Effect of different binders on High Alumina Self Flow Castable

Abstract

Effect of binder and its amount on the high alumina self flow castable has been studied. Self flow castable has been prepared fixing the distribution coefficient q at 0.21, in the continuous particle size distribution model as proposed by Dinger-Funk. High alumina cement and silica sol were used at 4wt% and 6 wt% as binder and water is used till self flowing consistency was achieved in the castable mix. The Castable cubes were prepared as per conventional processing and heat treatment was done at 950oC and 1550oC. All the dried and heat treated samples were characterized for bulk density, volume shrinkage and cold crushing strength. The matrix phase of the 6% binder containing samples were tested for phase analysis using X-ray Powder Diffraction (XRD) technique, which showed mullite phase in sol containing castable and grossite in cement containing one.