Jameson Cell in rougher duties: design and debottlenecking notes for plant engineers
Reviewed by Joe Ashwell
First reported on Australian Mining
30 Second Briefing
Glencore Technology is pushing its Jameson Cell from traditional cleaner/scavenger roles into primary rougher flotation duties to lift recovery and cut energy use in constrained concentrators. Recent installations, including at Lundin Gold’s Fruta del Norte plant in Ecuador, use the cell’s downcomer-based, high-intensity aeration and small footprint to debottleneck existing rougher banks without major civil works. For plant designers, this signals growing interest in retrofitting compact, low-maintenance flotation units to handle higher throughputs within fixed grinding and tailings capacities.
Technical Brief
- Downcomer modules are mounted externally, allowing maintenance access without draining the whole rougher tank.
- Air is self-aspirated through the downcomer, removing the need for large central blower systems.
- Froth depth and air rate are controlled independently, enabling tighter metallurgical control in variable ore feeds.
- The compact rougher cells reduce interconnecting piping runs and associated slurry head losses between banks.
- Jameson Cell internals have no rotating impellers, cutting gearbox inventories and mechanical vibration on flotation floors.
- For brownfield concentrators, similar retrofits allow incremental rougher capacity increases without expanding grinding or tailings circuits.
Our Take
Lundin Gold’s earlier use of Jameson Cells at Fruta del Norte, noted in our January 2026 coverage, was tied to a planned throughput lift, so Glencore Technology pushing the equipment into rougher duties signals confidence that these units can now handle higher-tonnage, front-end roles rather than just cleaning or scavenging.
The cluster of recent Fruta del Norte items in our database – spanning a $100 million exploration budget, new copper-gold porphyry targets, and a sizeable silver stream sale – suggests Lundin Gold is optimising both plant performance and balance-sheet flexibility in parallel, which makes incremental recovery gains from Jameson Cell deployments more valuable at the portfolio level.
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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