Refractory DivisionProduct & ServicesFerrous ► Monolithic Roof For EAF DELTA/VD/VAD  
 
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Monolithic Roof For EAF/DELTA/VD/VAD
Al2O3-Cr2O3 based castables has emerged as a suitable alternative for roof application

 
Al2O3-Cr2O3 based castables has emerged as a suitable alternative for roof application and addressed some of the operational severity and led to significant improvement of roof life. Its unique characteristics have improved the reliability of roof and increase furnace availability.

The following properties become active in this material during operation
Monolithic structure prevents undue expansion/contraction thus improving stability of the roof structure
Lower permeability of castable structure restricts penetration of gases at high temperature
Coarse texture and dense matrix gives higher abrasion resistance
The Al2O3-Cr2O3 solid solution in the matrix imparts superior corrosion to slag ingress and restricts structural spalling
The controlled grain size distribution enhances thermal spalling at high meltdown temperature. The precast shape gives high strength and stability to the structure during up, down and swings of the roof
OCL offers the following
EXCELCAST 80CR
ULTRACAST 90CR
 
    
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