Sand De-sliming Machine

1.Product Introduction

A Sand De-sliming Machine is industrial equipment specifically designed for the sand and aggregate industry. Its primary function is to perform de-sliming, dehydration, and classification on the sand-water mixture generated during the sand washing process. It effectively recovers fine particles (such as fine sand below 0.16mm) that are typically lost in traditional sand washers. This significantly reduces the stone powder content in tailings, improves the grading and quality of the finished sand, and lessens the burden on wastewater discharge and sedimentation ponds. It is a key piece of equipment for achieving green and efficient sand production.

2.Application

1. Manufactured Sand Production Lines: Recovers fine sand lost during washing, improves the fineness modulus of the finished product, and increases the qualification rate.

2. Hydropower Stations & Construction Aggregate Processing: De-slimes and dehydrates aggregates to meet the high standards required for concrete raw materials.

3. Mineral Processing & Tailings Treatment: Dehydrates and de-slimes tailings slurry to achieve resource recovery and environmentally friendly discharge.

4. Coal Washing Plants: Recovers coarse coal slime to improve coal utilization efficiency.

5. Ceramics & Glass Raw Material Processing: Performs precision de-sliming and dehydration for materials like quartz sand and zircon sand.

6. Environmental Engineering: Used in sewage treatment scenarios such as sludge dewatering and mud purification.

3.Working Principle

The equipment generally utilizes a combined "Hydrocyclone + Vibrating Dewatering Screen"process:

• Cyclonic Separation: The sand-water mixture is pumped at high pressure into the hydrocyclone via a slurry pump. Using the principle of centrifugal sedimentation, coarse particles and fine sand (due to their higher density) are flung against the walls and spiral downward to be discharged from the apex (bottom nozzle). Fine mud and most of the water, having lower centrifugal force, are discharged from the overflow at the top.
•  Vibrating Dehydration: The high-concentration material from the hydrocyclone's apex enters a linear vibrating screen (usually fitted with polyurethane mesh). Under high-frequency vibration, the material is further dehydrated; water passes through the mesh, and clean fine sand is discharged from the end of the screen deck.
•  Circulation & Recovery: A small amount of mud and water that was not completely separated returns to the cleaning tank via a return box, forming a closed-loop cycle for highly efficient recovery.

4.Advantages

1. Highly Efficient Recovery: The fine sand recovery rate can reach 85%–95%, reducing the fine sand loss rate from the traditional 5%–25% to within 5%–10%.
2. Quality Improvement: Significantly enhances the grading and fineness modulus of the finished sand, boosting the market competitiveness of manufactured sand products.
3. Energy Saving & Eco-Friendly: Reduces wastewater discharge and the frequency of sedimentation pond cleaning; lowers energy consumption by 10%–20%, enabling green production.
4.  Durable & Reliable: Key components (hydrocyclone liners and screen mesh) are made of wear-resistant materials like polyurethane, ensuring a long service life and low maintenance costs.
5. Modular Design: Compact structure with a small footprint. It can be flexibly integrated into existing sand washing lines and supports customized production.
6. High Economic Value: The recovered fine sand can be sold directly, significantly increasing economic benefits and providing a high return on investment (ROI).

5.Technical Specifications

6.Our Solutions