Tabular Alumina For Kiln Furniture

Tabular Alumina sand and powder are suitable for Kiln furniture and Ladle Construction.
With the continuous development of refining technology outside the furnace, the use environment of refractory materials in ladle is becoming more and more demanding. The molten steel needs to stay longer in the ladle for stirring, heating, and erosion of different steel slags. The single material (such as magnesium or aluminum) of the ladle lining has been replaced by composite materials. The aluminum-magnesium spinel castables made from sintered tabular corundum and spinel is more used for the bottom or wall of the cladding as linings.

$800.00 – $2,000.00 / MT

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Properties:

  1. Complete crystallization, High purity up to 99.5% Al2O3
  2. Low apparent porosity Less than 5%
  3. Good resistance to alkalis and mineral acids
  4. Low water absorption less than 1%
  5. High hardness and toughness
  6. High thermal conductivity
  7. Excellent thermal shock resistance
  8. Good abrasion resistance.
  9. High volume stability
  10. High anti-bending strength

Applications:

Ladle lining

Ramming

Aggregate and Castables.

 Technical data:

Typical physical properties

Specific gravity

3.96 g/cm3

Bulk density

3.45-3.5g/cm3

 Apparent porosity

2-5%

water absorption rate

0.7-1.5%

Mohs’ Hardness

9.0

Knoop hardness

2000kg/cm3

Thermal conductivity

(100℃)0.069 cal/sec cm℃

Heat capacity

(20℃)0.21cal/gm/(100℃)

Melting temperature

2050℃

Max. service temperature

min 1800℃

Refractive Index

1.76

Appearance

White granules or powder

Chemical composition（%）

Index

AL2O3

SiO2

Fe2O3

Na2O

Guarantee Value

min 99.2

max 0.18

max 0.1

max 0.4

Typical Value

99.45

0.05

0.02

0.32

Key Physical Index

Index

Bulk density(g/cm3)

Porosity(%)

Water absorption rate(%)

Guarantee Value

min 3.5

max 5.0

max 1.5

Typical Value

3.56

2.35

0.72

Granule Specification (mm) : 

Fraction

0-30mm,30-10mm,12-6mm,10-8mm,8-5mm,5-3mm,3-1mm,2-1mm,1-0mm,1-0.5mm,0.5-0.2mm,0.5-0mm,0.3-0mm

Fine

46mesh-0,60mesh-0,80mesh-0,100mesh-0,120mesh-0,150mesh-0,180mesh-0,200mesh-0,240mesh-0,270mesh-0

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