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In industry, graphite electrodes and graphite anode plates require three kinds of equipment or materials.Their use is directly related to the safety and efficiency of industrial production.If the material is oxidized and corroded, the normal operation of industrial production will not be realized, and the safety risk index will be greatly improved.
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When the graphite electrode works normally, its temperature can reach 1400℃.Under high temperature, graphite electrode lining under high temperature oxidation aging, such as high temperature flame barbecue, lining insulation brick, insulation cotton, etc., material embrittling, insulation effect decreased, graphite electrode safety index decreased.Thus, a batch of graphite electrode linings will be replaced for 3-5 years, which will lead to material waste and shorten the normal working time of the graphite electrode.Graphite anode plate is oxidized and corroded faster at high temperature.Graphite anode plate high temperature oxidation refers to the high temperature gas environment, graphite anode plate and steam, carbon dioxide, sulfur dioxide and other oxygen-containing substances reaction, the formation of graphite anode oxide.Graphite anode plate oxide and graphite anode plate can not be separated into a whole.High temperature corrosion is a common problem in petrochemical, energy, electric power, metallurgy, aerospace and other fields.The corrosion and oxidation of graphite anode plate at high temperature will lead to the reduction of embrittlement layer, hardness, strength and toughness of graphite anode plate, which is prone to explosion and other major safety accidents.High temperature graphite includes graphite electrode, graphite mold and graphite crucible.
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The graphite in these three materials is prone to oxidative combustion reaction at high temperature, resulting in the increase of the porosity and porous structure of rubber-carbon layer on the surface of the material, affecting its service life.Taking traditional ladle baking as an example, the decarburized porous layer with diameter more than 15mm was produced on the general surface of carbon (graphite) refractory after baking, and the decarburized layer corroded rapidly after steel extraction.Graphite is a relatively valuable material.Corrosion and oxidation can lead to increased production costs and waste of energy materials.The harm of high temperature oxidation of graphite anode plate and its safety significance and energy saving benefit were summarized.It is very important to effectively prevent high temperature oxidation rate, improve energy saving and utilization rate of materials and reduce high temperature safety accident rate of industrial materials.
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Main Product:
graphite electrode,
graphite power ,
carbon electrode,
graphite scrap,
graphitized petroleum coke,
calcined petroleum coke
