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Functions of secondary refining

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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2021 04-02
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Refining to remove oxides

Refining to remove oxidesAt the end of the secondary refining, in order to obtain high purity molten steel, so-called "bubble floating purification" is required. Here, "bubble floating and purification" means the boiling of molten steel caused by small bubbles near the bottom of the ladle top slag r

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2021 03-29
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Denaturation of secondary refining inclusions

Denaturation of secondary refining inclusionsThe inclusions are denatured by adding calcium-containing materials, such as CaSi. CaSi can be blown into the furnace with a spray gun, or added to the furnace in the form of a core wire. The denaturation of inclusions can be studied with the CaO-Al2O3-Ca

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2021 03-26
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Types of secondary refinement

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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2021 03-24
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LF ladle refining furnace

LF ladle refining furnace consists of ladle, furnace cover, electrode heating system, and argon stirring system. Argon gas is blown into the breathable brick installed at the bottom of the ladle to stir the molten steel to complete the reaction between steel and slag.

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2021 03-15

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