What is the usage method of crust dust suppressant?

What is the usage method of crust dust suppressant? What is the usage method of crust dust suppressant?

1、 Core role and advantages

1. ‌Long term dust suppression‌
   After spraying dust suppressants, a breathable but tough "protective film" can be formed on the road surface, which aggregates and fixes small dust particles, significantly reducing secondary dust caused by vehicle driving or wind. The dust suppression effect can last for several days to weeks, far superior to traditional watering methods.

2. ‌moisturizing and hydrating‌
   Containing hygroscopic components such as calcium chloride and polyols, it can continuously absorb moisture from the air, keep the road surface moist, slow down water evaporation, and is especially suitable for use in arid and high-temperature areas.

3. ‌Environmental Safety‌
   Most products use biodegradable polymer or plant-based ingredients, which are non-toxic, non corrosive, and do not harm vegetation. They are friendly to humans, animals, and the environment, and meet the requirements of green construction.

4. ‌Water and energy conservation‌
   Compared to frequent watering, dust suppressants can significantly reduce water usage, decrease operation frequency, save labor and equipment costs, and avoid safety hazards caused by road waterlogging or winter icing.

2、 Main components and types

According to the mechanism of action and differences in composition, road moisturizing and dust suppressants can be divided into the following categories:

• ‌Inorganic salts (quick hygroscopic type)

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  Ingredients: Calcium chloride (CaCl ₂), (MgSO ₄), etc.
  Characteristics: Strong moisture absorption, fast onset, suitable for temporary roads or emergency dust suppression, but with a short duration (several hours to several days), long-term use may have slight corrosiveness to metals.

• 

• ‌Polymer class (long-lasting dust fixing type)‌
  Ingredients: Polyacrylamide (PAM), Carboxymethyl Cellulose (CMC), Sodium Polyacrylate, etc.
  Characteristics: When in contact with water, it forms a viscous colloid that wraps around dust and forms a film. It is resistant to rolling and wind erosion, and its dust suppression effect can last for several weeks. It is widely used in mines, dirt roads, and urban roads.

• ‌Biological/plant-based (environmentally friendly and biodegradable)‌
  Ingredients: Sodium alginate, guar gum, starch, lignosulfonate, etc.
  Characteristics: Natural source, fully biodegradable, suitable for ecologically sensitive areas or agricultural roads, but relatively weak resistance to rainwater erosion.

• ‌Composite type (multifunctional integration)‌
  Ingredients: Combining inorganic salts+polymers+plant fibers or nanomaterials.
  Features: It combines rapid moisture absorption, strong adhesion, and long-lasting moisturizing functions, adapting to complex climates and high traffic roads, and is currently the mainstream direction of research and application.

3、 Applicable scenarios

• Urban main roads and unpaved roads

• Entrance and exit of construction site and earthwork stacking area

• Mining and coal transportation dedicated roads

• Demolition site, material yard, exposed land

• Areas with frequent droughts and sandstorms and ecological restoration projects

4、 Usage method

1. ‌Dilution ratioGenerally, it is mixed with water in a ratio of 1:30-1:200 (according to the product instructions), stirred evenly to prevent clumping.

2. ‌Spray method: It can be evenly sprayed by sanitation sprinkler, air spray or professional spraying equipment.

3. ‌Usage referenceSpray 0.5-3 liters of diluent per square meter, adjusted according to the degree of dust and climate.

4. ‌Timing of supplementary sprayingWhen the film layer fails due to heavy rainfall or continuous drying, it needs to be re sprayed.