Loading Port:China Main Port
Payment Terms:TT or LC
Min Order Qty:2 Tons m.t.
Supply Capability:5000 Tons per Month alumina bubble brick in stock m.t./month
Features of Refractory AKZ-85 Alumina Bubble Brick
1.High compressive strength
2.Excellent thermal shock resistance
3.High thermal efficiency of the kiln
Description of Refractory AKZ-85 Alumina Bubble Brick
alumina bubble brick refractory brick bricks have high-alumina bauxite powder and refractory clay as raw materials and some inflammable additions, shaped by tamping or extrusion pressing and fired in high-temp tunnel kiln after being dried.
alumina bubble brick refractory bricks have three brands in accordance with their bulk densities, which are decided by the amount of the inflammable additions. alumina bubble brick refractory bricks with large bulk density have the features of high mechanical strength and small change of load at a high temperature.
Used alumina bubble brick Features
·High compressive strength
·Excellent thermal shock resistance
·Able to lower the heat capacity of the furnace wall
·High thermal efficiency of the kiln
·All types of products available as customers require.
Application of alumina bubble brick
alumina bubble brick can be Used in heat-insulating layers and furnace linings of thermal equipment, such as, roller kilns ceramics, heating furnaces petrochemical reforming, reforming furnaces, soaking ptis metallurgy and blast furnaces.
Physical and chemical index of Refractory AKZ-85 Alumina Bubble Brick
Item | AKZ-85 | AKZ-90 | AKZ-99 | |
Chemical composition | Al2O3 | ≥85 | ≥90 | ≥99 |
SiO2 | ≤13 | ≤8 | ≤0.2 | |
Fe2O3 | ≤0.5 | ≤0.5 | ≤0.5 | |
Apparent Porosity% | 58-62 | 58-62 | 58-62 | |
Bulk Density g/cm3 | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 | |
Cold Crushing Strength Mpa | ≥12 | ≥10 | ≥9 | |
0.1Mpa Refractoriness Under Load T0.6 °C | ≥1650 | ≥1700 | ≥1700 | |
Permanent Linear Change On Reheating
(%)1500°CX2h | ±0.3 | ±0.3 | ±0.3 | |
20-1300°C Thermal Expansion % (x 10-6) | 0-7.8 | 0-8.0 | 0-8.6 | |
Thermal Conductivity(Average 800°C) W/(M.K) | ≤0.8 | ≤1.3 | ≤1.5 | |
Max Service Temperature °C | 1680 | 1700 | 1800 |