Electric arc steelmaking furnaces use electricity as the main energy source. Electric energy is discharged through graphite electrodes and furnace materials to generate high temperatures of up to 2000-6000 ℃, melting scrap steel raw materials through arc radiation, temperature convection, and heat conduction. During most of the time when the furnace charge is melted, the high-temperature heat source is surrounded by the furnace charge, and the heat loss caused by high-temperature exhaust gas is relatively small, so the thermal efficiency is higher than other steelmaking equipment such as converters. In addition, electric heating is easy to precisely control the furnace temperature and can be operated under any conditions such as oxidizing or reducing atmosphere, atmospheric pressure or vacuum according to process requirements.
　　The steelmaking process is short, the equipment is simple, the operation is convenient, it is relatively easy to control pollution, the construction investment is low, the footprint is small, and it does not need to rely on a complex ironmaking system like converter steelmaking. Electric arc furnace steelmaking has strong adaptability to furnace materials. It mainly uses scrap steel as the main raw material, but can also use solid and liquid iron containing raw materials such as molten iron (blast furnace or iron smelting furnace molten iron), sponge iron (DRI) or hot pressing block (HBI), pig iron block, etc. Due to the controllable atmosphere inside the electric arc furnace steelmaking furnace, the operation of adjusting or replacing slag is relatively easy, and complex process operations such as melting, decarbonization, dephosphorization, degassing, inclusions removal, temperature control, and composition adjustment (alloying) can be completed in the same operating system. Electric arc furnace steelmaking can produce intermittently and flexibly switch production varieties within a certain range. In addition, modern electric arc furnaces can also use a large amount of auxiliary energy, such as injecting heavy (light) oil, coal powder, natural gas, etc. Therefore, the electric arc furnace steelmaking process has strong adaptability, flexible operation, and wide application. Electric arc furnaces can not only smelt steel with low phosphorus, sulfur, and oxygen content, but also alloy various elements (including easily oxidizable elements such as lead, boron, vanadium, titanium, and rare earths) to produce various types of steel and alloy steels, such as ball bearing steel, stainless acid resistant steel, tool steel, electrical steel, heat-resistant steel, magnetic materials, and special alloys. Alright, the above is the introduction of relevant information about electric arc furnaces. For more details, please follow the official website: http://www.ayynd.com/
　　 Keywords:    Electric arc furnace    DC ore blast furnace    DC arc furnace