Once dust is airborne then a misting based solution is most practical approach.
For small scale applications then misting nozzles can be used. Oasis offers two types of misting nozzles to suit different applications
- Hydraulic Atomizing Misting Nozzles are the most common misting nozzles. They require a well filtered high pressure (10-20bar) water supply. They can also be supplied as cluster nozzles where large amounts of mist are required ;
- Air Assisted Atomizing Nozzles are a newer approach and use a combination of water (2-5 bars) and compressed air (2-5 bar) to make a fine mist. These nozzles have a smaller droplet size which improves dust suppression performance and a large mist cloud. They also only require low pressure water, but they require a supply of compressed air.
For large scale applications then a Fog Cannon is the most practical solution. Pointing one of the smaller Fog Cannons directly where the high concentration dust is being generated is a very successful approach.
To improve the performance of misting dust suppression an ionic wetting agent can be added to the water. The ionic element can be selected to improve the attraction between the dust and water particles and the wetting agent increases the likelihood of the water and dust particles combining.