Sandblasting Non-metallic abrasives Suppliers

What are the common types of Sandblasting Non-metallic abrasives?
Non-metallic abrasives used in sandblasting come in various forms, each with its own characteristics and applications.
Silica Sand:
Silica sand is one of the most traditional and widely used non-metallic abrasives. It is effective for general purpose cleaning and surface preparation.However, concerns about silicosis, a respiratory disease caused by inhaling silica dust, have led to increased use of alternative abrasives.
Glass Beads:
Glass beads are spherical in shape and are often used for cleaning and peening surfaces.They produce a smoother finish compared to some other abrasives.Glass beads are commonly used for applications where surface aesthetics are crucial.
Crushed Glass:
Crushed glass abrasives are made from recycled glass and are available in various grit sizes.They are environmentally friendly and can be used for removing coatings and contaminants from surfaces.
Walnut Shells:
Crushed walnut shells are organic and biodegradable abrasives.They are commonly used for gentle cleaning and polishing without damaging the substrate.Walnut shells are suitable for applications where a softer abrasive is required.
Corn Cob Grit:
Corn cob grit is another organic and biodegradable abrasive option.
It is often used for cleaning and polishing surfaces without causing damage.Corn cob grit is suitable for applications where a softer abrasive is preferred.
Aluminum Oxide:
While aluminum oxide is a metallic compound, it is included here for its non-metallic abrasive applications.It is a versatile abrasive that is effective for surface preparation, cleaning, and finishing.
Aluminum oxide is available in various grit sizes.

How do Sandblasting Non-metallic abrasives contribute to airborne dust?
Non-metallic abrasives used in sandblasting, such as silica sand, glass beads, or crushed walnut shells, can contribute to airborne dust during the sandblasting process. The generation of airborne dust poses potential health and safety hazards to operators and those in the surrounding environment.
Abrasive Particle Size:
The size of non-metallic abrasive particles plays a significant role in the generation of airborne dust. Finer particles are more likely to become airborne and remain suspended in the air for longer periods.
Abrasive Velocity:
The velocity at which the abrasive particles are propelled during sandblasting affects their behavior. Higher velocities can result in greater fragmentation of abrasive particles, leading to the production of finer dust.
Abrasive Hardness:
The hardness of non-metallic abrasives influences their propensity to break into smaller particles during impact. Softer abrasives may break down more readily, generating finer dust.
Surface Contamination:
The surface being blasted may contain contaminants, coatings, or previously applied materials. The abrasive impact can dislodge these substances, contributing to the overall dust generation.
Blasting Pressure and Nozzle Design:
The pressure at which the abrasive is blasted and the design of the blasting nozzle can influence the force and impact of the abrasive on the target surface. Higher pressures or improper nozzle configurations can lead to increased dust production.
Ventilation and Containment:
Inadequate ventilation and containment systems can allow airborne dust to disperse into the surrounding area. Properly designed ventilation systems and containment enclosures help control and capture dust, protecting both operators and the environment.
Particle Rebound:
Some abrasive particles may rebound off the target surface during impact, becoming airborne in the process. This rebound effect can contribute to the dispersion of dust.
Moisture Content:
The moisture content of non-metallic abrasives can affect their behavior during sandblasting. Drier abrasives may generate more dust than those with higher moisture content.