Evaluation of gas-liquid reaction rate at bath surface by the gas adsorption and desorption tests

Shin ya Kitamura, Ken ichiro Miyamoto, Ryoji Tsujino

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

The separated estimation of the reaction rate at bath surface (surface reaction) and at Ar bubble interface flotating in the bath (bubble reaction) was achieved by the measurements of gas adsorption and desorption rate. The influence of various factors on the surface reaction rate of gas and liquid reaction under the gas stirring condition was investigated for water and molten steel systems. The following points were clarified: 1) The ratio of surface reaction rate to the bubble reaction rate for N2-molten steel system is much larger than that for O2-water system. 2) Most of the surface reaction occurs at the flotating area of Ar gas bubbles at the bath surface (activated surface area). 3) The surface reaction rate increases in proportion to one-second power of Ar gas flow rate and in inverse proportion to two-third power of the pressure. In addition, it is strongly influenced by the gas injection depth. 4) The surface reaction rate well corresponds to the newly introduced parameter for the N2-molten steel and O2-water system, considering the activated surface area, gas flow rate, pressure and gas injection depth.

Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume80
Issue number2
DOIs
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Evaluation of gas-liquid reaction rate at bath surface by the gas adsorption and desorption tests'. Together they form a unique fingerprint.

Cite this