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Filter cloth, horizontal vacuum belt filter, new energy lithium electrolysis
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Detailed Description
- Filter cloth, horizontal vacuum belt filter, lithium electrolyte for new energy
Filter type: Horizontal vacuum belt filter
Application industry: New energy
Material description: Electrolyte lithium
Filter cloth model: FDTF-1
Key application of filter cloth technology in the filtration of electrolyte lithium materials —— Solutions in horizontal vacuum belt filter
With the rapid development of the new energy industry, the purification and finished product dehydration of electrolyte lithium materials (such as lithium carbonate and lithium hydroxide) have put forward higher technical requirements for filtration equipment and materials. As a core component of the solid-liquid separation system, Industrial filter cloth plays a crucial role in the entire lithium extraction and post-processing process. Especially in horizontal vacuum belt filter the performance of the filter cloth directly determines the filtration accuracy, production efficiency, and stability of product quality.
I. Application background: Filtration challenges of electrolyte lithium
Electrolyte lithium production mostly uses salt lake brine lithium extraction and spodumene roasting lithium extraction processes. Its post-processing process usually includes multiple steps such as precipitation, crystallization, filtration, washing, and drying. Among them, filtration and washing are the key bridges connecting the wet process and the drying process.
- Fine particles, high viscosity : The lithium salt crystals in the electrolyte have a small particle size and are easy to block the cloth;
- Corrosive liquid : Some process liquids are alkaline or contain chemical components such as fluorine and sodium;
- Continuous operation pressure : Under high-intensity production scenarios, the filter cloth needs to have excellent durability and cleanability.
II. Characteristics of horizontal vacuum belt filter
This equipment is suitable for large-scale continuous processing, especially for handling materials with moderate solid content and high washing requirements. Its working principle relies on the movement of the filter cloth and the vacuum chamber to achieve automated material spreading, continuous filtration, filter cake washing, vacuum dehydration, and integrated discharging operations.
Core technical requirements include:
- The filter cloth must be able to withstand negative pressure operation (vacuum degree can reach -0.04~-0.08 MPa );
- Ensure good filtration speed and liquid permeability;
- The filter cloth should have excellent dimensional stability and tensile strength to prevent wrinkling and deviation during operation.
III. Technical indicators and functional characteristics of filter cloth
In electrolyte lithium filtration, the filter cloth is not only a medium material, but also bears multiple responsibilities such as filtration accuracy, washing uniformity, and filter cake shedding efficiency. In response to industry needs, professional filter cloth manufacturers (such as Xiamen Citius) have developed a series of high-performance dedicated filter cloth solutions with the following characteristics:
Technical parameters
|
Requirements / Performance
|
|---|---|
Filtration accuracy
|
1~20 μm Optional multi-layer weaving structure
|
Air permeability
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High air permeability design to ensure efficient filtration
|
Chemical resistance
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Resistant to sodium hydroxide, sodium chloride, lithium sulfate, etc.
|
Tensile strength
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Supports high-speed operation and long-term tension
|
Surface structure
|
Modified treatment to improve filter cake separation and anti-blocking ability
|
IV. Typical application effects
In the actual application of a lithium battery material company, after replacing the traditional filter cloth with Xiamen Citius customized filter cloth:
- Filtration efficiency increased by about 15%；
- The service life of the filter cloth is extended to 1.5 times the original ；
- The clarity of the filtrate is better than the previous standard, and the residual liquid content of the filter cake has decreased by more than 20%；
- Stable continuous operation, reducing replacement frequency and maintenance costs.
V. Future trends and suggestions
With the further refinement of lithium battery material particle size and the strengthening of environmental protection regulations, filter cloths will continue to be optimized in the following directions:
- Development Multi-layer composite filter cloth with stronger ultra-fine particle interception ability; Using
- Low resistance and high air permeability structural design to improve filtration rate; Realize the
- green recyclability and reuse of filter cloth materials ；
- Intelligent filtration equipment to achieve filter cloth status monitoring and automatic tension adjustment.
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