• Falcon SB Gravity Concentrator Features

    The typical application for a Falcon SB Gravity Concentrator is recovering liberated precious metals (Au, Ag, Pt, etc.) within a grinding circuit. Outside of grinding circuits, Falcon SB Gravity Concentrators are also used for precious metal separation from aggregate or placer deposits.

    Falcon SB Gravity Concentrators are known as “Semi-Batch” Gravity Concentrators because they continually accept feed during the run cycle, but only produce mineral concentrate during periodic rinse cycles.

    Run times range anywhere from five minutes to several hours, depending on the mining application. Rinse times are generally less than a minute as Falcon Gravity Concentrators utilize a dynamic braking system to quickly slow the bowl down, rinse out the concentrate, and then return to full operational speed.

    Some of the machine’s other gravity concentration features are:


    • Highest G forces available in the mineral processing industry
    • Can operate between 50 and 200Gs
    • Unit capacities up to 400 t/h


    • Upgraded standard fluidization control results in a higher degree of machine management
    • Great for when the target mineral is in extremely low concentration
    • Built to handle overloading


    • Flat lid modular design increases wear life and maintenance costs
    • Low water consumption
    • Fully automated, “one touch” operation, minimizes offline time and offers the highest mineral concentrate security
    FeatureFalcon SBFalcon CFalcon UF
    Material recoveryGold, silver and platinum group metalsTin, tantalum, tungsten, chrome, cobalt, iron, fine oxidized coal and uraniumUltra fine particles including tin, tantalum and tungsten
    Process Water Consumption (m3/hr)25-35NoneNone
    Maximum G-Force 200300600
    Mass Yield To ConcentrateLow (<1%) Variable (0-40%)Variable (0-100%)
    Selective Particle Recovery6mm to 20 micron1mm to 10 micron75 micron to 3 micron
  • FAQs

    What operating costs can be expected?

    The simple and robust design of the Falcon SB Gravity Concentrator means that unit operating costs are the lowest in the industry, normally a few cents per tonne treated.

    What operating availabilities does Sepro Mineral Systems equipment attain?

    Sepro Mineral Systems maintains mechanical availability >95% if equipment is installed and maintained according to our recommendations.

    What do your model numbers mean?

    The model prefix designates the machine type. The suffix is the approximate concentrating surface area of the machine in square inches. A SB5200 Gravity Concentrator is batch unit with approximately 5200 in² of concentrating surface area.

    What top size should be fed to Falcon SB Gravity Concentrator machines?

    Maximum tolerable size for Falcon SB Gravity Concentrators is 6 mm but Sepro strongly recommends reducing the top size to 2 mm or less in most situations.

    Are there ‘gravity-only’ flowsheets available?

    Yes, Sepro Mineral Systems has developed unique flowsheets to help clients achieve previously unobtainable recoveries without using any reagents such as cyanide.

  • Technical Papers

    Sepro Mineral Systems devotes a substantial amount of time and revenue to the design and metallurgical performance of its mining technology. This is so that we can create the best performing equipment possible. You can read the latest research on the Falcon Gravity Concentrators in the technical papers below. Much of the research shown was conducted by research institutes, universities and onsite trials.

    1. The Gravity Recoverable Gold Test and Flash Flotation View PDF
    2. Development of the Falcon Concentrators View PDF
    3. Falcon Fine Recovery View PDF
    4. Gravity Concentration of Gold From Cyclone Feed In Grinding Circuits View PDF
    5. Centrifugal Concentrators in Gold Recovery and Coal Processing View PDF
    6. University of Liege Comparison of the Knelson and Falcon Centrifugal Separators View PDF
    7. Enhanced Gravity Concentration for Precious Metal Recovery
    Cyclone Feed and Base Metal Circuits
    View PDF


  • Laboratory Testing


    For support in determining the amenability of a mineral ore to separation by gravity concentration, we recommend laboratory testing with Met-Solve.

    To find out more about the tests available to those using the Falcon SB Gravity Concentrator and what the sample requirements are, call our experts or visit the Met-Solve Laboratories website to request a quote proposal.