Compact sand washing or cyclone system

TUSA fines recovery systems have been designed with the following aims in mind.

  • Optimum sand recovery
  • Clay and impurities removal
  • Final product dewatering

These units essentially consist of three components.

  • Pumping unit
  • Cyclone
  • Dewatering screen
Grupos Compactos Tratamiento de Arenas

The pumping unit consists of a truncated-pyramid hopper and a centrifugal pump. It receives the slurry (sand and water) from the facility that requires treatment. The pump feeds the slurry into the cyclone (also known as a hydrocyclone) at the appropriate pressure and concentration. The hopper serves to keep the amount of slurry fed by the pump stable and is fitted with a mechanical device for this purpose.

The cyclone performs the most important work in the system. The slurry is pumped tangentially into the top of the cyclone to generate a whirlpool effect with a longitudinal vortex.

The larger and heavier solid particles are pushed to the sides of the cyclone by centrifugal force and descend together with a little of the water to the bottom. The finer particles, with most of the water, rises and leaves as overflow through the top of the cyclone.

TUSA cyclones filter out particles of up to 80 microns, and are therefore able to remove the clay particles found in the sand.

The dewatering screen receives the overflow from the cyclone and filters it, removing as much water as possible for recirculating to a collection tank.

Mechanical Characteristics

The mechanism that powers these screens is an eccentric rotating mass vibration motor that can regulate vibration intensity.

Vibration amplitude is regulated by the counterweight, which allows amplitude to be increased or decreased.

The counterweight shaft is mounted on the vibrator frame with two large roller bearings.

The lubrication of the bearings is designed to prevent the entry of dust and other impurities. These generally use grease, except in the case of the heavy models, for which a circulating oil lubrication system is used.

The vibrating structure of the screen comprises two side panels connected by the frames housing panels of wire mesh. These rigid frames are solidly built using girders.

The suspension system for the screens is made up of spiral springs to achieve greater uniformity of motion.

TUSA HN series screens are well supported and the springs work by compression.

These screens are equipped with an amplitude limitation device for stop and start.


TUSA produces a range of 5 cyclone system models:

  • 418 E-2 (produces 40t/h of sand)
  • 524 E-3 (produces 60t/h of sand)
  • 630 E-4 (produces 75t/h of sand)
  • 836 E-4 (produces 100t/h of sand)
  • 1030 E-5 (produces 150t/h of sand)

TUSA also offers custom solution for the recovery of fine materials from the overflow of already existing conventional equipment (bucket wheels, screw washers, etc.)


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