Natural Graphite Powder and Synthetic Graphite Powder

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Graphite is a soft, crystalline form of carbon and can be found naturally in metamorphic rocks like marble, schist and gneiss. It is gray to black in color and has a metallic luster, making it an excellent conductor of heat or electricity.

Typically classified as flake, crystalline and amorphous depending on the source of the mineral, natural graphite has many applications in a variety of industries. It is used in refractories, coatings, adhesives and lubricants, as well as fuel cells, batteries and electric vehicles.

Synthetic Graphite Powder

A manufactured product, synthetic graphite is made by high-temperature treatment of amorphous carbon materials. The primary feedstock for this process is calcined petroleum coke and coal tar pitch.

The morphology of most synthetic graphite products varies from flakey in fine powders to irregular grains and needles in coarser products. The manufacturing process consists of various mixing, molding, and baking operations followed by high-temperature heat treatments.

Autogenous Surface Treatment of Graphite

Mechanical surface treatment of any pulverulent graphitic materials results in an increase in the bulk density, the tamped density and in other important material properties, such as compressibility, absorption capacity for polymeric binder materials or liquids, and for organic solvents and aqueous systems. The treatment according to the invention also enables the graphitic carbon particles to be mechanically rounded off. This reduces the dust formation and abrasion effect, which are typical of other mechanical treatments.