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Table 1 Chemical composition of the used materials

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

Oxide %

Clay

Calcined bauxite

SiO2

52.97

7.20

Al2O3

29.07

85.39

TiO2

1.48

4.08

Fe2O3

3.92

2.45

CaO

0.50

0.07

MgO

0.20

0.16

Na2O

0.06

0.02

K2O

0.28

0.27

SO3

0.76

LOI

10.62

Total

99.86

99.64