Transactions of the INDIAN CERAMIC SOCIETY Vol. 34 1975
Modification in the Refractory Practice of Hot Blast Stoves
for Higher Hot Blast Temperature
B. RAMACHANDRAN AND N. S. MURDESHWAR
Pages : 13N-21N
DOI : 10.1080/0371750X.1975.10840596
Abstract
The refractories lining of the hot blast stoves of the blast furnace in Durgapur
Steel Plant was modified so as to obtain a hot blast temperature of 1000°C against
800°C as per original design. The modification was effected by using refractories
of 54% alumina quality for 15ft of the stove top, skin and combustion chamber walls;
40% alumina quality between 15 and 45ft from the top and 32-35% alumina quality
for· the rest. Only 50% of the total requirement of refractories for the stoves were
replaced during modification. The total cost for modification worked out to be about
60% of the total refractory material cost involved in the entire relining job. However,
the extra work involved due to modification did not affect the overall relining time.
No change in the stove chequer volume was called for in attaining higher blast
temperature of 1000°C.
