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What is secondary refining?

Secondary refining refers to the refining outside the traditional steelmaking furnace (such as open hearth furnace, refining furnace and electric furnace). The main tasks of refining are deoxidation, desulfurization, dephosphorization, decarburization, inclusion removal, alloying and fine adjustment of composition. Statistics on the world crude steel output show that the world crude steel output has continued to grow in ups and downs in the past 30 years.

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2022 02-21
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Ladle furnace’s main functions and benefits for companies

Liquid steel is heated by electric arc to obtain new heat energy, which can not only add alloy and adjust composition during ladle refining, but also add slag, which is convenient for deep desulfurization and deoxidation of liquid steel. What’s more, the start pouring temperature of liquid steel required by continuous casting is guaranteed, which is conducive to the improvement of dry slab quality.

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2021 10-13
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The development of secondary refining furnace

In order to homogenize the composition and temperature, a gas stirring process in the ladle appeared. The most striking thing is the use of secondary refining, which greatly improves the output and quality of steel. However, what is the main task and purpose of secondary refining? Separate molten s

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2021 01-15
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Overview of LF refining furnace

LF refining furnace is mainly composed of upper tank, middle tank, lower tank, circulation pipe and immersion pipeThe working principle of LF furnace:LF furnace system equipment is a secondary refining process setting equipment used to produce high-quality molten steel. The entire molten steel smelt

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2020 12-02
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Steelmaking electric furnace: introduction to the advantages of its tube water-cooled furnace cover

The existing furnace covers of steel-making electric furnaces mostly adopt the structure of masonry refractory bricks. The disadvantages of the furnace covers of this structure are many brick cracks, poor overall performance, high energy consumption, short service life, and long maintenance.

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2020 11-18

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