Hot blast stove and method of operation

Details Hot blast stove and method of operation Hot blast stove and method of operation

1977-02-10

1979-03-20

Lake, Roy

Metallurgical apparatus

Process

432216, 432217, C21B 908

Patent

active

041450337

ABSTRACT:
Intercrystalline stress corrosion of the walls of heat exchangers employed to produce hot air for injection into a blast furnace, particularly the wall of the passage interconnecting the combustion and heat exchange chambers, is avoided by eliminating pressure differentials across the walls. Also, the walls of the heat exchanger are heated to a temperature above the condensation point of deleterious vapors present or formed in the apparatus to thereby further minimize the possibility of occurrence of stress corrosion.

REFERENCES:
patent: 692678 (1902-02-01), Koelkebeck
patent: 1895235 (1933-01-01), Simon
patent: 3902844 (1975-09-01), Higashi

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