Interfacial kinetics of hydrogen with liquid slag containing iron oxide
Identifieur interne : 001946 ( Main/Exploration ); précédent : 001945; suivant : 001947Interfacial kinetics of hydrogen with liquid slag containing iron oxide
Auteurs : Tetsuya Nagasaka [Japon] ; Mitsutaka Hino [Japon] ; Shiro Ban-Ya [Japon]Source :
- Metallurgical and Materials Transactions B [ 1073-5615 ] ; 2000-10-01.
Abstract
Abstract: Interfacial kinetics on the hydrogen reduction of liquid Fe t O in Fe t O-M x O y slag (M x O y = CaO, SiO2, Al2O3, and TiO2) has been studied at 1673 K. Because the rate of hydrogen reduction was very fast, the rate was controlled by gas-phase mass transfer under most of the experimental conditions. The effect of CaO or SiO2 addition on the interfacial chemical reaction rate of hydrogen reduction was empirically evaluated as a function of the ferrous-ferric ratio in the slag. The observed interfacial chemical reaction rates in Fe t O-CaO and Fe t O-SiO2 slags showed reasonable agreement with the estimated values. Most of the available literature data on the reduction rate of liquid iron oxide by solid carbon, hot metal, and reducing gases were also reviewed and compared with the results of the present work. It was found that the rate of hydrogen reduction of liquid iron oxide slag is much faster than that with other reducing agents such as solid carbon, carbon dissolved in the liquid iron, and CO gas.
Url:
DOI: 10.1007/s11663-000-0071-6
Affiliations:
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Because the rate of hydrogen reduction was very fast, the rate was controlled by gas-phase mass transfer under most of the experimental conditions. The effect of CaO or SiO2 addition on the interfacial chemical reaction rate of hydrogen reduction was empirically evaluated as a function of the ferrous-ferric ratio in the slag. The observed interfacial chemical reaction rates in Fe t O-CaO and Fe t O-SiO2 slags showed reasonable agreement with the estimated values. Most of the available literature data on the reduction rate of liquid iron oxide by solid carbon, hot metal, and reducing gases were also reviewed and compared with the results of the present work. It was found that the rate of hydrogen reduction of liquid iron oxide slag is much faster than that with other reducing agents such as solid carbon, carbon dissolved in the liquid iron, and CO gas.</div></front></TEI><affiliations><list><country><li>Japon</li></country><region><li>Région de Tōhoku</li></region><settlement><li>Sendai</li></settlement><orgName><li>Université du Tōhoku</li></orgName></list><tree><country name="Japon"><region name="Région de Tōhoku"><name sortKey="Nagasaka, Tetsuya" sort="Nagasaka, Tetsuya" uniqKey="Nagasaka T" first="Tetsuya" last="Nagasaka">Tetsuya Nagasaka</name></region><name sortKey="Ban Ya, Shiro" sort="Ban Ya, Shiro" uniqKey="Ban Ya S" first="Shiro" last="Ban-Ya">Shiro Ban-Ya</name><name sortKey="Hino, Mitsutaka" sort="Hino, Mitsutaka" uniqKey="Hino M" first="Mitsutaka" last="Hino">Mitsutaka Hino</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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