Abstract: A device for rounding a graphite-based material having a work space in which the rounding occurs; an insertion device for introducing the graphite-based material into the work space, a number of rounding tools, situated in the work space and configured for rotational surrounding motion, in the form of blades that are positioned on a disk rotating about a rotational axis and in a rotation direction, preferably having at least one guide apparatus and having one separating device to separate fine material and the finest material, having a product outlet and preferably a covering ring, which is positioned above the rounding tools, wherein the disk bears at least 40, preferably at least 45, and especially preferably at least 55 blades per meter of circumference.

Abstract: A method for producing graphite particles of certain, different fineness classes rounded by impact effect, with the help of several spheroidal separators, which are connected in series, wherein the graphite material to be rounded is pre-comminuted, and from this, a first spheroidal separator then produces graphite material, which is spheroidized by means of folding, of a first fineness class, which is discharged from the method as end product, and simultaneously separates graphite material, which can predominantly not be processed to graphite material of this first fineness class because it is too comminuted, wherein the separated graphite material, which is too comminuted, is fed to a second spheroidal separator, which, from this, can produce graphite material, which is spheroidized by means of folding, of a second, finer fineness class, which is likewise discharged from the method as end product.