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Sintered Tabular alumina Refractory Castable

750.0 USD
Min. Order: 1 Ton
Trade Term: FOB,CFR,CIF,EXW
Payment Terms: L/C, T/T, WU
Supply Ability: 5000 ton/month
Place of Origin: Henan

Company Profile

Location: Zhengzhou, Henan, China (Mainland)
Business Type: Manufacturer

Product Detail

Model No.: 1-3mm 325mesh
Means of Transport: Ocean, Air, Land
Brand Name: Haixu
Product name: Sintered Tabular alumina
Key name: Sintered Tabular alumina
Color: White
Shape: Sand and fines
Mohs hardness: 9
sample: free
SiC content: 99% min
Standard: ISO
bulk density: 1.75-1.95g/cm3
Payment Term: T/T L/C
Production Capacity: 5000 ton/month
Packing: 25kg PVC bag+1MT big bag
Delivery Date: Shipped in 3 days after payment
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Product Description

Product Description


Tabular Alumina is high-density, fully shrunk, coarse crystalline alpha-alumina that has been converted to the corundum form. It is a completely crystallized α-alumina sintered at slightly below the melting point of imported alumina after batching, grinding, and molding.

Tabular Alumina is produced by sintering ball-formed alumina at a temperature under the 2040°C fusion point of aluminum oxide. The crystals are arranged in a tabular staggered way, which increases the mechanical strength of the particles.

Tabular alumina has characteristic large, well developed hexagonal tablet-shaped α-alumina crystals of up to 200μm length. 


Product Advantages

 

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

Product Index

 

Typical physical properties
Specific gravity3.96 g/cm3
Bulk density3.45-3.5g/cm3
 Apparent porosity2-5%
water absorption rate0.7-1.5%
Mohs' Hardness9.0
Knoop hardness2000kg/cm3
Thermal conductivity(100℃)0.069 cal/sec cm℃
Heat capacity(20℃)0.21cal/gm/(100℃)
Melting temperature2050℃
Max. service temperaturemin 1800℃
Refractive Index1.76
AppearanceWhite granules or powder
Chemical composition(%)
IndexAL2O3SiO2Fe2O3Na2O
Guarantee Valuemin 99.2max 0.18max 0.1max 0.4
Typical Value99.450.050.020.32
Key Physical Index
IndexBulk density(g/cm3)Porosity(%)Water absorption rate(%)
Guarantee Valuemin 3.5max 5.0max 1.5
Typical Value3.562.350.72

Particle Size Distribution:

Size:mmDistributionTypical Values %MAX/MIN %
5-10mm5-10mm9275
7-10mm5840
5-7mm3520
3-6mm3-6mm9890
4-6mm5540
3-4mm4420
1-3mm1-3mm9990
2-3mm5230
1-2mm4730
1-2mm+2.36mm810
-1mm510
0.5-1mm0.5-1.18mm9590
0.7-1.18mm4535
0.5-0.7mm5020
0.2-0.6mm+0.6mm510
-0.2mm410
0-0.5mm0-0.5mm9590
0.15-0.5mm4938
-200#+0.088mm0.33
-0.044mm9690
-325#-0.044mm9785
Available Sizes
Fraction0-30mm,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
Fine46mesh-0,60mesh-0,80mesh-0,100mesh-0,120mesh-0,150mesh-0,180mesh-0,200mesh-0,240mesh-0,270mesh-0
Customized size is available upon request

Product Applications:

 

Tabular Alumina is widely used in refractories including shaped & unshaped refractories, sliding gate, purging plug brick, nozzle, well block as well as kiln furniture, electronic industries, petrochemical industries, and ceramic industries. Tabular alumina is an ideal material for lining, ramming, aggregate, and castables in steel ladle. The usage of tabular alumina almost covers every step in steeling manufacturing.


 



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