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

Globe and Mail

21-05-2025

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.
As previously announced, the new PyroGenesis designed FSR pilot plant has progressed through several important stages. After successfully proving out the underlying assumptions using lab scale tests, PyroGenesis is now testing the assumptions at pilot plant scale, with the current focus on validating equipment scale-up from lab to pilot plant scale and replicating the lab-scale fumed silica product quality.
PyroGenesis recently announced that (i) an important milestone of producing and collecting powder in the product recovery unit known as the 'baghouse' had been achieved, and (ii) samples had been sent to an independent laboratory to confirm that (a) the powder collected was fumed silica, and (b) what was collected was what was expected, and that any impurities that are observed were not only anticipated but are in a state that was expected and which can be removed.
The announcement today confirms that an independent analysis of the powder reflects that:
(1) the powder collected from the baghouse is in fact fumed silica,
(2) any impurities observed were not only anticipated but are in a state that was expected and which can be removed, and
(3) the amount produced was greater than anticipated and as such bodes well for the ultimate economics of the project.
Figure 1. TEM images of fumed silica nanoparticles, (a) Lab-Scale Silica Polvere collected from inside the Reactor (b1-b2) Pilot-Scale Silica Polvere collected from the Baghouse and (c1) Evonik Commercial Grade Aerosil 90, (c2) Evonik Commercial Grade Aerosil 150, (c3) Evonik Commercial Grade Aerosil 200
In a side-by-side comparison, the PyroGenesis material appears well aligned with the microstructure and complexity of mid to high surface area of commercial grade fumed silica produced by Evonik Corporation, typically in the range of 150 to 200 m²/g.
The balance of the pilot plant program will now be focused on two primary objectives:
a) first, to focus on enhancing product purity by perfecting powder morphology and viscosity, and
b) second, to focus on delivering the production target goal of 50 tonnes per year (TPY).
In parallel, the FSR pilot plant will undergo a series of optimization tests, which aim to:
Improve process control and parameter stability,
Increase silica conversion efficiency and yield, and
Increase product surface areas.
These efforts will provide invaluable information required for scale-up plans and equipment modifications required to make the system commercially viable. Together, the results of the characterization and optimization phases will essentially determine market fit.
'Today's announcement is a welcomed milestone which has increased the probability of success, but we must remember that until we have proven out every step, there is no guarantee that success will be the result,' said P. Peter Pascali, President and CEO of PyroGenesis, 'Having said that we are very pleased with the results of this analysis, as it confirms our theoretical expectations at a key juncture in the overall project.'
Fumed silica is one of the most widely used industrial materials, and can be found in thousands of products we use every day, including personal care, cosmetics, toothpaste, pet litter, powdered food, milkshakes, instant coffee, pharmaceuticals, agriculture (food & feed), adhesives, paints, inks, photocopy toner, sealants, fiber optic cables, thermal insulation, construction materials, and batteries, just to name a few. It is often used in these products as a thickening/anti-caking agent, used to stabilize and improve the texture and consistency of the end-product.
PyroGenesis' involvement in developing fumed silica from quartz is part of its three-vertical solution ecosystem that aligns with economic drivers that are key to global heavy industry. Fumed powders are part of PyroGenesis' Commodity Security and Optimization vertical, where the development of advanced material production techniques, and the use of technology such as plasma to recover viable metals, chemicals, and minerals from industrial waste, helps to maximize raw materials and improve the availability of critical minerals. The Company's other verticals are Energy Transition and Emission Reduction and Waste Remediation.
About PyroGenesis Inc.
PyroGenesis, a high-tech company, is a proud leader in the design, development, manufacture and commercialization of advanced plasma processes and sustainable solutions which reduce greenhouse gases (GHG) and are economically attractive alternatives to conventional 'dirty' processes. PyroGenesis has created proprietary, patented and advanced plasma technologies that are being vetted and adopted by multiple multibillion dollar industry leaders in four massive markets: iron ore pelletization, aluminum, waste management, and additive manufacturing. With a team of experienced engineers, scientists and technicians working out of its Montreal office, and its 3,800 m 2 and 2,940 m 2 manufacturing facilities, PyroGenesis maintains its competitive advantage by remaining at the forefront of technology development and commercialization. The operations are ISO 9001:2015 and AS9100D certified, having been ISO certified since 1997. PyroGenesis' shares are publicly traded on the TSX in Canada (TSX: PYR), the OTCQX in the US (OTCQX: PYRGF), and the Frankfurt Stock Exchange in Germany (FRA: 8PY1).
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