Fireclay brick is made of clay clinker as aggregate and refractory clay as a binder. It is made by high-pressure molding and high-temperature firing. It is a refractory product with a wide range of usage. With good thermal shock resistance and chemical resistance, fireclay bricks are beneficially used as the lining of acid furnaces, and also used in high-temperature furnaces such as blast furnaces, hot blast stoves, glass furnaces, carbon baking furnaces and other thermal kilns.
Fireclay Brick for General Usage
Items | Specification | ||||
PN-42 | PN-40 | PN-35 | PN-30 | PN-25 | |
Al 2 O 3 % ≥ | 42 | 40 | 35 | 30 | 25 |
Fe 2 O 3 % ≤ | 2.0 | - | - | - | - |
Apparent porosity % ≤ | 20(22) | 24(26) | 26(28) | 23(25) | 21(23) |
Cold crushing strength Mpa ≥ | 45(35) | 35(30) | 30(25) | 30(25) | 30(25) |
0.2Mpa Refractoriness under load ºC ≥ | 1400 | 1350 | 1320 | 1300 | 1250 |
Permanent line change % |
1400
ºC×
2h
-0.4~0.1 |
1350
ºC×
2h
-0.4~0.1 |
1300
ºC×
2h
-0.4~0.1 |
1300
ºC×
2h
-0.4~0.1 |
1250
ºC×
2h
-0.4~0.1 |
N
Note:
()
The value in () is for the checker brick and special shaped bricks.
PN-42,PN-40,PN-35
,;
PN-30,PN-25
.
PN-42,-PN-40,PN-35 is for hot blast stove, coke oven and other thermal kilns; PN-35,PN-25 is for semi-silica bricks of coke oven and alkali-resistant bricks of general kilns.
Our total annual production capacity is about 100,000 tons of dense-shaped refractory product, and 100,000 tons of monolithic refractory product.
We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory.
We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.
Our Laboratory and R&D Center