Washing the hearth of blast furnaces with briquets made from scale

A comparative analysis made of the use of washing sinter and scale briquets to wash the hearth of blast furnaces showed that similar results are obtained in both cases. Scale briquets with a cement binder can be effectively used as a washing material for blast furnaces, which will make it possible to end the production of washing sinter, increase the productivity of sinter plants, and improve the quality of the sinter they produce. __________ Translated from Metallurg, No. 6, pp. 36–39, June, 2007.     

Diagnostics of the air-heater casings in blast furnaces

A diagnostic method for air heaters in blast furnaces is described. The method involves magnetic and ultrasonic monitoring, thermometry, and metallographic analysis without the removal of samples. Monitoring data for several air heaters are presented. The benefits of nondestructive monitoring methods are demonstrated. Such methods extend air-heater life and also prevent emergency shutdowns.     

Increasing the service life of shafts of blast furnaces

Translated from Metallurg, Vol. 39, No. 10, p. 21, October, 1995.