Best Chem uses a foam material, the bubbles or which are 50-100 microns in diameter pumped through small bore pipes to foam nozzles where it is discharged for mixing with the material to be dust suppressed.
If the foam comes into contact with a larger particle its surface will be wetted and the foam will be substantially unaffected. Dust particles which are comparable in size to the foam bubbles will penetrate the bubbles. This breaks the bubble and wets the dust particle which will adhere to the moistened surface of the larger particles.
By using the Best Chem system it becomes possible to coat small dust particles selectively in a bulk material with a small amount of water, without saturating everything, such as larger particles and the surrounding machinery as can happen with water sprays.
Typically dust suppression can be achieved using only 2 litres of water per tonne of bulk material.
