| 摘要 |
PURPOSE:To remarkably reduce number of stages for fitting stave and further to reduce number of blast stoppings and blast stopping time by reforming stave body, so as to take the stave in the furnace by using a tube seat for exchanging existing armor plate. CONSTITUTION:The stave body 6 taken in the furnace is placed to the furnace wall repairing part and a supporting tube connecting metal 11 is inserted into the furnace wall opening part, having larger diameter than that of the connecting metal 11 beforehand formed on the furnace wall, from outside of the furnace. And, an expansion joint 12 for connecting cooling pipe 13 is expanded and the cooling pipe is joined with the tip thereof. Next, in the inner face of connecting metal 11, the stave supporting tube 14 is screwed and after joining the tip part of supporting tube 14 with the pipe 13 through a blind patch 15, the supporting tube 14 is welded to the iron shell 1 by using a seal metal 9. In this way, an opening part for taking the stave in as the conventional method is not necessary to newly arrange. Further, as this method has the above- mentioned merit, on the repairing work of furnace wall is executed, with the least effect on blast furnace operation.
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