The metallurgical industry refers to the industrial sector that mines, selects, sinters metal ores, smelts them, and processes them into metal materials. Divided into: (1) ferrous metallurgy industry, that is, the industrial sector that produces iron, chromium, manganese and their alloys, which mainly provides raw materials for modern industry, transportation, capital construction and military equipment; (2) non-ferrous metallurgical industry, that is, production Non-ferrous metal refining industry sectors, such as copper smelting industry, aluminum industry, lead and zinc industry, nickel and cobalt industry, tin smelting industry, precious metal industry, rare metal industry and other departments.
Graphite electrodes widely used in the smelting steel industry are mainly made of petroleum coke and needle coke as raw materials and coal tar pitch as a binder. In the electric arc furnace, the conductor that releases electric energy in the form of arc to heat and melt the charge can be divided into ordinary power, high power and power according to its quality index.
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