Featuring 500m³ capacity, the new TankCell e500 float cell design provides large scale savings from lower capital investment and operational costs in comparison with multiple smaller units, whilst still maintaining high metallurgical performance.
For instance, in an ‘average’ rougher/scavenger duty, six 500m³ cells would need only 75-80% of the installed power of 10 x 300m³ cells or little more than half the installed power of 30 x 100m³ units, resulting in greater operational profitability and whole-of-life performance for the TankCell e500.
Outotec first installed 300m³ flotation cells as roughers at OceanaGold’s Macraes mine in New Zealand. More than 200 of the TankCell 300 float cells have been sold since, including 30 x TankCell 300s at Kennecott and 34 x TankCell 300s at Sierra Gorda.
Ben Murphy, Technology Leader, Flotation for Outotec in the South-East Asia Pacific Region explains that declining ore grades, higher throughputs and metallurgically difficult ore bodies are some of the challenges facing many sites. Additionally, the industry’s growing requirement for energy reduction, optimised water usage and decreased emissions all require high performance and proven solutions.
Key features of TankCell e500 float cells:
- Forced air technology offers flexibility to decouple air addition and mixing to avoid sanding
- Separate areas within the FloatForce mechanism for pumping and air dispersion
- Efficient pumping even at high air feed rate, delivering maximum performance with low power draw
- Direct gearbox drive eliminates belt/pulley arrangement or external motor cooling system with mixing driven by a standard 4 pole motor
- Smaller drive footprint, simplified maintenance, greater reliability with specifically designed gearbox
- CFD modelling tools and process validation provide effective evaluation of hydrodynamics of new designs