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White fused alumina for refractories 1-3mm
White fused alumina for refractories 1-3mm refers to white fused alumina grain with a particle size range of 1mm-3mm. Large blocks of white fused alumina produced by the smelting workshop are transported to the section sand production workshop, broken by the coarse crusher, and then screened; finally, White fused alumina products with particle sizes within a range of 1-3mm. It is the primary raw material for shaped refractory, unshaped refractory, and other applications. White fused alumina refractory grades is a high-grade refractory materials with high purity, high cleanness, coarse grain, low magnetic contents, high density, high bulk density, chemical stability, low porosity rate, and excellent crystal structure, corrosion, and acid-resistant. It is widely used in the production of refractory bricks, steel making industry, ceramic, glass, cement industry, etc.
Introduce of white fused alumina for refractories 1-3mm:
White fused aluminium oxide for refractories was from high-quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3. With Al2O3 purity of up to 99%, White fused alumina is a high-level refractory raw material that can work as refractory castable, aggregate, refractory coating, etc.
Chemical composite and physical properties of white fused alumina for refractories 1-3mm:
| Items | Grain |
| Al2O3 | 99.3%min |
| SiO2 | 0.10%max |
| Fe2O3 | 0.10%max |
| Na2O | 0.30%max |
| Melting point(℃) | 2250 |
| Real density(g/cm3) | 3.90min |
| Refractoriness （℃） | ≥1900 |
| Color | White |
| Size | 1mm-3mm |
Product features of white fused alumina for refractories 1-3mm:
- High hardness: Mohs hardness is 9.0, and Vickers hardness(HV) is 2000-2200.
- Good toughness: For example, the compressive strength of white fused alumina F120 is 100KN/cm2.
- High density: The volume density of WFA is 3.6g/cm3.
- High-temperature resistance with low thermal conductivity and low coefficient of linear expansion. So it can resist thermal shock.
- PH value: White fused alumina is a neutral substance with a PH value of 7.0-8.0.
- High resistance to chemical corrosion. White fused alumina is resistant to most acid and alkali materials.
Applications of white fused alumina for refractories 1-3mm:
- Refractory aggregate for ladle in the steel-making industry.
- Kiln construction.
- Furnace building.
- Refractory bricks.
- Ceramic Tiles special ceramics.
- Technical ceramics.
White Fused Alumina（FAQ）
Which method of transport would be better?
Generally, we suggest to make shipment by sea which costs less. We also can follow other transportation method you asked.
What is the structure?
Structure is basically the spacing between abrasive grains. An open structure would be 12 or higher while a closer structure would be 6 or so. Here again, the structure depends on a variety of factors not the least of which is how difficult the material is to grind.
Amount of abrasive applied:
This decision is made by knowing the type of material you will be working with. Open Coat – Here, the abrasive granules cover from 50% – 70% of the backing and are set at pre-determined spacing to reduce loading. Used on softer surface materials that tends to load or fill
What is a mesh vs. Grit size?
If you take a (1) inch space and add wires to it, the number of openings within the 1″ space is defined as mesh. For example, if the 1″ space has ten openings for particles to fall through, then that sieve would be called a 10 mesh sieve. Typical sieve
What are the different coated abrasive grain types and their characteristics?
Aluminum Oxide – Aluminum Oxide is brown or reddish in color and a man-made abrasive. It is durable with tough cutting edges. It offers long life and is highly wear resistant even under stress applications. Its applications include aluminum, ferrous metals (including alloy steel), hardwood, and leather. Crocus – Crocus
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