Density Separator

Floatex Density Separator is a high capacity hindered settling classifier providing a class leading separation accuracy and capable of tonnages in excess of 600tph per single machine.

Applications are:

  • Production of consistently graded sand products
  • Removal of light contaminant material such as Coal, Lignite, Peat etc., from sands
  • Concentration of heavy minerals
  • Separation of minerals of sufficiently different specific gravities
  • Preparation of sands for direct stockpiling
  • Removal of silts
  • Coal/Shale separation
  • Preparation of sands for attrition scrubbing, acid treatment or froth flotation and for the rinsing of the sands following these processes
  • An integral part of a Floatex Multi-Blend Plant

Hindered Settling – When a controlled rising current of water is introduced across the area of the bottom of a classifying vessel, a sand can be expanded into a state of teeter. In this teetered state the sand grains will classify themselves so that the coarse grains report to the bottom of the column where they will stay relatively close to each other with high velocities of water flowing between them, whilst the finer particles will be dispersed to the higher levels of the column where they will stay in more open suspension.

This teetered suspension is, to all intent and purposes, a dense media and may be used to float off another material, such as coal or lignite, that is light enough to be supported by the suspension irrespective of their particle size. Equally, a concentration of heavy minerals may be made, as hindered settling has the effect of enhancing the difference in specific gravities between minerals, to the extent that a heavy mineral can generate sufficient density to support quartz.

Why is the Density Separator so good?
We have been developing the Density Separator for over 40 years to be the best hindered settling classifier available, our computer modelling and machine design are second to none.
Our level of dedication to the ensuring that our classifier is the best even extends to the underflow valve. To meet our exacting requirement we developed our own Pinch Valve.
The Floatex Pinch Valve has not been designed for 101 different application, it has been designed with the single purpose of getting the best possible performance from the Floatex Density Separator.
So, if it not a Floatex Pinch Valve it is not approved and not suitable for the Floatex Density Separator.

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