Development of a novel degassing process consisting with single large immersion snorkel and a bottom bubbling ladle

Shin Ya Kitamura, Hiroyuki Aoki, Ken Ichiro Miyamoto, Hitoshi Furuta, Kosuke Yamashita, Kimitoshi Yonezawa

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A novel vacuum degassing process consisting of a large immersion snorkel and a bottom bubbling ladle has been invented for the efficient production of ultra-low carbon stool. This process has been confirmed by industrial scale test using 175 and 350 t ladle and named REDA (Revolutionary degassing activator). The carbon content reaches 10 ppm in 15 to 20 min treatment, and decreases to 4 ppm without any stagnation. As REDA has a wide bubble activated surface area and a deep injection position, relatively low gas flow rate is necessary to produce ultra-low carbon steel efficiently.

Original languageEnglish
Pages (from-to)455-459
Number of pages5
JournalIsij International
Volume40
Issue number5
DOIs
Publication statusPublished - 2000 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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