IRON RECOVERY

• Main Authors: BECERRA NOVOA, Jorge Octavio, BEACHY HEAD, John Peter
• Format: Patent
• Language: English; French
• Published: 08.06.2023
• Subjects: BLASTING; CHEMISTRY; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; 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

The invention provides a method of reducing ferrous metal fines derived from waste or from ferrous ore, including feeding a fine ferrous material with a particle size distribution of between 10 microns to less than 6 mm and a reductant into an indirectly heated vibratory bed furnace, and contacting the fine ferrous material with the reductant in the indirectly heated vibratory bed furnace at a temperature of up to 1350°C to produce a hot direct reduced ferrous metal. L'invention concerne un procédé de réduction de particules fines de métal ferreux issues de déchets ou de minerai ferreux, comprenant l'alimentation d'un matériau ferreux fin possédant une distribution granulométrique comprise entre 10 microns et moins de 6 mm et un agent réducteur dans un four à lit vibrant chauffé indirectement, ainsi que la mise en contact du matériau ferreux fin avec l'agent réducteur dans le four à lit vibrant chauffé indirectement à une température allant jusqu'à 1 350 °C pour produire un métal ferreux réduit direct à chaud.