Electrodeposition system EC series

Product overview
Our EC series electrowinning cells are installed worldwide for gold and silver recovery, with over 200 units in operation. They provide efficient current distribution, safe operation, straightforward in-cell sludge removal and long service life. Designed to treat 15-80 gallons per minute (3.5-18 m3/hr) of pregnant solution, the cells are compatible with Zadra and AARL elution, high-grade leaching, intensive cyanidation, gravity concentration and some non-cyanide processes. Typical service interval: weekly for sludge recovery. Typical busbar voltage: 2.1 V to 5 V; typical current: 60 A to 90 A per cathode (higher amperage used for some high-grade solutions).

Key benefits

• Safe construction: stainless-steel bodies with polypropylene lining, integrated exhaust plenum and durable electrodes to reduce fire and corrosion risk.
• Efficient maintenance: in-cell cathode washing using a portable pressure sprayer or installed spray system reduces service time by up to 75%.
• Flexible integration: multiple sizes, left- or right-hand orientation, vertical or horizontal flanges and a range of optional extras to fit existing refineries and applications.

Configurations and features

• Stainless-steel cell bodies lined with polypropylene for electrical isolation and thermal insulation.
• Built-in exhaust plenum for off-gas capture and management.
• Stainless-steel anodes and cathodes for improved corrosion resistance and longevity; carbon and DSA anode options available for highly corrosive solutions.
• In-cell cathode washing capability (portable sprayer or installed spray system) to avoid cathode removal and speed servicing.
• Hydraulic-actuated lids to replace manual lid operation.
• Corrosion-resistant spray-in liners to extend life in chloride, sulfate and silicate-bearing solutions.
• Mercury abatement systems available for treating EW off-gas where required.
• Flexible mechanical configuration: left/right orientation and vertical/horizontal flanges for retrofit into existing plants.

Models / comparison
Model | Cell size (ft3) | Anodes / Cathodes | Rectifier Amps (A)
50EC13 | 50 ft3 | 14 / 13 | 750
75EC18 | 75 ft3 | 20 / 18 | 1000
Typical range | 50 - 150 ft3 cathode equivalent | — | typically 500 - 2500 applied amps per cell

Applications and performance
Used with carbon ADR plants, carbon regeneration kilns, Merrill-Crowe systems, cyanide leach circuits and gravity concentration circuits. Operates effectively across a range of feed types and chemistries and has been used successfully with some non-cyanide metal-bearing solutions in addition to standard cyanidation processes.

Technical specifications

• Installed units: over 200 gold and silver electrowinning cells worldwide
• Throughput: 15–80 gallons per minute (3.5–18 m3/hr)
• Cell construction: stainless-steel body with polypropylene lining
• Typical busbar voltage: 2.1 V to 5 V
• Typical current per cathode: 60 A to 90 A (higher amperage used for some high-grade solutions)
• Cell sizes: 50 to 150 ft3 (cathode equivalent volume)
• Rectifier amps per cell: typically 500 to 2500 A applied
• Example anode/cathode counts: 14/13 (50 ft3), 20/18 (75 ft3)
• Service interval: typically weekly for sludge recovery
• Anode options: carbon and DSA anodes for highly corrosive solutions
• Optional equipment: hydraulic-actuated lids, corrosion-resistant spray-in liners, mercury abatement systems, in-cell cathode washing / spray systems
• Mechanical options: left- or right-hand orientation; vertical or horizontal flanges for retrofit
• Compatibility: Zadra and AARL elution, carbon ADR, high-grade leaching, intensive cyanidation, gravity recovery, and some non-cyanide solutions