Flotation Tester FT 100 XL

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Flotation is used in gold, copper, lead, zinc, and coal mining to recover fine mineral particles from ore slurry. This technique involves filling the slurry into a frothing solution to separate the particles. Due to their surface tension some particles float to the top with the air bubbles where they can be extracted; fragments which still contain large amounts of ore sink to the bottom of the tank as so-called “tailings”.

The laboratory flotation machine FT 100 XL is used to determine the percentages of the reagents required in a production flotation cell and for metallurgical sampling. A variety of flotation cells is available for use with the FT 100 XL. Tank and agitator are made of stainless steel. The machine is designed for a material fineness of 500 to 750 microns.

The FT 100 XL is a precise and reliable tool to obtain reproducible test results to ascertain the operational capability of flotation plants.

Application Examples

cement, minerals, ores, raw materials, slag, ...

Product Advantages

  • adjustable rotation speed up to 1,200 min-1
  • range of flotation cells up to 5,000 ml
  • adjustable air flow regulation
  • convenient parameter setting via display


Applications separation of different materials, particularly minerals, by agitating a pulverized mixture of solids in liquids
Field of application construction materials, environment / recycling, geology / metallurgy
Feed material slurries
Material feed size* < 800 µm
Batch size / feed quantity* 5,000 ml, depending on the flotation cell
Time setting adjustable 0 - 99 min
Speed setting adjustable 200 - 1,200 min-1
Flotation cells 0.5 l / 1.0 l / 1.75 l / 2.0 l / 3.0 l / 3.5 l / 5.0 l
Drive power 0,37 kW
Electrical supply data 230 V, 50 Hz
Power connection 1-phase
W x H x D 600 x 760 x 650 mm
Net weight ~ 85kg
Standards CE

Please note:
*depending on feed material and instrument configuration/settings

Function Principle

The flotation process involves mixing the finely ground sample materials by rotation with water and various chemicals. Air is then pumped through the slurry mixture and the mineral particles attach themselves to the bubbles and rise to the surface where a concentrated mineral froth is formed. The mineral froth is then extracted and the concentrated mineral is further refined. Waste rock particles drop to the flotation tank’s bottom as tailings.

Subject to technical modifications and errors