Light mullite brick is made of high quality and high purity refractory material, adding organic composite filler according to the specific gravity of the product, forming by vacuum extrusion and sintering at high temperature. With its light weight and excellent insulation performance, light mullite brick is widely used in a variety of thermal equipment hot surface refractory lining or insulation layer, to improve the energy efficiency of equipment to create conditions.
With mullite main crystalline phase of high alumina refractory, the general alumina content is between 50% and 75%. The refractory temperature of mullite light brick can reach more than 1790ºC. Load softening starting temperature 1600-1700ºC. Normal temperature pressure resistance 70-260MPa. Good thermal shock resistance. There are sintered mullite bricks and fused mullite bricks.
Sintered mullite brick is made from high bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as the binder, by forming and firing. Fused mullite brick is made of high bauxite, industrial alumina and fireclay, adding charcoal or coke fine particles as reducing agent. The crystallization of fused mullite is larger than that of sintered mullite, and the thermal shock resistance is better than that of sintered products. Their high temperature performance mainly depends on the content of alumina and the uniformity of the distribution of mullite phase with glass.
High alumina refractory with mullite (3Al2O3·2SiO2) as the main crystalline phase. Generally, the alumina content is between 65% and 75%. In addition to mullite, the lower alumina content also contains a small amount of glass phase and cristobalite; Higher alumina content also contains a small amount of corundum. Lightweight mullite brick can be directly used in high-temperature kiln lining, and has been widely used in shuttle kiln, roller kiln, glass and petrochemical kiln lining.
Characteristic & Application
Product features:
Low thermal conductivity, low heat capacity, high hot state compressive strength and other characteristics, can be processed accurate shape size, make special shape.
Typical applications:
Heat-resistant surface lining and other refractory backing insulation layer, iron and steel, metallurgy, chemical industry cracking furnace, tube heating furnace, conversion furnace, hot blast furnace, ladle insulation lining, shuttle kiln tunnel kiln, ceramic roller kiln, push plate kiln and other industrial furnace refractory heat insulation materials.
| Item |
Performance index |
| JM-23 |
JM-23 |
JM-26 |
JM-28 |
JM-30 |
| Classification temperature,ºC |
1260 |
1350 |
1430 |
1540 |
1650 |
| Volume density,g/cm³ |
0.6 |
0.8 |
0.8 |
1.0 |
1.0 |
| Compressive strength at room temperature,MPa |
1.3 |
2.0 |
3.0 |
3.5 |
3.5 |
| Heavy burn line change,% |
1250×12h |
1320×12h |
1400×12h |
1510×12h |
1600×12h |
| -0.5 |
-0.5 |
-0.5 |
-0.9 |
-0.9 |
Q1 : What's the MOQ. Can I get a sample of free?
A1: MOQ, according to the actual situation. We can offer a sample of free. Please, friendly bear the shipping cost.
Q2 : When can i get the quotation?
A2: We can give you reply with quotation quickly if you kindly send the inquiry with following factors: working temperature, maximum working temperature, bulk density, dimension (length*width*thickness), and quantity.
Q3 :What's the MOQ of trial order?
A3: No limit, we can offer the best suggestions and solutions according to your condition
Q4 : What is the HS code?
A4: The HS code is 68061010.
Welcome your inquiry and expect to provide satisfactory products and services for you.
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