Design of graphite purification device based on DBD plasma technology

In view of the problems existing in the current plasma technology in the graphite purification process, this experiment adopts the dielectric barrier discharge plasma technology to carry out redox purification of graphite, and realizes the plasma oxidation of graphite molecules and the decomposition of interlayer domains under the condition of micro-streamer discharge, so as to achieve the purification of graphite. In this paper, a purification device that is easy to manufacture and operate is designed using the oxidative and reducible properties of graphite, and a new graphite purification method is also proposed, which can continuously process a large number of graphite materials. Therefore, the problems existing in the high temperature method are solved, such as complex equipment, long production cycle, high cost, and unfavorable industrial production. The whole process proposed in this paper does not produce waste liquid, and has the advantages of low cost, safety and environmental protection. The experimental results show that the graphite purification process proposed in this paper can purify the graphite with a carbon content of 79.4% to a carbon content of more than 99%.