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Modification of oxide inclusions in calcium-treated Al-killed high sulphur steels
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Gollapalli, Veerababu, Rao, M. B. Venkata, Karamched, Phani S., Borra, Chenna Rao, Roy, Gour G. and Srirangam, Prakash (2019) Modification of oxide inclusions in calcium-treated Al-killed high sulphur steels. Ironmaking & Steelmaking, 46 (7). pp. 663-670. doi:10.1080/03019233.2018.1443382
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Official URL: http://dx.doi.org/10.1080/03019233.2018.1443382
Abstract
A study has been carried out to understand the modification of alumina inclusions in Al-killed high sulphur steel with calcium treatment. For calcium treatment to be effective, a general practice is to desulphurise the steel to prevent the formation of solid CaS inclusions that are harmful to steel quality and final properties. To avoid this additional desulphurising step, the authors developed a new approach of calcium treatment of steel at an industrial scale. This approach involves treating the liquid steel with calcium treatment at low aluminium levels which enables formation of liquid calcium aluminate inclusions (C12A7) in the melt and then adding remaining amount of required aluminium. Based on this principle, Al-S diagram has been developed and calcium treatment has been modified accordingly. The inclusion transformation and morphology were studied using scanning electron microscope /energy dispersive spectroscopy analysis and. activity of CaS was calculated.
| Item Type: | Journal Article | ||||||||||
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
| Journal or Publication Title: | Ironmaking & Steelmaking | ||||||||||
| Publisher: | Maney Publishing | ||||||||||
| ISSN: | 0301-9233 | ||||||||||
| Official Date: | 2019 | ||||||||||
| Dates: |
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| Volume: | 46 | ||||||||||
| Number: | 7 | ||||||||||
| Page Range: | pp. 663-670 | ||||||||||
| DOI: | 10.1080/03019233.2018.1443382 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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