LEFILTER | Key equipment for solid-liquid separation in industrial processes - filter press

Lefilter2026-01-30 BACK TO LIST

In the processes of mineral selection, chemical synthesis, food purification, and even urban sewage 

purification, the separation of solids and liquids is an important link that affects production continuity 

and environmental compliance. Filter press, as a widely used and technologically mature equipment in 

this field, has become a commonly used device in many industrial scenarios due to its robust design 

and continuously optimized performance.

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01 Equipment performance

The important role of a filter press is to provide relatively stable solid-liquid separation efficiency. Through 

precise pressure transmission and filtration structure design, a high solid content of the filter cake can be 

achieved, which helps to reduce resource consumption in subsequent processing steps. The main body of the 

equipment is usually constructed with high-strength materials, and key contact components such as filter 

plates and filter cloth are selected and processed through targeted materials and processes, aiming to 

extend the operating cycle under high pressure and high wear conditions and improve the overall availability 

of the equipment.

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02 Equipment characteristics


Automated operation

Integrate advanced control systems to achieve automatic sequential control of processes such as 

compression, feeding, pressing, drying, and unloading, reducing manual operation intensity and 

potential risks.


Modular structure

The design emphasizes space efficiency and maintainability, and the main components adopt a modular 

concept to facilitate daily maintenance work such as filter cloth replacement and filter plate maintenance.


Optimized unloading design

The improved surface treatment of the filter plate and the design of the unloading mechanism help to 

achieve a more complete and smooth peeling of the filter cake, reduce residue, and support continuous 

operation.


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03 Technical support


Strengthen the squeezing mechanism

By using a stable hydraulic or mechanical pressure system and combining some technical solutions with 

diaphragm secondary pressing, the initially formed filter cake can be deeply squeezed to further improve 

the dewatering effect.


Process Monitoring

By integrating sensors to collect key parameters such as pressure, flow rate, and operating status in real-time, 

the control system dynamically analyzes and adjusts them, optimizes operating conditions, and provides 

status feedback and warnings.


Special filter media

Adapting high-precision, wear-resistant, and anti clogging filter cloth or plate materials based on different 

material characteristics such as particle size, viscosity, and corrosiveness is an important factor affecting 

separation accuracy and filtrate quality.

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04 Equipment value


Filter press plays multiple roles in the industrial chain:


Realize material separation

Meet the process requirements for separating the physical state of materials in the production process, 

and provide downstream processes with qualified raw materials or intermediate products.


Promote optimization of resource utilization

The high solid content solid materials obtained from separation (such as concentrates and products) or 

clarified filtrate (such as process reuse water) can be effectively recovered and utilized, which helps to 

improve resource utilization efficiency.


Reduce disposal load

By producing drier solid residues such as sludge and tailings, the volume and weight of the final waste 

can be effectively reduced, reducing the burden on subsequent disposal processes.


Responding to environmental requirements

Assisting enterprises in processing solid waste associated with production, making it more compliant with 

relevant environmental regulations when discharged or transported for disposal, is one of the equipment 

that focuses on environmental protection in industrial production processes.


05 Widely used


The application scope of pressure filtration technology covers many basic industries and environmental 

protection fields:


Environmental protection: Sludge dewatering in municipal and industrial wastewater treatment plants 

(covering industries such as printing and dyeing, electroplating, papermaking, and chemical engineering).

Resource development: Dehydration of concentrates and dry discharge of tailings from metallic ores 

(copper, lead, zinc, etc.) and non-metallic ores (kaolin, bentonite, etc.).

Chemical industry: production, filtration, washing, and dehydration of pigments, dyes, catalysts, inorganic 

salts, and other products.

Food biology: starch and sugar processing, fermentation broth (such as amino acids and organic acids), 

solid-liquid separation of plant extracts.

Other fields: preparation of ceramic raw materials, processing of metallurgical intermediates, etc.


The continuous development of filter press technology provides strong equipment support for the efficiency 

improvement and sustainable transformation of industrial production. Its role in improving solid-liquid 

separation efficiency, optimizing resource utilization pathways, and responding to environmental compliance 

requirements has made it one of the noteworthy equipment in modern industrial systems.

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