Abstract
In ironmaking processes using coal-ore pellets or mixtures, it is possible that volatiles can contribute to reduction. In particular with deep beds or multiple pellet layers that has high temperature gradients from the top to lower layers, the lower material will release their volatiles when the upper level is at temperatures where reduction can occur. Therefore, as part of understanding the fundamental mechanisms associated with volatile reduction, the rate of iron ore reduction by hydrogen at lower temperatures was studied. Results have shown hydrogen reduction to be significant above 500°C and indicate a mixed control mechanism of nucleation, mass transfer and chemical kinetics.
| Original language | English |
|---|---|
| Pages (from-to) | 325-336 |
| Number of pages | 12 |
| Journal | AISTech - Iron and Steel Technology Conference Proceedings |
| Volume | 1 |
| Publication status | Published - 2004 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Mechanism of iron oxide reduction by simulated volatiles. / Sohn, Il; Fruehan, Richard J.
In: AISTech - Iron and Steel Technology Conference Proceedings, Vol. 1, 01.12.2004, p. 325-336.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Mechanism of iron oxide reduction by simulated volatiles
AU - Sohn, Il
AU - Fruehan, Richard J.
PY - 2004/12/1
Y1 - 2004/12/1
N2 - In ironmaking processes using coal-ore pellets or mixtures, it is possible that volatiles can contribute to reduction. In particular with deep beds or multiple pellet layers that has high temperature gradients from the top to lower layers, the lower material will release their volatiles when the upper level is at temperatures where reduction can occur. Therefore, as part of understanding the fundamental mechanisms associated with volatile reduction, the rate of iron ore reduction by hydrogen at lower temperatures was studied. Results have shown hydrogen reduction to be significant above 500°C and indicate a mixed control mechanism of nucleation, mass transfer and chemical kinetics.
AB - In ironmaking processes using coal-ore pellets or mixtures, it is possible that volatiles can contribute to reduction. In particular with deep beds or multiple pellet layers that has high temperature gradients from the top to lower layers, the lower material will release their volatiles when the upper level is at temperatures where reduction can occur. Therefore, as part of understanding the fundamental mechanisms associated with volatile reduction, the rate of iron ore reduction by hydrogen at lower temperatures was studied. Results have shown hydrogen reduction to be significant above 500°C and indicate a mixed control mechanism of nucleation, mass transfer and chemical kinetics.
UR - http://www.scopus.com/inward/record.url?scp=18044387777&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18044387777&partnerID=8YFLogxK
M3 - Conference article
VL - 1
SP - 325
EP - 336
JO - AISTech - Iron and Steel Technology Conference Proceedings
JF - AISTech - Iron and Steel Technology Conference Proceedings
SN - 1551-6997
ER -