Sự miêu tả
Bubble Alumina Brick Description
Bubble Alumina Brick is a kind of energy-saving heat insulation material of ultra-high temperature material. It is made of alumina hollow ball and alumina powder as the main raw materials, combined with other binders, and fired at a high temperature of 1750 degrees.
Other insulation bricks
Gạch Alumina bong bóng
Bubble Alumina Brick Specification
| Mục | Bubble alumina brick | Bubble zirconia brick | ||
| 85 | 90 | 99 | 98 | |
| Max service temperature | 1680° C. | 1700° C. | 1800° C. | 2200° C. |
| Al2O3/% | ≥85 | ≥90 | ≥99 | – |
| ZrO2/% | – | – | – | ≥98 |
| SiO2 /% | ≤13 | 8 | .20,2 | .20,2 |
| Fe2O3/% | .20,2 | .20,2 | .20,2 | .20,2 |
| Bulk density/g.cm3 | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 | .3.0 |
| Cold crushing strength/Mpa | ≥12 | ≥10 | ≥9 | ≥8 |
| Độ khúc xạ dưới tải (0.1MPa,0.6%) | ≥1650°C | ≥1700°C | ≥1700°C | ≥1700°C |
| Hâm nóng thay đổi tuyến tính % (1600 ° C.,3h) ≤ | ±0.3 | ±0.3 | ±0.3 | ±0.3 |
| Thermal expansion coefficient (Room temp-1300°C) | ~7.8 | ~8.0 | ~8.6 | ~9.0 |
| Thermal conductivity w/(m.k)(Average 800°C) | ≤0.8 | ≤1.3 | 1,5 | .30,3 |
Production process of bubble alumina bricks
Chuẩn bị nguyên liệu (alumina powder and additives) → mixing → foaming (physical foaming and chemical foaming) → molding → drying → sintering → cooling → cutting and processing → quality inspection
On-site inspection of bubble alumina bricks
What does excess of alumina cause in bricks?
- Alumina itself is non-toxic. If excessive aluminum is ingested in daily life, it will easily cause mental retardation, slow reaction, vân vân., and will also affect the growth and development of human bones.
- Frequent inhalation of the dust of this substance will not only affect the functions of various organs, but also cause a decrease in resistance and immunity.
- Alumina generally produces a large amount of dust during production, which will affect the environment, production equipment, and personal safety.
- Excessive alumina may cause tiles to be loosely bonded and hollow and fall off.
What is the main function of alumina in brick?
- Improve hardness and wear resistance
- Improve high temperature stability and corrosion resistance
- Anti-pollution performance
- Beautiful and diverse decorative effects
What are alumina bricks used for?
High temperature insulation: Bubble alumina bricks are mainly used for insulation in high temperature environments, such as high temperature kilns, metallurgical kilns, lò nung thủy tinh, vân vân.
Hiệu quả tiết kiệm năng lượng: Due to its excellent thermal insulation performance, bubble alumina bricks can significantly reduce energy consumption and achieve energy-saving effects.
Đánh giá
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