Operational
Dusty environments cause continuous loss. Excessive dust results in:
- Loss of valuable product
- Equipment wear and abrasion
- Housekeeping challenges
- Reduced visibility and unsafe conditions
- Process inefficiencies
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Mining
Mining
Every mining operation is unique. With extensive field experience and application expertise, MikroPul delivers reliable, durable, and high-performance dust collection systems designed specifically for the realities of mining and mineral processing.
The pressure on modern mines
Modern mining challenges, turned into competitive strengths
Today's mines and quarries operate under combined operational, financial and regulatory pressure. Crushing, screening, conveying and loading continuously generate airborne particulate — and every gramme that leaves the process is product, profit and compliance lost.
Financial
Dust emissions hit profitability directly through:
- Product lost to the atmosphere
- Higher maintenance from abrasive dust
- Material-handling blockages and bridging
- Higher costs from inefficient system design
Regulatory
With residential developments closer than ever, tolerance for visible dust is low. Authorities expect:
- No visible dust emissions
- Controlled fallout beyond plant boundaries
- Defined air-quality and exposure limits
Recover Valuable Product
Why disciplined
investment matters
Budgetary constraints make it critical to invest correctly. It is generally better to execute selected areas properly than to under-design multiple areas and live with ongoing performance issues. Efficient dust control protects both the environment and the workforce.
| Parameter | Typical limit |
|---|---|
| Coarse particulate (ambient) | 35 µg/m³ |
| Fine particulate (ambient) | 15 µg/m³ |
| Total dust (workplace) | 15 mg/m³ |
| Respirable dust (workplace) | 5 mg/m³ |
| Crystalline silica (NIOSH PEL) | 0.05 mg/m³ |
~7 t/h
In a 700 TPH quarry, up to 1% of total throughput can be lost to the surrounding environment — roughly seven tonnes per hour from conveyors, crushers and screens, before stockpile losses.
In a 700 TPH quarry, up to 1% of total throughput can be lost to the surrounding environment — roughly seven tonnes per hour from conveyors, crushers and screens, before stockpile losses.
Emission hotspots across the process
Find the dust before it finds you
Effective dust control needs a systematic view of the whole operation. Rather than chasing isolated collectors, MikroPul identifies where dust is generated and applies targeted capture and filtration — handled as four connected stages.
Source capture
Collectors placed directly at emission points — crushers, screens, conveyor transfers, truck and rail dumps, bin vents and loading stations — engineered around airflow, material and layout.
Filtration
The optimal concept is chosen from dust loading, particle size, moisture, temperature and abrasiveness — setting filter media, air-to-cloth ratio, airflow and cleaning method for stable performance.
Dust handling & disposal
Collected dust is managed to avoid blockages, abrasion, secondary emissions and excessive maintenance — discharged via hoppers, screw conveyors or returned directly to process.
Safe clean-air discharge
Filtered air is discharged in compliance with environmental regulations while plant operations stay stable and predictable.
Typical emission hotspots
Rail & truck dump stations Crushers & screens Conveyor transfer points Ball mills & grinding circuits Bin & silo filling Product loading (rail, barge, truck) Autoclaves & process vessels
Choosing the right concept
Source or central dust collection
Mining dust control is built on one of two approaches. The right choice depends on plant layout, material handling, the value of recovered product and your operational philosophy — both deliver effective emission control when engineered correctly.
Source collection
Capture at each emission point
Collectors sit directly at crushers, transfers, screens or bin vents, capturing dust where it is generated and often returning recovered material straight to the process stream.
- Less ductwork and fewer discharge devices
- Lower capital cost, simpler design
- Maintain one collector without stopping the plant
- Ideal where recovered dust has product value
Central collection
A single, dedicated filtration stream
Multiple sources are ducted to one larger collector, treating several process points in a single filtration system with a centralized disposal concept.
- Simplifies plant-wide monitoring
- Preferred when dust can't return to product
- Suits centralised disposal requirements
- Needs careful airflow distribution design
Proven across a wide range of materials
Nederman MikroPul has extensive experience supplying dust control to mining and mineral processing operations handling:
Iron ore
Nickel
Copper
Gold
Silver
Lead & zinc
Bauxite & aluminium
Coal (incl. PRB)
Diamond
Potash
Molybdenum
Guidelines for practical dust control
Every mining operation is unique - good design isn't optional
Years of field experience in mining and quarry applications point to a handful of principles that separate a system that performs from one that disappoints.
