understanding graphite quality, supply & demand

Thought it would be a good idea to start a thread dedicated to information on graphite quality and the graphite market for EV batteries.

triggered by this article
https://www.csaglobal.com/wp-content/uploads/2019/07/PaydirtMarch.pdf
"“A graphite mine that
would produce at a 94-96% purity level. It
would have as much medium (plus-80 mesh)
and large flake (plus-50 mesh) as possible.
The lower the percentage of fine flake (minus-80 mesh), the better, since it is the most
abundant material in the market and thus has
the lowest selling price….”"

"It must be borne in mind that in-situ flake
size estimations don’t necessarily translate
directly to flake sizes produced by metallurgical processes such as gravity separation or
froth flotation"

https://www.csaglobal.com/wp-content/uploads/2019/07/PaydirtMarch.pdf
the table on p2 shows pricing as higher for larger flakes.

specialist graphite processor -
https://www.sglcarbon.com/pdf/SGL-Brochure-SIGRACELL-The-Capacity-Boosters-EN.pdf