• Yangzhuang Industrial Zone, Zhenwu Town, Jiangdu District, Yangzhou, Jiangsu Province, P.R. China
  • 86-(0)514-86236087
  • iris.pan@jsjxgf.com

Sintered magnesium aluminate spinel

Short Description:

Sintered magnesium aluminate spinel is made by using imported industrial alumina and high puritu caustic magnesia as starting materials, through multi-stage homogenization process, and sintered at ultra high temperature in shaft kiln. The product has characters of high bulk density, high level of spinel phase, well developed crystal, uniform microstructure and consistent properties.

As ideal raw material for refractory products as bricks and castables for ladle lining, cement rotary kiln and glass furnace, they contribute to good resistances to slag attack, spalling, and thermal shock. There are varieties of JMA-50, JMA-66, JMA-78 and JMA-90 available according to their alumina content.

Size availability:

Different sizes from 15mm to under 2μm can be provided. 

Product package:

25kg/bag, 1000kg/bag or other specific  packages as per users’ requirements are available.


Product Detail

Product Tags

Data sheet of JMA-50sintered spinel

 

Specification

Typical value

  

% Chemical composition

Al2O3

48-52

50.53

MgO

46-50

48.12

CaO

≤0.60

0.46

SiO2

≤0.45

0.32

Na2O

≤0.25

0.22

Fe2O3

≤0.30

0.22

Fe, %

Magnetic Fe

 

≤0.02

 

0.01

g/cm³

Bulk density

 

≥3.30

 

3.32

%

Apparent porosity

 

≤3.00

 

2.18

%

Water absorption

 

≤1.00

 

0.70

Data sheet of JMA-66 sintered spinel

 

Specification

Typical value

  

% Chemical composition

Al2O3

64-67

65.36

MgO

32-35

33.45

CaO

≤0.50

0.36

SiO2

≤0.30

0.25

Na2O

≤0.20

0.17

Fe2O3

≤0.28

0.21

g/cm³

Bulk Density

 

≥3.20

 

3.26

%

Apparent porosity

 

≤3.00

 

2.09

%

Water absorption

 

≤0.80

 

0.68

 Data sheet of JMA-78 sintered spinel

 

Specification

Typical value

 

% Chemical composition

Al2O3

76-79

77.16

MgO

20-23

21.57

CaO

≤0.40

0.35

SiO2

≤0.35

0.29

Na2O

≤0.30

0.25

Fe2O3

≤0.25

0.18

g/cm³

Bulk density

 

≥3.25

 

3.26

%

Apparent porosity

 

≤3.00

 

2.83

%

Water absorption

 

≤1.00

 

0.95

Data sheet of JMA-90 spinel

 

Specification

Typical value

   

% Chemical composition

Al2O3

89-92

89.76

MgO

8-11

9.32

CaO

≤0.25

0.18

SiO2

≤0.25

0.21

Na2O

≤0.35

0.29

Fe2O3

≤0.15

0.09

Fe, %

Magnetic Fe

 

≤0.02

 

0.01

g/cm³

Bulk density

 

≥3.30

 

3.35

%

Apparent porosity

 

≤3.00

 

2.35

%

Water absorption

 

≤1.00

 

0.92


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