Patent ID: 7854909
Filing Date: 2010-12-21
Classification: B01J,C21B,F27B

Abstract:
1. A process for treating a finely particulate charge material, the method comprising: introducing the charge material and a reduction gas into a fluidized bed chamber from a region external to the fluidized bed chamber and there forming a fluidized bed, the reduction gas not being heated prior to its introduction into the fluidized bed chamber, wherein a cyclone is arranged in the fluidized bed chamber above the fluidized bed; at least partially reacting the reduction gas in the fluidized bed, then discharging the reduction gas from the fluidized bed to outside the fluidized bed; at least partially reprocessing the exited, at least partially reacted reduction gas in a chemical reaction with a reactant in a device for reprocessing the reduction gas, and operating the device for reprocessing in the fluidized bed chamber above the fluidized bed and there producing thermal energy from the chemical reaction, the device for reprocessing comprising at least one of a burner and a nozzle introducing an oxidizing agent from a region external to the fluidized bed chamber into the fluidized bed chamber; at least partially introducing the thermal energy into the fluidized bed chamber or discharging the thermal energy from the fluidized bed chamber, wherein the finely particulate charge material is heated or cooled in the region of the cyclone by the reduction gas above the fluidized bed in the fluidized bed chamber which gas has been at least partially reprocessed and had its temperature affected.