English 
French 
Spanish 
Turkish 
Russian Application of High-Pressure Round Filter Press in Silica Sand Sludge Treatment
In the beneficiation process of silica sand ore, a large amount of mud and water is often used to mix it. A high-pressure round filter press can effectively dehydrate such materials and quickly form high-dryness filter cakes for subsequent transportation and disposal. The following section will analyze the application of a high-pressure round filter press in silica sand sludge treatment in detail, from the aspects of the working principle to the technical advantages.
Working Principle
A high-pressure round filter press is a device that uses high pressure to squeeze out the liquid in the material to achieve solid-liquid separation. Its circular structure design makes the filter cloth more evenly stressed and able to withstand greater pressure, which is conducive to improving the filter cloth thickness and extending the service life of the equipment.
Specific Process
Sludge feed preparation
The concentrated silica sand sludge is sent from the slurry mixing tank to the sludge storage tank; the sludge is transported to the filter press feed port by a high-pressure plunger pump or diaphragm pump.
Filter plate closing
Start the filter press, and the hydraulic system automatically presses the round filter plate; the filter cloth is clamped between the filter plates to form a sealed filter chamber.
Feeding and preliminary dehydration
The sludge enters the filter chamber under high pressure, and the liquid passes through the filter cloth to become filtrate, which is discharged through the drain valve; the solid particles gradually accumulate on the filter cloth to form a filter cake.
Unloading the filter cake
The pressure is released and the filter plate opens automatically; the filter cake falls off due to gravity or with the help of a vibration device and falls into the conveyor belt or collection bin.
Automatic filter cloth cleaning
Some filter presses are equipped with an automatic high-pressure washing system. The filter cloth is cleaned after each filter pressing cycle to prevent clogging and maintain filtration efficiency.
Advantages of Round Filter Press
High-dryness filter cake reduces post-processing costs
High-pressure pressing can control the moisture content of the filter cake below 30%, which not only reduces the transportation volume of silica sand but also facilitates subsequent heat treatment or direct sales.
Round filter plate design enhances equipment stability
Round filter plates are better than square designs in terms of force, especially under high-pressure operating conditions, and are less likely to cause eccentric wear or structural damage.
Fully automatic operation, saving labor costs
Many high-pressure round filter presses are equipped with automatic cake unloading, automatic filter cloth cleaning, and other functions, which are suitable for continuous operation, reducing the difficulty of operation and labor dependence.
Corrosion-resistant and wear-resistant materials
In the face of highly abrasive silica sand particles, the equipment can use polypropylene filter plates, stainless steel racks, etc. to ensure long-term stable operation.
Conclusion
The high-pressure round filter press has shown great potential in the field of silica sand ore processing due to its excellent dehydration efficiency and sturdy structural design. It has played a significant role in improving the quality of concentrate, reducing the volume of tailings, and optimizing the overall beneficiation process.
