METHOD AND APPARATUS FOR DIRECT REDUCTION IRONMAKING

摘要

An apparatus for producing a reducing gas for direct reduction iron-making includes an internal-heating type reformer for reforming a natural gas by adding steam and oxygen to the natural gas and by partially burning the natural gas to generate reducing gas containing hydrogen and carbon monoxide; a remover for removing carbon dioxide from exhaust gas generated in the direct reduction iron-making; and a line for recycling as the reducing gas the exhaust gas from which the carbon dioxide is removed by the remover. A method for producing direct reduced iron from a raw material containing iron oxide includes the steps of reforming a natural gas by adding steam and oxygen to the natural gas and by partially burning the natural gas to generate a reducing gas containing hydrogen and carbon monoxide; reducing the raw material containing iron oxide by using the reducing gas to produce the direct reduced iron; removing carbon dioxide from exhaust gas generated in the reducing step; and recycling as the reducing gas the exhaust gas from which the carbon dioxide is removed in the removing step.