• Description


    Key Advantages

    • 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 Tyre 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 Tyre Drive System (PTD) which provides an alternative to standard chain and gear drive systems. This system of rubber tyres mounted on independent gear boxes have been well proven in numerous difficult applications and have been shown to provide excellent serviceability and reliability. An instrumental feature accompanying Sepro’s tyre driven equipment is the tyre pressure monitoring system (TPMS) which comes standard with each Sepro rotary control console.

  • Applications

    Sepro Tyre 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

    Designed to facilitate maximum metals recovery, Sepro Tyre Drive Agglomeration Drums bind excessive ore fines to a uniform size before being deposited on to a heap to be leached. During the pelleting process a lixiviant may be added to the rotary drum, such as a sulfuric acid or a cyanide solution, to begin the leaching process as the drum rotates. Driven by high efficiency electric motors on a custom engineered rim and hub assembly, Sepro Mineral Systems Agglomeration Drums use a tyre drive system and require only standard, off the shelf major drive components. The use of a tyre driven system also results in significant maintenance cost savings over time, compared with standard trunnion/steel wheel drive systems.

    Sepro Tyre Drive Agglomeration Drums are available in several standard sizes to suit process specifications. They are the ideal solution for gold ores in which cement is the binding agent, as well for copper, uranium and nickel laterite ores, which require organic polymers to bind the fines. Each Sepro Agglomeration Drum includes a flexible rubber drum lining system to prevent ore build up, as well as an angle adjustable rotary drum to suit project specifications. Our team of knowledgeable process engineers can advise you on what size and configuration is right for your heap leach application.

  • Specifications


  • Automation

    Sepro Mineral System’s line of heavy duty tyre driven Agglomeration Drums utilize a powerful and rugged Variable Frequency Drive (VFD) package, allowing the equipment’s 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 Tyre Drive Agglomeration Drum AutoPAC comes complete with a jacking cradle, tyre pressure sensors, and hardwired safety limit switches.

    The tyre drive system is a stand-out feature included in Sepro Agglomeration Drums. The drive is built to be simple, effective and low maintenance. Tyres are designed to be removed individually without complicated shaft, bearing and coupling arrangements. Tyres are carried on purpose built wheel assemblies, which are driven by a bevel/helical gearbox direct connected to the electric motor. Starting and speed control is done via an AC variable frequency drive.

    Every Agglomeration Drum manufactured by Sepro Mineral Systems comes complete with a Tyre Pressure Monitoring System (TPMS). Located within the Rotary Control Console (RCC), the TPMS feature protects the operation from costly downtime due to under-inflated tyres. 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 tyre 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, Tyre Pressure Monitor System (TPMS)
    • Redlion G308 HMI 8.4” Screen w/ Ethernet
    • Start / Stop / E-Stop Pushbuttons
    • Control Relays
    • Five Port Ethernet Switch