LXYT Series Spiral Sand Washer with Integrated Fine Sand Recovery System

The LXYT Series Spiral Sand Washing & Fine Sand Recovery Integrated Machine represents a comprehensive solution for deep cleaning, precise classification, and high-efficiency recovery of fine sand in modern aggregate and mineral processing plants. By seamlessly integrating a high-performance spiral sand washer with an advanced fine sand recovery and dewatering system, the LXYT Series overcomes the inherent limitations of traditional sand washing equipment and sets a new benchmark for sand washing efficiency, material recovery, and environmental performance.

This equipment is specifically engineered for high-clay, high-viscosity, and compositionally complex materials that are difficult to clean using conventional methods. While traditional spiral sand washers are capable of producing relatively clean coarse sand, they often suffer from significant fine sand loss, high water consumption, and unstable product grading. The LXYT Series addresses these challenges through an innovative closed-circuit process of intensive washing, centrifugal separation, and high-frequency dewatering, ensuring exceptional cleanliness while maximizing the recovery of valuable fine particles.

The LXYT Series operates through a continuous and coordinated workflow described as:

Intensive Scrubbing → Centrifugal Separation → High-Frequency Dewatering → Precise Sand Recombination

This process ensures that both coarse and fine sand fractions are fully cleaned, efficiently recovered, and accurately blended to achieve an ideal particle size distribution in the final product.

The front section of the LXYT Series is built around a tilted spiral sand washing unit, designed to deliver prolonged soaking and high-intensity mechanical scrubbing.

U-shaped washing trough
Provides sufficient water retention time and flow stability, allowing clay, silt, and impurities to be fully loosened and dispersed.

Wear-resistant spiral shaft and blades
Manufactured from high-strength, abrasion-resistant materials, the spiral continuously agitates and lifts the sand, ensuring thorough frictional cleaning while maintaining long service life.

Drive system
A robust motor and reducer provide stable torque output, ensuring reliable operation under heavy load and high slurry concentration conditions.

Coarse sand dewatering discharge
Cleaned coarse sand is lifted to the upper end of the spiral and discharged with initial dewatering, forming the primary product stream.

Overflow box (critical interface)
Located at the tail end of the washing trough, the overflow box collects muddy water containing a large quantity of fine sand and directs it to the downstream recovery system.

The rear section is the core of the LXYT Series’ recovery capability, ensuring that fine sand previously lost in traditional systems is efficiently reclaimed.

Slurry pump
Pressurizes and conveys the fine sand slurry from the overflow box to the hydrocyclone group with stable flow and minimal energy loss.

Hydrocyclone group
Acts as the primary classification unit. Utilizing strong centrifugal force, it rapidly separates fine sand particles (typically 0.075–0.6 mm) from water and ultra-fine mud.

High-frequency linear dewatering screen
Receives the underflow from the hydrocyclones. Through high-frequency vibration, it performs final dewatering and secondary desliming, producing loose, low-moisture fine sand.

Fine sand mixing and return system
The recovered fine sand is precisely conveyed via chute or small belt conveyor and evenly blended with the coarse sand discharged from the spiral washer, forming a finished sand product with optimized grading.

Circulating water tank and clean water replenishment system
Hydrocyclone overflow water enters the settling tank, where clarified water is reused in the system, achieving closed-loop water circulation and reducing fresh water consumption.

The LXYT Series is widely used in high-standard and high-value sand and mineral processing projects, including:

Premium manufactured sand production lines
Ideal for producing high-quality sand for C50 and above high-strength concrete, UHPC (Ultra-High Performance Concrete), and specialty dry-mix mortars with strict requirements on grading, mud content, and moisture.

Concrete batching plants (on-site sand processing)
Serves as a critical quality control unit to stabilize incoming sand quality and ensure consistent concrete performance.

Purification and upgrading of high-clay natural sand
Efficiently cleans weathered sand, mountain sand, and tailings sand, converting low-grade raw materials into qualified or premium construction sand.

High-value mineral washing and tailings utilization
Suitable for scrubbing and purification of quartz sand, feldspar, kaolin, and for recovering valuable fine particles from tailings.

The LXYT Series is particularly suitable for 0–10 mm sand and aggregate materials with:

High clay content

Strong viscosity

Difficult-to-clean characteristics

It is a proven solution for processing “dirty, sticky, and fine” materials in demanding operating conditions.

Integrated washing and recovery design with minimal fine sand loss

Superior sand cleanliness and optimized particle grading

Low moisture finished sand, easy for storage and transportation

Reduced water consumption through closed-loop circulation

Stable operation and long service life in harsh environments