Sepro Tire Drive Agglomeration Drums

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Sepro Tire Drive Agglomeration Drums are specifically designed to prepare feeds with high fines content for gold and base metal heap leaching operations. The agglomerating action in the agglomeration rotary drum, combined with small additions of cement, lime or organic polymers, binds the fines into an agglomerated pelletized product. This product is then heaped and leached without “pooling” and “channeling” caused by loss of heap permeability. Complete with a variable frequency drive (VFD) package, operators are able to fine tune the operation of the Sepro Agglomerator based on the application. No auxiliary drive is required to perform maintenance. Sepro Mineral Systems Agglomerator shells are manufactured in one piece to high quality standards and are thermally stress relieved to eliminate localized high stress areas.

The machine utilizes the Sepro Mineral Systems Pneumatic Tire Drive System (PTDS) which provides an alternative to standard chain and gear drive systems. This system of rubber tires mounted on independent gearboxes have been proven in numerous difficult applications and have been shown to provide excellent serviceability and reliability. An instrumental feature accompanying Sepro’s tire driven equipment is the Tire Pressure Monitoring System (TPMS), which comes standard with each Sepro rotary control console.

The Finer Details

Sepro Tire Drive Agglomeration Drums are used in a variety of heap leach applications, including:

Gold Ores

  • Mixing of lime for pH control
  • Cement for binder
  • Cyanide solution

Copper, Uranium or Nickel Laterite Ores

  • Sulfuric acid
  • Organic polymers for binder

  • Short delivery times
  • Low installation costs with no heavy foundation requirements
  • No critical components such as ring gears, chain drive, steel wheels or trunnion bearings
  • Standard, off-the-shelf major components to minimize downtime
  • Commercial heavy truck tyres that can easily be sourced locally
  • Units are all pre-assembled and shop tested
  • Flexible rubber drum lining system to prevent buildup
  • Shell supported design allows for quick and efficient maintenance
  • Drum angle on frame is adjustable to suit application

Sepro Mineral System’s line of heavy duty tire driven Agglomeration Drums utilize a powerful and rugged Variable Frequency Drive (VFD) package, allowing operation to be fine-tuned based on the heap leach application. The Rotary Control Console (RCC) component features a touch-screen HMI (Human Machine Interface), which is used to control and monitor the operating parameters. Every Sepro Tire Drive Agglomeration Drum AutoPAC comes complete with a jacking cradle, tire pressure sensors, and hardwired safety limit switches.

Every Agglomeration Drum manufactured by Sepro Mineral Systems comes complete with a Tire Pressure Monitoring System (TPMS). Located within the RCC, the TPMS feature protects the operation from costly downtime due to under-inflated tires. The system works as a closed loop control, allowing the HMI to disable the VFD should the operating conditions of the equipment stray outside of its defined parameters. Monitoring the equipment’s tire pressure greatly improves machine performance and availability over time.


Variable Frequency Drive Cabinet (VFDC)

  • NEMA 12 / IP 51 Enclosure
  • Vacon NXS VFD w/ Ethernet
  • Fused Disconnect
  • Line and Load Reactor
  • Control Relays


Rotary Control Console (RCC)

  • NEMA 4 / IP 66 Enclosure, Tire Pressure Monitor System (TPMS)
  • Red Lion G308 HMI 8.4” Screen w/ Ethernet
  • Start / Stop / E-Stop Pushbuttons
  • Control Relays
  • Five Port Ethernet Switch

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