| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a material charge method to a blast furnace capable of precisely controlling size distribution of materials emitted from a lower bunker.SOLUTION: When putting a material 20 into an upper bunker 2, the material 20 is supplied over a first port 5 for forming a first deposit 21. By continuously supplying the materials 20 and letting the material falling from the first deposit 21 flow into a second port 6 which is different from the first port 5, a second deposit 22 is formed over the second port 6. A material 20b forming the first deposit 21 is transferred from the first port 5 to a lower bunker 3, and materials 20a and 20c forming the second deposit 22 are transferred from the second port 6 to the lower bunker 3, for depositing the material 20 on the lower bunker 3. Then the deposited material in the lower bunker 3 is charged into a blast furnace 12.</p> |
