PROCESS AND APPARATUS FOR TREATING A FINE PARTICULATE, IN PARTICULAR METAL-CONTAINING, CHARGE MATERIAL

• Main Authors: ZSCHETZSCHE, ALBERT, ZIRNGAST, JOHANN
• Format: Patent
• Language: English; French
• Published: 20.03.2012
• Subjects: BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; HEATING; KILNS; LIGHTING; MANUFACTURE OF IRON OR STEEL; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OPEN SINTERING OR LIKE APPARATUS; OVENS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; RETORTS; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

The invention relates to a process for treating a finely particulate, in particular metal-containing charge material, the charge material and a treatment gas, in particular a reduction gas, being introduced into a fluidized-bed chamber 1, for example into a fluidized-bed reactor, in order to form a fluidized bed. In this process, the treatment gas, after at least partial reaction in the fluidized bed 4, is discharged from the fluidized bed and then, outside the fluidized bed, is at least partially reprocessed, preferably oxidized, by an, in particular, exothermic, chemical reaction with a reactant, preferably with a gaseous and/or liquid oxidizing agent, the thermal energy of this reaction being at least partially introduced into the fluidized-bed chamber, in particular into the fluidized bed, or being discharged therefrom. The invention also relates to a unit for operating a fluidized bed.