Fireclay Brick
MOQ: 5 tons
Description
The production process of refractory fireclay refractory brick is divided into raw material treatment, molding, drying, high temperature calcination and other steps. Fireclay brick is made of fire clay, calcined chamotte,mullite etc. The raw materials first need to be mixed in proportion, screened and ground to produce fine, uniform particles. The bricks have low porosity,high strength, good resistance to thermal spalling and to abrasion and to creep. Fireclay refractory bricks, also known as sintered bricks, are one of the oldest building materials in the world.
Features
The specific characteristics of refractory fireclay brick include:
High temperature resistance: Refractory clay bricks can withstand high temperatures up to 2000℃, so they can still maintain stable physical and chemical properties in high temperature environment.
Good chemical resistance: Refractory clay bricks have good resistance to acid, alkali, salt and other chemical corrosion properties.
High strength and hardness: After high temperature calcination, the density and hardness of refractory clay bricks are significantly improved, with high strength and wear resistance.
Corrosion resistance: Because its surface is smooth and flat, it is not easy to absorb dust and impurities, so it also has good resistance to fluid erosion.
Workability: Refractory clay brick can be processed in various shapes and sizes according to the needs of different uses.
In short, refractory fireclay brick has become an indispensable refractory material in many high temperature equipment because of its excellent high temperature refractory performance and chemical stability.
Application
Fireclay brick is widely used in the lining of coke oven, glass kiln, cement rotary kiln, lime kiln, all kinds of incinerator, heating furnace, etc.
Physical And Chemical Indicators
| Description |
DN-17 |
DN14 |
DN12 |
SK34 |
SK33 |
SK32 |
|
| Refractoriness (SK) |
34 |
34 |
34 |
34 |
33 |
32 |
|
| Bulk density (g/cm3) |
2.25 |
2.34 |
2.40 |
2.20 |
2.17 |
2.15 |
|
| Cold Crushing Strength (MPa) |
50 |
65 |
70 |
40 |
35 |
30 |
|
| Apparent Porosity(%) |
17 |
14 |
12 |
23 |
24 |
26 |
|
| Permanent linear change @1400ºC*2hrs(%) |
±0.1~-0.2 |
±0.1~-0.2 |
±0.1~-0.2 |
±0.3 |
±0.5 |
±0.5 |
|
| Thermal Linear expansion @1000ºC |
0.6 |
0.6 |
0.5 |
0.6 |
0.6 |
0.6 |
|
| Refractoriness under Load (ºC)@0.2MPa |
1430 |
1470 |
1500 |
1350 |
1300 |
1250 |
|
| Chemical Analysis (%) | Al2O3 |
42 |
45 |
46 |
42 |
38 |
35 |
| Fe2O3 |
1.7 |
1.5 |
1.3 |
2.0 |
2.2 |
3.0 |
|
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