Investigations on the Influence type of alumina solid state reaction of alumina and maganesia in bauxite-based refractory castables

In the present study, Investigations on the compressive strength of refractory castable and presents a comparison on the influence of five different types of alumina (Al2O3) on the mechanical strength were reported here. For this purpose, the influence of five types alumina on solid state reaction of alumina and magnesia in bauxite-based refractory castables on compressive strength were investigated. The results show that, the most effective material for the improving compressive strength is alumina reactive. Optimizing Content for maximum compressive strength were obtained at 4% reactive alumina. X-ray diffraction (XRD) analysis proved that all the samples consist of in situ spinel phase. The reactive alumina content was found to be the most influencing factor on in situ spinel formation.

Keywords:

Alumina , Refractory , compressive strength , solid state reaction