刚玉砖_氧化铝空心球砖
刚玉砖 氧化铝空心球砖(Corundum bricks):
刚玉砖是选用致密电熔刚玉、氧化铝微粉等为主要原料，机械混合后高压成型，高温烧成。通过刚玉砂的纯度以及工艺配方来满足不同刚玉制品使用温度的要求。
Corundum bricks use compact electrosmelted corundum and alumina powder as main raw materials,shaped under high pressure after machine-blending and fired at high temperature.The purity and the amount of corundum determine different corundum products to be used at different temperatures.
Customized products can be ordered.
Δ产品性能（Function of product):
1、重质材料致密性好，耐压强度高，耐各种腐蚀性气体侵蚀，热震稳定性佳，导热性能优良，耐磨损。
The heavy material,good compactness,high strength,resistant to various corrosive gas,good thermal shock resistance,good thermal conductivity,wear resistance.
2、轻质材料内部结构均匀，耐压强度高，抗侵蚀，耐热震，抗氧化，使用温度高，导热率低。
The internal structure of lightweight material uniformity,high strength,corrosion resistance,thermal shock resistance,oxidation resistance,high temperature,low thermal conductivity.
Δ主要指标(Technical data)：
|
性能指标/牌号 (Performance index/Material type) |
电熔刚玉砖 (Fused corundum brick) |
高纯刚玉砖 (High pure corundum brick) |
刚玉莫来石砖 (Mullte corundum brick) |
氧化铝空心球砖 (Light corundum brick)
|
| AI2O3 %≥ | 99 | 99 | 70~80 | 75~95 |
| SiO2 % | ≤0.5 | ≤0.5 | 18~8 | 23~3 |
| Fe2O3 %≤ | 0.1 | 0.5 | 0.2 | 0.3 |
| 体积密度 Bulk Density g/cm3 | ≥3.8 | ≥3.15 | 2.2~2.9 | 1.2~1.5 |
| 常温耐压强度 Cold Compressive Strength ≥MPa | ≥70 | ≥60 | 30~80 | 15~25 |
| 重烧线变化 Linear Change On Reheating %≤ | 1800×3h/±0.2 | 1800×3h/±0.2 | 1600×3h/±0.2 | 1600×3h/±0.2 |
| 显气孔率(Apparent porosity) | ≤20 | ≤20 | 18~25 | --- |
| 最高使用温度(Highest use temp)℃ | 1800 | 1800 | 1700 | 1600 |
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