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What are the advantages of EAF steelmaking?
Updated: 2022-04-28 Attention:
Electric energy is the main energy of electric arc furnace steelmaking. The electric energy is discharged and arced with the charge through the graphite electrode, resulting in a high temperature of more than 2000 ~ 6000. The scrap raw materials are melted by arc radiation, temperature convection and heat conduction. Most of the time when the charge melts, the high-temperature heat source is surrounded by the charge, and the heat loss caused by high-temperature waste gas is relatively small, so the thermal efficiency is higher than that of converter and other steelmaking equipment. In addition, electric heating can well control the furnace temperature, and the heating process can be carried out under any conditions such as oxidation atmosphere or reduction atmosphere, atmospheric pressure or vacuum according to the requirements of the process.
Electric arc furnace steelmaking equipment is simple, the operation process time is short and convenient, the pollution is particularly easy to control, the construction investment is small, the floor area is small, and there is no need to rely on complex ironmaking systems such as converter steelmaking. Very good.
It can also be used as raw materials of blast furnace (such as HBI) and molten iron, but it can also be used as raw materials of electric arc furnace (such as molten iron and pig iron), and it can also be used as raw materials of electric arc furnace (such as HBI).
Because the atmosphere in the EAF steelmaking furnace is controllable and the slag adjustment or replacement operation is easy, the complex process operations such as melting, decarburization, dephosphorization, degassing, removal of inclusions, temperature control and composition adjustment (alloying) can be completed in the same operating system. EAF steelmaking can be produced intermittently, and the production varieties can be changed flexibly within a certain range. On the other hand, modern electric arc furnace can also use a large amount of auxiliary energy, such as injecting an appropriate amount of heavy (light) oil, pulverized coal, natural gas and so on. Therefore, EAF steelmaking process not only has strong adaptability and flexible operation, but also is widely used.
Electric arc furnace can not only smelt high-quality steel with low phosphorus, low sulfur and low oxygen content, but also produce all kinds of steel and alloy steel by alloying with various elements (including easily oxidized elements such as lead, boron, vanadium, titanium and rare earth), such as stainless and acid resistant steel, bearing steel, electrical steel, tool steel, heat-resistant steel, magnetic materials and special alloys.
Well, the above is about the advantages of EAF steelmaking. For more information about EAF steelmaking, please pay attention to the official website: http://www.apple21.cn/
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