Core drilled hole 24 inches in diameter drilled 36″ into a blast furnace that has been blown down for stack repairs.
Core removed from blast furnace hearth. The core is 24 inches in diameter and approximately 24″ in length. the core is degraded carbon impregnated with slag and iron
Core and Plug repair in progress. The fourth hole has been drilled in this course and is ready for insertion of the new plug. The plugs here are a combination of graphite and carbon
Core and plug repair in progress. The hole is 24 inches in diameter and 36 inches deep. It has been drilled into a Blast Furnace Taphole. The Blast Furnace has been banked, and the salamander has not been tapped. The refractory is being replaced through the existing hole in the shell.
Core and Plug repair in progress. 12 holes have been completed in a 21 hole repair. The plugs are all 24″ in diameter
Core and Plug repair in progress. The taphole refractory has been replaced with the shell off allowing for a greater width of repair.
Core and plug repair in progress. The refractory has been replaced from the outside with the core and plug technique. The refractory has been machined to provide the required expansion joint and pocket for the spool brick installation