Description of Mullite Insulation Fire Brick
The mullite insulation brick is a new type of refractory material , which can directly contact the flame and has the characteristics of high temperature resistance, high lightness, small thermal conductivity, good thermal shock resistance, and significant energy saving effect. Used for lining of cracking furnace, hot air furnace, ceramic roller kiln, electric porcelain drawer kiln, glass crucible and various electric furnace.
Application of K23 Mullite Insulation Brick
K23 Firebrick is widely used for heat-insulating purpose in many kinds of industrial furnace, electric furnace and metallurgical stove,Cracking furnace in petroleum, Hot blast furnace in metallurgy,Ceramic roller kiln, tunnel kiln, shuttle kiln for electrical porcelain,Pot furnace for glass industry, Inner lining of kinds of electrial furnaces and high temperature equipment.
K26 Mullite Insulation Brick
.Metallurgical Industry: blast furnace, hot blast furnace, heating furnace, etc..
.Ceramic Industry: roller kiln, kiln, etc..
.Glass Industry: glass furnace regenerator, etc.
.Carbon Industry: carbon furnace, etc..
.Aluminum Electrolysis Industry: aluminum reduction cell, etc.
.Other Industries: tunnel kiln, shuttle kiln, etc
K28, K30- Mullite Insulation Brick (IFB)
Technical Dates of Mullite Insulation Fire Brick
| Brand | K23 | K26 | K28 | K30 | K32 | |
| USA Brand | IFB2300 | IFB2600 | IFB2800 | IFB3000 | IFB3200 | |
| Classification Temperature (℃) | 1260 | 1430 | 1540 | 1650 | 1760 | |
| Bulk Density (g/cm3) | 0.55-0.62 | 0.78-0.8 | 0.88 | 1.03 | 1.25 | |
| Cold Crushing Strength (Mpa) | 1.2 | 1.6 | 2.1 | 2.5 | 3.5 | |
| Modulus of Rupture (Mpa) | 0.9 | 1.4 | 1.6 | 2.1 | 2.1 | |
| Reheating Linear Change (%) | 1230℃ | 1400℃ | 1510℃ | 1620℃ | 1730℃ | |
| CT-30 ℃X 8H | -0.5 | -0.5 | -0.5 | -0.9 | -0.9 | |
| Thermal Expansion 1000℃（%） | 0.5 | 0.7 | 0.8 | 0.9 | 1.1 | |
| Thermal conductivity（W/m.k） | 400℃ | 0.14 | 0.27 | 0.32 | 0.41 | 0.49 |
| 600℃ | 0.16 | 0.29 | 0.34 | 0.43 | 0.5 | |
| 800℃ | 0.18 | 0.31 | 0.36 | 0.44 | 0.51 | |
| 1000℃ | 0.2 | 0.33 | 0.38 | 0.45 | 0.53 | |
| Al2O3 (%) | 37 | 54 | 64 | 72 | 77 | |
| Fe2O3 (%) | 1 | 0.9 | 0.8 | 0.7 | 0.5 | |
