Anlage zur Eisenerzreduktion in circulierenden Wirbelschicht

• Main Authors: DELEBARRE, ARNAUD, F-57000 METZ, FR, DE LASSAT, YANN, F-57070 METZ, FR, RIBOUD, PAUL VICTOR, F-57000 METZ, FR
• Format: Patent
• Language: German
• Published: 04.09.1997
• Edition: 6
• Subjects: BLASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; 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; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; RETORTS; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

Plant for reduction of iron ore, comprising a first reactor (1) containing a bed of iron ore in the course of reduction, means for fluidising and circulating the said ore, a device for injecting reducing gases in the base of the said first reactor, means for extracting the said ore in the course of reduction from the said first reactor (1), a cyclone (6) ensuring separation between the reducing gases and the said ore in the course of reduction, characterised in that it also comprises, downstream of the said cyclone (6) in the path of the said ore in the course of reduction, a fluidisation zone (7) and a conduit (24) conducting the said gases and the said ore inside the said first reactor. It also comprises a gasification reactor (14) provided with means (15, 16, 17, 19) for injecting carbonaceous materials (18) and oxygen producing a reducing gas, the said gasification reactor (14) not being in the path of the ores in the course of reduction, and means (9, 10) for mixing fresh iron ore with the said ore in the course of reduction.