Spiral separators from Multotec separate / concentrate particles either by density or by shape. We supply wet and dry spiral separators, providing an essential classification solution to Africa’s mineral beneficiation operations.
- Maximise separation with sliding or auxiliary splitters
- Single, twin or triple-trough spiral separators
- 3 to 8 turns in high- and low-profile troughs
- Auto Reject Channel® offers excellent removal of unsuitable particles
Glencore Xstrata, Anglo Coal, BHP Billiton, OceanaGold, QM and Rio Tinto use Multotec equipment.
Spiral separators use centrifugal force to segment mineral streams as they are fed down the spiral trough. In wet spiral separator applications, the particles within slurries will begin to cluster according to their density. Lighter-density particles are forced to the outside of the path, and heavier-density particles remain in the centre. Dry spiral separators sort by shape. Rounder particles travel faster, are forced to the perimeter of the spiral, from where they can be collected separately from non-rounded particles. Our spiral separators have a diameter of 1 000 mm.
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Our range of spiral separators:
Our spiral separators for heavy minerals, including iron ore, chrome, mineral sands and other high-density minerals, separate particles in the size range 1.5 to 0.04 mm.
We have 3-turn, 5-turn and 8-turn spirals with high-, medium- and low-gradient profiles. Our high-capacity spiral separator (the HX series) provides a per-start tonnage rating of 5 to 9 tph, depending on the mineral type, and is especially ideal in the treatment of low grade ore, where large tonnages are processed.
Mineral spiral separator components include the spiral trough; sliding or auxiliary splitters; launders; distributor and piping; feed box; product box and product splitters; and the modular housing frame.
Our single- and double-stage spiral separators are optimised for particles in the size range of 1 to 0.1 mm, providing enhanced coal washing for slurries. Their compact, modular design provides flexibility when building or upgrading your plant.
Double-stage spiral separators reduce the requirements of height and floor space in a plant, and reduce capital and operating costs. The MX7 spiral separator is ideal for difficult to wash coals, improving the overall efficiency of tougher separation applications.
These spiral separators are built from high-quality materials that provide a long service life, low costs of operation and low maintenance.
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Additional spiral separator services
- Test work on spiral concentrators, laboratory and pilot plants
- Consultation on spiral separators and your plant
- Commissioning of spiral separator and equipment
- Spiral separator optimisation
- Design assistance to our customers