Mixing Time in Cylindrical Bath Agitated by Plunging Jet.

• Abe Koji

  Graduate Student, Graduate School of Engineering, Hokkaido University

• Iguchi Manabu

  Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University

Abstract

A plunging jet is a powerful tool for the agitation of a bath as well as the entrapment of fine powder into the bath. As a fundamental model study of the development of novel refining processes using a plunging jet, the mixing time in a cylindrical water bath agitated by the jet was measured with an electric conductivity meter. The measured values of the mixing time depended significantly on the aspect ratio of the bath. Two empirical equations of the mixing time were proposed for two aspect ratio regimes; regime 1 (aspect ratio≅0.31.0) and regime 2 (aspect ratio≅1.02.0). Uniform mixing was established in regime 1 just after the completion of plunging. The mixing time in regime 2 became much longer than that in regime 1. The relationship between the mixing time and the rate of dissipation of energy density was also discussed. In regime 1, a plunging jet had higher mixing ability than gas injection.

Journal

• ISIJ International

  ISIJ International 42 (6), 581-587, 2002

  The Iron and Steel Institute of Japan

Keywords

• steelmaking
• refining
• plunging jet
• mixing time

Details

• CRID: 1390001206453134208
• NII Article ID: 10008563866
• NII Book ID: AA10680712
• DOI: 10.2355/isijinternational.42.581
• COI: 1:CAS:528:DC%2BD38XlslKht78%3D
• ISSN: 13475460
• ISSN: 09151559
• ISSN: http://id.crossref.org/issn/09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/42/6/42_6_581/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed