| Development of Aluminium Oxychloride Bonded Fused
Magnesia Based Basic Refractory Castable |
B. K. Sanfui and T. K. Parya*
pages: 165-171
DOI : 10.1080/0371750X.2014.922432 |
| Abstract |
| The exclusive demand for super quality basic refractory castable in the lining of steel making furnaces for the
manufacture of inclusion free steel has posed a real challenge towards its innovative development. The present
study demonstrated the formation of a new generation cementless basic refractory castable using Al-oxychloride
as non-conventional binder and fused magnesia as aggregate. The basic castable body showed a distinct
improvement in thermomechanical properties and dense advance matrix microstructure at low, intermediate as
well as high temperature. The powder XRD pattern of fused magnesia based basic castable on sintering at 1500oC
revealed the existence of well crystalline periclase as major along with magnesium aluminate as minor crystalline
phases. The SEM images of cement free basic castable on sintering at 1500oC exhibited an advance matrix
microstructure with uniform distribution of normal size periclase grains surrounded by MgAl2O4 and Al2O3 layers at
the grain boundaries with occasional presence of micro porosity. |
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