Electric arc furnace is a kind of electric furnace that uses electric arc to produce high temperature to smelt metal or ore. because the arc energy generated by gas discharge is quite concentrated, and the temperature in the arc area is more than 3000 degrees. Therefore, using electric arc furnace to smelt metal is much more flexible than steel-making furnace, which can remove sulfur, phosphorus and other magazines well, and the furnace temperature is particularly easy to control.

The electric arc furnace covers a small area and is suitable for the melting of alloy steel. According to its different arc forms, the common electric arc furnace can be divided into three-phase electric arc furnace, consumable electric arc furnace, single-phase electric arc furnace and so on.

The furnace body of electric arc furnace is mainly composed of furnace cover, furnace door, tapping trough and furnace body. The furnace bottom and furnace wall are built with some alkaline refractory materials and acidic materials.

Electric arc steelmaking furnace is divided into ordinary power electric arc furnace, high power electric arc furnace and ultra-high power electric arc furnace according to the transformer capacity per ton of furnace capacity.

Electric arc furnace steelmaking is to input electric energy into the electric arc steelmaking furnace through graphite electrode, and make steelmaking with the electric arc between the electrode end and the charge as the heat source. The electric arc furnace takes electric energy as the heat source and can adjust the atmosphere in the furnace, which is very beneficial to smelting steel grades containing more easily oxidized elements. Shortly after the invention of electric arc furnace steelmaking, it was used to smelt alloy steel and developed greatly.

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