PGT (ZPG, GPT) Disc Vacuum Filter
The disc vacuum filter, as a new type of filtration equipment, breaks through the problems of high energy consumption, harsh working environment, frequent failures, and high operation costs associated with the traditional intermittent operation process of pressure filters. It achieves low moisture content in the filter cake, clear filtrate, and continuous production without reducing output while cleaning the filter cloth under high vacuum. With low investment cost and high production efficiency, it has been widely applied and promoted in the treatment of ore tailings.
Tailings comprehensive treatment methods
The tailings from the mine, containing a large amount of water, are thickened in a thickener before being fed into a disk vacuum filter for separation. The filtered cake can be directly dried and stacked for storage. The supernatant from the thickener and the filtrate from the filter are filtered and reused. If the particles are very fine, they are thickened with an appropriate amount of flocculant through a dosing unit before being filtered in the disk vacuum filter.

Technical Features
The tank, serving as a container for material slurry and a load-bearing support for equipment, plays a crucial role in product stability due to its sturdy and durable structure. By adding an alumina polymer wear-resistant coating at the bottom of the tank, the issue of easy wear on the tank is fundamentally resolved.
2. Designed for tailings with high friction coefficients and large particle sizes, and fast settling speeds, the filter fan enhances its strength by utilizing high-intensity wear-resistant materials and thickened wall thickness. This strengthens the surface's resistance to wear, thereby extending the lifespan of the filter fan.
3. The cross-section of the filtrate tube is large, and the cavity volume of the distribution head is substantial, which enhances the suction rate and the efficiency of filtrate discharge.
4. Filter tubes are made of high-strength, wear-resistant ceramic composite steel pipes or stainless steel pipes, which are resistant to corrosion.
Each filter blade is secured with a pressure plate, featuring bolts made of stainless steel to prevent rust and facilitate easy removal.
6. The mixer employs a Teflon seal, achieving a multi-composite seal with water-tight and imported packing material, ensuring no leakage of minerals. It also utilizes a dual-composite form of mechanical and air mixing or an optional single method, depending on the particle size of the material, to overcome sedimentation.
7. The control disc and friction disc are made of high-wear resistance boron phosphorus cast iron. The control disc features a involute form airway. The discs are lubricated with yellow grease, offering a balance between flexibility and rigidity, excellent sealing, and a service life of over three years.
8. Centralized multi-point automatic lubrication of the dry oil pump ensures the normal operation of the equipment.
9. As a filtering medium, filter cloths accumulate residues in their surface capillaries after use, which affects their filtering properties. Regular high-pressure cleaning is essential to maintain their good air permeability. Our company's filter machines are equipped with an automatic filter cloth cleaning system. The cloths are cleaned on a continuous basis, ensuring that cleaning is done while the machine is in operation. Additionally, the filter cloths are regenerated and recycled using hot water and alkali solutions to preserve their excellent air permeability and product dehydration efficiency.
10. Utilizes variable frequency speed control, adjusting to the concentration and flow of materials for optimal working performance.

Application Scope
This series of disk vacuum filter is mainly used for the dewatering of tailings from various mineral processing operations, and is also suitable for river sediment, reservoir silt, construction materials, chemical industry, and other fine-grained materials.