| Refractory linings in various metallurgical units undergo considerable
fluctuations in temperatures for long periods, which cause changes in
mechanical stresses in the lining and affect the life of the same considerably.
The existing conventional methods for the investigation of refractories
do not reflect actual operational conditions in metallurgical
units. Forecasting of refractory lining life can be carried out by
investigating refractories fatigue. With this aim in view, a procedure
was developed for conducting fatigue investigations of refractories
at a pulsating compressive cycle. Trials were conducted under a
wide range of temperatures, i.e. from room temperature up to 1500°C.
Fatigue tests of refractories made it possible to establish conditions
of their durability and methods of improvement in metallurgical
units. |
