Views:0 Author:Site Editor Publish Time: 2021-07-05 Origin:Site
Electric energy discharges and arcs through the graphite electrode and the charge to produce a high temperature of 2000 to 6000 or more, using arc radiation, temperature convection and Heat conduction melts the scrap raw material. Most of the time when the charge is melted, the high-temperature heat source is surrounded by the charge, and the heat loss caused by the high-temperature exhaust gas is relatively small, so the thermal efficiency is higher than that of the converter, etc. Steelmaking equipment. In addition, electric heating can control the furnace temperature well, and the heating process can be carried out under any conditions such as oxidizing atmosphere or reducing atmosphere, normal pressure or vacuum according to the requirements of the process. Row. The 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 area is small, and there is no need to rely on complex ironmaking such as converter steelmaking system. very good.
It uses scrap steel as the main raw material, but it can also use solid and liquid iron-containing raw materials, such as molten iron (blast furnace or ironmaking furnace), sponge iron (DRI), hot briquetting block (HBI), pig iron block, etc. Since the atmosphere in the electric arc furnace steelmaking furnace is controllable, the slag adjustment or replacement operation is easy, and the melting, decarburization, dephosphorization, degassing, removal of inclusions, temperature control and composition adjustment (alloying) are complex. Miscellaneous process operations can be completed in the same operating system.
And the production varieties can be flexibly changed within a certain range. On the other hand, modern electric arc furnaces can also In order to utilize a large amount of auxiliary energy, such as injecting an appropriate amount of heavy (light) oil, pulverized coal, natural gas, etc. Therefore, the process electric arc furnace steelmaking is not only adaptable, flexible in operation, but also applicable It is also very extensive. The electric arc furnace can not only smelt high-quality steel with low phosphorus, low sulfur, and low oxygen content, but also alloy with various elements (including lead, boron, vanadium, titanium, rare earth and other easily oxidizable elements). Production of various steels and alloy steels, such as stainless acid-resistant steel, bearing steel, electrical steel, tool steel, heat-resistant steel, magnetic materials and special alloys. volume upcontent copyshare.