What this equipment does
Dust suppression equipment controls coal dust at the point of generation — transfer chutes, screen feeds, crusher discharge, stockpile working faces, and load-out spouts. Systems include wet spray (water-only or water-plus-surfactant), dry fog (atomized water producing very small droplets), and chemical wet suppressants. Dust suppression complements, rather than replaces, mine ventilation and dust extraction.
At a Glance
- Equipment Type
- Dust suppression system
- Material Handled
- Coal dust, fugitive emissions
- Capacity Range
- Sized to transfer point or area
Common Applications
- Coal transfer points
- Crusher discharge
- Stockpile spraying
- Load-out spouts
- Haul roads
Technical Specifications
| Specification | Value | Unit |
|---|---|---|
| System Types | Wet spray, dry fog, chemical | |
| Droplet Size | 20–500 | µm |
| Water Pressure | 5–70 | bar |
| Air Pressure (dry fog) | 4–7 | bar |
| Control | Manual or interlocked with conveyor |
Selection Factors
- Source mechanism (transfer, crushing, stockpile, vehicle traffic)
- Moisture sensitivity of downstream product
- Water and compressed air availability
- Surfactant or chemical compatibility
- Freezing risk in cold climates
Maintenance and Wear Notes
Spray nozzles are the primary wear and blockage point and require routine cleaning. Filter elements upstream of the nozzles are essential. Dry fog systems also require routine compressor maintenance.