Corundum and Mullite Refractory Products

Corundum Bricks

 

Brand

Properties

WA99

WA98

WA97

WA95

WA93

WA90

Max service temperature (°C)

1850

1850

1800

1750

1700

1650

Al2O3% ≥

99

98

97

95

93

90

Fe2O3 ≤

0.15

0.2

0.3

0.4

0.5

0.8

Bulk density ≥ g/cm3

3.15

3.15

3.1

3.0

2.95

2.90

Apparent Porosity ≤%

20

20

20

20

20

20

Cold Crushing Strength MPa ≥

90

90

80

80

80

80

0.2MPa Refractoriness under load °C≥

1800

1800

1750

1700

1700

1600

Permanent linear change %

±0.1
(1700°C×2h)

±0.15
(1700°C×2h)

±0.2
(1700°C×2h)

±0.2
(1650°C×2h)

±0.3
(1650°C×2h)

±0.3
(1600°C×2h)

 
 

                            Raw material                                                                           Corundum Bricks

Mullite Bricks

 

Item

Properties

Mullite Bricks

Corundum

 Mullite

Corumdum-Mullite Bricks for Kiln furniture

Cordierite-mullite Bricks for kiln Furniture

 

SAS-70

FAS-70

 

 

 

Al2O3% ≥

70

70

85

85

45

SiO2 %≤

24

25

12.5

 

40-45

Fe2O3 %≤

1.0

0.5

0.5

1.0

1.4

R2O% ≤

1.5

0.5

 

 

 

Bulk Density ≥ g/cm3

2.55

2.58

 

2.85

1.8-2.2

Apparent Porosity ≤ %

17

16

 

15

30

Cold Crushing Strength Mpa ≥

45

80

85

110

40

0.2MPa Refractoriness under load °C≥

1650

700

1700

1700

1380

Permanent linear change %

±0.1
(1600°C×2h)

±0.1
(1650°C×2h)

 

±0.2
(1650°C×2h)

 

Cold Bending Strength Mpa ≥

15

20

 

15

8

High temperature Bending Strength Mpa ≥

8

12

11

12

8

Thermal shock Resistance (water cycle) (1100°C)≥

25

30

40

25

40

Thermal expansion coeffient (1000°C)

 

 

 

 

3.3


 

                          Raw material                                                        Corundum Mullite Bricks

CONTACT US

Company:HeNan JunSheng Refractories Limited
Address:1#,No. 2 of 14F WangDingGuoJi Plaza The west of Shangwu Waihuan Road South of JiuruDong Road CBD ZhengDong New District Zhengzhou
Tel: +86 0371 66726695
Fax:+86 0371 66726659
E-Mail:
zhang@jsrefractories.com