Thermal purification of natural mineral carbons.

摘要

A method for modifying the properties of naturally occurring carbon materials, which comprises the steps of: introducing a charge of carbonaceous primer material into a fluidizing zone; passing a fluidizing medium through said carbonaceous primer material within the fluidizing zone at a velocity sufficient to fluidize substantially uniformly said carbonaceous primer material; heating said carbonaceous primer material while in such fluidized state to at least approximately 2500 DEG C; introducing within the fluidizing zone a carbon material to be thermally treated; maintaining said material within such fluidizing zone for an average residence time sufficient to increase resiliency of the treatment material at least approximately 100%, while simultaneously maintaining such fluidizing and heating conditions; and withdrawing and cooling said material.