Graphite shape characteristics
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Graphite shape characteristics
Graphite soft, dark gray; with a greasy feeling, can pollute the paper. Hardness of 1 ~ 2, along the straight direction with the increase of impurities in the hardness can be increased to 5 ~ 3. Proportion of 1.9 to 2.3. The specific surface area of the scale gathered in 1-20m2/g, in the oxygen condition, the melting point of 3000 DEG C, is one of the most high temperature deposits. It can conduct electricity and heat.
In nature, there is no pure graphite, which is usually rich in SiO2, Al2O3, FeO, CaO, P2O5, CuO and other impurities. These impurities are usually present in quartz, pyrite, carbonate and other mineral resources. In addition, there are water, asphalt, CO2, H2, CH4, N2 and other gases some. Therefore, the analysis of graphite, in addition to the determination of fixed carbon content, but also must be together to determine the content of evaporation and ash content.
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