Flint dust
Flint dust is a dust used to get 
Silicon Cell.
Recipe
Crafting Table - Techreborn:flint Dust
Industrial Centrifuge - Techreborn:peridot Dust
Usage
Flint dust could be further processed in 
Industrial Electrolyzer
Industrial Electrolyzer - Techreborn:silicon Cell
Besides that, Flint dust could be split into small piles using Crafting Table
Crafting Table - Techreborn:small Pile Of Flint Dust