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Influence of Direct Reduction Condition of Hematite Pellets with H 2 /CO on the Oxidation Behaviour of DRI in Air
Author(s) -
Towhidi Nasser
Publication year - 2003
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.200300238
Subject(s) - hematite , pellets , isothermal process , direct reduced iron , materials science , pelletizing , metallurgy , magnetite , combustion , iron ore , wüstite , chemistry , thermodynamics , composite material , physics , organic chemistry
Direct reduced iron (DRI) is the product of some commercial direct reduction (DR) of iron ore on base of natural gas. DRI tends to oxidize in air generally above 300 °C and then follows spontaneous combustion. To control the oxidation mechanism, several investigators have used different iron samples and methods. This paper gives the results of experimental work carried out for determination of DRI oxidation. The behaviour of DRI oxidation in air after isothermal reduction of hematite pellets with different size, temperature and H 2 / CO mixture is investigated.