Cyclone Dust Collector
Cyclones are mechanical centrifugal separators — incoming gas spirals through a tangential inlet, larger particles are thrown outward by centrifugal force and fall to the dust hopper, cleaned gas exits up the vortex finder. No moving parts, no consumables, no compressed air.
- Removal efficiency 70–95% depending on particle size and design (Stairmand high-efficiency vs standard)
- Operating range: 5 μm and above on standard, down to ~3 μm on high-efficiency
- Pressure drop 0.8–2 kPa
- Temperature up to 400°C (carbon steel), higher with refractory or alloy
- Abrasion-resistant linings to duty: Ni-Hard, Cr-carbide weld overlay, ceramic tile, AR400/AR500 plate
Typical roles:
- Pre-separator upstream of a baghouse or WESP — drops the bulk dust load, extends bag life
- Product recovery in pneumatic conveying — milling, drying, crushing
- Standalone collector for coarse dust — timber, sawdust, grain, woodchip
- Spark arrestor on boiler emission systems — drops embers + coarse ash before the filter
Limitation: efficiency falls off below ~5 μm. For sub-μm or sticky/condensable dust, pair the cyclone with a baghouse or WESP.
Multicyclone Dust Collector
Multicyclones — banks of small-diameter cyclones operating in parallel — exploit the fact that smaller cyclones run at higher tangential velocity and capture finer dust. The tubes are banked in pyramidal or rectangular arrays.
- Removal efficiency 85–95% on 5 μm, useful down to ~2 μm
- Operating temperature up to 400°C continuous (carbon steel + insulation)
- Pressure drop 1–1.5 kPa
- Common in boiler emission control, cement plants, lime kilns, asphalt plants, milling circuits, grinding processes
Delivered projects:
- NZ Steel Glenbrook (NZ) — multi-cyclone + venturi as a 2-stage system on the iron-melter offgas, 3Cr12 hot abrasive duty, 132 kW fan
- PT Kaltim Coal (East Kalimantan, Indonesia) — Multicyclone 56-7 for coal-handling dust
Often deployed as a pre-conditioner: drops the worst of the dust before a downstream baghouse or scrubber sees it. Reduces filter loading, extends bag life, removes embers/sparks where the upstream process produces them.
Frequently asked questions
What do cyclones remove?
Coarse-to-medium particulate by centrifugal separation — well suited as pre-separators and for product recovery.
Will a cyclone meet my dust limit?
For fine or sub-micron limits, no — pair it with a baghouse, ESP or WESP; the cyclone drops the bulk load first.
Cyclone vs multicyclone?
Multicyclones use many small-diameter tubes for higher efficiency on finer (but still not sub-micron) dust.
Abrasive dust?
We line the unit to the abrasiveness of your material so it survives the duty.
Relevant Industries & Applications
Foundry
Foundry