gold equipment mineral spiral chute machine

A gold equipment mineral spiral chute machine is a gravity separation device used in mineral processing, particularly effective for recovering fine-grained gold and other heavy minerals like tin, tungsten, and iron ore. Here’s a detailed overview:

Key Features & Working Principle:

1. Gravity-Based Separation:
– Uses centrifugal force and gravity to separate heavy minerals (e.g., gold) from lighter gangue materials based on density differences.
– No chemicals or external power required (water flow may be needed).

2. Spiral Design:
– Multi-turn helical chute (typically 4–6 turns) with a declining slope.
– Heavy particles settle inward due to centrifugal force, while lighter materials are washed outward.

3. Applications:
– Ideal for placer gold, alluvial deposits, beach sands, and other fine-grained ores (<2mm).
– Often used in combination with shaking tables or centrifugal concentrators.

4. Advantages:
– Low energy consumption, simple operation, and high recovery rate (~90% for gold under optimal conditions).
– Compact structure, easy installation/maintenance.

5. Limitations:
– Less effective for coarse particles (>5mm) or ultra-fine slimes (<0.02mm).
– Requires consistent feed density and water flow control.

—

Common Specifications:

• Models: Single or double spiral chutes (e.g., FLG series).
• Material: Fiberglass or polyurethane coating for wear resistance.
• Diameter: Ranges from 400mm to 1200mm per spiral turn.



—

Typical Setup:

1. Feed Preparation: Crushed/classified ore mixed with water enters the spiral’s top.
2. Separation Process: Heavy minerals (gold) collect in inner grooves; tailings exit the outer edge.
3. Concentrate Collection: Multiple ports along the spiral allow adjustable product grades.

—

Where to Use It?

• Small-scale mining operations (portable units available).
• Roughing/scavenging stages before finer concentration methods (e.g., shaking tables).

For optimal performance, pair with a trommel screen or jig to pre-classify feed material.

Would you like recommendations on suppliers or specific technical parameters?