Mixing and kneading of raw materials for graphite production

Kneading: Stir and mix quantitatively various carbonaceous particles and powders with a quantitative binder at a certain temperature, and the process of kneading into a plastic paste is called kneading.

Kneading process: dry mixing (20-35 min) wet mixing (40-55 min)

The role of kneading:

- During dry mixing, the various raw materials are mixed uniformly, and at the same time, solid carbon materials of different particle sizes are uniformly mixed and filled to improve the density of the mixture;

- After adding coal tar pitch, the dry material and asphalt are mixed evenly, and the liquid asphalt is evenly coated and infiltrated on the surface of the particles to form a layer of asphalt bonding layer, which bonds all materials together to form a homogeneous plastic paste. Conducive to molding;

- Part of the coal pitch penetrates into the internal voids of the carbonaceous material, further improving the density and cohesiveness of the paste.