| 摘要 |
PURPOSE:To easily and effectively treat waste gas by charging refining material in molten iron flow at near a flow-in part of groove-type furnace and also burning CO gas generated in the upper space in the furnace. CONSTITUTION:The molten raw iron 1 is introduced into the furnace covered by furnace construction 6 from the flow-in part 4, and flowed down. The refining material is charged in the molten iron flow from a nozzle 8, penetrating through the small opening hole 7 arranged in the furnace wall at near the flow-in part 4, to refine the molten iron. By refining reaction caused by charging the refining material, refining gas containing CO2 and slag are generated. The generated gas is mixed with oxygen-contained gas supplied from the large opening hole 10, and is burnt at the upper space in the furnace and sucked and exhausted from gas ducts 12, 15. Further, the slag is separated from the molten iron from a slag-port 17 at the flow-out part 14. In this way, the treating of the waste gas is easily executed and the refining is effectively carried out.
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