Dispersion type integral steel ladle bottom blowing air brick as well as forming process and application method thereof

Abstract

The invention relates to a dispersion type integral steel ladle bottom blowing air brick and a forming process and application method thereof. The dispersion type integral steel ladle bottom blowing air brick comprises a steel ladle bottom blowing air brick body, a dispersion type vent plug, a protection body, a steel shell, an upper air chamber, a safety warning device, a slit air channel, a lower air chamber, a bottom cover plate and an air inlet pipe. By increasing the ventilation area of a dispersion type ventilation part, improving the structure and the forming process of the dispersion type ventilation part and innovating the application method of the steel ladle bottom blowing air brick, the industrial problems that the dispersion type ventilation brick is small in ventilation volume, uneven in ventilation and short in service life are solved; and compared with an air brick with the long service life and the high blow-through rate disclosed by the patent with the application patent number of 201420093492.9, the service life of the air brick with the long service life and the high blow-through rate is prolonged by more than 4 heat times on year-on-year basis, the total oxygen content in a finished product is reduced by 1.7 ppm or more on year-on-year basis, and the oxygen burning cleaning time of the air brick is reduced by 10 seconds or more on year-on-year basis.

Description

technical field [0001] The invention relates to a diffuse type integral ladle bottom blowing air brick and its molding process and application method, belonging to the technical field of metallurgical refractory materials. Background technique [0002] Ladle bottom argon blowing is a simple and efficient out-of-furnace refining technology, which can even out the composition and temperature of molten steel, and promote the physical and chemical reactions of molten steel refining and the floating and removal of inclusions. It is widely used at home and abroad. The permeable brick is the most critical functional element of argon blowing at the bottom of the ladle. It mainly has two structural types: diffuse type and slit type. The slit type permeable brick has the advantages of large ventilation, good mixing effect and long service life, and is widely used. In order to improve the metallurgical effect of ladle bottom blowing to remove inclusions, in recent years, the dispersion...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a diffused integral ladle bottom blowing ventilation brick and its forming process and application method, by increasing the venting area of ​​the diffused venting part, improving the structure and molding process of the diffused venting part , The application method of the innovative ladle bottom blowing air brick solves the industry problems of small air flow, uneven air ventilation and low service life of the diffused air brick. The total oxygen content in the material is reduced by more than 1.7ppm year-on-year, and the oxygen-burning cleaning time of the breathable brick is reduced by more than 10s year-on-year

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