Fiberglass Reinforced Plastic Spiral Chute

High-Efficiency Fiberglass Spiral Chute Separator

The Fiberglass Spiral Chute is a high-efficiency gravity sorting device that combines the technical advantages of a traditional spiral concentrator, shaking table, and centrifugal concentrator into one simple, continuous process. Operating entirely without electricity, this Gravity Spiral Concentrator uses the natural forces of gravity, centrifugal action, and water flow to separate minerals based on their specific gravity.

Recognized with the Scientific and Technological Research Achievement Award by the Ministry of Metallurgy, our Spiral Chute Separator features excellent sorting indices and high enrichment ratios. It is perfectly suited for upgrading fine-grained minerals ranging from 0.3mm down to 0.02mm.

Manufactured from lightweight yet incredibly strong Fiberglass Reinforced Plastic (FRP), this Mineral Spiral Separator is rust-proof, wear-resistant, and highly adaptable to fluctuations in feed volume and concentration, making it the ideal choice for massive-scale heavy mineral processing.

Core Advantages of Our FRP Spiral Chute

• Zero Power Consumption: Relies entirely on gravity and hydrodynamic forces. With no moving parts, motors, or drives, it operates with zero energy consumption, resulting in the lowest possible OPEX in the mineral processing industry.
• Adamantine Surface Treatment: The inner surface of the fiberglass spiral is treated with an adamantine (corundum/emery) wear-resistant coating. This not only extends the life of the equipment but creates the exact micro-friction needed to effectively catch heavy minerals.
• Highly Durable & Anti-Corrosive: The FRP (Fiberglass Reinforced Plastic) construction makes the equipment completely immune to rust and corrosion, making it perfect for coastal placer mining where saltwater is used for processing.
• Space-Saving Vertical Design: Spirals are stacked vertically around a central column, allowing for massive processing capacities within an extremely small factory footprint.

How a Spiral Separator Works

The separation process occurs naturally as the slurry flows down the helical path of the chute.

1. Slurry Feeding: The mineral slurry is pumped to the top distributor, which evenly feeds the slurry into the individual spiral chutes.
2. Centrifugal & Gravity Stratification: As the slurry accelerates down the spiral, centrifugal force pushes the lighter, lower-density particles (tailings) toward the outer edge of the chute where the water flows fastest.
3. Heavy Mineral Concentration: The heavier, high-density minerals settle into the slower-moving water layer and are drawn inward toward the central column due to friction and gravity.
4. Separated Discharge: At the bottom of the spiral, adjustable splitters seamlessly divide the stream into three distinct discharge ports: Concentrate (inner), Middlings (center), and Tailings (outer).

Applicable Minerals

Spiral concentrators are highly effective for processing fine-grained materials (0.3 - 0.02 mm) with sufficient specific gravity differences:

• Heavy Mineral Sands (HMS): The industry standard for separating Zircon, Rutile, Ilmenite, and Monazite from beach sands.
• Ferrous Metals: Upgrading fine Iron ore, Chromite, and Sulfide iron ore.
• Non-Ferrous & Rare Metals: Roughing separation of fine Tungsten, Tin, Tantalum, and Niobium.
• Non-Metallic & Environmental: Phosphorite processing, coal washing, and tailings reprocessing.

Technical Parameters (SLL Series)

We offer spirals ranging from 400mm (for lab/fine testing) up to massive 2000mm diameters for high-capacity industrial plants. Note: The path ratio is the ratio of pitch to helix diameter; different pitches are available based on the specific mineral settling dynamics.

Frequently Asked Questions (FAQ)