Graphite is a black to gray-black mineral with low hardness (Mohs hardness of 2), which is produced all over the world. Crystal graphite is in the shape of hexagonal plates and flakes, and the aggregate is scaly. Because of its lubricity and conductivity, High temperature resistance, chemical inertness and low thermal expansion and other special properties are widely used in refractory products. Its main types are: refractory bricks and high melting point plastics; crucible brakes, nozzles, etc.; continuous casting powder for brick making; casting cores and Mold coating; protective slag (for steelmaking).
Flake graphite is widely used in refractory materials in the metallurgical industry, pencil leads in the light industry, electrodes in battery technology, and lubrication and sealing materials in the chemical industry. As a functional filler of coatings, it is mainly used for anti-corrosion coatings, fire-resistant coatings and conductive coatings.
When natural flake graphite is used as a fireproof filler, expanded graphite powder is a kind of graphite intercalation compound obtained by chemical or electrochemical treatment with natural graphite flakes as raw materials. Expanded graphite expands rapidly in volume (up to 350 times) when heated, suffocates the flame, and forms an expansion together, which reaches the function of isolating the flame, prolonging or intermittent flame extension, and is non-combustible, flexible, and the carbonized layer has good strength. .
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| Graphite Flakes; Expandable Graphite; Earthy Graphite Powder |
| High temperature resistance, Electrical and thermal conductivity, Lubricity, Chemical stability, Anti-erosion ability, Plasticity, Thermal shock resistance etc. |
| battery additives, lubricant, thermal fillers, casting, insulation materials, sealed and fireproof materials, Anti-corrosion, coatings, textile etc. |
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