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.
White fused alumina for refractories 3-5mm
White fused alumina for refractories 3-5mm refers to white fused alumina grain with a particle size range of 3mm-5mm. 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 3-5mm. White Fused Alumina is a hard, dense, fire-proof, sharp-edged, wear-resistant, and corrosion-resistant material. White Fused Alumina for Refractory is a mineral for shaped and unshaped refractory products in fire-proof, precision casting, foundry and coating industries. It is the primary raw material for shaped refractory, unshaped refractory, and other applications.
Introduce of white fused alumina for refractories 3-5mm:
White fused alumina from fusing industrial alumina in an electric arc furnace under carefully controlled conditions at high temperatures. The dense mineral is white and has predominantly large crystals of Alpha Alumina. White fused alumina (WFA or WA) is an important raw material for advanced refractories and abrasives, a widely used raw material in refractories, ceramics shapes, grinding wheels, sandpaper, blasting media, metal preparation, laminates, coatings, lapping, polishing, grinding, and hundreds of other applications. It is a very pure, low iron alumina; specific refractory applications include high tech refractory castables, isostatic pressed refractories, and pre-cast refractory shapes. The benefits of white fused alumina in these applications are high alumina content, low impurities, and stability at high temperatures.
Chemical composite and physical properties of white fused alumina for refractories 3-5mm:
| 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 | 3mm-5mm |
Product features of white fused alumina for refractories 3-5mm:
- 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 3-5mm:
- 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）
What is porosity?
Porosity is defined as the gas proportion (cavity volume) of a particle’s total volume. It can be determined using different measurement techniques, such as gas adsorption and mercury porosimetry. With the same grain size and shape, a lower bulk density corresponds to a higher porosity of the grains.
What is melting vs. Sintering?
When processing minerals in a furnace, materials can either be melted or sintered. When materials are melted during the production process the minerals go from a solid state, to a liquid state, then is re-solidified during the cooling process creating uniformity in the chemistry throughout the entire batch. The sinerting process
What is the grit type?
Grit type is either aluminum oxide (white, pink, ruby red, brown, grey, etc.) silicon carbide (black or green), ceramic (blue and pink) or any combination of these. Grit types are sometimes mixed in combination for achieving certain cutting characteristics. Aluminum oxide is friable (white) or semi-friable (pink, brown and grey, red,
What is the refractive index of white fused alumina compared with that of glass?
The refractive index of fused alumina is approx. 1.76, whereas that of normal glass types is approx. 1.4. The closer the refractive indices are to each other, the more transparent the system (e.g. varnishes).
Where’s your main market?
Our main market include Europe,America,Oceania,Asia.,etc.
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