ESTUDOS DA TÉCNICA POST-STIRRING E MECANISMOS ENVOLVIDOS

This paper presents the results of the application of the post-stirring technique in the BOF of Usiminas, in Ipatinga. The tests consisted basically in the rinsing of the metal bath with argon injection after finished the oxygen blowing, through tuyeres placed in the bottom of the converters, for a...

Full description

Saved in:
Bibliographic Details
Published in:Tecnologia em metalurgia, materiais e mineração materiais e mineração, 2012-01, Vol.9 (1), p.16
Main Authors: Cardoso Filho, Amilton Carlos P, Gonçalves, Hugo Filipe P, Carneiro, Carlos André R, Araújo, Túlio Carvalho da S
Format: Article
Language:Portuguese
Subjects:
Argon
Argon injection
Basic converters
Blowing
Bottom blown converters
Consumption
Deoxidizing
Optimization
Oxygen content
Oxygen steel making
Phosphorus
Phosphorus content
Reduction (metal working)
Rinsing
Steel converters
Steels
Stirring
Tuyeres
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents the results of the application of the post-stirring technique in the BOF of Usiminas, in Ipatinga. The tests consisted basically in the rinsing of the metal bath with argon injection after finished the oxygen blowing, through tuyeres placed in the bottom of the converters, for a pre-established period. The results showed that the poststirring technique allowed a mean reduction of 250 ppm in the oxygen content and 30 ppm in the phosphorus content of the steel. It is possible to conclude that post-stirring technique is effective in the process optimization. Besides reducing the phosphorus content in the steel, it is verified a huge opportunity to reduce the consumption of deoxidizing materials, due to a decrease in the oxygen level, reducing costs and improving the steel cleanness.
ISSN:2176-1515
2176-1523
DOI:10.4322/tmm.2012.003