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Calcined Clay 30/80

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Calcined clay is a naturally occurring clay that undergoes calcination, a thermal treatment process at high temperatures, typically between 900°C and 1000°C. This process alters its physical and chemical properties, enhancing its utility in various industrial applications.

Specifications

The 30/80 designation indicates the particle size distribution of the calcined clay:

  • 30 Mesh: Particles that can pass through a 30-mesh sieve (0.595 mm opening).

  • 80 Mesh: Particles that are retained on an 80-mesh sieve (0.177 mm opening).

Physical and Chemical Properties

Physical Properties

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  1. Particle Size: 0.177 mm - 0.595 mm

  2. Bulk Density: Approximately 55-60 lb/ft³ (880-960 kg/m³)

  3. Color: Light brown to white

  4. Shape: Angular particles

  5. Hardness: High hardness due to calcination, improving abrasion resistance

Chemical Composition

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  1. Silicon Dioxide (SiO2): 50-60%

  2. Aluminum Oxide (Al2O3): 20-30%

  3. Iron Oxide (Fe2O3): 2-5%

  4. Calcium Oxide (CaO): 0.5-2%

  5. Magnesium Oxide (MgO): 0.5-2%

  6. Potassium Oxide (K2O): 1-2%

  7. Sodium Oxide (Na2O): 0.1-1%

  8. Titanium Dioxide (TiO2): 1-2%

Applications

  • Oil and Gas Industry

  • Construction

  • Ceramics

  • Refractory Products:

  • Agriculture

  • Sports Turf and Landscaping

Conclusion

Calcined clay 30/80 is a highly versatile material with a wide range of applications across various industries due to its enhanced physical and chemical properties following calcination. Its smaller particle size, combined with its ability to withstand high temperatures, improved hardness, and porosity, makes it particularly valuable in demanding applications such as hydraulic fracturing and fine ceramics manufacturing. Proper handling and storage are essential to maintain its quality and performance.

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