METHOD AND SYSTEM FOR DIRECT REDUCTION OF IRON OXIDE AND USE THEREOF Russian patent published in 2025 - IPC C21B13/00 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to a method and a system for direct reduction of iron oxide, as well as to use of a system for direct reduction of iron oxide. By means of the method, preliminary reduction is carried out using a device for preliminary reduction and deep reduction using a device for deep reduction, in the preliminary reduction device, a reduction reaction is completed by stages Fe₂O₃→Fe₃O₄→Fe_xO, which is prone to flow during reduction of iron oxide into metallic iron. Product of preliminary reduction, which has reached a certain degree of reduction, and the residual coal are loaded together into a deep reduction device for a deep reduction reaction at the Fe_xO→Fe stage in the deep reduction device.

EFFECT: invention is aimed at achieving high efficiency of reducing iron oxide by controlling the degree of reduction at the stages of preliminary and deep reduction.

21 cl, 11 dwg, 50 ex