In order to enrich graphite as a concentrate, the crude ore is wet extracted and subjected to flotation. This process separates the graphite from other minerals by wet mechanical means to achieve a carbon content up to 98 percent. After this graphite has been dewatered, dried and sieved as well as separated into different fractions, the refined raw material is ground to various grain sizes – with some of the graphites going down to sizes of less than 2 micrometres. Various grinding processes also influence the particle morphology, optimise the particle size and give the graphite its desired shape.
