Remote Shotcreting Strategy for Repairing the Refractory of a Blast Furnace Dome
(Room 207D)
08 May 17
10:00 AM
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10:30 AM
Tracks:
Blast Furnace Stove Refractories & Operations I
Dome refractory repairs have traditionally required the blast furnace to be shut down for an extended outage. One North American operation adopted an alternative repair strategy. The main concept of the alternative approach was that all work would be controlled remotely from outside the furnace, so that repairs during a 16- to 24-hour outage became a viable option on furnaces with a chute change or gunite door. This paper discusses a broad range of subjects associated with development of the alternative repair strategy, including: outage preparation, burden considerations, shell cleaning, refractory installation and opportunities for further development. The initial attempt at repairing refractory in the blast furnace dome was overall positive; repair results using this remote technique substantiate this method.