Lining fireboxes in a high-pressure steam boiler

Conclusions The service conditions of the lining in high-pressure steam boilers with gas turbine blowing are characterized by a heating temperature above 1500–1550°C on the working surface and repeated sharp changes in temperature at rates of up to 100 deg/min during heating and up to 85 deg/min during cooling. In these conditions it is advisable to use silicon carbide refractories which are the most heat-resistant.The developed designs for the refractory linings to go into the fireboxes of high-pressure boilers have satisfactory heat-insulating properties. Owing to the combination of silicon carbide products with the ramming body, the choice of the most optimum product shape, and making them from silicon carbide with a complex oxynitride bond, such linings are very resistant and recommended for wide use.Translated from Ogneupory, No.2, pp. 18–23, February, 1970.