Transactions of the INDIAN CERAMIC SOCIETY Vol. 33 1974
Improving Roof Life of Open Hearth Furnaces
by Regular Cleaning
S. K. MIITRA, B. N. GHOSH, B. RAO AND K. S. SWAMINATHAN
Pages : 3N-7N
DOI : 10.1080/0371750X.1974.10840843
Abstract
Roof Cleaning is one of the means adopted by different steel plants throughout
the world for increasing the roof life of open hearth furnaces. With the adoption of
basic roof in TISCO, it was observed that the roof was getting over-heated and the tabs
holding the bricks were getting cut. This resulted in premature failure of roof requiring
frequent hot repairs. It was presumed that the dust accumulation in the roof was acting
as insulation altering the thermal gradient and enhancing the liquid migration deeper
in the brick.Laboratory investigation confirmed this assumption. In TISCO, roof cleaning
has been undertaken regularly to overcome this problem which has resulted in improving
the roof life considerably. The practice has been extended to the silica roof also with
considerable success.
