99% Al2O3 White Fused Alumina as Refractory Materials
Alumina has a melting point of more than 2,000 degrees and a boiling point of more than 2,900 degrees. It is a high-quality raw material for refractory materials. Alumina as refractory material, it has the functions of flame retardant and anti-combustion.
Product Introduction
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Product Introduction:
Alumina as refractory material has higher hardness and slightly lower toughness. It also has high purity, self-sharpening ability, high cutting rate, less calorific value, high efficiency, acid and alkali resistance characteristics, good thermal stability.Aluminaas refractory material has the characteristics of high hardness, high compressive strength, wear resistance, abrasives, chemical inertness, high refractoriness, excellent electrical insulation properties, dielectric properties, high melting point, etc.
Product Parameter (Specification)
| Item | Typical Value | |||
| AM-CA-RC-9FG | AM-CA-RC-1 | AM-CA-RC-A99 | ||
| Chemical Composition | Al2O3 (%) | ≥99.5 | 99.72 | ＞99 |
| SiO2 (%) | 0.06 | 0.05 | ＜0.1 | |
| Na2O (%) | 0.12 | 0.04 | ≤0.4 | |
| Fe2O3 (%) | 0.04 | 0.04 | ≤0.1 | |
| MgO (%) | 0.02 | 0.02 | - | |
| CaO (%) | 0.02 | 0.02 | - | |
| Physical properties | BET Specific Surface Area (m2/g) | 0.93 | 1.28 | 1-2 |
| Particle Size D50 (μm) | 5.2 | 3.70 | 4-6 | |
| Particle Size D90 (μm) | 22.7 | 9.2 | - | |
Remarks:Can produce the specifications customers provide or give a customize a solution.
Application:
The thermal shock resistance of alumium oxide refractory depends on its microstructure and the shape and size of the product. Generally speaking, its thermal shock resistance is medium. In short, It has the properties of high temperature resistance, high strength, high hardness, oxidation resistance, electrical insulation, corrosion resistance, and good air tightness. Therefore, as a special refractory material, it is widely used. The representative use is to use its high temperature resistance, corrosion resistance and high strength as sliding nozzles, immersion nozzles, metallurgical high-purity metals or crucibles for growing single crystals in steelmaking production, and structural parts of various high-temperature furnaces. (furnace wall, furnace tube), heat-resistant and anti-oxidative coating, etc.
After replacing the Al2O3 with an appropriate amount of high-temperature powder, the high-temperature resistance of the refractory material did not decrease but increased, and the linear change rate of the refractory also increased. The reason is that adding an appropriate amount of high-temperature aluminum can appropriately increase the density of the castable. At high temperature, high-temperature al2o3 can also form mullite with micro-silica powder, which improves the high-temperature strength of the castable. Therefore, when adding high-temperature powder to refractory materials, it must be used, and low-purity high-temperature alumina powder cannot be used cheaply.
Product Packing & Delivery
FAQ
Q: The MOQ is?
A: MOQ is usually 1 ton, special products can be coordinuted with each other.
Q: Can I visit your factory?
A: Yes, we welcome you to visit our factory at anytime
Q: How about your delivery time?
A: Usually the shipment is within 15 days after confirming receipt of your payment, some products maybe need longer time.
We always carry out the enterprise spirit of 'Science and technology be human-oriented, pursuit of excellence and efficiency', providing customers with fully quality 99% Al2O3 White Fused Alumina as Refractory Materials. We adhere to the consistency of corporate development with market demand. Finest Rate Forever High-quality in China.
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