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AssigneePrimetals Technologies Austria GmbH
InventorsRoland Eisl, Bernhard Hiebl, Hanspeter Ofner, Norbert Rein, Johann Wurm
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The invention relates to a method for the direct reduction of oxidic iron carrier particles to a reduction product in a fluidized bed through which a reduction gas containing 30-100 mol % hydrogen H2 flows in crossflow. At least 90% by mass of oxidic iron carrier particles introduced into the fluidized bed have a particle size of less than or equal to 200 micrometers. The superficial velocity U of the reduction gas flowing through the fluidized bed is set between 0.05 m/s and 1 m/s such that, for the particle size d equal to d30 of the oxidic iron carrier particles introduced into the fluidized bed, it is above the theoretical suspension velocity Ut and is less than or equal to Umax.
1-15. (canceled)
A process of direct reduction of oxidic iron-bearing particles to a reduction product in a fluidized bed, comprising:
A process of direct reduction of oxidic iron-bearing particles to a reduction product in a fluidized bed, comprising:
Dependencies are inferred from the claim text.