Introduction

Uncontrolled dust is a major environmental, health, and operational challenge across mining and industrial sites. Fog Curtains create a consistent barrier of micro-droplets engineered to match the particle size of airborne dust, ensuring maximum collision efficiency. Our high-pressure systems use advanced nozzles and industrial pumps to generate 5–80 micron droplets — the ideal size to bind both PM10 and PM2.5 particles.

Why fog curtains are effective

Fog curtains work on the principle of droplet-to-particle collision efficiency. When droplets are equal or smaller than the dust particle size, the chance of interception increases dramatically.

• Captures both visible dust and ultra-fine respirable particles
• Prevents dust from escaping conveyors and transfer points
• Reduces wind-driven dust at loading and offloading points
• Eliminates dust clouds that reduce visibility and safety
• Low water consumption — micro-droplets do NOT wet the product or machinery
• Suitable for underground and surface operations

Where fog curtains are used

• Transfer points
• Conveyor discharge points
• Hopper and chute drops
• ROM tip bins
• Crusher inlets and outlets
• Screens and sorting areas
• Stockpile perimeters
• Silos, bagging, loading and offloading
• Indoor processing plants

If a dust plume forms in a linear area — a curtain is the correct solution.

How the system works

Fog Curtains use:

• High-pressure pumps (70–100 bar)
• Precision stainless-steel nozzles (0.15–1.0 mm)
• Industrial-grade stainless-steel misting lines
• Optional solenoids, PLC interfacing, and automated controls

The system produces a thin, dense "fog wall" across the dust source. When dust hits the fog wall, droplets bond instantly and fall out of suspension. Micro-droplet fog captures dust without wetting material, machinery, or surrounding area.

Technical specifications

Key advantages

• Extremely low water usage
• Does not wet the product
• Fully modular — extend or modify easily
• Handles extreme dust conditions
• High uptime, low maintenance
• Compatible with master/slave systems, automated solenoids, and PLC/SCADA-based control

Optional add-ons

• Automated on/off via conveyor interlock, motion sensors, dust sensors, wind sensors
• Solenoid-driven zone control
• Remote control and site interfacing
• Filtration upgrades
• Pump redundancy systems
• Chemical dosing (for severe dust loads)

Why choose Misting SA

With more than 20 years of engineering, installation, and high-pressure misting experience, we supply systems proven across some of the harshest mining sites in Southern Africa.

• Durable
• Scalable
• Energy efficient
• Custom-built for African mining conditions

Every system is designed based on the client's dust load, available water, airflow environment, nozzle count, and pump requirements.