Submerged Spiral Classifier

EPIC, a leading China factory and supplier, provides premium Submerged Spiral Classifier for precise ore grading and sand separation. This product features fully submerged overflow-end spirals, an automatic sand return device, and low-speed operation for energy efficiency. Widely used in ore dressing, gravity separation, and ore washing plants, it enhances milling efficiency, reduces maintenance, and adapts to various processing capacities from 50 to 1410 t/d. Its durable construction and simple operation make it a reliable solution for modern mineral processing.

Working Principle

The Submerged Spiral Classifier utilizes the principle that solid particles of different sizes and specific gravities settle at varying rates in liquids.

1. Fine Ore Particles: Float on the surface and overflow into the collection area.

2. Coarse Ore Particles: Settle to the bottom of the tank and are slowly pushed to the discharge end by the spiral.

3. Low-Speed Spiral Operation: Stirring the slurry ensures uniform particle suspension, allowing accurate overflow of fine materials and consistent discharge of coarse material as return sand.

Adjustable spiral speed and tank inclination allow operators to customize the grading process for different types of ore, optimizing efficiency and minimizing material loss.

Key Advantages

Efficient Particle Separation

The submerged design guarantees precise grading of ore with an overflow particle size of 0.07–0.15 mm. Fine particles float and are efficiently collected while coarse particles are conveyed by the spiral to the discharge port. This reduces reprocessing requirements and increases downstream recovery rates.

Enhanced Operational Reliability

The product is designed with simplicity in mind. Standardized components, durable materials, and a low-speed spiral reduce wear and tear. The automatic lifting device at the return sand end eliminates the traditional large shovel-head configuration used in ball mills, ensuring smoother operation and fewer interruptions.

Energy Saving and Long-Term Durability

Its low-speed rotation minimizes power consumption without compromising performance. High-strength steel and corrosion-resistant coatings extend the service life, even under continuous operation with abrasive slurries.

Versatile Capacity

The Submerged Spiral Classifier is suitable for a wide range of processing scales and mining environments. It can handle capacities from 50 t/d to 1410 t/d, making it adaptable for small-scale plants or large mineral processing operations.

Technical Specifications

Comparison with Conventional Classifiers

The Submerged Spiral Classifier provides several advantages over traditional overflow spirals:

1. Reduced Return Sand Issues: Automatic lifting device ensures continuous flow and prevents blockages.

2. Higher Grading Accuracy: Submerged spiral allows fine particles to overflow naturally, reducing misclassification.

3. Labor Efficiency: Unlike traditional classifiers requiring manual intervention, this product reduces operational labor and improves productivity.

4. Energy Efficiency: Low-speed spiral reduces power usage while maintaining high separation performance.

These advantages make it a reliable solution for modern mineral processing plants seeking efficiency, stability, and low maintenance costs.

Real-World Applications

· Closed-Circuit Ball Mills: Ensures separation of fine and coarse ore to optimize milling performance.

· Gravity Separation Plants: Enhances recovery of valuable minerals by accurately grading slurry.

· Ore Washing Operations: Facilitates desludging and coarse sand removal, improving water reuse and material handling.

· Custom Applications: Can be tailored for different ore types, overflow sizes, and plant layouts.

Operational Guidance

Proper operation ensures optimal performance:

· Maintain the spiral at low-speed settings to prevent excessive wear.

· Adjust tank inclination and overflow weir according to ore characteristics.

· Inspect the automatic lifting return sand device regularly to ensure continuous operation.

· Use standard maintenance procedures for bearings, spiral blades, and tank surfaces to maximize service life.

By following these guidelines, operators can achieve reliable, long-term operation and high mineral recovery rates.

Why Choose us

· Proven Engineering: Designed and tested in real mining conditions to ensure reliable performance.

· Durable Construction: High-strength steel, corrosion-resistant coatings, and low-speed operation reduce downtime.

· Operational Efficiency: Reduces manual intervention and optimizes mineral recovery.

· Customizable Solutions: Adjustable spiral speed, tank length, and diameter allow adaptation to different ore processing requirements.

· Trusted Manufacturer: EPIC has extensive experience providing mineral processing equipment worldwide with ISO9001:2015 certification and a strong reputation in global markets.

The Submerged Spiral Classifier from EPIC combines advanced design, practical mining experience, and high-quality manufacturing to deliver efficient ore grading, sand separation, and fine slurry management. Its submerged spiral configuration, low-speed operation, and automatic sand return device ensure high precision, stable performance, and long-term durability. By choosing this product, mining operations can achieve improved milling efficiency, reduced operational costs, and reliable performance—reinforcing EPIC’s commitment to excellence, innovation, and customer satisfaction worldwide.