cast iron fabrication method, integrated steel fabrication method, cast iron fabrication equipment and integrated steel mill

摘要

"METAL MACHINE MANUFACTURING METHOD, INTEGRATED STEEL MANUFACTURING METHOD, CAST IRON MANUFACTURING EQUIPMENT". Cast iron manufacturing equipment is provided using directly or compacted fines and coal containing iron fines, a method thereof, a steel mill using the same, and a method thereof. The method of making cast iron comprises the steps of: making an iron-containing mixture by mixing ores containing iron fines and supplementary raw materials and drying the resulting mixture, converting the iron-containing mixture to a material reduced by reduction and sintering, while the iron-containing mixture passes through a multi-stage fluidized bed reaction unit, which are sequentially connected to each other, pelletizing by bundling the reduced material at high temperature, forming a packed coal bed by the charge of compacted coals. and pellets that are made by bundling coal fines into a gas-fuser as heat sources to melt the pellets, fabricate cast iron by loading pellets into the gas-fuser connected to a multi-fluidized bed reaction unit. -stage and supply oxygen into the fuser-gasifier and supply coal gas The reduction exhausted fuser-bed gasifier into the fluidized reaction multi-stage unit.