Spiral Chute

Details Introduction

The spiral chute is a mineral processing device that creates a centrifugal flow film on its inclined spiral surface, leveraging differences in specific gravity, particle size, and shape between valuable minerals and gangue. Within the combined force field of gravity and centrifugal force, separation is achieved by exploiting the varying gravitational forces, hydrodynamic pressures, and frictional resistances acting on different particles.

Spiral chutes are ideal for processing fine-grained iron ore, ilmenite, chromite, pyrite, zircon, rutile, monazite, phosphorite, tungsten ore, tin ore, tantalum ore, and niobium ore with particle sizes ranging from 0.3 to 0.02 millimeters, as well as other non-ferrous metals, rare metals, and non-gold minerals with differing densities.

Working Principle
The spiral chute is primarily composed of six components: a feed distributor, a feed trough, a spiral trough, a concentrate discharge trough, a receiving hopper, and a support frame.

When slurry of a specific concentration is fed into the upper section of the spiral separator, it rotates downward along the spiral trough. Coarser ore particles settle first at the bottom of the trough, while finer particles flow in the upper layer of the slurry. Due to the differing trajectories of ore particles with varying densities within the chute, particles of different densities can be intercepted at distinct positions along the spiral, achieving effective separation. Additionally, the water flow dynamics within the spiral chute facilitate material mixing and uniform distribution, thereby enhancing mineral processing efficiency.

Features
1. The end of the spiral chute separately intercepts fine concentrates, middlings, and tailings.
2. No flushing water is added during the selection process.
3. Spiral blades are constructed from fiberglass, offering lightweight strength and durability.
4. Spiral chutes feature high processing capacity, simple structure, and low operating costs.