Laboratory Spiral Concentrator

Glass fiber reinforced plastic spiral concentrator is used for the concentration of fine-grained metallic minerals such as iron ores, titanic iron ores, chrome iron ores, pyrite, tungsten-tin ores, niobium-tantalum ores, alluvial gold ores, coastal monazite, rutile, zirconite, and other metallic and nonmetallic ores with enough differences in specific gravity.

                                                                    Laboratory Spiral Concentrator
1. The applications of laboratory Spiral Concentrator
Glass fiber reinforced plastic spiral concentrator is used for the concentration of fine-grained metallic minerals such as iron ores, titanic iron ores, chrome iron ores, pyrite, tungsten-tin ores, niobium-tantalum ores, alluvial gold ores, coastal monazite, rutile, zirconite, and other metallic and nonmetallic ores with enough differences in specific gravity.
Particle size range of effective concentration: Concentration of 0.2~0.03mm for Φ600 and Φ400. There should be spiral concentrator with corresponding parameters for first concentration, concentration and scavenging.
Glass fiber reinforced plastic spiral chute is a kind of high-efficiency gravity concentration equipment employing advanced technology that was developed in recent years. It is also award-winning equipment with outstanding performance and advanced mineral separation indexes that has been recognized by relevant state departments and can be mass produced, popularized and used.
Different specifications; Φ600, Φ400
Different pitch to diameter ratio: 0.6, 0.45
Different number of spiral heads: Single head, double heads, three heads, four heads
Select the characteristic parameters according to different mineral properties and particle sizes of metallic mines and nonmetallic mines, to better produce the concentration effects of equipment.

2. The features of laboratory Spiral Concentrator
2.1. The main structure of spiral chute section curve is cubic parabola. Besides, it is further optimized with correction chart (many powers) and lines, which overcomes the shortcomings including sand blockage and local damage of outer edge and allows selection of different parameters for different operation, to create concentration conditions of fine grains (improve the ability to recover the minerals of minimum particle size). It has now been used in many mines.
2.2. Lightweight and high-strength new materials (fiberglass reinforced plastic) are adopted for it, allowing one-step molding, accurate shape, and good surface wear-resisting property. It does not crack or tear. Its guarantee period is above five years.
2.3. Its structure is simple and its concentration process is stable. It is suitable for concentration of grains with medium and fine feed sizes and is easy for operation and control.
2.4. It is light in weight, needs no foundation, has flexible configuration, and can be installed and maintained easily.

3.The Technical parameters of laboratory Spiral Concentrator

4. Concentration Principle of laboratory Spiral Concentrator
Spiral Chute is to make separations of useful minerals from gangues by use of the different particles subject to gravity, hydraulic pressure and friction in the multi-force field through dynamic centrifugal flowing membrane of slurry produced on the inclined surface of spiral based on the differences of useful mineral and gangue in specific gravity, particle size and shape. Water in the spiral chute runs downward spiral movement and also flows in circulation transversely. Water in the upper layer run fast, generating centrifugal force with large inertia to toss toward the outer edge of the chute. Back-flow of water in the lower layer adjacent to the chute bottom runs slowly with small centrifugal force and flows from the outer edge to the inner edge with the action of gravity, generating secondary back-flow. Particles of heavy minerals in slurry settle rapidly and gradually move toward the inner edge along the converged helix prior to finally being produced as concentrate. Light minerals settle slowly and flow fast in the surface layer of ore flow with large centrifugal force and gradually move toward the outer edge along the expanding helix before finally being produced as tailings.