| 摘要 |
PROBLEM TO BE SOLVED: To provide a blast furnace operation method capable of adjusting a slag component stably regardless of fluctuation of molten iron temperature.SOLUTION: When a component composition of a blast furnace slag is adjusted according to fluctuation of molten iron temperature, slag basicity which changes by fluctuation of the molten iron temperature based on current slag basicity is estimated. The estimated slag basicity is a predicted slag basicity, and adjustment of the slag component is performed so that the predicted slag basicity reaches to target slag basicity. |
