Passive dust control at conveyor transfer points: design notes for mine engineers
Reviewed by Joe Ashwell

First reported on International Mining – News
30 Second Briefing
Passive dust control retrofits for belt conveyor transfer points are being promoted by Martin Engineering, focusing on sealing the chute enclosure and managing internal airflow so fine particles settle back onto the material stream instead of escaping. The approach relies on properly designed skirting, wear liners and curtain arrangements rather than powered extraction, aiming to reduce spillage, respirable dust and housekeeping demands around loading zones. For brownfield mines, the concept offers a low-energy alternative to baghouses and ducting, but depends heavily on tight sealing and accurate control of entry and exit air paths.
Technical Brief
- Retrofit packages typically combine skirting, wear liners and internal curtains into a single engineered enclosure.
- Design focuses on maintaining negative pressure at entry and exit points to avoid fugitive dust plumes.
- Chute geometry is adjusted to minimise free-fall height and impact angle, reducing particle liberation at source.
- Wear liners are specified to maintain tight clearances over time, limiting gaps that become chronic leak paths.
- Skirt sealing arrangements are configured to accommodate belt mistracking without opening gaps or overloading idlers.
- By avoiding fans and ducting, the approach removes ignition sources and confined-space maintenance on baghouses.
- For safety management, passive systems reduce manual shovelling and wash-down frequency around transfer points.
Our Take
Across recent International Mining coverage, Martin Engineering repeatedly links dust and carryback control to integrated transfer-point design rather than standalone components, so a focus on passive dust control at conveyor transfer points is likely being framed as part of a system-level optimisation strategy rather than a bolt-on fix.
With 2520 tag-matched pieces under Projects/Product/Safety/Sustainability, this dust-control article fits a cluster in our database where OEMs like Martin Engineering are using relatively low-tech mechanical changes at conveyors to deliver measurable reductions in airborne dust, which can be easier to justify in brownfield mines than capex-heavy extraction or ventilation upgrades.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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