Title

TAP HOLE FREE OPENING OPTIMIZATION IN THE EAF THROUGH MONITORIZED GRAIN SIZE DISTRIBUTION CONTROL OF THE EBT FILLER SAND. LABORATORY TESTING & INDUSTRIAL APPLICATION

Authorship

Rodriguez, Esteban Ruisanchez; Rubio, Javier Martinez

Rodriguez, Esteban Ruisanchez

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Rubio, Javier Martinez

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DOI

10.5151/1516-392X-26550

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Abstract

In this paper we will discuss the process of the grain size customization of the EBT filler sand in relationship to the technical characteristics of the furnace and its tap hole. By customizing the grain size distribution, the glassy area formed on the top of the tap hole varies and supports differently the metallurgical pressure of the molten steel providing increased free opening speeds. Taylor made sand improves therefore the free opening rate, reduces the tap to tap time and increases the lifespan of the tap

Keywords

Eccentric bottom tapping, Dunite, Filler sand, Innovative

Innovative