Independent Analysis Confirms HPQ's Pilot-Scale Fumed Silica Production

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HPQ Silicon Inc.
HPQ Silicon Inc.

Baghouse-collected fumed silica yield is outperforming initial projections at this pilot stage

MONTREAL, May 21, 2025 (GLOBE NEWSWIRE) -- HPQ Silicon Inc. (“HPQ” or the “Company”) (TSX-V: HPQ, OTCQB: HPQFF, FRA: O08), a technology company developing next-generation processes for advanced material manufacturing, is pleased to inform shareholders that it has received an independent analysis confirming fumed silica production. The analysis confirms Fumed Silica was produced by HPQ Silica Polvere Inc. [1] (“HSPI”)’s proprietary Fumed Silica Reactor (FSR) Pilot Plant during its four-batch Phase One test.

Further to the Company’s May 15, 2025, release, HSPI’s technology supplier, PyroGenesis Inc. (TSX: PYR, OTCQX: PYRGF, FRA: 8PY1) (“PyroGenesis”), has informed HPQ that the independent analysis of the material produced and collected in the baghouse supports the following conclusions:

 

a)

The white powder material recovered is, in fact, Fumed Silica,

 

b)

The impurities observed in the recovered material were consistent with expectations and are present in a form that makes them readily removable.

 

c)

The production yield was greater than anticipated at this stage, and this bodes well for the ultimate economics of the project.

 

d)

A side-by-side comparison of Transmission Electron Microscopy (TEM) images shows a high degree of similarity between the microstructures and morphological complexity of HSPI’s material produced at lab scale, pilot scale, and that of commercial mid- to high-surface-area fumed silica grades.

Picture FS_1
Picture FS_1


Figure 1. TEM images of Fumed Silica nanoparticles, (a) HSPI Lab-scale Sample of material collected inside the reactor, (b1 – b2) HSPI Pilot scale Samples collected from the Baghouse and (C1) Evonik commercial grades A90, (c2) Evonik commercial grade A150, and (c3) Evonik commercial grade A200 [2].

“These results significantly strengthen the commercial outlook for our Fumed Silica Reactor (FSR) technology,” said Bernard Tourillon, President & CEO of HPQ Silicon and HPQ Silica. “We’ve confirmed the successful recovery of fumed silica from the baghouse section of our pilot plant and also validated our proprietary FSR process reliably—even with a twentyfold increase in scale. Achieving this level of consistency and material quality so early in the pilot phase demonstrates the strength of our approach to de-risking commercialization. With these technical milestones achieved, we’re now ready to advance to the next stage—distributing samples to qualified third parties under NDA and LOI for independent evaluation and qualification.”