Description and Application of Acid-Resistant Refractory Brick
The primary component of the acid-resistant brick is silica, which, during firing at high temperatures, forms a significant quantity of mullite. This process yields a material that exhibits resistance to acid. The brick has a compact structure and low water absorption; consequently, it is suitable for use at ambient temperatures. It withstands all concentrations of alkaline media, though it is not designed for high-temperature applications. The brick consists of over 70% silica and is sintered. It is used in the chemical industry for acid grooves, acid wells, and acid storage units.
Specifications of Acid-Resistant Refractory Brick
Type
|
AR-35
|
AR-38
|
Maximum Operating Temperature
|
≥ 1200 °C
|
≥ 1250 °C
|
Al2O3
|
35%
|
38%
|
SiO2
|
62%
|
59%
|
Bulk Density
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≥ 2,20 g/cm3
|
≥ 2,20 g/cm3
|
Apparent Porosity
|
≤ 14%
|
≤ 16%
|
Cold Compressive Strength
|
≥ 600 kg/cm2
|
≥ 500 kg/cm2
|
Refractoriness under Load
|
1325 °C
|
1350 °C
|
Acid Resistance (Weight Loss)
|
≤ 2.5%
|
≤ 2.5%
|
Applications of Acid-Resistant Bricks
The aluminium-silicon acid-resistant brick is employed in acid channels, acid wells, acid storage units, and on floors with high acid exposure. These facilities are used in the petroleum, chemical, and pharmaceutical industries.
Packaging of Acid-Resistant Bricks
Our acid-resistant bricks are handled with care to minimise damage during storage and transport, thereby preserving the product quality in its original condition.
