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Mining & Mineral Processing

Large volumes of hard and abrasive dust particles are typical in most mining & mineral processing related applications. This dust type rapidly wears out filter media, leading to frequent maintenance or worse: filter leaks. Without effective dust emission control, equipment, process, employees and theenvironment may be at risk and production could be halted.

Cement manufacturing offers particularly difficult challenges to dust collectors. Based on data from installations, it's been estimated that as much as 1% of mining throughput can be lost to the surrounding environment. For a 700 TPH quarry, that's about seven tons per hour lost from conveyors, crushers and screens, and that does not include losses from stockpiles.

As your single filtration source for mining and minerals, Donaldson helps you navigate the complex world of dust collection specifically for the cement industry in the most efficient and environmentally-friendly way.

Products for Mining & Mineral Processing

Cartridge

Donaldson Torit® advanced-technology cartridge dust collectors and a variety of filter media that conquer the challenges of most types of industrial dusts, including pharmaceutical, chemical, grain, bulk/powder, food, metal and others. ​​​


Downflo® Evolution

The best-in-class Downflo® Evolution (DFE) dust collector is capable of reducing equipment size and number of required filters by up to 40% compared to a typical cartridge collector.

PowerCore®

Torit® PowerCore® dust collection technology use proprietary Ultra-Web nanofiber technology​, which allows for a smaller, more efficient filter, reducing the overall footprint of the dust collector.


PowerCore® CP Series

Extremely small but powerful package that handles high airflow, challenging particulate, and fits into the smallest places.

Baghouse

We offer a complete line of dependable, rugged baghouse dust collectors including RF, Dalamatic®, IRD, Unimaster® and many others to keep your operation running smoothly.


Dalamatic®

The Dalamatic® dust collector is an automatic reverse-jet fabric filter dust collector.  It is most suitable for continuous process applications involving heavy-duty product recovery, or collection of large concentrations of nuisance dust.

Modular Baghouse

The Modular Baghouse dust collector delivers reliable, efficient, continuous-duty, pulse-jet operation in a compact and modular design.

Dust Control in Specific Areas

The following is a list of some of the typical areas at mines and quarries generating dust that can be controlled by dust collection equipment:

  • Rail or truck dumps
  • Crushers
  • Screens
  • Conveyor belt transfer points
  • Silos or bin filling
  • Rail, barge or truck loading


Guidelines to Practical Dust Collection

Years of experience in mining and quarry dust control has highlighted a number of significant points:

Good Design and Equipment Selection Is Essential

Anything marginal in either design or selection results in immediate or short term inadequacies in collector performance. The difference in selections between an effective and ineffective dust collector is often much narrower than in many other industries.

Everywhere That Material Is Supposed to Drop Through Air, Dust Is Generated

The most obvious dust generation points may seem to be conveyor transfer points and feed points from screens and crushers. But often, oversized feed-outs from screens or transfer of large product into bins will generate significant dust.

Budgetary constraints are important, so it is generally better to do some parts right than a lot of parts wrong.

Dust Collectors Philosophy: Source or Central

Two basic strategies exist for applying dust control to mines and quarries; source collection (putting the dust collector at the source of the dust emission so collected dust can be deposited directly back into the process stream) or centralized collection (putting the collector in a central location where dusty air is ducted to the collector and discharged as a separate process stream).

Source Collection Operational Advantages Include:

  • Lower capital costs as less ducts, and fewer hoppers, screw conveyors or rotary valves are typically required.
  • Fewer maintenance problems as fewer ducts or hoppers are being used that can block or bridge. In addition, since there are fewer hoppers, there are fewer hopper discharge devices that need to be maintained.
  • A shutdown of one unit may result in temporary increased emissions in a single area, but will be unlikely to necessitate a complete plant shutdown.

Dust Collection Considerations

The following points need to be considered in the selection of central dust collectors for mining and quarrying applications:

  • Mine and quarry dust is often abrasive and particle impact against filter media needs to be considered to avoid possible filter damage. This requires consideration of incoming air velocity, dust distribution, and air patterns within the collector.
  • Dust removal and disposal requires careful consideration to avoid blockages, equipment abrasion, secondary dust emissions, and higher costs for maintenance and materials handling.

Source collection systems may be easier to deal with since hoppers and ducting are often not used. But when using source collection, the following should be considered:

  • Since collectors are often much closer to the source of dust generation, be aware of any water or oil in the dust as this could create problems with filter medias.
  • Filter abrasion typically is not an issue, however, if the source collector is being used as a bin vent, place the collector as far from the inlet as possible to avoid abrasion and/or unnecessarily high dust loading.

Donaldson Filters for the Mining Industry

Donaldson offers many filtration options for the mining industry.

Applications

Model: RFs (Four 376RFW10 Units & One 484RFW12 Unit)
Application: Limestone Crushing
Location: Oklahoma

Model: 81MBT8(s)
Application: Bin Venting Diatomaceous Earth
Location: California

Model: Dalamatic Insertable 20/10
Application: Coal Conveyor Transfer Point
Location: Canada

Model: PowerCore CPC 3
Application: Cement
Location: Minnesota

Model: DLMC 4/8/15
Application: Rock Crushing
Location: Arizona

Six Things to Consider When Purchasing a Dust Collector

We advise the following six considerations to ensure you get exactly what you need in a dust collection system.

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Torit PowerCore collectors were the answer to Anchor Block Company’s chronic filter plugging problems.

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