| 摘要 |
PURPOSE:To enhance the efficiency of decarburization with injected oxygen, while reducing the diffusion of heat through the opening of a furnace to the smallest value, in the split-type refining furnace comprising upper and lower cells, by making the sectional area of the opening in the upper cell to a specified size. CONSTITUTION:In the split-type refining furnace comprising an upper cell 1 and a lower cell 2, wherein the upper and lower cells 1, 2 can be freely connected to and separated from each other, the sectional area of an opening 1A in the upper cell 1 is limited in a range of 0.002-0.03m<2> by ton of molten iron to be charged in the lower cell 2. Hence the sectional area of the opening 1A can be made without deteriorating the efficiency of decarburization with oxygen, and the amount of heat diffusing through the opening 1A can be suppressed to the lowest value. |
