Polycrystalline Composite Hollow Spheres
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Product Introduction
Product Details
Polycrystalline Composite Hollow Spheres
Polycrystalline composite hollow spheres are primarily manufactured by melting A+ grade industrial low-sodium alumina powder, premium custom-grade light-burned magnesia powder, and specialized raw materials. Their unique hollow structure and polycrystalline composite composition confer low density and high specific surface area, while also delivering outstanding thermal stability, mechanical stability, and chemical stability.
As a premium, multifunctional composite material offering high performance, high-temperature resistance, low thermal conductivity, alkali resistance, reduction atmosphere resistance, and lightweight properties, polycrystalline composite hollow spheres hold broad market prospects. They serve as ideal thermal insulation fillers for high-temperature/ultra-high-temperature furnaces and kilns, as well as superior aggregates for high-temperature lightweight refractory castables. They are also ideal working layer materials for weight reduction in heavy materials and thermal conductivity reduction. Their high specific surface area also enables extensive applications as catalyst carriers and adsorbent materials.
Polycrystalline Composite Hollow Sphere Product Specifications
| Specification | Guaranteed Value | Typical Value | |
|---|---|---|---|
| Chemical Composition (%) | Al₂O₃ | 74~76 | 75.1 |
| MgO | 23~25 | 24.0 | |
| CaO | ≤0.55 | 0.35 | |
| SiO₂ | ≤0.4 | 0.15 | |
| Fe₂O₃ | ≤0.4 | 0.16 | |
| Na₂O | ≤0.3 | 0.06 | |
| Bulk Density (g/cm³) | 0.6-1.2 | N/A | |
| Crushing Rate (%) | ≤15 | 12 | |
| Refractoriness (℃) | 1950 | 1950 | |
| Particle Size | Φ5-3-2-1-0.5-0.2-0.1mm | Φ5-3-2-1-0.5-0.2-0.1mm | |
| Inspection Standard | GB/T3044-89 | GB/T3044-89 | |
| Packaging | 25KG/small bag,1000KG/jumbo bag(can be customized according to customer requirements) | 25KG/small bag,1000KG/jumbo bag(can be customized according to customer requirements) |
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Polycrystalline Composite Hollow Spheres
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