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What is Dry Fog Dust Suppression?

Dry fog is a dust control technology that uses compressed air and water to create an extremely fine mist of droplets — typically 1 to 15 microns in size.


These droplets are so small they appear as a light fog rather than a spray. Because they are similar in size to airborne dust particles, they collide and bond with dust in the air, causing it to fall harmlessly out of suspension.


The result:

  • Dust is controlled at its source.
  • Material and equipment remain dry.
  • Workers and communities benefit from cleaner, safer air.

How Dry Fog Works

At the heart of the system are dual-fluid nozzles. Compressed air accelerated to ultrasonic velocities shears water into an ultra-fine stream of droplets as they leave the nozzle which achieves airborne dust control.


  • This process atomises the water into ultra-fine droplets (1–15 μm).
  • Droplets are projected into dust-laden air at transfer points, crushers, or bins.
  • Dust particles and droplets agglomerate, becoming too heavy to remain airborne.

Because the fog is so fine, it adds negligible moisture to material flow, making it ideal for bulk material handling dust control where product quality matters.

Internals of a dry fog nozzle and the agglomeration effect on dust

Internals of a dry fog nozzle an

Why Dry Fog is Better for Dust Control

Water Efficient

Significant reduction in water usage compared to conventional dust suppression.

Effective Dust Control

The generated water based fog is effective at removing respirable dust particles in the PM10 and PM2.5 range.

Comprehensive Coverage

With the way fog flows, it reaches areas where traditional water sprays cannot reach.

Environmentally Friendly

Non-toxic using only water. Safe for workers and the surrounding environment.

Low Maintenance

Nozzles are not complex and the entire system runs only on water and compressed air.

Flexible deployment

Ideal for mining, quarrying, construction, grain, ports and general bulk material handling.

Dry Fog vs. Misting vs. Spraying

What's the Difference?

Feature
Dry FogHigh Pressure MistingConventional Spraying
Typical Droplet Size1 to 15µm50 to 200µm200µm to 1mm+
Effective on Respirable
Dust (<10µm)		✔ Yes - matched droplet
size ensures agglomeration		✖ Limited - droplets too large
to capture fine dust		✖ Ineffective - droplets far
larger than target dust size
Moisture Added to
Material		Negligible (<0.1% by weight)Moderate - can wet surfacesHigh - often causes product
wetting or flow problems
Water ConsumptionVery LowModerateHigh
ApplicationsTransfer points, hoppers,
crushers, screens		Open areas, cooling,
humidification		Stockpile wetting, large-
area dust knockdown
System RequirementsCompressed air &
low pressure water		High-pressure water pumpsMains pressure water
Key AdvantageControls respirable dust
without wetting material		Knockdown of visible dust in
open air		Simple, inexpensive bulk
dust suppression

If the droplets are too large, they won't interact with fine airborne dust. True dry fog systems are engineered to create micron-sized droplets that target the PM2.5 & PM10 dust particles which are most harmful to health and the environment

Droplet size comparison dust particles flow around large droplets and agglomerate on small droplets

Applications of Dry Fog

Dry Fog dust suppression is effective anywhere dust becomes airborne during handling or processing, including:

  • Mining and quarrying operations
  • Bulk material handling and storage
  • Storage bins & silos
  • Construction sites
  • Recycling and waste management facilities
  • Ports and shipping yards
  • and many more!

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Why choose us?

Because we can solve your industrial dust or hazardous waste issue!

Local Presence

We service clients Australia-wide from our offices in Sydney & Adelaide and our extensive network across the country.

Turn Key Capabilities

With the support of our OEM partners and our local presence we can deliver a full turn-key project consisting of:
Design » Construct » Install » Commission » Service

Safety & Compliance

Our team has extensive experience in Engineering, Project Management and the full scope site services for successful and safe project completion. 

Get in touch  +61 431 267 315 

Get in touch

If you have an industrial dust or hazardous waste issue which you would like to address, please give us a call or send a message and we will contact you within 24 hours.