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Table 3 Composition of the designed high alumina batch

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

Oxide % 20 g clay 80 g calcined bauxite High alumina
> 72% Al2O3
On calcined calculation
SiO2 10.59 5.76 16.35 16.76
Al2O3 5.81 68.31 74.12 75.97
TiO2 0.29 3.26 3.55 3.64
Fe2O3 0.78 1.96 2.74 2.81
CaO 0.10 0.06 0.16 0.16
MgO 0.04 0.13 0.17 0.17
Na2O 0.01 0.02 0.03 0.03
K2O 0.06 0.22 0.28 0.29
SO3 0.15 0.15 0.15
LOI 2.12 2.12
Total 19.97 79.712 99.67 99.98