Silica Sol Bonded High Alumina Castable: Effect of Reduced Sol

Birendra Prasad1, Ritwik Sarkar2, Arun Kumar2, Sarada Prasanna Das3

1 OCL Refractory Ltd., Rajgangpur, Odisha – 770017/India
2 National Institute of Technology, Rourkela Odisha – 769008/India
3 OCL Refractory Ltd., Rajgangpur, Odisha – 770017/India


Volume 7, Issue 2, Pages 83 - 87


Effect of reduction in sol content in no cement high alumina castable using water as partial replacement was studied. Different castable compositions, with different particles size distributions, were prepared and processed as per conventional castable making method. Pure silica sol and fixed amount of sol and rest water, as required for mixing and flowability, were added as bond material in the castables. Comparison in characteristics amongst the castables was done after heat treatment at different temperatures.


alumina castable, silica sol, water, processing, characterization


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