| Import Substitution and Improved Performance of
Aluminous Refractories in Continuous Reheating
Furnaces of Durgapur Steel Plant |
A. BASIT, A. K. DASGUPTA AND 0. P. SANDHIR
Pages : 63-65
DOI : 10.1080/0371750X.1981.10822522 |
| Abstract |
| Uninterrupted service of continuous reheating furnaces is essential for
augmenting finished steel production. The furnace availability is
affected due to fast wearing of refractories in certain vital locations,
and the maintenance costs rise sharply due to frequent shut-down for
repairing/replacing the damaged brick-work.
Since the inception of Durgapur Steel Plant, the ejector-axis
hearths or effective hearths of both billet and slab reheating furnaces
(working temperature 1270°C ±20°C) were lined with imported aluminous
bricks (AI20 3 83-86 %), but the performance was not satisfactory.
Trials had been conducted in 1974 and 1975 by employing
aluminous bricks (AI20 3 88% min) from an indigenous source and
the same has now successfully replaced import. Further, the life of
ejector-axis hearth has doubled from what was obtained with the use
of imported bricks. Apart from import substitution, the use of this
indigenous brick simultaneously increased the availability of reheating
furnaces for rolling. |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
|
