lightweight mullite insulating refractory fire brick for ceramic
industry
1. Description
Mullite insulating brick, using high pure mullite as raw material,
is made by adding alumina powder according to different type and
then sintering in high temperature.
Classified by working temperature, there are JM-23,JM-26,JM-28,
JM30, JM32.
These products can directly contact with fire, characterized with
high temperature resistance, lightweight, low thermal conductivity,
good energy saving effect,
specially suitable for cracking furnace, hot blast furnace, ceramic
roller kiln, porcelain kiln extraction, glass crucible and various
electric furnaces as lining.
It is an ideal product of energy efficiency and longevity.
2. Features
Mullite insulating bricks characteristics and advantages: 1. Lower
content of iron, alkaline and impurities, good high temperature
properties. 2. Homogeneous structure, light weight, energy saving
because lower heat storage in the furnace during cooling cycles. 3.
High strength, good thermal shock resistance under high
temperature. 4. Precise sizes due to grinding and shaping after
sintering, which meets the requirement of construction. 5. Max
service temp: Up to 1730C (3160F)
3. Application
1. Carbon bake furnaces in the aluminum industry
2. Preheat zones and cyclones of rotary cement kilns
3. Insulation for glass tanks
4. Fireplace and pizza ovens
5. Coke ovens
6. Blast furnaces
7. Reheating furnaces
8. Suspended roofs
9. Lime kilns
10. Chimney
4. Specification
Mullite Insulating Brick
| Brands | AL2O3%≥ | FE2O3≤ | BD G/CM3≤ | CCS MPA≥ | PLC ℃X H≤1.0% | TCS W/M.K≤ |
| 400℃ | 600℃ | 900℃ |
| MD-0.5 | 45 | 0.8 | 0.5 | 2 | 1350×12 | 0.18 | 0.22 | 0.26 |
| MD-0.6 | 55 | 0.8 | 0.6 | 2.5 | 1350×12 | 0.26 | 0.3 | 0.32 |
| MD-0.8 | 65 | 0.7 | 0.8 | 3 | 1450×12 | 0.28 | 0.32 | 0.36 |
| MD-1.0 | 72 | 0.6 | 1 | 4 | 1450×12 | 0.3 | 0.35 | 0.4 |
B C serises
| Item | JM23 | JM26 | JM28 | JM30 |
| AL2O3(%) | 38-44 | 50-58 | 65-70 | 70-73 |
| Fe2O3(%) | 1 | 0.9 | 0.8 | 0.7 |
| Classification Temperature (℃) | 1350 | 1430 | 1540 | 1600 |
| Bulk Density (g/cm3) | 0.8-1 | 0.8-1 | 0.8-1 | 0.8-1 |
| Reheating Linear Change (%) | 1250℃ | 1400℃ | 1500℃ | 1550℃ |
| CT-30 ℃X 8H | -0.5 | -0.5 | -0.5 | -0.5 |
| Cold Crushing Strength (Mpa) | 3.0-4.5 | 3.0-4.5 | 3.0-4.5 | 3.0-4.5 |
| Modulus of Rupture (Mpa) | 1.5 | 1.7 | 1.8 | 2 |
| Thermal conductivity400℃(W/m.k) | 0.25 | 0.27 | 0.32 | 0.41 |
| Thermal Expansion1000℃(%) | 0.5 | 0.7 | 0.8 | 0.9 |
| Item | B-1 | C-1 | C-2 |
| AL2O3(%) | 25-30 | 35-40 | 45-50 |
| Fe2O3(%) | 2 | 1 | 1 |
| Classification Temperature (℃) | 1000 | 1300 | 1400 |
| Bulk Density (g/cm3) | 0.8-1 | 0.8-1 | 0.8-1 |
| Cold Crushing Strength (Mpa) | 2-2.5 | 2.5-3.5 | 3.0-4.5 |
| Thermal conductivity400℃(W/m.k) | 0.17 | 0.23 | 0.25 |
The technical data pertains to machine pressed standard bricks in
compliance with the testing standard. These data are typical
approximate guide value. Not to be construed as a binding
specification.
Size tolerance ±1.% or 1.5mm whichever is greater.
Insulating Bricks with properties of higher values available where
applications require the same.
