Ladle Refining Method Using Ultrasonic to Improve Kinetic Conditions

A ladle refining and ultrasonic technology is applied in the field of ladle refining to achieve the effects of reducing diffusion resistance, reducing inclusion and gas content in molten steel, and enhancing stirring effect.

Inactive Publication Date: 2011-11-30
UNIV OF SCI & TECH LIAONING
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The invention provides a ladle refining method using ultrasonic waves to improve dynamic conditions. Ultrasonic waves are input into molten steel to solve the problem of stirring dead zone in bottom blowing gas stirring, improve the stirring effect, remove impurities and inclusions in molten steel, and produce clean steel.

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  • Ladle Refining Method Using Ultrasonic to Improve Kinetic Conditions

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Embodiment Construction

[0017] Such as figure 1 As shown, the ladle refining method using ultrasonic waves to improve dynamic conditions is implemented according to the following process:

[0018] A circular piezoelectric transducer 4 is arranged at the center of the bottom of the ladle to provide an ultrasonic wave source, and four circular piezoelectric transducers 4 are arranged at four positions evenly distributed on the side wall of the ladle to provide an ultrasonic wave source. The position where the energy device is in contact with the ladle lining 2 passes through circulating cooling water 5 . Bottom blowing argon gas 3 inlets are provided on both sides of the circular piezoelectric transducer 4 . After tapping the converter or electric furnace, pour the molten steel 1 into the ladle, put the ladle in the refining station, start blowing argon gas 3 at the bottom of the ladle to stir, add slagging and deoxidizing materials, and open the bottom center and side wall of the ladle at the same ti...

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Abstract

The invention discloses a ladle refining method which uses ultrasonic wave to improve dynamic conditions, and ultrasonic wave is input into molten steel to solve the problem of stirring dead zone in bottom blowing gas stirring. The invention includes the following contents: after the converter or electric furnace taps steel, pour the molten steel into the ladle, place the ladle in the refining station, start blowing argon gas at the bottom of the ladle to stir, add slagging and deoxidizing materials, and turn on the ultrasonic generator at the same time , input ultrasonic waves at the bottom and side walls of the ladle to stir the molten steel. The power of the ultrasonic is determined by the weight of the molten steel in the ladle. The ultrasonic power range is 5-500kW / ton of molten steel. The input time of the ultrasonic is the time taken for the ladle to finish refining. The invention can reduce the inclusion and gas content of molten steel, and significantly improve the ladle refining effect.

Description

technical field [0001] The invention relates to a ladle refining method in the steelmaking process, in particular to a ladle refining method using ultrasonic wave to improve dynamic conditions. Background technique [0002] The quality of steel is related to the purity of steel. In recent years, with the improvement of users' requirements for steel quality, the requirements for purity of molten steel have also increased accordingly. Clean steel smelting technology has always been the main subject of international steelmaking technology research. Desulfurization of molten steel, The thermodynamic conditions of dephosphorization and deoxidizers have been able to remove sulfur, phosphorus, and oxygen content in molten steel to extremely low levels, which meets the conditions for clean steel smelting, but the kinetic conditions in the ladle refining process are mainly based on bottom blowing gas stirring, and its role is Use the characteristics of its circulating flow field to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C21C7/072
Inventor 沈明钢亢淑梅张振山李成威金辉
Owner UNIV OF SCI & TECH LIAONING
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