It is widely used in the lining of the kiln working face which is in direct contact with the flame, and has become one of the research hotspots in recent years.
Mullite insulating brick for hot blast stove
Shaped lightweight heat-insulating refractory bricks are shaped block-shaped heat-insulating refractory products with a porous structure inside and thermal insulation properties. Among them, brick-shaped products are the most widely produced and used, so they are also called lightweight heat-insulating refractory bricks. Shaped mullite products mainly refer to mullite light insulation bricks, which are a new type of insulation material with Al2O3 content of 50%~80% and mullite (3Al2O3.2SiO2) as the main crystal phase and combined phase.
|
Project |
Al2O3%≥ |
Fe2O3(%) ≤ |
Bulk density g/cm3≤ |
Cold crushing strength MPa CCS |
Permanent linear change℃×h≤2% |
Thermal Conductivity w/m.k |
0.2MPasoftening temperature under load0℃ |
||
|
400℃ |
600℃ |
1000℃ |
|||||||
|
DLM-0.3 |
75 |
0.3 |
0.3 |
3.5 |
1350×12 |
0.18 |
0.22 |
0.26 |
1350 |
|
DLM-0.5 |
75 |
0.5 |
0.5 |
5.0 |
1380×12 |
0.22 |
0.26 |
0.30 |
1380 |
|
DLM-0.6 |
75 |
0.6 |
0.6 |
5.8 |
1420×12 |
0.26 |
0.30 |
0.32 |
1420 |
|
DLM-0.8 |
75 |
0.8 |
0.8 |
7.5 |
1450×12 |
0.28 |
0.32 |
0.36 |
1450 |
|
DLM-1.0 |
75 |
1.0 |
1.0 |
8.5 |
1480×12 |
0.30 |
0.35 |
0.40 |
1480 |
Because mullite light insulation brick has the following advantages:
High temperature strength
Good high temperature stability
Small coefficient of thermal expansion
Good thermal shock resistance and other advantages
It is widely used in the lining of the kiln working face which is in direct contact with the flame, and has become one of the research hotspots in recent years.
Insulating fire brick is a new type of building material synthesized with polymer materials. The main function is to keep warm, reduce heat loss and improve thermal efficiency.
The alkali-resistant brick for cement kiln has the characteristics of strong alkali erosion resistance, good thermal shock resistance and high cost performance.
The refractory ramming material is prepared from a high proportion of granular and powdery materials and a very low proportion of binders and other components, even all of which are composed of granules and powders, and are subject to strong ramming. Bulk materials for construction.
The alumina ball is also called the high aluminum accumulation of heat ball.High alumina refractory ball is based on bauxite as the mainly raw refractory material.Adding powder and additives and anchoring agent.After proportioning, molding and high sintering to make it.The production engineering of high alumina refractory ball is similar to that of high alumina refractory brick.It should be based on the properties of raw materials,high alumina refractory ball requires production conditions and other factors to determine.
Chrome corundum brick refers to corundum refractory products containing Cr2O3. At high temperature, Cr2O3 and Al2O3 form a continuous solid solution, so the high temperature performance of chromium corundum products is better than that of pure corundum products. Chromium corundum products are widely used, and the content of Cr2O3 is mostly in the range of 9% to 15%.
silicon mullite brick is a kind of refractory brick product made of super high alumina bauxite and silicon carbide as raw materials through a special sintering process. It has the characteristics of continuously forming a protective layer and reducing ring formation, and its heat resistance is also very good. The softening temperature under load can reach 1600 ℃, and the service life is long. Mainly used in the transition zone, decomposition zone and cooler of small and medium-sized cement kilns.
Converter, electric furnace gunning material has the characteristics of high adhesion rate, good high temperature corrosion resistance, etc.
Brown corundum refractory brick is made of fused corundum as the main raw material. It is formed by high pressure and fired at high temperature. It has high thermal shock stability, low porosity, low expansion, good resistance to melt vapor and gas erosion, and excellent oxidation resistance. Dimensionally accurate advantages.

