Reduce maintenance downtime for BOF tap hole sleeve replacement.
Wilbartec refined the concept of drilling out worn refractory sleeves, inserting the new sleeve, and securing it into position via injection of heat curing grout. The entire process performed by a fully maneuverable machine, operating via radio control, on a vessel operating at 1500•C.
The new equipment replaces a manual method, reduces sleeve replacement times of 2-4 hrs down to 40 minutes, and achieves a sleeve change of higher quality and accuracy than the previous method. The client says: “ … Based on improving the taphole security and taphole exchange time, the overall two furnace availability for the steelmaking plant has increased by 5%. This is a very significant improvement … “ “The new system has indeed provided Onesteel with an improved cost position based on: • increasing furnace availability during single furnace operations • reduced refractory consumption • reduced furnace downtime associated with taphole repairs • eliminates the potential for damage to the seating block • reduced the potential for steel penetration and uncontrolled taphole breakouts. “