Primetals Technologies Austria Gmbh

Roland Eisl

Johann Wurm

Norbert Rein

Hanspeter Ofner

Bernhard Hiebl

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 Hflows 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 dof the oxidic iron carrier particles introduced into the fluidized bed, it is above the theoretical suspension velocity Uand is less than or equal to U.

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Regau, Austria

Roland Eisl