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Hauling Road Dust Suppressant

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Hauling road dust suppressants are dust control agents used on hauling roads - roads used by heavy vehicles such as mining trucks to transport materials (e.g. coal, ore, soil or sand).

Here's a more detailed explanation:


What is Hauling Road Dust Suppressant

Hauling road dust suppressant is a chemical or natural substance that is applied to the surface of mine roads to bind dust particles, thereby reducing flying dust caused by heavy vehicle activity. The objectives are:

  • Maintain air quality around the mine area.

  • Improve visibility for vehicle operators.

  • Reduce health problems (ARI, eye irritation, etc.) for workers and the surrounding community.

  • Extend the life of the mine road because the surface does not wear out as quickly due to loose dust.


Types of Dust Suppressants

Some common types:

  1. Water-based
    Simplest - just uses water to suppress dust. However, the effect is very temporary and requires repeated watering.

  2. Hygroscopic salt-based
    For example, calcium chloride (CaCl₂) or magnesium chloride (MgCl₂). These salts absorb moisture from the air, keeping the road moist for longer.

  3. Polymer-based or organic resins
    Examples include lignosulfonates, enzymatic binders, or synthetic polymers. Forms a bonding layer on the road surface making it more durable.

  4. Oil or bitumen based
    Forms a dust-proof layer, suitable for roads with heavy traffic, but can have an environmental impact if not managed properly.


Application Method

  • Usually applied with a water truck.

  • Dosage and frequency depend on soil type, traffic intensity and weather.

  • Some mines use a mixture of water and chemical dust suppressants for efficiency.


Environmental Aspects

The selection of dust suppressant must consider:

  • Toxicity to plants and animals.

  • Potential for ground or surface water pollution.

  • Biodegradability.

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