Description of acid-resistant bricks
Acid-resistant brick is a corrosion- and acid-resistant material formed by high-temperature calcination using quartz, feldspar and clay as the main raw materials.
Marking of acid-resistant bricks
Acid-resistant bricks come in straight, wedge, radial, and shaped.
KP - straight brick (230x113x65 mm)
CT - double-sided wedge brick (230x113x65x55 mm)
CR - wedge ribbed double-sided brick (230x113x65x55 mm)
Characteristics of acid-resistant bricks
| Name of indicator | Value for bricks | ||
|---|---|---|---|
| Class A | Class B | Class B | |
| Acid resistance, % not less than | 97,5 | 97,5 | 96 |
| Compressive strength MPa (kg/cm2), not less than | 55 (550) | 50 (500) | 35 (350) |
| Water absorption, % max. | 6 | 6,8 | 8 |
| Water permeability (there should be no drops on the back side), hour | 48 | 36 | 24 |
| Heat resistance, heat change | 3 | 3 | 2 |
Chemical composition of acid-resistant bricks
| Indicator name | Significance |
|---|---|
| SiO2, % | 55-65 |
| Al2O3, % | 20-40 |
| FeO, % | 3,5 |
| CaO, % | 2 |
Advantages of acid-resistant bricks
Acid-resistant bricks can withstand the erosion of various strong acids, strong alkalis and other corrosive environments.
Acid-resistant bricks have a higher compressive strength than conventional bricks and can support more weight and pressure.
Acid-resistant bricks are harder and more abrasion-resistant than ordinary bricks and can resist physical wear and tear and impact.
Acid-resistant bricks can maintain structural integrity and performance in high temperature environments.
Acid-resistant bricks do not emit harmful gases, do not burn or explode at high temperatures and pressures, so they work well from a safety standpoint.
Acid-resistant bricks have high chemical stability and mechanical strength and can be used for a long time without damage.
Application of acid-resistant bricks
Acid resistant bricks are widely used in the chemical industry, such as in the construction of acid wash tanks, reactors, evaporators, storage tanks and other equipment and locations.
Acid-resistant bricks can be used for the construction of flue gas desulphurization towers, chimneys, combustion chambers and other equipment in the energy industry.
Acid resistant bricks can be used to construct distillation columns, storage tanks, reactors and other equipment in the petrochemical industry.
Acid-resistant bricks are also used in the metallurgical industry, such as for the construction of blast furnaces, converters, ladles and other equipment.
Acid resistant bricks can be used to construct sewage treatment plants, sewage canals and other places with acidic wastewater.
Acid-resistant bricks are also used in special construction applications such as bridges and tunnels in acidic soil environments.
Kerui Refractory Product Certification
Kerui Refractory implements strict product quality control and quality inspection system. Kerui Refractory has many certificates such as ISO, CE and SGS etc. Our products such as refractory brick, thermal insulation material, refractory mixture for injection molding and so on meet international standards and requirements for quality, safety and performance. Kerui products are trustworthy.
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