The Application of Spiral Press Filter Mesh in Mine Tailings Treatment

In the vast system of mining production, tailings treatment is often regarded as the “last link”, but it is directly related to the resource recovery rate, environmental safety, and economic benefits of enterprises. With the continuous strengthening of environmental policies and the increasing demand for resource utilization, how to efficiently dehydrate and reduce tailings has become a core issue of concern for mining enterprises.

In recent years, the Belt Press Filter has become an important equipment for tailings dewatering and solid-liquid separation due to its continuous, stable, and low energy consumption characteristics. In the operation system of the entire equipment, spiral press filter mesh plays a decisive role as the core medium for filtering and conveying.

Spiral Press Filter Mesh Tailings Treatment and Filtration Requirements

Tailings are fine-grained waste generated after ore beneficiation, with high moisture content, fine particle size, and easy blockage, making them a “stubborn problem” in the field of filtration and separation. Although traditional filter presses have high dehydration rates, they have long cycles, low automation levels, and large land occupation, making them unsuitable for continuous production. The belt press filter is widely used for tailings dewatering in iron ore, copper ore, gold ore, molybdenum ore, lithium ore, phosphate ore and other fields due to its advantages of continuous operation, large processing capacity, low energy consumption, and easy maintenance.

However, tailings slurry has the characteristics of strong viscosity and many fine particles. If the performance of the filter belt is poor, it is easy to encounter problems such as difficult cake peeling, high operating resistance, filter belt blockage and slippage. Therefore, a spiral press filter mesh with stable performance and excellent permeability has become the key to the long-term operation of the equipment.

Structure and Performance Advantages of Spiral Press Filter Mesh

Spiral press filter mesh is a continuous fabric based on spiral units and connected to each other through connecting wires or strips. Its unique structural design combines strength, breathability, and wear resistance.

• High Strength Structural Design
  The spiral press filter mesh is made of high-strength polyester monofilament, which has undergone heat setting and tension control processes, possessing excellent tensile strength and dimensional stability. It can still maintain smooth operation under long-term high-pressure dehydration conditions and is not easily deformed.
• Excellent Permeability and Cake Removal Performance
  The surface of the mesh belt is flat and smooth, with uniform pore structure, which can achieve rapid drainage and good cake stripping effect. Compared with traditional filter cloth, spiral press filter mesh is more suitable for continuous dehydration process of fine-grained materials, effectively reducing cake adhesion and secondary pollution.
• Strong Wear and Chemical Resistance
  The slurry often contains fine sand, metal ions, and chemical agents. The spiral press filter mesh is made of acid and alkali resistant, wear-resistant polyester or modified materials, which can significantly extend the service life of the filter belt, reduce replacement frequency and downtime costs.
• Stable Operation and Convenient Maintenance
  Due to the use of interface free or smooth joint design, the spiral press filter mesh operates with uniform force and stable tension, making it less prone to deviation. Modular structure facilitates quick on-site assembly and replacement, significantly reducing maintenance time.

Typical Applications of Spiral Press Filter Mesh in Belt Press Filter Machine

In the tailings treatment system of the mine, the belt press filter generally includes three stages: gravity dewatering zone, wedge-shaped preloading zone, and high-pressure pressing zone. spiral press filter mesh play different roles at each stage:

Gravity dewatering zone: The spiral press filter mesh provides good support and preliminary filtration channels, allowing the tailings slurry to freely drain and form a controllable thickness filter layer;
Wedge preloading zone: The filter belt is subjected to gradually increasing pressure, and the spiral structure allows for more uniform discharge of moisture inside the filter cake, preventing material overflow;
High pressure squeezing zone: Under the action of multiple high pressures, the spiral press filter mesh remains flat, resistant to tension and deformation, ensuring that the moisture content of the filter cake is reduced to the ideal range (usually below 25%).
Part of the metal ore tailings, coal preparation tailings or non-metallic ores can be directly stored or transported after being dehydrated by a spiral press filter mesh press filter, achieving dry discharge or comprehensive utilization of tailings.

Energy Saving and Environmental Protection Benefits of Spiral Press Filter Mesh

Compared with the plate and frame filter press, the belt press filter combined with the spiral press filter mesh consumes only about 40% -60% of its operating energy, and achieves continuous dehydration, unmanned operation, and water-saving circulation.
In practical applications:

The water recovery rate can be increased by over 90%;
The moisture content of the filter cake decreases by about 5% -10%;
The service life of the filter belt is extended by more than 30%.
These data indicate that the spiral press filter mesh is not only a “consumable”, but also a key component for improving overall energy efficiency and environmental protection in tailings dewatering systems.

Conclusion

Spiral press filter mesh, as the core “bloodline” of belt press filter, is becoming an indispensable key material in mining tailings treatment systems.
Its high strength, wear resistance, and stable dewatering performance make the separation of every drop of slurry more efficient and environmentally friendly.
Against the backdrop of tailings dry discharge and green mining, the application of spiral press filter mesh is continuously expanding, injecting solid impetus into the sustainable development of the mining industry.