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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