METHOD FOR RECYCLING IRON-CONTAINING BY-PRODUCTS DISCHARGED FROM COAL-BASED MOLTEN IRONMAKING PROCESS, SYSTEM THEREFOR, AND REDUCED IRON AGGLOMERATION SYSTEM

摘要

There is provided a method and system for recycling by-products containing large amounts of useful components and discharged in the form of dust and sludge from a coal-based molten iron making process to reuse the by-products in a reduced iron agglomeration process. The system includes: a fluidized reduction furnace reducing fine iron ore; a reduced iron tank connected to the fluidized reduction furnace through a reduced iron discharge pipe for storing the reduced iron and supplying the reduced iron in an agglomeration system; an agglomeration system agglomerating the reduced iron transferred from the reduced iron tank; and a transfer unit transferring compactions of by-products discharged from a molten iron making process through a by-product supply pipe. The compactions of the by-products are supplied to at least one selected from the group consisting of the fluidized reduction furnace, the reduced iron supply pipe, and the reduced iron tank.

主权项

1. A method for recycling iron-containing by-products discharged from a molten iron making process in the form of dust and sludge containing moisture, the method comprising:
agglomerating the by-products discharged from the molten iron making process to form by-product compactions; and forming reduced iron compactions by mixing reduced iron with the by-product compactions and agglomerating the reduced iron mixed with the by-product compactions.