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Is the slurry at your sand and gravel plant constantly under pressure? Why does the filter cloth on your plate-and-frame filter press consistently fail to form a filter cake? Citius Filtration Technology has the solution!
Release time:
2026-06-12
With the rapid growth of the manufactured sand, construction aggregate, and mining‑sand‑and‑gravel industries, coupled with increasingly stringent environmental regulations, the large volumes of slurry wastewater generated during sand and gravel production have become a critical issue that companies must address. Achieving efficient solid–liquid separation, increasing the solids content of the filter cake, and reducing operating costs have thus emerged as core concerns for many sand and gravel producers.
Among the many solid–liquid separation devices, plate-and-frame filters are widely used in sand‑washing and tailings‑sludge treatment systems due to their high filtration accuracy, low moisture content in the filter cake, and compact footprint. However, in actual production, filtration performance often depends not only on the equipment itself but is also closely linked to the characteristics of the filter cloth.
I. What challenges does sand, gravel, and slurry filtration face?
The sludge generated in the sand and gravel industry primarily originates from sand washing, sand production, and tailings‑treatment processes. It is typically characterized by a complex composition of solid particles and a broad particle-size distribution.
Sediment concentration fluctuates significantly;
Long-term continuous operation places high demands on the wear resistance of the filter cloth.
Frequent cake detachment can easily damage the filter cloth.
In actual operations, many enterprises frequently encounter the following issues:
1. Filter velocity decreases
Fine particulate sediment readily clogs the pores of the filter cloth, increasing filtration resistance, prolonging the filtration cycle, and reducing the equipment’s processing capacity.
2. The cake moisture content is relatively high.
When the filter cloth’s structural design is suboptimal, the efficiency of filtrate discharge declines, and the moisture content of the filter cake struggles to reach the desired level, thereby compromising subsequent transportation and disposal.
3. The filter cloth is severely worn.
Sand and gravel particles are highly abrasive, and conventional filter fabrics tend to suffer from wear, punctures, and yarn breakage over prolonged operation, leading to increased replacement frequency.
4. Filter cloth clogging is difficult to clean
Some ultrafine particles in the slurry can penetrate deep into the fiber structure, causing blockages that impair the filter cloth’s air and water permeability.
5. Short service life and high operating costs
Frequent replacement of filter cloths not only increases procurement costs but also prolongs downtime for maintenance, thereby reducing overall production efficiency.
II. The Key to Enhancing the Performance of Plate-and-Frame Filters: Selecting the Appropriate Filter Cloth
When upgrading their filtration systems, many companies tend to focus primarily on the filter press brand and the level of automation, while overlooking the critical role of filter cloth as the core filtration medium.
In fact, the filter cloth directly determines:
Filtration accuracy;
Clarity of the filtrate;
Filter cake formation rate;
Cake moisture content;
Equipment processing capacity;
Operating costs.
Accordingly, high-performance filter cloths have become a critical factor in enhancing the operational efficiency of plate-and-frame filter presses.
III. How does Citius filter cloth from Citius address the challenges of sand and gravel filtration?
As a company dedicated to the research, development, and manufacturing of industrial filtration materials, Xiamen Citius has developed high-performance filter cloth solutions tailored for plate-and-frame filter presses, specifically addressing the operational characteristics of the sand and gravel industry.
1. Optimize the weaving structure to enhance filtration efficiency.
Citius filter cloths are engineered using specialized weaving techniques; by precisely controlling pore size distribution and surface structure, they ensure effective particle retention while enhancing filtrate flow efficiency.
Its advantages are as follows:
The filter cake forms rapidly;
The filtration cycle has been shortened;
Increased throughput per unit time;
The filtrate clarity is stable.
For fine sand recovery and slurry dewatering operations, it can effectively enhance overall production efficiency.
2. Excellent permeability, reducing the moisture content of the filter cake.
During plate-and-frame filtration, the rapid discharge of filtrate is a critical factor in producing filter cakes with low moisture content.
Citius filter cloth exhibits excellent water permeability and drainage performance, helping to form a uniform and stable filter cake structure and enhancing dewatering efficiency.
For enterprises engaged in the treatment of sand and gravel tailings, this can effectively reduce the costs associated with filter cake transportation and stockpiling.
3. High-strength, wear-resistant design to withstand demanding operating conditions.
Long-term scouring by sand and gravel particles causes extremely severe wear to the filter cloth.
Citius filter cloths are made from high-strength industrial filament materials and feature:
Excellent wear resistance;
Good tear resistance;
Higher dimensional stability;
It remains deformation-free during long-term operation.
Even under high-load, continuous production conditions, it can maintain stable filtration performance and extend its service life.
4. Excellent cake release performance
Incomplete cake release is a common issue in the operation of many filter press systems.
Citius has optimized the surface microstructure of the filter cloth, facilitating easier release and shedding of the filter cake and reducing residual cake buildup.
Its advantages include:
Reduce the frequency of manual cleaning;
Reduce downtime for maintenance;
Improve the continuous operating efficiency of equipment.
5. Stable and durable, reducing overall operating costs.
For sand and gravel enterprises, filter cloth is not only a consumable but also a key factor influencing overall operating costs.
Citius filter cloths help businesses achieve the following by extending service life and enhancing filtration stability:
Reduce the frequency of filter cloth replacement;
Reduce spare parts inventory pressure;
Reduce downtime for maintenance;
Increase equipment utilization.
From a full lifecycle perspective, it can significantly reduce overall operating costs.
IV. Conclusion
As green mine development and environmental protection standards continue to rise, the sand and gravel industry is placing increasingly stringent demands on slurry‑treatment systems. As a key solid–liquid separation device, the performance of plate-and-frame filter presses relies heavily on high‑quality filter cloths.
Faced with challenging operating conditions—such as severe abrasion, high solids concentrations, and fine particulate sediments—Xiamen Citius Citius leverages its expertise in advanced filtration material R&D and extensive industry experience to deliver filter cloth solutions that are more stable, efficient, and durable for sand and gravel producers.
In the future, as the sand and gravel industry continues to evolve toward greater efficiency and environmental sustainability, high-performance filter fabrics will play an increasingly vital role in enhancing filtration performance, reducing operating costs, and enabling green production.
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