Improvement of steel cleanliness by controlling slag composition

B. H. Yoon; K. H. Heo; J. S. Kim; H. S. Sohn

doi:10.1179/030192302225004160

Improvement of steel cleanliness by controlling slag composition

B. H. Yoon, K. H. Heo, J. S. Kim, H. S. Sohn

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Abstract

The properties of slag are very important in the improvement of steel cleanliness. In particular, the value of %CaO/%Al₂O₃ ratio, slag basicity, fluidity, and oxygen activity in the slag are considered to affect the steel cleanliness directly. To control these values effectively, the method of deoxidation and slag composition control via additives has been changed. The effect of oxygen content before tapping was investigated. By optimising these factors, the total oxygen content of bearing steel was reduced from 12 to 8 ppm.

Original language	English
Pages (from-to)	215-218
Number of pages	4
Journal	Ironmaking and Steelmaking
Volume	29
Issue number	3
DOIs	https://doi.org/10.1179/030192302225004160
State	Published - Jun 2002

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author = "Yoon, {B. H.} and Heo, {K. H.} and Kim, {J. S.} and Sohn, {H. S.}",

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AB - The properties of slag are very important in the improvement of steel cleanliness. In particular, the value of %CaO/%Al2O3 ratio, slag basicity, fluidity, and oxygen activity in the slag are considered to affect the steel cleanliness directly. To control these values effectively, the method of deoxidation and slag composition control via additives has been changed. The effect of oxygen content before tapping was investigated. By optimising these factors, the total oxygen content of bearing steel was reduced from 12 to 8 ppm.

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Improvement of steel cleanliness by controlling slag composition

Abstract

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