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The three major breakthroughs in special metallurgy in the 20th century are vacuum metallurgy, plasma metallurgy and electroslag metallurgy.
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Ladle refining furnace (Ladle refining furnace) refers to equipment that has both the heating and refining functions of a steelmaking furnace. It is an important metallurgical equipment used for refining molten steel melted in primary furnaces (electric arc furnace, open hearth, converter), and can adjust the temperature of molten steel, process buffering, and meet continuous casting and continuous rolling requirements.
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In the modern steel production process, the main functions of secondary refining are: (1) Undertake part of the original refining function of the primary furnace, complete part of the steelmaking reaction under the best thermodynamic and kinetic conditions, and improve the production capacity of the
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Dephosphorization of molten steelAt present, the single-use converter process can reach a phosphorus content of 40-100 ppm, which depends on the silicon and phosphorus content in the molten iron. According to the amount of slag to determine the silicon content of molten iron, P2O5 must be formed dur
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Secondary refining refers to the refining outside the traditional steelmaking furnace (such as open hearth, refined furnace, electric furnace). The main tasks of refining are deoxidation, desulfurization, dephosphorization, decarburization, removal of inclusions, alloying and fine-tuning of composit
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