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Graphite is one of the highest boiling point substances in nature melting, melting at 3 850 ± 50 ℃, boiling point is 4 500 ℃, and the boiling point of silicate minerals are 2 750 ℃ (quartz boiling point) or less, well above the boiling point of graphite impurities contained in the boiling point of the silicate. This feature is the basis of high-temperature purified graphite reason perish. The graphite powder directly into a graphite crucible and heated in inert gas and freon protective gas purification furnace to 2 300-3 000 ℃, a period of time, impurities in the graphite will overflow to achieve graphite purification. High-temperature method commonly used by flotation or more chemically purified 99% of the carbon-carbon…
Graphite specially processed later, you can create a variety of special materials for the relevant industrial sectors. With the development of modern science and technology and industry applications of graphite is constantly expanding, and has become an important raw material in the high-tech field of new composite materials, has an important role in the national economy. Here are some common graphite deep processing products: (1) High-purity graphite: widely used in nuclear reactor shielding and reflective materials, solid fuel, rocket nozzles, aerospace equipment parts, advanced refractory and paint, pencil of light industry, electrical industry, carbon brush, electrode in battery industry, fertilizer industry catalyst. (2) Graphite milk: milk into a graphite tube, forging graphite milk, milk graphite drawing, saving energy and reducing…
