While Fused Alumina (Al2O3 ≥99.3%) is also known as white fused corundum, it is obtained from the fusion of high purity calcined alumina in electric arc furnaces.
White fused alumina is widely used as a raw material in refractories, ceramics shapes, grinding wheels, sandpaper, blasting media, metal preparation, laminates, coatings, lapping, polishing, grinding and hundreds of other applications. White fused alumina bubbles, grains and powders are available in standard mesh, grit and powder sizes and they can also be made to individual specifications.
Available particle size include: 0-1mm; 1-3mm; 3-5mm; 5-8mm;Powder or as customer's requirement.
Main characteristics include High hardness, High purity and whiteness, Good self-sharpening for abrasion, Strong grinding ability, Acid-alkali corrosion resistance, High temperature resistance and good thermal stability.
White fused alumina is a high-performance refractory material capable of withstanding high temperatures and chemical corrosion. It is made of alumina, zirconia and other materials. It has the characteristics of high hardness, high melting point, high thermal conductivity, and excellent chemical stability. It is widely used in high-temperature furnaces, sulfuric acid and other strong acids.
1. Raw material screening and mixing: Adjust the ratio of raw materials according to different application scenarios to obtain finished products with specific properties.
2. Mold preparation: It is necessary to select appropriate materials and processing techniques to manufacture molds according to actual needs.
3. Forming processing: It is necessary to achieve uniform filling and appropriate compaction to avoid quality problems such as air bubbles and cracks.
4. Sintering treatment: The formed white corundum parts need to be sintered to make the raw material molecules combine with each other and form a high-density crystal structure.
5. Processing and testing: After sintering, the finished white corundum product needs to be processed and tested.
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Chemical composition |
Al2O3 |
≥99.3 % |
|
Fe2O3 |
≤0.1 % |
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|
Na2O |
≤0.4 % |
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SiO2 |
≤0.15 % |
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Mosh Hardness |
9 |
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Bulk density |
1.4-2.1 g/cm3 |
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|
Specific Gravity |
3.9-4.1 g/cm3 |
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|
Melting point |
2250 ℃ |
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Maximum service temperature |
1900 ℃ |
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Color |
White |
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