Flow Characterization and Inclusions Removal in a Slab Tundish Equipped with Bottom Argon Gas Feeding

Autor:	J. A. Ramos-Banderas, E. Torres-Alonso, C. A. Hernández-Bocanegra, C. E. Aguilar-Rodriguez, Gildardo Solorio-Díaz
Rok vydání:	2018
Předmět:	Argon Materials science Metals and Alloys chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Residence time (fluid dynamics) Residence time distribution Tundish 020501 mining & metallurgy Volumetric flow rate 0205 materials engineering chemistry Mechanics of Materials Materials Chemistry Slab Fluid dynamics Particle Composite material 0210 nano-technology
Zdroj:	Metallurgist. 61:1055-1066
ISSN:	1573-8892 0026-0894
DOI:	10.1007/s11015-018-0607-0
Popis:	The fluid dynamics of a straight tundish was studied when Ar-gas was fed through the bottom, using mathematical simulation. Flow rates of 15 and 40 liters/min of argon in three locations into the tundish – near input steel, center, and near output steel – were analyzed. A stochastic model was employed for determining statistically the particle amount (emulating alumina particles) in the inclusions removal. From these calculations and those of the Residence Time Distribution (RTD) curves, we found a direct relationship to improve steel quality. Specifically, removal of the smaller nonmetallic inclusions was significantly enhanced for cases with the lowest dead volume fraction; they correspond to those of the highest averaged residence time. Therefore, it was found that it is even possible to reduce argon consumption and still obtain good results of steel cleanness.
Databáze:	OpenAIRE
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