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Introduction
Spiral chutes are devices to separate solid components in a slurry, based upon a combination of the solid particle density as well as the particle’s
hydrodynamic properties (e.g. drag). The device consists of a tower, around which is wound a sluice, from which slots or channels are placed in
the base of the sluice to extract solid particles that have come out of suspension.
Typical spiral concentrators will use a slurry from about 20%-40% solids by weight, with a particle size somewhere between 1.5-.075 mm (17-340 mesh),
though somewhat larger particle sizes are sometimes used. For good separation, the density difference between the heavy minerals and the light minerals
in the feed stock should be at least 1 g/cm3; and because the separation is dependent upon size and density, spiral separators are most effective at purifying
ore if its particles are of uniform size and shape. A spiral separator may process a couple tons per hour of ore, per flight, and multiple flights may be
stacked in the same space as one, to improve capacity.
Feature
--Reasonable structure and small occupation area.
-- High recovery, high efficiency, and precise separation.
-- Light in weight, rust and corrosion resistant.
--Simple installation and Minimal maintenance requirements.
-- Low operating cost and long operating life.
-- Reliable running with minimal operator attention.
-- Strong adaptability to fluctuation of feeding amount, density, size and grade.
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