Dust Prevention and Suppression

All solutions in the videos and pictures have been conseptualised, designed, manufactured and installed by Christo Keyser, Owner of Misting SA.

Suppress dust and keep the regulators at bay by using Misting SA's dust suppression technology. It simply pushes filtered, pressurised water through customized nozzles and this adheres to PM10 dust particles. In addition you can combine this system with odour control to avoid any malodours that could cause issues with neighbours. Misting SA offers complete customisation solutions.

Dust Suppression

Misting is an extremely effective method of dust suppression, dust abatement, and dust prevention at the source. Dosing with an environmentally safe chemical, increases the surface tension of the water which gives better dust control and reduces water usage.

When properly designed and installed, the Misting System produces a high concentration of 1-10 micron fog droplets. These size water droplets provide optimum performance for attraction and suppression of PM 10 and smaller dust particles. The systems can effectively remove breathable and fugitive dust suppression from .1 to 1000 microns. Dust surrounded by dense fog has little chance to escape.

A dosing pump adds the dust suppression agent to the water as it passes through it, and is transferred with a high pressure pump at 70 bar to a series of engineered nozzles on a stainless steel, or nylon tubing pipe network. This system delivers a fine spray via strategically placed nozzles. The droplets amalgamate with the fugitive dust to form a heavier droplet that drops down. The system adds just enough water to the area without over wetting to ensure the elimination of fugitive dust.
The system can be installed outside on the perimeter of the problem area or inside.

Finding the best dust control solution for your operation depends on many factors:

  • Material producing the dust (coal, ore etc)
  • Mining or processing operation generating the dust
  • Location of the operation generating the dust
  • Available infrastructure and resources ( electricity, water, labour etc.)

Variables considering when proposing solutions

  • Particle size of the fugitive dust
  • Size of the droplet of water
  • Pattern that the spray nozzle forms
  • Operating pressure
  • Surface wetting
  • Placement of nozzles
  • Quality of water
  • Options of control mechanisms

How does it work

With the use of Misting SA’s series of speciality MIST nozzles placed in a line around the perimeter of an area, or by using specially designed MISTING rings, attached to box / oscillating fans. When connected to a high pressure MISTING system pump, water is forced through the specialty nozzles and quickly atomized to droplets as small as (5 microns).The system draws its water supply from the mains water scheme or from an accompanying tank – which allows for greater flexibility.

Dust suppression on mining vehicles

We have successfully installed misting on moving vehicles like Bomags. This system has been designed to mist areas around the Bomag on landfills. The 24 Volt pump (1 litre per minute) will disperse mist through stainless steel tubing and a 0.3 nozzle orifice to leave a thin layer of mist on soil. Water and enzymes are drawn out of a 500 liter tank that are mounted on top of the Bomag, secured with brackets.

Key advantages of a High Pressure Fog/Misting Systems

  • Billions of micro-sized droplets drastically increase the surface coverage of the system
  • Due to smaller droplet sizes (1-10 microns) water consumption is largely reduced in comparison to larger droplet sizes.
  • A significant evaporative cooling effect can be noticed due to evaporation of micro droplets. Air temperatures can be reduced by 5°C to 12°C Systems consume marginal amounts of electricity, especially when compared to low pressure systems.
  • Systems are low maintenance and easily serviced.

Applications for Dust Suppression

  • Asbestos Abatement
  • Coal Dust Suppression,
  • Quarries and Rock Crushing Equipment,
  • Grain Silos,
  • Slag Works,
  • Conveyor Belt drop points
  • Construction and Land Development Sites
  • Mines

What components are needed for a misting system?

The required components for a misting system includes
Misting SA High pressure tubing (Nylon, Stainless steel or Copper)
Misting SA misting nozzles
Misting SA misting spray body
Misting SA Filtration Housing and cartridge
Misting SA Pressure Switch
Misting SA Solenoid Valves (low and high pressure)
Misting SA Anti drip valve
Misting SA high pressure misting pumps (various flow rates)
Misting SA Humidity and temperature controllers * Optional
Misting SA ventilation equipment. * Optional

* Additional components (such as wall mounted fans, extractor fans, Humidity and Temperature) may be required for custom designed solutions.

misting sa mine dust prevention


Railer tip
Railer tip
Control system
Control system
Conveyor Tip point
Conveyor Tip point

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Contact Details

Nr 10 B Julian Way,
Somerset West Business Park
South Africa

Enquiries and Quotes

Sylvia Keyser
+27 82 925 2012

Technical Enquiries

Christo Keyser
+27 82 412 1255


+27 21 852 6192

Pretoria Branch

Contact person: George
+27 12 807 1499
By appointment only


CPT Branch

PTA Branch

(by appointment only)