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

doi:10.2355/tetsutohagane.95.17

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 journal › Article › peer-review

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 language	English
Pages (from-to)	17-21
Number of pages	5
Journal	Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume	95
Issue number	1
DOIs	https://doi.org/10.2355/tetsutohagane.95.17
Publication status	Published - Apr 6 2009

All Science Journal Classification (ASJC) codes

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

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10.2355/tetsutohagane.95.17

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

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.",

author = "Yasuaki Ueki and Kazuaki Nitta and Ko-Ichiro Ohno and Takayuki Maeda and Koki Nishioka and Masakata Shimizu",

year = "2009",

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doi = "10.2355/tetsutohagane.95.17",

language = "English",

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T1 - Measurement of effective diffusivity for CO-CO 2 gas mixture in hot briquetting carbon composite iron ore by Wicke-Kallenbach method

AU - Ueki, Yasuaki

AU - Nitta, Kazuaki

AU - Ohno, Ko-Ichiro

AU - Maeda, Takayuki

AU - Nishioka, Koki

AU - Shimizu, Masakata

PY - 2009/4/6

Y1 - 2009/4/6

N2 - 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.

AB - 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.

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

Abstract

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