The Role and Use of Aluminum in Steel Production

Larsen, G.

doi:10.1520/stp27689s

Ferroalloys and Other Additives to Liquid Iron and Steel 1981

DOI: 10.1520/stp27689s

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The Role and Use of Aluminum in Steel Production

G. Larsen¹

Abstract: Aluminum is very important in controlling steel oxidation level. As a result it also controls the ingot structure and hence the steel properties. This paper discusses the various types of aluminum used in steel production. The recovery of aluminum as a function of steel type and carbon level as well as the importance of consistent recovery are also discussed.

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2015

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Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel

Tavakoli¹,

Soltanieh²,

Aghajani

et al. 2015

jame

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This study was intended to investigate the effect of injection of aluminium into the crystallizator on type, composition and activity of inclusions in low carbon steel grade USD7. The steel is made in Zob-e-Ahan Isfahan factory and its porosities and inclusions results in the problem of rupturing during rolling process. To improve the quality of this steel, 2.4 mm diameter pure aluminum wires were injected in to the crystallizator at the rate of 2, 4, 6 or 8 m/min in certain periods and then sampling was done. The results indicated that much of the added aluminum changed to aluminum oxide slag, and the remaining part altered the chemical composition of the inclusions. Increased aluminum caused an increase in the activity of alumina and reduction in the activity of other oxides in the slag and existing inclusions in the melt. By increasing Al 2 O 3 activity from 0.313 to 0.649, the Al 2 O 3 formation and oxygen exclusion probability increased in the system. Scanning electron microscopy showed that without aluminium injection, most of inclusions were FeO-MnO type placed around existing porosities in the ingot. The optimum rate of aluminum injection was found to be 4 m/min.

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Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel

Tavakoli¹,

Soltanieh²,

Aghajani

et al. 2015

jame

View full text Add to dashboard Cite

show abstract

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The Role and Use of Aluminum in Steel Production

Cited by 1 publication

References 0 publications

Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel

Effect of Aluminium Injection into the Crystalizator on Type, Composition and Activity of Inclusions in Low Carbon Steel

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