An Electric Furnace used for steelmaking consists of a refractory-lined vessel, usuaslly water-cooled in larger sizes, covered with a Refractory Roof, and through which one or more graphite electrodes enter the furnace.
MAHAKOSHAL EAF ROOF COVER delta section is a pre-cast monolithic high alumina refractory roof for use in Electric Arc Furnaces.
The MAHAKOSHAL delta section replaces the formerly bricked construction. When assembled, the roof is first gently dried before use.
MAHAKOSHAL delta roof is supplied in pre-cast individual pieces. They are of a monolithic construction and are assembled into a water-cooled delta frame to form a complete furnace roof. A High Alumina Refractory Castable is used to seal the 3 sections together.
Traditionally Electric Arc Furnace roofs were constructed of refractory bricks. The lifetime of a MAHAKOSHAL delta roof depends on the individual furnace and steel-making practice, but can be expected to be in the order of 2 to 3 times longer than bricked roofs under the same conditions
Mahakoshal EAF Roof Cover
PRECAST BLOCK FOR DELTA PORTION – ULCC 90
- 3- section construction provides ease of handling.
- After assembly the roof becomes a single unit for maximum strength.
- Assembly is quick and easy.
- Time between refining is significantly extended.