Low Porosity Fireclay Brick

Low Porosity Fireclay Brick

Apparent porosity:≤10%
Bulk density: ≥2.40g/cm3
Cold crushing strength: 70Mpa
Refractoriness under load(0.2Mpa): 1520°C
Creep rate(0.2Mpa 1200°C x50hs) :≤0.1%
Description

Low Porosity Fireclay Brick: 

Low-porosity clay bricks are typical clay refractory products. Low-porosity clay bricks have better high-temperature volume stability, lower creep rate and better wear resistance. The raw materials of low-porosity clay bricks include sapphire aggregate, light and soft clay binder, and auxiliary materials (kyanite , Sillimanite, andalusite) and additives, etc., after reasonable classification, the raw materials are fully mixed, then formed under high pressure, and sintered at 1400 ℃ high temperature conditions. The raw materials for the production of low-porosity clay bricks should require a compact structure, high purity, and few impurities.

Scope of application:

Low-porosity clay bricks are widely used in large-scale blast furnace supporting hot blast stoves

Mainly used in the middle and lower lattices and support arches of the regenerators of hot blast stoves.

In addition, various high-temperature industrial kilns such as lime kiln high-temperature zone firing zone

Glass kiln regenerator, etc.

 

Advantage:

High load softening temperature

Excellent thermal shock resistance

Good volume stability

Low porosity

Good mechanical strength

Good wear resistance

Resistance to penetration

Acid resistance and slag corrosion resistance.

Technical Data:

Item

Three low clay brick

Lower porosity brick

Common clay brick

 

 

DDD

DN-12

DN-15

N-1

N-2a

Al2O3°≥

%

46

45

42

-

-

Fe2O3

%

1.1

1.2

1.5

-

-

Apparent porosity≤

%

10

12

15

22

24

Bulk density≥

g/cm3

2.40

2.37

2.30

2.15

2.10

Cold crushing strength

Mpa

70

68

60

30

30

Reheating linear change

%

-

+0.05

-0.1

+0

-0.2

+0.1

-0.5

+0.1

-0.5

Refractoriness under load(0.2Mpa)

°C

1520

1500

1470

1400

1370

Creep rate(0.2Mpa 1200°C x50hs) ≤

%

0.1

-

-

-

-

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