Fire clay bricks

Fire clay bricks
Fire clay bricks
Fire clay bricks
Fire clay bricks
Overview

Apparent Porosity% ≤: 22

Bulk Density g/cm3 ≥: 2.15

Cold Crushing Strength Mpa ≥: 30

0.2Mpa Refractoriness Under Load T0.6 ℃ ≥: 1400

Reheating Linear Change(%): +0.1- -0.4

Feature

Description

Fire clay refractory brick with super-low thermal conductivity add foaming agent and stabilizing agent into the slurry confected by some refractory raw materials, such as alumina powder, refractory clay and cyanite. After mixing them, the refractory slurry evenly adsorbs around the foams, and spherical proes are formed after being dried and fired. The six faces are all cut by machine so that the sizes are accurate.

Applications

Clay bricks are mainly used in the low temperature parts, including blast furnaces and hot blast furnaces, waste incinerators and glass melting furnaces. Due to the scale-up of a variety of industrial furnaces and severity of operating conditions, super dense clay bricks that made of more refined chamotte being calcinated at high temperature are applied more than before.

It's popular in the following furnaces:

1. Blast furnaces and hot blast furnaces

2. Waste incinerators

3. Glass melting furnaces


The main applications are:

1. Blast furnaces and hot blast furnaces

2. Waste incinerators and glass melting furnaces.

Specifications

1. Low permanent linear change on reheating

2. High dense structure

3. Good Thermal Shock Stability

Advantages

1. Good wear-resistance;

2. Corrosion-resistant;

3. Various shapes

4. High quality;

Item N-1 N-2a N-2b N-3a N-3b N-4 N-5 N-6
Refractoriness SK 31 30 30 29 29 28 27 23
  1750 1730 1730 1710 1710 1690 1670 1580
Chemical
composition
Al2O3 ≥ 40 39 34 34 32 32 31 31
  Fe2O3 ≤ 2.1 2.1 2.3 2.3 2.5 2.5 2.5 2.5
Apparent Porosity%  ≤ 22 24 26 24 26 24 26 28
Bulk Density g/cm3    ≥ 2.15 2.10 2.10 2.05 2.05 2.05 2.00 2.00
Cold Crushing
Strength Mpa  ≥
30 25 20 20 15 20 15 15
0.2Mpa Refractoriness 
Under Load T0.6 ℃ ≥
1400 1350 1350 1320 1320 1300 1300 1300
Reheating 
Linear 
Change(%)
1400℃
 2hour
+0.1
- -0.4
+0.1
- -0.5
+0.2
- -0.5
         
  1350℃
 2hour
      +0.2
- -0.5
+0.2
- -0.5
+0.2
- -0.5
+0.2
- -0.5
 

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