Fused Alumina-Magnesia Spinel
Colour: White to Grey
Chemical formula: MgAl2O4
Specific Gravity: 3.55 g/cm3
Mohs Hardness: 7.5-8
Melting point: 2,135°C
Grades: AM-90 , AM-85, AM-70, AM-65
For refractory: 0-1mm, 1-2mm, 1-3mm, 3-5mm…-200mesh, -325mesh.
*Custom Sizes & Chemistry are available upon request.
DESCRIPTION
Fused Alumina-Magnesia Spinel is produced from high purity powdered magnesium and alumina powder through large-scale electric arc furnace at high temperature. It is characterized by its large crystals, high density, good appearance and color, excellent corrosion resistance, good thermal shock resistance and good hot strength.
DATA SHEET
Physical properties:
Colour: White to Grey
Chemical Formula: MgAl2O4
Melting Point: 2,135°C
Hardness: Mohs 7.5-8
Refractoriness: 1900°C
Specific Gravity: 3.55 g/cm³
Apparent Porosity: 3 %
Water Absorption: 1 %
Chemical Compostion:
We offer four types Fused Spinel with different levels of Al2O3 content as follows:
|
Types |
AL2O3(%) |
MgO(%) |
CaO(%) |
SiO2(%) |
Fe2O3(%) |
Na2O |
Bulk Density (g/cm³) |
|
SP-AM65 |
63 – 68 |
31 – 36 |
≤0.70 |
≤0.40 |
≤0.40 |
≤0.40 |
≥3.3 |
|
SP-AM70 |
72– 76 |
22 – 27 |
≤0.60 |
≤0.30 |
≤0.30 |
≤0.40 |
≥3.4 |
|
SP-AM85 |
82 – 87 |
12 – 17 |
≤0.50 |
≤0.15 |
≤0.15 |
≤0.40 |
≥3.5 |
|
SP-AM90 |
88 – 92 |
8 – 12 |
≤0.40 |
≤0.10 |
≤0.10 |
≤0.30 |
≥3.5 |
*Custom Chemistry is available upon request.
AVAILABLE GRIT SIZES
For Refractories Application:
Macro sizes: 0-1mm, 0.5-1 mm, 1-3mm, 3-5mm, 5-8mm, 0-10mm, 0-25mm...
Fine powder:
0-0.1mm, 0-0.2 mm, 0-0.5mm, 0.1-0.5mm, 0.2-0.5mm
-200mesh, -325mesh..
Noted: Custom sizes and shaped are also available upon request.
PACKAGING
Standard Packaging:
- Big bags (1000kgs, 1250kgs, 1350kgs) with or without pallets;
- 20 or 25kg plastic, or paper bags, with or without pallets.
*Custom Packaging is available upon request.
APPLICATION
-It is widely used for refractory products applications, such as electric arc furnace roofs, converter and ladle, large cement rotary kiln; refractory lining of high frequency furnaces, and various kinds of torpedo ladles and other ladles used in the steel industry.
-Making high grade magnesia-alumina bricks, magnesia-alumina castable, sliding nozzles, lining bricks for ladle, slide plates, nozzle blocks and roof bricks.
YOUR INQUIRY
If you have any questions ,Please feel free to contact us.