Graphite electrode application
(1) electric arc furnace
Electric steelmaking is the main use of graphite electrode. The output of electric furnace steel in China accounts for about 18% of crude steel, and graphite electrode for steelmaking accounts for 70% ~ 80% of the total consumption of graphite electrode. In the steelmaking, the graphite electrode is used to introduce current into the furnace, and the high temperature heat source generated by arcing between the electrode and charge is used for smelting.
(2) used in mine 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 with graphite electrode, such as silicon 1 t per production to consumption of graphite electrode is about 100 kg, per 1 t yellow phosphorus production to consumption of graphite electrode, about 40 kg.
(3) for resistance furnace
The graphitization furnace for producing graphite products, the melting furnace for melting glass and the electric furnace for producing silicon carbide all belong to the resistance furnace. The materials in the furnace are both the heating resistance and the object to be heated. Generally, the graphite electrode used for conducting electricity is embedded in the furnace head wall at the end of the resistance furnace.
(4) used for preparing heteromorphic graphite products
The blank of graphite electrode is also used to process various crucible, mould, vessel and heating element. For example, in the quartz glass industry, 10t of graphite electrode blank is required for every 1t of electric melting tube. For every 1t of quartz brick, 100kg of graphite electrode blank is required.