MOLTEN IRON PRODUCTION APPARATUS AND MOLTEN IRON PRODUCING METHOD USING SAME

摘要

The present invention relates to a molten iron production apparatus and a molten iron producing method using the same, comprising: a raw material pre-treatment unit for selecting and pre-treating an iron ore material suitable for reduction; a preliminary reduction reactor having a first rising tube for transferring the pre-treated iron ore material from the raw material pre-treatment unit, and a second rising tube connected to the first rising tube, so as to preliminarily reduce the transferred iron ore material by a reduction gas; a reduction reactor for reducing the partially reduced iron transferred from the preliminary reduction reactor; a molten reduction reactor for producing molten iron by molting and reducing the partially reduced iron obtained from the reduction reactor using the reduction gas; a pre-treatment unit for a by-product gas from an iron-and-steel making process which generates the reduction gas by mixing and reforming the by-product gas from the iron-and-steel making process or carbon dioxide generated from an iron ore reduction process, and supplies the generated reduction gas to the molten reduction reactor or the preliminary reduction reactor; and an iron ore reduction process unit for supplying the carbon dioxide generated from the iron ore reduction process.