AIR HEATER OF BLAST FURNACE Russian patent published in 1996 - IPC

FIELD: ferrous metallurgy, namely structure of air heater of blast furnaces. SUBSTANCE: in order to increase efficiency of heating blast and reliability of air heater operation the air heater, including a casing, a doom, a combustion chamber and nozzles, cylindrical windows and unions, has a lining of a hot blast union in a zone of its joining with a lining of the combustion chamber being no bound with a main part of the union lining and having a form of lateral vertical pieces, connected on their upper and lower parts by semicylindrical arches. EFFECT: enhanced efficiency and reliability of air heater. 3 dwg