Alumina hollow sphere bricks
This product features high purity, excellent thermal insulation performance, high strength and wear resistance, and good thermal shock resistance.
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Detailed introduction
Product Introduction
This product features high purity, excellent thermal insulation performance, and boasts high strength, wear resistance, and good thermal shock resistance. It is suitable for use in thermal insulation applications with stringent temperature requirements. It is commonly employed as lining and thermal insulation for high-temperature kilns in industries such as petrochemicals, metallurgy, and refractory materials.
To date, it has been adopted in over 50 manufacturers’ imported and domestically produced kilns across the country and has demonstrated excellent performance. It was awarded the First Prize for Scientific and Technological Progress in Henan Province and has an annual production capacity of 1,500 tons.
Product Parameters
| Project | Alumina hollow sphere brick Al₂O₃ | Alumina hollow sphere brick 90 | Lightweight Corundum Aggregate 0.8–1.5 |
|
| JM-ABB-85 | JM-ABB-99 | |||
| Maximum operating temperature, ℃ | 1750 | 1800 | 1750 | 1500–1550 |
| Al₂O₃ ≥ | 88 | 99 | ≥90 | 85 |
| SiO₂% ≥ | One | 0.3 | ||
 Fe₂O₃% |
0.5 | 0.15 | ≤0.3 | <1.0 |
| Volumetric density, g/cm³ | 1.40–1.8 | 1.5~2.0 | 1.40–1.45 | 0.8–1.5 |
| Normal-temperature pressure resistance, MPa ≥ | 8 to 15 | 10-18 | ≥10 | 9-12 |
|
Softening temperature under load ℃ (0.2 MPa · 0.6%) ≥ |
1650 | 1700 | ≥1700 | - |
| Re-burning line change rate (1600℃ × 3h) % | ±0.3 | ±0.3 | ±0.3 | 0.5–0.7 |
| Thermal conductivity, W/m·K (average temperature: 800℃) | 0.9 | 1.0 | 1.0 | 0.5–0.7 |
| Application | Primarily used as working linings and backings for hydrogen production furnaces, gasification furnaces, carbon black reactors, and medium-frequency reaction furnaces in the petrochemical industry; as well as high-temperature kiln linings in the refractory and ceramics industries and linings for metallurgical heating furnaces. | |||
Collaboration Case
Gongyi Jinma Furnace Materials Co., Ltd. is wholeheartedly committed to providing customers with high-quality services and sincerely cooperating with friends from all walks of life to create a bright future together.
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