Premium
Reduction of Solid Iron Oxide by Carbon
Author(s) -
Moon IIJoon,
Jung SungMo
Publication year - 2008
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200806181
Subject(s) - thermogravimetric analysis , iron oxide , carbon fibers , oxide , activation energy , atmospheric temperature range , kinetic energy , materials science , reaction rate , inorganic chemistry , chemistry , reduction (mathematics) , analytical chemistry (journal) , metallurgy , thermodynamics , catalysis , organic chemistry , composite material , physics , geometry , mathematics , quantum mechanics , composite number
The reduction of pre‐reduced iron oxide by carbon was investigated from a kinetic viewpoint. The experimental procedure included thermogravimetric analysis to measure the weight change of the iron oxide pellet. The activation energy of the overall reaction was calculated to be 210 kJ/mol in the temperature range from 1273 to 1573 K. The overall reduction rate of FeO by carbon is believed to be mixed‐controlled by the Boudouard reaction and by the FeO reduction by CO gas in the temperature range investigated. The critical carbon concentration for the FeO reduction was estimated under the assumption that the activities of FeO and Fe are unity.