During the use of high alumina bricks, they are subjected to physical, chemical, mechanical and other effects at high temperatures, which can easily melt or be eroded and worn, resulting in cracking and damage, interrupting the operation and contaminating the material. Based on the composition and performance indicators of high alumina bricks, the usage of high alumina bricks at high temperatures can be predicted.
1. For high alumina bricks with special requirements, their thermal conductivity, electrical conductivity, and breathability should also be considered.
2. Can withstand high temperature heat load without softening or melting. Require high fire resistance of high alumina bricks.
3. Can resist chemical erosion from molten liquids, dust, and gas, without deterioration or corrosion. High alumina bricks are required to have good slag resistance.
4. Can resist rapid temperature changes or uneven heating without cracking or peeling. High alumina bricks are required to have good thermal shock resistance.
5. It can resist the erosion, impact, and wear of flames, furnace materials, and material dust, without surface loss. High alumina bricks are required to have considerable compactness and wear resistance at room temperature and high temperature.
6. Can resist high temperature heat load, with no volume shrinkage and only uniform expansion. High alumina bricks are required to have high volume stability, minimal residual shrinkage and swelling, no crystal transformation, and severe volume effects.
7. Resist the effects of high temperature vacuum operation and atmosphere changes, non-volatile, and undamaged. Require high alumina bricks to have low vapor pressure and high chemical stability. Neat appearance, accurate specifications and dimensions of high alumina bricks, high quality and low price, easy to transport, construct and maintain.
8. It can resist the combined effects of high temperature heat load and heavy load, without losing strength, creep and collapse. High alumina bricks are required to have considerable room temperature strength and high-temperature thermal strength, high load softening temperature, and high creep resistance.
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