Jun 30, 2021
Acid Resistant Bricks
The Properties of Acid Resistant Brick
1. Can form corrosion resistant material during production.
2. Good acid and alkali corrosion resistance.
3. Low water absorption rate.
4. Good oxidization resistance at room temperature.
Acid Resistant Brick Physicochemical Index
| Item | Index |
| SiO2 | 69.8% |
| Al2O3 | 22.5% |
| K2O | 2.7% |
| Na2O | 0.95% |
| CaO | 0.82% |
| MgO | 0.12% |
| FeO | 0.49% |
| Acid fastness | 99.86 |
| Bulk density | 2.31~2.4g/cm3 |
| Water absorption | ≤2.0% |
| Modulus of rupture | ≥58.8Mpa |
| Crushing strength | ≥120Mpa |
Lightweight Acid Resistant Brick Physiochemical Indexes
| Index | Special acid-proof brick | Lightweight acid-proof brick |
| SiO2(%) ≥ | 65 | 65 |
| Bulk Density(g/m³) | 1.6-1.8 | 1.0-1.3 |
| Cold Crushing Strength(Mpa) ≥ | 15 | 10 |
| Thermal Conductivity(W/m.k) ≤ | 0.65 | 0.45 |
| Water Absorption(%) ≤ | 15 | working face 5 |
| Acid-proof rate(%) ≤ | 98 | 97 |
| Service temperature( ℃) ≤ | 1000 | 1000 |
The Application of Acid Resistant Bricks
Acid resistant bricks are widely used in petrol industry, chemical industry, metallurgy, power plant, chemical fiber, paper industry, pharmacy, fertilizer, food, galvanization factory, as well as acid tower, tank, bath, groove and other corrosion resistant projects. Acid resistant porcelain bricks are also used at sewage pipe and outdoor grounds.
Lightweight acid resistant bricks are mainly used at acidic atmosphere which suffers acidic gases corrosion, such as CFB boiler chimney, coking oven chimney and flue, etc. Lightweight acid resistant bricks should not contact with acidic liquid directly.
We specialize in refractory products for nearly 20 years, covering a full range of Graphite Electrode, High Alumina Bricks, Sillica Bricks, Fused AZS 33/36/41 Bricks, Mullite JM 23/26/28/30 Bricks, Magnesia Bricks, Magnesia Chrome Bricks, Magnesia Carbon Bricks, SiC Bricks, Dense and Light Weight Insulaing Castables and other related products for more sophisticated applications.
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