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Introduction of carbon in refractories


The thermal expansion coefficient of carbon products is very low, high thermal conductivity, good thermal shock resistance, and high temperature strength. It is not softened for a long time at high temperature. It is not eroded by any acid and alkali, has good salt resistance, and is not wet with metal and slag. It is a high -quality high -temperature resistant material. The disadvantage is that it is easy to oxidize at high temperature and should not be used in the oxidation atmosphere. Carbon quality products are widely used in high -temperature stove lining (bottom of the furnace, the furnace cylinder, the lower part of the furnace body, etc.), and the lining of the melting color metal furnace. Graphite products can be used as a high -pressure kettle in the reaction slot and petrochemical. Silicon carbide and graphite products can also be used to make melting copper -with gold and light alloy.

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