Patent ID: 8845779
Filing Date: 2014-09-30
Classification: C10J,C21B,C21C,Y02P

Abstract:
1. A process for producing molten iron comprising the steps of: (1) supplying carbon-containing molten iron to a holding container, (2) heating the molten iron using heat of a combustion reaction of a gas mixture containing a fuel gas and a combustion-supporting gas, thereby storing the heat, wherein the fuel gas contained in the gas mixture is in an amount that exceeds that of the fuel gas in the perfect combustion ratio of the gas mixture, and (3) adding a carbon source and an iron-containing material that contains iron oxide and/or scrap iron to the heated and heat-stored molten iron, thereby converting the iron-containing material to molten iron, wherein the amount of carbon in the molten iron obtained is 3 to 4.5 wt %.