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An electric arc furnace is an electric furnace that smelts ores and metals using the high temperature generated by an electrode arc.
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Electric arc furnace is an electric furnace that uses the high temperature produced by electrode arc to melt ores and metals. The energy is very concentrated when the gas discharge forms the arc, and the temperature of the arc area is above 3000 ℃. For metal smelting, the electric arc furnace is more flexible than other steelmaking furnaces, which can effectively remove sulfur, phosphorus and other impurities. The furnace temperature is easy to control, and the equipment occupies a small area, which is suitable for smelting high-quality alloy steel.
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Ultra-high-power electric arc furnaces mainly use arcs to heat and melt scrap steel.
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How to reduce the consumption of three circumference electrodes in smelting is not only the technology of carbon manufacturers, but also the important work of smelting manufacturers to cooperate in the use and optimize the operation of electric furnaces.
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At present, the domestic electric furnace equipment accounts for 85% of the domestic electric furnace capacity, and the imported electric furnace accounts for 15%. Although domestic manufacturers have certain strength in single equipment, and electric furnace equipment below 100 tons has basically been localized, Chinese scientific and technological workers have also been committed to developing complete sets of electric furnace equipment with independent intellectual property rights.
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Electric arc furnace melting uses the heat generated by the electric arc between graphite electrode and iron (molten iron) to melt iron and overheat molten iron. In the process of electric arc furnace smelting, when the iron is melted, the smelting operation of further increasing the temperature and adjusting the chemical composition is carried out under the condition that the molten iron is covered by the slag.
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The oxidation period of ordinary power electric arc furnace steelmaking usually refers to the process stage from the dissolution of the charge, sampling and analysis to the completion of the oxidation slag. Some think it started from blowing oxygen or adding ore to decarbonize.
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The operation of adding raw materials such as molten iron or scrap steel to the electric furnace is the first step of the electric furnace steelmaking operation. The operation of adjusting the slag composition, alkalinity, viscosity and reaction ability in the production of steel and iron.
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