Description of high alumina insulation brick
Lightweight high alumina bricks are also known as high alumina insulation bricks. Lightweight refractory material with an alumina content of more than 48%, mainly composed of mullite and glass phase or corundum. The products are composed of mullite, corundum and glass phase. The bulk density is 0.4 ~ 1.35 g / cm3. The thermal shock resistance is excellent. The bricks are fired at 1300-1500 ° C.
Characteristics of high alumina insulation bricks
| Name | LTL-0.6 | LTL-0.8 | LTL-1.0 | LTL-1.2 |
|---|---|---|---|---|
| AL2O3 % | 50 | 50 | 55 | 55 |
| Fe2O3 % | 1.8 | 1.8 | 1.8 | 1.8 |
| Объемная плотность г / см3 | 0.6 | 0.8 | 1 | 1.2 |
| Compressive strength, N/mm², not less than | 2 | 3.98 | 4.98 | 5.98 |
| Теплопроводность Вт / м.к (350 ± 25 ℃) | 0.25 | 0.29 | 0.35 | 0.45 |
Advantages of high alumina insulation bricks
Low density
Due to the production features, lightweight high-alumina brick has a low density, which allows it to provide good thermal insulation.
High thermal insulation coefficient
Lightweight high-alumina brick has high thermal insulation capacity, which allows it to be used in technical devices where high thermal insulation is required.
Good strength
Despite its low density, lightweight high-alumina bricks are strong enough to be used in high-temperature conditions.
High operating temperature
Higher softening temperature under load and slower rate of change of refractory provide higher working temperatures, longer service life and greater safety compared to lighter refractory bricks made of similar materials.
Application of high alumina insulation bricks
Ferrous metallurgy
Lightweight high-aluminum brick is widely used in various ferrous metallurgy equipment, such as blast furnace, converter, electric furnace and other furnace lining, bedding and furnace roof elements.
Cement industry
In the process of cement production, many equipments need to use lightweight high-aluminum brick, such as rotary kiln, rotary kiln and other equipment lining and partition.
Aluminum industry
Lightweight high alumina brick is used in the aluminum industry to create thermal insulation materials for furnaces and kilns used to produce aluminum.
Glass industry
Lightweight high alumina bricks can be used as thermal insulation layer for high temperature equipment such as glass melting furnaces, glass melting furnaces and glazing furnaces in glass industry, which can improve the equipment efficiency and glass quality.
Ceramic industry
Lightweight high-alumina brick is used to create thermal insulation materials for furnaces and kilns in the ceramic industry. It can also be used to create fireproof walls and partitions in buildings where ceramics are produced.
Refining
Lightweight high-alumina brick is used to create thermal insulation materials for furnaces and kilns in the ceramic industry. It can also be used to create fireproof walls and partitions in buildings where ceramics are produced.
