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FLSmidth
FLSmidth EcoPaste Paste Thickener EP-15
Model: EcoPaste-15
4-hour response · Pricing in SAR · Delivery across all KSA regions
EcoPaste-15 — FLSmidth EcoPaste Paste Thickener EP-15
The FLSmidth EcoPaste Paste Thickener EP-15 is a high-rate paste thickening system engineered to produce high-density underflow slurry — typically above 60–75% w/w solids — for paste tailings disposal, backfill operations, or high-solids slurry transport. Unlike conventional or high-rate thickeners that produce pumpable slurry underflow, the EcoPaste generates a non-Newtonian paste that retains its shape after deposition, enabling dry-stack or paste tailings facilities that dramatically reduce the water footprint and environmental risk of tailings storage compared with conventional tailings dams. This characteristic makes the EcoPaste thickener the technology of choice for water-stressed mine sites — a category that includes virtually all mineral processing operations in Saudi Arabia's arid climate.
The EcoPaste-15 designation refers to a 15-metre diameter paste thickener tank with FLSmidth's proprietary deep-cone compression zone geometry, high-torque paste rake mechanism, and variable-speed drive. The deep cone design maximises the hydrostatic pressure on the settled solids bed in the compression zone, driving out interstitial water to achieve the high underflow densities that distinguish paste thickening from conventional thickening. The high-torque rake is specifically engineered to move viscous paste without bridging or torque overload — a common failure mode in competing paste thickener designs. The variable-speed rake drive allows the operator to adjust rake speed in response to changes in feed solids and paste viscosity, maintaining consistent underflow density.
Water recovery is a strategic priority for all mineral processing operations in Saudi Arabia's arid environment. The MEED-reported water scarcity projections for the Kingdom, combined with Vision 2030's environmental sustainability mandate and the high cost of desalinated or pumped water in remote mining regions like Wa'ad Al-Shamal, make paste thickening a near-universal requirement for new mineral processing plant designs. FLSmidth EcoPaste thickeners are already deployed at several international mine sites in similarly arid conditions — including copper operations in the Atacama Desert and iron ore operations in the Australian Pilbara — providing a directly applicable reference for Saudi mineral processing designers. Ma'aden's ongoing and planned expansions at Wa'ad Al-Shamal specify paste or high-density thickening for all tailings streams.
Razz Middle East works with FLSmidth to provide EcoPaste thickener design, supply, and installation services for Saudi mineral processing clients. Our technical team provides thickener sizing using FLSmidth's Intensive Diagnostic Thickening (IDT) testwork methodology, civil foundation coordination, installation supervision, flocculant dosing system supply, and full commissioning. We support the complete lifecycle of paste thickener operations, from testwork through to long-term maintenance supply contracts for rake mechanisms, drive units, and instrumentation.
Technical Specifications
Full specifications for the EcoPaste-15
- Tank Diameter
- 15 m
- Underflow Density
- 60–75% w/w solids (ore-dependent)
- Rake Mechanism
- High-torque paste rake, variable speed
- Cone Geometry
- Deep-cone compression zone
- Flocculant System
- Automated dilution and dosing
- Unit Area
- 0.5–2.0 m²/t/d (IDT testwork determined)
- Rake Drive
- Variable speed electric, torque-monitoring
- Instrumentation
- Bed level, underflow density, torque, rake speed
Key Features & Benefits
- Deep-cone compression zone geometry maximises hydrostatic pressure on the settled solids bed, driving interstitial water out to achieve non-Newtonian paste underflow at 60–75% w/w solids — enabling dry-stack or paste tailings without a tailings dam.
- High-torque variable-speed rake mechanism is specifically engineered to move viscous paste under sustained heavy loads without bridging or torque overload, a critical reliability advantage over conventional thickener rake designs.
- Automated flocculant dilution and dosing system with real-time optimisation minimises flocculant reagent consumption while maintaining consistent settling rate and underflow density.
- Comprehensive instrumentation suite — bed level sensor, underflow density meter, rake torque monitoring, and inflow flow measurement — integrates with FLSmidth's ECS/ControlCenter for fully automated operation and process upset detection.
- Proven in arid-climate mine operations analogous to Saudi Arabia's desert conditions, including copper operations in Chile's Atacama and iron ore operations in Western Australia, providing direct operational reference for Saudi mineral processing projects.
Industrial Applications in Saudi Arabia
- Phosphate beneficiation tailings thickening at Ma'aden Phosphate Company's Wa'ad Al-Shamal plant, recovering process water for recycle in the beneficiation circuit to minimise consumption of scarce and expensive water in the remote Northern Borders region.
- Flotation tailings paste production at gold and base metal operations on the Arabian Shield, where paste tailings facilities eliminate the environmental liability of conventional tailings dams and satisfy Saudi MEWA environmental permit requirements.
- Alumina refinery bauxite residue (red mud) thickening at Ma'aden Aluminium's Ras Al-Khair facility, concentrating residue for dry-stack disposal and recovering sodium aluminate-bearing liquor for recycle to the Bayer process circuit.
- Mineral tailings densification for hydraulic backfill in underground mining applications under Saudi Vision 2030's expanding underground mineral extraction projects.
- Industrial mineral slurry thickening at chemical and mineral processing plants in Jubail and Yanbu industrial cities, recovering process water and producing filter press feed at a density that minimises filter cycle time.
Industrial Supplier in Saudi Arabia
Get a Quote for the FLSmidth EcoPaste Paste Thickener EP-15
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Frequently Asked Questions — EcoPaste-15
Common questions from buyers in Saudi Arabia and the GCC