Use of Al‐Killed Ladle Furnace Slag in Si‐Killed Steel Process to Reduce Lime Consumption, Improve Slag Fluidity

Behera, Narottam; Raddadi, Ahmad; Ahmad, Shahreer; Tewari, Neeraj; Zeghaibi, Othman

doi:10.1002/9781119333197.ch110

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Improving the Technology Of Steel Deoxidation Grade St 37-31

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2020

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“…In addition, compliance with the rational parameters of the metal at tapping from EAF will reduce the contamination of steel with non-metallic inclusions [11][12][13][14][15][16][17][18], as well as reduce the consumption of aluminum for deoxidation of slag in the LF [19][20][21][22].…”

Section: Improving the Technology Of Steel Deoxidation Grade St 37-3mentioning

confidence: 99%

Improving the Efficiency of Steel De-Oxidation at the Ural Steel

Shapovalov

Dema

Nefed’ev

2020

MSF

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The analysis of the results of steel de-oxidation with manganese and silicon during tapping from an arc furnace in the Ural Steel is carried out. It is shown that the absorption of manganese and silicon during de-oxidation varies widely: from 33.0 to 88.4% (average 68.8%) for manganese and from 25.9 to 79.8% (average 63.8%) for silicon. The main causes of high varies and low absorption of deoxidizing agents were established: low carbon content and high metal overheating before de-oxidation. A statistical analysis of St 37-3 steel de-oxidation data was performed with the aim of improving the efficiency of steel de-oxidation technology in a ladle. The regression equations are obtained, allowing to calculate the assimilation of deoxidizers and the consumption of ferroalloys, depending on the temperature and carbon content in the metal during tapping from the arc furnace.

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