Title

REDUCTION OF TUNDISH HEATING TIME THROUGH A NEW TUNDISH SPRAY MASS TECHNOLOGY

REDUCTION OF TUNDISH HEATING TIME THROUGH A NEW TUNDISH SPRAY MASS TECHNOLOGY

Authorship

MARTINS, RODRIGO SEARA; MARTINEZ, DIEGO CAMARGOS BAR; RODRIGUES, ALBERTO CÉSAR SOARES; COSTA, MARCELO FIGUEIREDO; PEDRO, MAYCON BEZERRA

MARTINS, RODRIGO SEARA

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MARTINEZ, DIEGO CAMARGOS BAR

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RODRIGUES, ALBERTO CÉSAR SOARES

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COSTA, MARCELO FIGUEIREDO

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PEDRO, MAYCON BEZERRA

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DOI

10.5151/2594-5300-42198

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Abstract

The preheating time of the tundish in continuous casting is a critical factor in the tundish projection process. This process includes the drying and preheating stages of the refractory material. A new technology for projection refractory mass was developed, which eliminates the drying stage, thereby increasing the availability of tundishes to be used. Industrial tests were conducted with tundishes using the test refractory mass, with the drying stage eliminated, achieving a 52% reduction in preheating time. Additionally, there were benefits such as reduced burner gas consumption, lower CO2 emissions, noise reduction, and an improved thermal comfort for the workers.

THE PREHEATING TIME OF THE TUNDISH IN CONTINUOUS CASTING IS A CRITICAL FACTOR IN THE TUNDISH PROJECTION PROCESS. THIS PROCESS INCLUDES THE DRYING AND PREHEATING STAGES OF THE REFRACTORY MATERIAL. A NEW TECHNOLOGY FOR PROJECTION REFRACTORY MASS WAS DEVELOPED, WHICH ELIMINATES THE DRYING STAGE, THEREBY INCREASING THE AVAILABILITY OF TUNDISHES TO BE USED. INDUSTRIAL TESTS WERE CONDUCTED WITH TUNDISHES USING THE TEST REFRACTORY MASS, WITH THE DRYING STAGE ELIMINATED, ACHIEVING A 52% REDUCTION IN PREHEATING TIME. ADDITIONALLY, THERE WERE BENEFITS SUCH AS REDUCED BURNER GAS CONSUMPTION, LOWER CO2 EMISSIONS, NOISE REDUCTION, AND AN IMPROVED THERMAL COMFORT FOR THE WORKERS.

Keywords

Tundish preheating, Gas consumption, CO2 emission reduction, Operational stability.

Tundish preheating, Gas consumption, CO2 emission reduction, Operational stability