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High alumina thermal insulation brick
Key words:
High alumina thermal insulation brick
Key words:
High alumina thermal insulation brick
Classification:
- Product Description
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Project Indicators LG140-1.2 LG140-1.0 LG140-0.8L LG135-0.7L LG135-0.6L LG125-0.5L Bulk density/(g/cm³) μ0≤ 1.2 1.0 0.8 0.7 0.6 0.5 S 0.05 Normal temperature compressive strength/MPa μ0≥ 4.5 3.5 2.5 2.2 1.6 1.2 S 1.0 0.5 0.2 Xmin 4.0 3.0 2.2 2.0 1.5 1.0 Change of permanent heating line/%(T/℃× 12 h) Test temperature T/℃ 1400 1350 1250 Xmin～Xmax -2～1.0 Thermal conductivity/[W/(m · K)]≤ average temperature (350±25)℃ 0.55 0.50 0.35 0.30 0.25 0.20 Project Indicators LG DLG Allowable deviation of dimension Size ≤ 100 ±1.5 1.0 Size 101~250 ±2 Soil 1.0 Size 251~400 ±3 Soil 1.5 Distortion Length 101~250 1 0.8 Length 251~400 1.5 1.0 Length of missing edge (a B c) ≤ 60 35 Length of missing angle (e f g) 60 55 Molten hole diameter 5.0 5.0 crack length Width ≤ 0.25 No restrictions No restrictions Width 0.26~1.0 30 30 Width> 1.0 Not allowed to have Not allowed to have relative edge difference Thickness 1.0 1.0 Note 1: According to the needs of the user, a main size of the brick can be divided.
Note 2: Low-iron and high-alumina thermal insulation refractory bricks shall be ground and processed, and ordinary high-alumina thermal insulation refractory bricks can be ground by agreement between the supplier and the demander.Test Method
The inspection and sample preparation of brick shall be carried out according to GB/T 7321.
The chemical composition shall be determined according to GB/T 6900 or GB/T-21114.
The bulk density shall be tested according to GB/T 2998.
The compressive strength at room temperature shall be tested according to GB/T 5072.
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