Stone Dust

Stone Dust

Description:

• Fine, dry powder ranging in color from white (limestone) to gray (granite) to black (basalt).
• Particle size can vary considerably, but is generally less than 5 millimeters in diameter.
• May have a sharp, gritty texture.

Uses:

• Construction:
  • As a mineral filler in concrete and asphalt to improve strength, workability, and reduce cracking.
  • In some cases, as a base material for flooring or landscaping applications.
• Manufacturing:
  • As a filler in some plastics and rubber products.
  • In abrasive blasting for cleaning or surface preparation (due to its sharp edges).
  • As a raw material for some agricultural lime products (depending on the source rock).

Chemical Composition:

• The chemical composition of stone dust directly reflects the rock it originates from.
• Common minerals found in stone dust include:
  • Quartz (SiO2)
  • Calcite (CaCO3)
  • Feldspar (KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
  • Mica (KAl2(AlSi3O10)(OH)2)
  • Depending on the rock source, it may also contain trace amounts of other minerals.

Physical Properties:

• Density: Varies depending on the source rock, typically between 1500-3000 kg/m3.
• Solubility in Water: Generally insoluble in water.
• Melting Point: Varies depending on the dominant mineral composition (e.g., quartz melts at 1713°C).
• Boiling Point: Not applicable, as stone dust decomposes before reaching boiling point.

Safety Information:

• Stone dust can irritate the skin, eyes, and respiratory system, especially when inhaled.
• Wear gloves, eye protection, and a dust mask when handling stone dust.
• Prolonged or repeated exposure to stone dust may increase the risk of respiratory illnesses like silicosis (depending on the mineral composition).
• Wetting down stone dust can help reduce dust generation.

Additional Information:

• The specific properties and safety considerations for stone dust can vary depending on the source rock.
• It’s important to consult the Safety Data Sheet (SDS) for the specific type of stone dust you are working with for detailed safety information.
• In some cases, stone dust may contain trace amounts of hazardous materials depending on the source rock and processing methods.