China White Fused Alumina for Refractories factory and suppliers

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White Fused Alumina for Refractories

White fused alumina is a high-grade refractory raw material, made of high-quality industrial alumina powder after being melted at a high temperature above 2200℃ in an electric tilting furnace and then cooled. Its main crystal phase is α-Al2O3, and the color is white.

It is the main raw material for the production of high-grade unshaped and shaped refractories,it’s widely used in variety industries.

Features

1.High refractoriness

2.Good wear resistance and corrosion resistance

3.High load temperature when making products

4.Improve the volume stability and thermal shock resistance of materials.

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Product Detail

Product Tags

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Grit and Fine Powder

0-0.1mm 0-0.2mm 0-0.5mm 0-1mm 0.5-1mm 1-3mm 3-5mm 5-8mm, 5-10mm, 10-25mm, 100mesh 200mesh 325mesh ...

Other spec are available upon request. Low sodium, Micro sodium WFA are both available.

Product Advantages

1. Low sodium and micro sodium WFA can be provided. Na₂O can be double 0.
2. Bulk density can really reach 3.6 g/cm3, which can meet needs of various high-grade refractory materials.
3. YUFA spends 24hours non-stopping melting the WFA, using a tilting furnace with a diameter of 6.5m in order to pursue the high-grade and stable quality.
4. Various specifications can be supported.

Applications

MONOLITHIC REFRACTORIES

Ideal materials for the production of large-scale ladle casting materials, high-grade iron trench casting materials, spraying materials, prefabricated parts and other unshaped refractory materials.

SHAPED REFRACTORIES

Corundum bricks, corundum and mullite corundum saggers, refining. The main raw material of various corundum products is corundum porous plug brick, integral spray gun, composite nozzle, high-temperature industrial furnace lining material etc.

1. White corundum powder is widely used in steel, cement, ceramics, petroleum and other industries.

2. It is an ideal raw material for making large-scale ladle castables, medium and high-grade iron trough castables, gunning materials, preforms and other unshaped refractory materials.

3. It is also the main raw material for various corundum products such as corundum bricks, corundum and mullite corundum saggers, corundum porous plugs for refining, integral spray guns and composite nozzles, and high-temperature industrial furnace lining materials.

Chemical Composition

Chemical Composition	Grit > 0.1mm	Typical Value	Fine Powder ≤ 0.1mm	Typical Value
Al₂O₃%≥	99.2	99.5	99	99.3
SiO₂%≤	0.1	0.03	0.15	0.08
Fe₂O₃%≤	0.1	0.03	0.1	0.06
K₂O+Na₂O%≤	0.35	0.25	0.4	0.3
Apparent Porosity %≤	8	6
Common Bulk Density g/cm³≥	3.6	3.65
High Bulk Density g/cm³≥	3.68	3.72
True Density g/cm³≥	3.9	3.93	3.9	3.93

Chemical Composition Of Low Sodium, Micro Sodium White Fused Alumina

Chemical Composition	Low Sodium		Micro Sodium
Chemical Composition	Guarantee Value	Typical Value	Guarantee Value	Typical Value
Na₂O % ≤	0.15	0.08	0.08	0.02
Al₂O₃% ≥	99.4	99.7	99.6	99.8
SiO₂% ≤	0.1	0.05	0.1	0.05
Fe₂O₃% ≤	0.05	0.02	0.05	0.02

Particle Size Composition Standard

Specification	Coarse Grain		Basic Grain	Fine Grain
Specification	Mesh Size （mm）	Mass Percent Of Oversize （%）	Mass Percent （%）	Mesh Size（mm）	Mass Percent Of Undersize （%）
25 ~ 15	20	≤ 8	83	115	≤ 9
15 ~ 10	15			110
8 ~ 5	8			5
5 ~ 3	5			3
3 ~ 1	3			1
1 ~ 0	1			0.075	≤ 10
1 ~ 0.5				0.5	≤ 9
1 ~ 0.3				0.3	≤ 9
0.5 ~ 0	0.5		67	0.075	≤ 25
0.3 ~ 0	0.3		82	0.045	≤ 10
0.2 ~ 0	0.2		77	0.045	≤ 15
0.088 ~ 0	0.09	≤ 10	90
0.074 ~ 0	0.075
0.044 ~ 0	0.045