Process for More Efficient Spheroidisation of High-Quality Graphite Particles

A total device for producing spheroidized graphite, comprising a classifier mill and several spheronizers arranged behind one another and interacting with one another, wherein the device or spheronizer for rounding a graphite material by collision force, including a processing chamber, a feeder device for introducing graphite material into the processing chamber,

• and a number of rounding tools, which—preferably—are arranged on the outer circumference of a rotor, preferably in the form of a disk, rotating about a rotation axis and in a rotation direction, which is situated in the processing chamber, wherein the rounding tools are configured in such a way that they can act on graphite particles during operation so that the latter become rounded by folding,
• and a separation device to separate fine material and superfine material,
• as well as a product outlet,
• wherein
• the processing chamber is equipped with a coolant feeder device by which the free cooling medium can be introduced into the processing chamber, wherein the device preferably also includes a regulator for the process space temperature.

A process for producing spheroidized graphite, having the following steps:

• filling the processing chamber of a spheronizer, wherein the device or spheronizer for rounding a graphite material by collision force, includes a processing chamber, a feeder device for introducing graphite material into the processing chamber,
• and a number of rounding tools, rotating about a rotation axis and in a rotation direction, which is situated in the processing chamber, wherein the rounding tools are configured in such a way that they can act on graphite particles during operation so that the latter become rounded by folding,
• and a separation device to separate fine material and superfine material,
• as well as a product outlet,
• wherein
• the processing chamber is equipped with a coolant feeder device by which the free cooling medium can be introduced into the processing chamber, wherein the device preferably also includes a regulator for the process space temperature, with one batch made up of preferably pre-ground graphite,
• introduction of rotational energy into the processing chamber of the spheronizer,
• tempering the processing chamber by introducing a free coolant into the processing chamber, preferably at a processing temperature between 40° C. and 120° C., ideally at a processing temperature between 40° C. und 100° C.

A process for producing rounded graphite particles of certain varying classes of fineness through collision force,

• with the help of several spheronizers situated in succession, wherein the spheronizer includes a processing chamber, a feeder device for introducing graphite material into the processing chamber,
• and a number of rounding tools, which—preferably—are arranged on the outer circumference of a rotor, preferably in the form of a disk, rotating about a rotation axis and in a rotation direction, which is situated in the processing chamber, wherein the rounding tools are configured in such a way that they can act on graphite particles during operation so that the latter become rounded by folding,
• and a separation device to separate fine material and superfine material,
• as well as a product outlet,
• wherein
• the processing chamber is equipped with a coolant feeder device by which the free cooling medium can be introduced into the processing chamber, wherein the device preferably also includes a regulator for the process space temperature, wherein the graphite material to be rounded is pre-reduced and then from it an initial spheronizer, by folding, produces spheroidized graphite material of a first fineness class which is expelled as an end product upon conclusion of the process,
• and simultaneously graphite material is expelled, which for the most part cannot be processed into graphite material of this first fineness class, because it has been excessively reduced,
• wherein the expelled, excessively reduced graphite material is subjected to a second spheronizer, which by folding can produce therefrom spheroidized graphite material of a second, finer fineness class, which likewise is expelled as an end product upon conclusion of the process.