| 摘要 |
PURPOSE:To uniformly and instantaneously repair whole inside furnace without using patching agent and coolant, by injecting inert gas from a lance to slag remaining in the furnace after tapping off the steel, cooling the slag and at the same time, spattering the slag in while inside of furnace. CONSTITUTION:The lance 22 is inserted in the furnace body 12 and O2 gas is blown through the lance 22 to execute blowing. And, after blowing, the lance 22 is pulled out of the furnace body 12, and by tilting the furnace body 12 to tapping off the steel. After that, the furnace body 12 is again returned back to the ordinary position and the lance 22 is inserted in the furnace body 12. Next, by injecting, the inert gas, such as N2 gas, against the remaining slag 24 in the furnace body 12 from the lance 22, the slag 24 is cooled and at the same time, it is scattered in whole inside of furnace as showing by the arrow mark. In this way, the slag 24 is stuck to the inside surface of furnace, that is furnace brick, and the repair of furnace body 12 is executed.
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