Rotating powder spraying device used for modifying of steel ladle slag and modifying method

A rotating device and upgrading technology, which is applied in the field of steelmaking, can solve problems affecting the vacuum treatment process of equipment, product quality waste products, and adverse effects of the vacuum system, so as to avoid uneven thickness, reduce impurities, and eliminate flocculation.

Active Publication Date: 2017-10-13
ANGANG STEEL CO LTD
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Problems solved by technology

[0006] Causes secondary oxidation of molten steel, on the one hand, the alloy element aluminum in molten steel is lost, and on the other hand, a large amount of alumina inclusions are formed. During the continuous casting process, the alumina in the steel is very easy to adhere to the continuous casting nozzle. Causes nozzle clogging during the continuous casting process, affects the smooth progress of continuous casting production, and causes unstable casting speed during continuous casting. If the floc falls off during the casting process, large particle inclusions will be formed in the slab, causing Product quality problems and waste products
When the floccula

Method used

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Example Embodiment

[0021] The present invention will be further described below in conjunction with specific embodiments:

[0022] Such as figure 1 , 2 As shown, a rotary powder spraying device for upgrading ladle slag includes a lifting device, an anti-splashing device 2, a feeding system 3, a spraying system 10, a rotating device 4, and a powder spraying gun 7. The powder spraying gun 7 is an inverted T-shaped hollow tube, with spray holes at both ends of the tube head, and refractory material is wrapped on the outside; the rotating device 4 includes a rotating joint 13 and a motor 14 with a hollow shaft inside. The rotating joint 13 is a tee as a whole Structure, the internal bearing is connected with the upper end of the hollow shaft 15 in the motor, the rotary joint 13 is connected with the pipeline in the horizontal direction, the lower end of the hollow shaft 15 is connected with the upper end of the powder spray gun 7 through the flange 16; the splash prevention device 2 is an upper small The

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Abstract

The invention provides a rotating powder spraying device used for modifying of steel ladle slag and a modifying method. The rotating powder spraying device comprises a lifting unit, an anti-splashing unit, a feeding system, a spraying and blowing system, a rotating unit and a powder spraying gun. The powder spraying gun is an inverted-T-shaped hollow tube. The rotating unit comprises a rotating connector and a motor. The whole rotating connector is of a three-way structure. An inner bearing of the rotating connector is connected with the upper end of a hollow shaft in the motor. The rotating connector in the horizontal direction communicates with a pipeline. The lower end of the hollow shaft is connected with the upper end of the powder spraying gun through a flange. The anti-splashing unit is a big-end-down cylinder. The rotating unit is located in the anti-splashing unit, and the pipeline penetrates through the anti-splashing unit to communicate with the feeding system and the spraying and blowing system through metal hoses correspondingly. The anti-splashing unit is connected with the lifting unit. Flux in the feeding system and carrier gas in the spraying and blowing system are blown into the powder spraying gun through the rotating unit, so that powder is sprayed in a rotating mode. The powder is more uniformly laid between the surface of molten steel and the steel ladle slag through rotating spraying and blowing, and pollution of the steel ladle slag to the molten steel is completely avoided.

Description

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Claims

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Application Information

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Owner ANGANG STEEL CO LTD
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