DIRECT REDUCTION PROCESS FOR IRON OXIDE-CONTAINING MATERIALS.

摘要

A direct reduction process is disclosed for iron oxide-containing materials. Synthesis gas is mixed with top gas produced during direct reduction of the iron oxide-containing materials and is used as reduction gas for directly reducing iron oxide-containing materials. In order to avoid or reduce metal dusting caused by an increased CO content of the reduction gas with a simple technique and equipment, the CO/CO2 ratio of the reduction gas is set at a predetermined value from 1 to 3. ratio of the reduction gas is set at a predetermined value from 1 to 3.