Application
Dust Collection in Building Materials Plants
Answer in brief
In a cement or lime plant the collectors run continuously at high dust loads, and filter life is the operating cost.
Mineral dust is abrasive and the air is often hot, which rules out some media and shortens the life of others.
- Match media to temperature, moisture and abrasiveness.
- Treat fuel dust collectors as a separate protected case.
- Watch emissions, because the limits are enforced.
Reviewed October 21, 2026 · Updated October 21, 2026
The problem
Mineral collectors handle heavy loads of abrasive fines, sometimes hot and sometimes with condensation risk, and the fuel side adds a combustible dust case.
Desired outcome
A collection system that meets the emission limit continuously, with a filter life that is planned rather than discovered.
Process approach
Bag filters dominate on hot, heavy duty streams with media chosen for the temperature and the chemistry; cartridges are used where the dust is fine, dry and the space is tight.
Pre-separation removes the coarse fraction and extends media life considerably.
On the fuel side the collector is explosion protected and isolated, which the mineral side generally does not require.
- Media selected for temperature, moisture and abrasiveness.
- Pre-separation ahead of the filter.
- Separate protection concept for fuel dust collectors.
Selection factors
- Air volume, temperature and dew point of each stream.
- Dust load and particle size.
- Emission limit and the monitoring required.
- Whether the stream carries combustible fuel dust.
- Access for filter replacement.
Common failure modes
- Media chosen without regard to the dew point
- Coarse fraction destroying filter media that a pre-separator would have removed
- Fuel dust collector treated like a mineral one
- Emission monitoring added after the installation
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