Description
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.
Special Advantage
Structure
1- channel steel frame
2- feed chute
3- spiral chute
4- product interceptor
5- grafting trough
6 - ore separating bucket
The normal glass steel spiral chute is extended to the outer edge due to the water flow in the rotary motion.Dehydration is often observed near the inner margin. It is difficult to effectively carry out the stratification and increases the quantity of medium ore and decreases the quality of concentrate. The method of adding grooves on the groove of the plant has improved the situation, which effectively provides the mineral enrichment ratio and increases the recovery rate of the heavy minerals.It is used for separating particle size from 0.3 to 0.02 mm of materials,such asfine grained iron, tin, tungsten, tantalum, niobium, gold, coal, monazite, rutile and zircon as well as with sufficient proportion difference of other metals, non-metallic minerals etc.It is designed by our company and scientific research units basing advanced technology,which is used widely to determine the batch production.
Experimental Proof
when the pulp flow into the groove cutting edge vortex, it strengthened the stratification in loose, light precipitation of coarse mineral from the ore belt across the groove to move to outer edge, heavy mineral is lead to flow to the point along the groove bottom. The results decrease the amount of medium ore and improve the recovery of concentrate metal. The following table lists the comparison results of the industrial experiments of groove and non-groove spiral chute for the treatment of hematite grading and settling sand (a crude, a fine flow).
Model
Feed Grade
Concentrate
Middlings
Tailings
Recovery Of Concentrate
The classification efficiency
yield
grade
yield
grade
yield
grade
Add Grooving
33.48
35.27
55.23
29.20
27.02
35.53
17.19
58.18
38.53
No Grooving
33.68
33.97
53.67
38.02
27.61
28.01
17.66
54.13
32.26
Technical Data
Model
5LL-2000
5LL-1500
5LL-1200
5LL-900
5LL-600
5LL-400
Diameter(mm)
2000
1500
1200
900
600
400
Pitch(mm)
1200
720/540
900/720 /540
675/540 /405
450/360 /270
240/180
Pitch/Diameter
0.6
0.48/0.36
0.75/0.6 /0.45
0.75/0.6 /0.45
0.75/0.6 /0.45
0.6/0.45
Lateral Tilt Angle
9°
9°
9°
9°
Complaint
