] A wholly owned subsidiary of HPQ Silicon Inc. when technology supplier PyroGenesis announced its intention to exercise its option to acquire a 50% stake in HSPI in May 2024.
HPQ Silicon is a Quebec-based TSX Venture Exchange Tier 1 Industrial Issuer. With the support of world-class technology partners PyroGenesis Canada and NOVACIUM SAS, the company is developing new green processes crucial to make the critical materials needed to reach net zero emissions.
