Reduction
kinetics of titanomagnetite concentrate briquettes produced from Rossetta-llmenite
ore via 1.5 liter/min hydrogen flow rate were investigated at different
temperatures ranging from 600℃ to 950℃. It was found that the best reduction
properties were found at 950℃, so the kinetic models shown by the briquettes
at this temperature maybe: Diffusion control or Diffusion through ash layer
(crank-cinslling-Broushten equation). And the apparent activation energy
calculated for these models was 33.223 and 30.389 kJ/mole respectively. Also
the main crystalline phases of reduced briquettes at 950℃ were metallic iron
(syn. Fe), rutile (syn. TiO2) and some traces of magnetite (Fe3O4).
Cite this paper
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