Online multifunctional double-station LF (Low-Frequency) furnace system and online LF furnace steelmaking method

A double-station, multi-functional technology, applied in furnaces, crucible furnaces, furnace types, etc., can solve problems such as insufficient flexibility and reduced operating rate of LF furnaces, and achieve the effects of easy layout, shortened production cycle, and improved utilization

Inactive Publication Date: 2012-09-12
HUATIAN ENG & TECH CORP MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When producing steel types such as Q215, Q235, Q255, and 20, it is not necessary to use a ladle refining furnace. At this time, the operating rate of the LF furnace will be correspondingly reduced, and the flexibility is relatively insufficient.

Method used

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  • Online multifunctional double-station LF (Low-Frequency) furnace system and online LF furnace steelmaking method
  • Online multifunctional double-station LF (Low-Frequency) furnace system and online LF furnace steelmaking method
  • Online multifunctional double-station LF (Low-Frequency) furnace system and online LF furnace steelmaking method

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Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 , image 3 As shown, the online multifunctional double station LF furnace system in this embodiment includes an LF furnace, and the LF furnace includes a rotating electrode 2 that can move back and forth between the main processing position and the secondary processing position, and a ladle for steelmaking and a crane for transferring ladles; argon blowing devices, wire feeders, and temperature-measuring and sampling devices are installed on the main processing position and the secondary processing position, and the LF furnace is horizontally arranged on two parallel stations. The processing position is set on the tapping line of the steelmaking furnace in the front section; there are two ladle cars on the main processing position, which are respectively a ladle car 9 and a ladle car 10; there is one ladle car on the secondary processing position for ladle car 11

[0029] in,

[0030] When refining ordinary steel grades, the wire feeder at the main ...

Embodiment 2

[0042] The online LF furnace steelmaking method of this embodiment is that the above-mentioned online multi-functional double-station LF furnace system performs temperature measurement and sampling, wire feeding and argon blowing on the molten steel after primary smelting.

[0043] In this embodiment, the on-line multi-functional double-station LF furnace system is used to realize the functions of temperature measurement and sampling, wire feeding and argon blowing of the molten steel after primary smelting, which are realized by the argon blowing station when refining common steel types.

Embodiment 3

[0045] The online LF furnace steelmaking method of this embodiment is the above-mentioned online multi-functional double-station LF furnace system for temperature measurement and sampling of the molten steel after primary smelting, wire feeding machine, argon blowing and alloy addition to fine-tune the composition.

[0046] The use of the LF furnace in this embodiment to realize the CAS function has fully improved the utilization rate of the LF furnace. Because the LF furnace of the present invention has two wire feeders, two argon blowing devices, and two feeding systems to form two For an argon blowing station, when any mechanical problem occurs at one of the processing positions, you only need to select the selection electrode 2 to this processing position, and then the normal operation can be carried out at the other processing position without interruption.

[0047] The steelmaking system of this embodiment adopts the LF furnace of the present invention, fully utilizes the...

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Abstract

The invention discloses an online multifunctional double-station LF (Low-Frequency) furnace system and an online LF furnace steelmaking method and aims to solve the problems that the conventional LF furnace can be used in a steel refining process only and has low utilization efficiency and slight resource waste, a large area is occupied as an area is required to be independently arranged for accommodating the LF furnace and the like. The online multifunctional double-station LF furnace system comprises an LF furnace which is transversely arranged on two parallel stations. The functions of the traditional argon flushing station are realized by equipment in the LF furnace; or the functions of CAS (Control Automatic System) are realized by the equipment in the LF furnace, and the LF furnace is used for refining molten steel in the process of making refined steel. The online LF furnace steelmaking method comprises the following steps of: performing treatments of blowing argon, measuring the temperature and sampling, feeding wires and the like on the molten steel subjected to primary steelmaking by directly using the online multifunctional double-station LF furnace system. The online multifunctional double-station LF furnace system and the online LF furnace steelmaking method have the characteristics of low investment, small occupied land, high efficiency and the like, and are particularly suitable for improvement of old plants and old equipment.

Description

technical field [0001] The invention relates to an LF furnace system and an online LF furnace steelmaking method. Background technique [0002] Common steelmaking systems are: [0003] Such as figure 2 As shown, blast furnace→converter / electric furnace→argon blowing station / CAS→LF furnace→continuous casting machine. [0004] Argon blowing station: The argon blowing station is equipped with a wire feeding machine, an argon blowing system and a temperature measurement and sampling system. The main functions realized are temperature measurement and sampling, wire feeding and argon blowing. [0005] CAS: Composition adjustment by sealed argonbubbling is an out-of-furnace refining method for fine-tuning the alloy composition under argon sealing. In this method, argon is blown from the bottom of the ladle, and after the slag is discharged, the dipping cover is lowered, and argon is continued to be blown, and then alloy is added to fine-tune the composition. [0006] LF Furnace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/04F27B14/00
Inventor 崔荣峰
Owner HUATIAN ENG & TECH CORP MCC
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