Silica Dioxide

SILICA DIOXIDE

Molecular formula: SiO₂

Synonims: Quartz, Silicic oxide, Crystalline silica flour, Silicon dioxide flour, Quartzite, Pure Silica

Silicon dioxide is an oxide of silicon, most commonly found in nature as quartz and in various living organisms. Silica is the major constituent of sand and is poorly soluble. Is one of the most complex and most abundant families of materials, existing as a compound of several minerals and as synthetic product.

Inhaling finely divided crystalline silica is toxic and can lead to severe inflammation of the lung tissue, silicosis, bronchitis, lung cancer, and systemic autoimmune diseases, such as lupus and rheumatoid arthritis. Inhalation of amorphous silicon dioxide, in high doses, leads to non-permanent short-term inflammation, where all effects heal.

USES:

• 1. Industrial Uses

  • Foundry Operations: Integral in molds and cores for metal casting, valued for its thermal stability and precision in maintaining shapes under high heat.
  • Abrasive Materials: Applied in products like polishes, sandpapers, and cleaning agents, appreciated for its hardness and fine granularity.

  2. Construction Applications

  • Concrete and Cement Additive: Functions as a filler, boosting the strength, longevity, and workability of concrete and specialized cement blends.
  • Grouts and Mortars: Enhances density and mitigates shrinkage in construction mixtures.

  3. Glass and Ceramic Production

  • Glassmaking: Essential raw ingredient for creating diverse glass types, such as flat, container, and specialty glasses.
  • Ceramics and Refractory Products: Contributes to the manufacture of tiles, bricks, and other ceramics by increasing heat resistance and durability.

  4. Coatings and Paints

  • Filler and Modifier: Silica flour enhances paint durability, weather resistance, and texture, while also regulating viscosity and providing a smooth application finish.

  5. Rubber and Plastic Industries

  • Strengthening Additive: Incorporated into rubber and plastic products to boost mechanical performance, including tensile strength and resistance to wear.

  6. Oil and Gas Sector

  • Drilling Applications: Acts as a densifying agent in drilling fluids to manage pressure and stabilize boreholes.
  • Well Cementing: Improves the strength and stability of cement in high-temperature oil and gas environments.

  7. Chemical Applications

  • Catalyst Carrier: Offers a stable and inert base for catalysts in various chemical processes.

Silica Dioxide: technical grade