METHOD FOR PRODUCING METALLIC IRON

摘要

A technique capable of producing metal iron high in metallization and iron purity with high yield and efficiency by minimizing a metal iron re-oxidizin g problem encountered at the end of solid reduction when producing metal iron by heating/reducing material substances including an iron-oxide-containing substance and a carbonaceous reducing agent. A method of producing metal iro n by heating material substances including an iron-oxide-containing substance and a carbonaceous reducing agent in a moving hearth type reducing/melting furnace, and reducing/melting the iron oxide in the material substances, wherein the reducing/melting furnace is partitioned into at least three sections in the moving direction of the hearth - namely, a solid reducing section on the upstream side in the hearth moving direction, a carburizing/melting section on the downstream side, and a reducing/aging section between the solid reducing section and the carburizing/melting secti on.