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Spirals AKA-SPIN are sorting devices which separate materials according to their density differences. They can be used for a grain size range from 60μm up to 2mm, with a throughput per spiral ranging between 1– 4t/h. If a higher throughput is required, 2 or 3 spirals can be combined to form one column.
Principle of Operation
The slurry (10% – 40% solids depending on application) is fed into the spiral from the top. Spread on the spiral surface, it moves down by gravity. A transverse flow is superimposed to the main flow downwards. This combination results in a separation of the particles contained in the suspension, depending on their density. Particles with a lower specific gravity, such as wood, coal or organic matter, are concentrated in the outer areas of the flow. Particles with a higher specific gravity are directed towards the spiral axis.
Design Features and Advantages
- Separation of up to 3 fractions: heavy, middling and light density products
- Wear resistant polyurethane coating of the spiral body
- Light weight and robust design
- Spirals can be designed into columns and banks
- Ore and mineral sorting
- Coal processing
- Sand cleaning
- Soil remediation
- Municipal residues
AKW Apparate + Verfahren GmbH is a medium-sized, privately owned company focussed on process engineering...
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