Measurement of effective diffusivity for CO-CO 2 gas mixture in hot briquetting carbon composite iron ore by Wicke-Kallenbach method

Yasuaki Ueki, Kazuaki Nitta, Ko-Ichiro Ohno, Takayuki Maeda, Koki Nishioka, Masakata Shimizu

Research output: Contribution to journalArticle

Abstract

Effective diffusivity for CO-CO 2 gas mixture in Hot Briquetting Carbon Composite Iron Ore (CCB) at a temperature range of room temperature to 673 K was measured by Wicke-Kallenbach Method. The results obtained are summarized as follows; (1) Effective diffusivity of CO-CO 2 gas mixture through CCB increased with increasing temperature and fractional reaction of CCB. The effective diffusivity for CO-CO 2 system in CCB was proportional to the 1.50 power of temperature. (2) Kundsen diffusion and surface diffusion are negligible in regard to diffusions of CO and CO 2 in CO-CO 2 gas mixture in CCB. Therefore, diffusions of CO and CO 2 in CO-CO 2 gas mixture in CCB are described by molecular diffusion.

Original languageEnglish
Pages (from-to)17-21
Number of pages5
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume95
Issue number1
DOIs
Publication statusPublished - Apr 6 2009

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Measurement of effective diffusivity for CO-CO <sub>2</sub> gas mixture in hot briquetting carbon composite iron ore by Wicke-Kallenbach method'. Together they form a unique fingerprint.

  • Cite this