Spiral Chutes

Spiral chutes are gravity-based separation equipment used to separate minerals based on density differences. They are commonly used for coal, iron ore, chromite, and other mineral beneficiation processes.
Engineering Overview
Metzix Gravity Spiral Concentrators are cost-effective, high-capacity separation units that exploit differential density, centrifugal force, and fluid shear without consuming electrical energy. Slurry descends helical fiberglass troughs, causing heavier particles to migrate inward while lighter minerals wash towards the outer perimeter. With precisely engineered pitch angles, custom splitter cutters, and durable polyurethane wear linings, Metzix spirals achieve razor-sharp mineral cut points across fine particles from 0.03 mm to 2.0 mm.
Key Features & Engineering Advantages
Performance & Economic Benefits
Zero operational power consumption — 100% gravity driven operation
Low capital and maintenance costs with no moving mechanical parts
High resistance to corrosive acidic slurries and extreme abrasion
Compact footprint utilizing vertical headroom in multi-stage wash plants
Technical Specifications
Engineered Standards| Design Parameter / Specification | Technical Standard / Value |
|---|---|
| Helix Diameter | 600 mm to 1,000 mm |
| Number of Turns | 3.5 to 7 turns per column |
| Configuration | Single, Twin, Triple, or Quadruple starts |
| Feed Solids Range | 25% to 45% solids w/w |
| Feed Particle Size | 0.038 mm to 2.0 mm |



