(1) Used for arc steelmaking furnace
Electric furnace steelmaking is a large user of graphite electrode.The output of electric furnace steel in China accounts for about 18% of the output of crude steel, and the graphite electrode used in steelmaking accounts for 70% ~ 80% of the total consumption of graphite electrode.Electric furnace steelmaking is the use of graphite electrode into the furnace current, the use of high temperature heat source generated by the arc between the electrode and the charge to smelting.
(2) For ore thermal electric furnace
-arc furnace is mainly used in the production of industrial yellow phosphorus and silicon, etc., its characteristic is the lower part of the conductive electrode buried in furnace charge, arc formed within the material layer, and use the furnace charge itself from the resistance of the heat energy to heating furnace charge, one of the high current density required -arc furnace need graphite electrode, such as silicon 1 t per production to consumption of graphite electrode is about 100 kg,It takes about 40kg of graphite electrode to produce 1t of yellow phosphorus.
(3) For resistance furnace
Production of graphite products graphitization furnace, melting glass furnace and production of silicon carbide with electric furnace, etc., belong to the resistance furnace, furnace loaded with materials is heating resistance and heating object, usually conductive graphite electrode embedded in the resistance furnace end of the furnace head wall, used for the graphite electrode here is not continuous consumption.
(4) For the preparation of special-shaped graphite products
The blank of graphite electrode is also used for processing into various crucible, mold, boat and heating body and other special-shaped graphite products.For example, in the quartz glass industry, every production of 1T molten tube, graphite electrode billet 10T;For every 1t quartz brick production, 100kg graphite electrode blank is required.