METHOD FOR DIRECT REDUCTION USING VENT GAS

• Main Author: MILLNER ROBERT
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2019
• 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; 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; RETORTS; WEAPONS

The application relates to a method for the direct reduction of feedstock, containing metal-oxide, to form metallic material, by contact with hot reduction gas in a reduction assembly (1), the productof the direct reduction process being discharged from the reduction assembly by means of a product discharge apparatus, which is flushed with seal gas, and being drawn off from the vent gas and subsequently dedusted. At least one portion of the dedusted vent gas is used as a combustion energy source during the production of the reduction gas, and/or as a component of a furnace fuel gas during a combustion process for heating the reduction gas, and/or as a component of the reduction gas. The application further relates to apparatus for carrying out the method. 本申请涉及用于通过在还原组件（1）中与热还原气体接触来直接还原包含金属氧化物的原料以形成含金属材料的方法，所述直接还原过程的产物借助于产物排放装置从所述还原组件排放，用密封气体来冲洗所述产物排放装置，并且从所述产物排放装置抽出通风气体并且随后通风气体被除尘。经除尘的所述通风气体的至少部分被用作在产生所述还原气体期间的燃烧能量源，和/或用作在用于加热所述还原气体的燃烧过程期间的炉燃料气体的成分，和/或用作所述还原气体的成分。本申请还涉及用于实施所述方法的装置。