| 摘要 |
PURPOSE: An apparatus for preventing accumulation of ore flow in a fluidized-bed reduction furnace in the ingot iron manufacturing process using semi-soft coking coal and powder iron ore is provided to prevent accumulation of ore flow in a conduit through which iron ore flows by sensing the pressure peak when it is generated, thereby opening a branch line which can diverge a reduced gas to the side of exhaust gas. CONSTITUTION: The apparatus comprises first and second connecting pipes (2,3) connecting between first and second conduits (11,12) and an exhausting pipe (13) respectively; first and second opening and closing valves (4,5) opening and closing gas flowing through the first and second connecting pipes (2,3); first and second nitrogen purging conduits (6a,6b,7a,7b) connected to the front and back of the first and second opening and closing valves (4,5); first and second pressure gauges (8,9) installed at the end part of the first and second conduits (11,12) so as to sense the change of pressure applied to the first and second conduits (11,12), wherein each of the end parts of the first and second conduits (11,12) are adjacent to a prereduction furnace (C) and a final reduction furnace (D); a controller controlling the first and second opening and closing valves (4,5) based on the values sensed at the first and second pressure gauges (8,9).
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