Design and selection decide everything
Good design and proper equipment selection are essential. Marginal design decisions quickly result in inadequate collector performance that is difficult and costly to correct later.
Target the real dust sources
Conveyor transfer points, crushers, screens, oversized feed-outs and bin transfers are all significant dust sources. Capture is engineered where material is handled, not where it is convenient.
Spend the budget where it counts
Budget matters. It is better to execute targeted solutions correctly than to implement broad but ineffective systems across the whole plant and live with ongoing performance issues.
Build on deep process knowledge
A broad installation base across crushers, screens, ball mills, truck dumps, conveyor transfers, bin filling, product loading and autoclaves turns field experience into reliable, durable systems..
Core air pollution control equipment
A portfolio built for abrasive, high-load dust
The optimal technology is selected from the characteristics of the process dust and the operating environment. Five core collector families cover the range of mining and mineral-processing duties.
Mikro-Pulsaire® pulse-jet collectors
Versatile filtration for demanding dust loads
Engineered inlet technology distributes airflow evenly across the filter bags; periodic compressed-air pulse cleaning removes the dust cake and holds a stable pressure drop for continuous performance.
- High filtration efficiency
- Continuous operation, stable pressure drop
- Optimised airflow distribution, extended bag life
RAF reverse air filters
RAF II & RAF-IS — reliable cleaning without compressed air
Bags are cleaned sequentially using a reverse-air principle. The RAF II design gives continuous cleaning at a low pressure drop, reducing fan load and extending bag life. The RAF-IS variant is configured specifically for coal handling and combustible-dust applications.
- No compressed air required
- Low pressure drop, reduced fan power
- Proven for coal and combustible dust
Wet scrubbers
For sticky, humid or combustible atmospheres
Dust-laden gas contacts water or another scrubbing liquid so particles are captured and removed — well suited where dry filtration is difficult, and able to control certain gaseous pollutants at the same time.
- Effective for sticky, explosive or combustible dust
- Reliable in high-humidity processes
- Simultaneous dust and gaseous-pollutant removal
Cyclones
Robust coarse-particle pre-separation
Dust-laden gas enters tangentially; centrifugal force drops heavier particles into the hopper while cleaned air exits. Often used ahead of filtration to cut the dust load on downstream equipment.
- Effective pre-separation of coarse particles
- Reduces load on downstream filters
- Robust design, low maintenance
Cartridge collectors
Compact, high-efficiency capture for smaller airflows
Pleated cartridge elements deliver high filtration efficiency in a small footprint — well suited to space-constrained, localised dust collection with easy filter access and maintenance.
Total cost of ownership
A smarter investment over the plant lifetime
Well-designed dust control protects uptime, optimises cost and secures compliance. The value shows up across three areas over the life of the plant.
Capital (CapEX)
Focusing on the most critical emission points — crushers, screens, conveyor transfers and load-out stations — and correctly sizing equipment avoids unnecessary investment in oversized systems.
Operating (OpEX)
Product recovery
Airborne dust is lost product. Effective capture returns valuable material to the process stream, increasing recoverable yield.
Energy efficiency
Optimised airflow and efficient filtration hold a low pressure drop and reduce fan energy.
Maintenance reduction
Robust design and reliable discharge reduce abrasion, prevent blockages and extend filter life.
Uptime value
Reliable dust control improves plant stability across crushing, screening, conveying and loading. By reducing dust accumulation and protecting equipment, well-designed systems help prevent production interruptions and support safe working conditions.
Long-Term Partnership
Future-proofing your operation
From first study to upgrade, Nederman MikroPul supports the asphalt plant across its full lifecycle.
Design & Planning
Pre-studies, profitability calculations and detailed planning to define the right concept for your foundry.
Delivery & Installation
Construction, installation and commissioning of complete systems.
Service & Maintenance
Maintenance, troubleshooting and on-call service to keep equipment running.
Monitoring & Control
Continuous monitoring of key parameters, to provide early warnings and prevent unplanned downtime.
Optimizing & Upgrades
Performance upgrades, retrofits and extensions as capacity or regulatory requirements change.
Common things to know
Frequently Asked Questions
Mining dust control questions
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Last updated: July 2026
