| 摘要 |
PROBLEM TO BE SOLVED: To reduce the amount of production of greenhouse gas by effectively using carbonaceous materials originating from biomass which is carbon-neutral as a heat source and a recarburizer in place of carbonaceous materials originating from fossil fuel such as coke and coal, etc., when producing high-carbon molten iron by using iron scrap.SOLUTION: In the method for producing high-carbon molten iron, iron scrap 14 and molten iron 12 are charged into a refining furnace 2 as iron sources, oxygen gas is then supplied into the refining furnace, the iron scrap in the refining furnace is melted by combustion heat by the oxygen gas of carbonaceous materials 15 supplied into the refining furnace and sensible heat of the molten iron, the iron scrap is recarburized by the carbonaceous material and the molten iron, and high-carbon molten iron having the carbon concentration of ≥3.0 mass% is produced in the refining furnace. Carbonaceous materials originating from biomass are used for a part of or the entire carbonaceous materials, and the amount of production of greenhouse gas is reduced thereby. |
