Angola’s mining and quarrying industry, including gravel pit operations, often requires dust suppression solutions like mist sprayers to control airborne particles generated during crushing, screening, and material handling. Here’s a tailored overview of mist sprayers for gravel pit crushers in Angola:
1. Why Use Mist Sprayers in Gravel Pits?
– Dust Control: Reduces silica and other harmful particulates.
– Compliance: Meets environmental and occupational health regulations.
– Equipment Protection: Minimizes wear on crushers and conveyors.
– Visibility/Safety: Improves working conditions for operators.
2. Types of Mist Sprayers for Crushers
– High-Pressure Fog Systems: Fine droplets (10–50 microns) suppress dust without soaking material.
– Ring Sprayers: Mounted around crusher inlets/outlets or conveyor transfer points.
– Nozzle Arrays: Positioned near screening decks or loading zones.
– Mobile Units: Portable systems for flexible deployment in remote pits.
3. Key Suppliers & Solutions in Angola
– Local Distributors:
– Companies like HENFIL (Angola) or MistAfrica may offer dust control equipment.
– Check with Luanda-based industrial suppliers (e.g., Grupo Urbinveste).
– International Brands:
– Dust-A-Side (South Africa): Specializes in mining dust suppression.
– Nederman MikroPul: Provides modular fog systems.
– BETE Fog Nozzles or Spraying Systems Co.: High-quality nozzles for crushers.
4. Considerations for Angola
– Water Availability: Ensure reliable water supply (tanks/pumps may be needed).
– Climate Adaptations: High temperatures may require corrosion-resistant materials.
– Maintenance: Opt for systems with easy-to-clean nozzles (hard water is common).
– Power Sources: Solar-powered options suit off-grid sites.
5. Installation Tips
– Target dust “hotspots” (crusher jaws, conveyor drops).
– Use anti-clog nozzles for Angola’s dusty conditions.
– Pair with wind barriers if needed.
6. Regulations & Standards
– Angolan mines must comply with *Decree 31/21* (Environmental Impact