10 Cent Party, page-2718

Its got CPS on it, so it must have some legs, but limited to the (advanced) glass market essentially. The likes of peers like (VRX - Silica) all waiting for dance partners.

The Ivigtut tailings will need some some work, not because it doesn't have valuable "by-products", but literally got too many - and you can't simply ship for feedstock without some form of separation and beneficiation as you will probably get a lot more creating marketable concentrates or other valuable commodities.

The value in the Quartz will be subject to which smelter it is heading to as stock feed. With relative 2.5 tonne of Quartz for every 1 ton of silica metal (recipe including woodchip etc) about 4N. so 99.99% at a minimum. Wastage comes out as slag, which you can sell as construction/road material.
So this get more power intensive with increasing N-configuration.

The furnace isn't exactly easily configurable so you can't go get to say 5N,6N lol 7N. (without a monstrous plant size).
You can set up a furnace to 4N, but spend more than 12 months configuring it; and need to be in a renewable or cheap energy source.
The Chinese for instance run power stations as loss leaders, adjacent to the smelters.
Europeans rely on geothermal as an example of renewables. This is probably an example of where solar/wind, don't cut the mustard.

There is quite a market itself for IP and licensing for furnace/plasma technology
https://www.pyrogenesis.com/presentations/
https://www.globenewswire.com/news-release/2021/08/05/2275933/0/en/PyroGenesis-Confirms-Successful-Production-of-Nano-Silicon-Material.html
https://www.pyrogenesis.com/wp-content/uploads/2021/06/2021-07-06-PyroGenesis-Announces-4.6-MM-Increase-in-Funding-to-Transform-Quartz-into-Fumed-Silica-Signs-4MM-Contract-with-HPQ-Polvere.pdf