Special spiral chute for coal mines

Spiral diameter: 600-1500 mm

Processing capacity: 5-50 t/h

The coal mine-specific spiral chute is a device used for coal separation, primarily designed to efficiently separate coal from gangue, impurities, and other materials. Based on the separation principles of gravity, centrifugal force, and water flow, it features a simple structure, easy operation, and strong adaptability. It is widely used in rough and fine coal separation operations in coal mines.

Applicable materials: minerals such as coal, iron ore, and gold ore

Product Introduction

The coal mine-specific spiral chute is a device used for coal separation, primarily designed to efficiently separate coal from gangue, impurities, and other materials. Its design is based on the separation principles of gravity, centrifugal force, and water flow, and it features a simple structure, easy operation, and strong adaptability. It is widely used in rough and fine coal separation operations in coal mines.

Working principle

The working principle of the spiral chute specifically designed for coal mines primarily relies on the combined effects of gravity, centrifugal force, and water flow to achieve the sorting of coal mine materials. The following provides a detailed explanation of its working principle:

1. Material entry and distribution

Coal mine materials (such as raw coal, gangue, etc.) are uniformly fed to the top of the spiral chute through a feeding device. When the materials enter the chute, they mix with water to form a slurry.

2. Helical motion and stratification

The slurry flows downwards along the spiral track in the spiral chute, and under the action of gravity and centrifugal force, the material begins to stratify:

- Due to gravity, denser materials (such as gangue, metallic minerals, etc.) tend to move closer to the outer edge of the spiral chute.

Materials with smaller degrees (such as coal) are closer to the inner side of the spiral chute.

3. Sorting and separation

On the spiral track of the spiral chute, the combined action of water flow and centrifugal force further enhances the sorting effect:

- The water flow pushes the lightweight material (coal) inward, causing it to flow downwards along the spiral track.

- Heavy materials (such as gangue) are thrown to the outside and eventually discharged from the bottom of the spiral chute.

4. Collection and output

- After sorting, the coal and gangue are discharged through different outlets of the spiral chute, achieving efficient separation.

- Coal is usually collected from the inner outlet of the spiral chute, while impurities such as gangue are discharged from the outer outlet.

5. Circulating water system

Spiral chutes are typically equipped with a circulating water system, allowing the water used during the sorting process to be recycled and reused, thereby reducing water consumption and meeting environmental protection requirements.

Technical Parameters