Sintered Tabular Alumina Powder 325mesh

Model:	-200#，-325#
Brand:	HAIXU
Origin:	-
Category:	Metallurgy , Mining & Energy / Metallurgy & Mining / Non-metallic Mineral Products
Label:	Tabular Alumina , Sintered Tabular Alu , Tabular Alumina Powd
Price:	US $750 / pc
Min. Order:	1 pc

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Product Description

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.

Properties:

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

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

Particle Size Distribution

Size:mm	Distribution	Typical Values %	MAX/MIN %
5-10mm	5-10mm	92	75
	7-10mm	58	40
	5-7mm	35	20
3-6mm	3-6mm	98	90
	4-6mm	55	40
	3-4mm	44	20
1-3mm	1-3mm	99	90
	2-3mm	52	30
	1-2mm	47	30
1-2mm	+2.36mm	8	10
1-2mm	-1mm	5	10
0.5-1mm	0.5-1.18mm	95	90
	0.7-1.18mm	45	35
	0.5-0.7mm	50	20
0.2-0.6mm	+0.6mm	5	10
0.2-0.6mm	-0.2mm	4	10
0-0.5mm	0-0.5mm	95	90
0-0.5mm	0.15-0.5mm	49	38
-200#	+0.088mm	0.3	3
-200#	-0.044mm	96	90
-325#	-0.044mm	97	85

Available Sizes

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
Customized size is available upon request

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 ideal material for lining，ramming，aggregate and castables in steel ladle. The usage of tabular alumina almost covers every step in steeling manufacturing.