Show Search Menu

Mining & Mineral Processing

Mines and quarries are very dusty places. 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.

With mines and quarries under pressure from two directions this is not good news.

Good dust control is essential in meeting both environmental and occupational types of requirements.

Products for Mining & Mineral Processing

Industrial Air Filtration Product Studio Photography

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
Industrial Air Filtration Product Studio Photography

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.

Downflo® Oval
Industrial Air Filtration Product Studio Photography

The high performance Downflo® Oval (DFO) family of dust collectors provides up to 25% more filtration capacity than other same-sized cartridge collectors.

Downflo® WorkStation
Industrial Air Filtration Product Studio Photography

Downflo® WorkStations are flexible, modular, self-contained collectors that allow worker movement and visibility, specifically designed for areas of dirty and/or noisy operation.

Industrial Air Filtration Product Studio Photography

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
Industrial Air Filtration Product Studio Photography

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

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.

Learn More

Torit® PowerCore® Helps Anchor Block Operate Smarter

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

Learn More