Method for Increasing the Yield of Rounded Graphite Particles

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 and characterized in that the quotient of the net volume of the separator chamber and the envelope volume of the separator wheel lies between 4.2 and 6.5.

A device of several spheroidal separators 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.