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Table 4 Properties of high alumina batch fired at 1350 °C

From: Technological properties of high alumina refractories with different phosphoric acid contents

Phosphoric acid % Bulk density
g/cm3
Apparent porosity % Linear shrinkage % Thermal shock resistance
No. of cycles
Cold crushing strength
kg/cm2
3% 2.48 17.79 + 0.07 > 30 1122
5% 2.55 18.51 0.18 > 30 806
7% 2.49 21.65 0.17 > 30 665