Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/10816
Title: Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process.
Authors: Trindade, Luis Carlos
Peixoto, Johne Jesus Mol
Silva, Carlos Antônio da
Baston, Eduardo Prado
Lofrano, Renata Carolina Zanetti
França, Alexandre Bôscaro
Issue Date: 2018
Citation: TRINDADE, L. C. et al Influence of obstruction at gas-injection nozzles (number and position) in RH degasser process. Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, v. 1, p. 1-7, 2018. Disponível em: <https://link.springer.com/article/10.1007%2Fs11663-018-1474-6>. Acesso em: 13 fev. 2019.
Abstract: One of the main problems that affects Ruhrstahl-Heraeus (RH) degasser circulation rate is the obstruction of the gas-injection nozzles. This study aims to elucidate the effects of obstructions in quantity and location using a physical model that depicts 16 injection nozzles on the up-leg distributed symmetrically in 2 rings (8 nozzles/ring). We simulated six, symmetric and nonsymmetric, obstruction conditions to gas flow. The gas-flow rate was varied from 30 to 130 NL/min. The results for symmetric obstructions when the gas-flow rate is kept constant, indicates that the circulation rate in the equipment does not significantly change. However, when these obstructions are non-symmetric, the circulation rate varies drastically, even when the gas-flow rate is kept constant. The analysis of the experimental data generated from this study allowed to determine an equation for the circulation rate that takes into consideration the number and distribution of blocked nozzles.
URI: http://www.repositorio.ufop.br/handle/123456789/10816
metadata.dc.identifier.uri2: https://link.springer.com/article/10.1007%2Fs11663-018-1474-6
ISSN:  15431916
Appears in Collections:DEMET - Artigos publicados em periódicos

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