METHOD FOR MANUFACTURING MOLTEN IRON

Provided is a method for manufacturing molten iron, wherein an iron-containing by-product is blown into a melting gasification furnace through a tuyere. A method for manufacturing molten iron comprises: i) a step for providing an iron-containing by-product that includes a slurry; ii) a step for introducing a lump carbonaceous material and a reducing iron into a melting gasification furnace; iii) a step for crushing the iron-containing by-product together with a fine carbonaceous material to provide a mixture to be blown through the tuyere, the mixture having a moisture content greater than 0 wt% and no greater than 2 wt%; iv) a step for blowing through the tuyere installed in the melting gasification furnace and into the melting gasification furnace, oxygen and the mixture to be blown through the tuyere; and v) a step for manufacturing molten steel in the melting gasification furnace. In the step for providing the mixture to be blown through the tuyere, the average particle diameter of the mixture to be blown through the tuyere is greater than 0 µm and no greater than 50 µm.