Lithium battery new energy industry Applications and Advantages of Filter press

Filter presses are widely used in the lithium battery new energy industry. Their efficient solid-liquid separation capabilities, energy-saving and environmental protection characteristics, and intelligent technology advantages make them the core equipment in the production and recycling of lithium battery materials.

The following is an analysis of the specific applications and advantages of filter presses in the lithium battery new energy industry:

1. Lithium salt extraction (lithium extraction from salt lakes, lithium extraction from spodumene, and lithium extraction from mica)
In the process of lithium resource extraction, the filter press significantly improves the purity of lithium oxide by efficiently separating solid impurities (such as magnesium, calcium, etc.) from lithium-containing brine. For example, in the process of lithium extraction from salt lakes, the filter press can concentrate and dehydrate the brine to form high-purity lithium salts to meet the production needs of lithium battery positive electrode materials.

2. Preparation of positive electrode materials
 Filter presses are used for filtering and washing positive electrode materials (such as manganese tetraoxide, lithium iron phosphate, and ternary materials). Through the filter press process, impurity ions in the precursor slurry can be removed to improve the electrochemical properties of the material. For example, during the filtration process of manganese tetraoxide, the filter press can prepare dry mud cakes with low moisture content to improve the subsequent sintering efficiency.

3. Graphite negative electrode material processing
 In the production of graphite negative electrodes, the filter press is used to dehydrate the graphite slurry, remove excess water and impurities, and ensure the conductivity and structural stability of the negative electrode material. Its high pressure resistance and multi-layer filter cloth design can meet the needs of fine separation of graphite particles.

4. PVDF resin material production
 PVDF (polyvinylidene fluoride) is an important raw material for lithium battery separators and binders. During the synthesis of PVDF resin, the filter press removes unreacted monomers and by-products through solid-liquid separation to ensure the high purity and consistency of the material.

5. Electrolyte material purification
 The preparation of the electrolyte requires the removal of impurity particles and moisture. The filter press ensures the cleanliness of the electrolyte through precision filtration, prevents internal short circuits in the battery, and improves the battery cycle life.

6. Lithium battery recycling
 In the recycling of waste lithium batteries, the filter press is used to separate and purify the black powder (containing metals such as lithium, cobalt, and nickel) after crushing. Its low energy consumption and high filtration efficiency can effectively recover valuable metal compounds and reduce resource waste.

7. Wastewater treatment and resource utilization
 Wastewater from lithium battery production contains heavy metals and organic matter. The filter press can reduce the amount of sludge through solid-liquid separation, and recycle clean water for recycling. For example, in the treatment of waste concrete, the sand and water separated by the filter press can be reused in the production line to reduce environmental pollution.

8. Energy saving and environmental protection advantages
 The filter press does not need to add chemical agents during operation to avoid secondary pollution. Its low energy consumption characteristics (such as the comprehensive energy consumption of Jingjin equipment products is reduced by 30%) significantly reduce the carbon footprint, which meets the green development needs of the new energy industry.

9. Automation and intelligent control
 Modern filter presses are equipped with intelligent control systems that can automatically adjust parameters such as pressure and filtration time according to material characteristics. For example, Jingjin Equipment uses AI technology to optimize the filtration efficiency of lithium extraction from salt lakes and improve production stability.

10. High processing capacity replaces traditional equipment
 Compared with centrifuges, filter presses have larger processing capacity and better filtration effects, and have gradually become mainstream equipment in the lithium battery industry. Its modular design supports customized needs and adapts to production line layouts of different scales.

11. Corrosion resistance and high temperature adaptability
 Filter presses made of stainless steel or special coating materials can withstand strong acids, strong alkalis and high temperature environments, and are suitable for the treatment of corrosive materials such as electrolytes and cathode material precursors.

12. Low moisture content of filter cakes and resource recovery
 Filter presses can reduce the moisture content of sludge to below 30%, which is convenient for subsequent drying or direct resource utilization. For example, metal filter cakes in lithium battery recycling can be directly used for smelting to reduce processing costs.

Summary
 Filter presses play a key role in the entire industrial chain of the lithium-ion new energy industry. From raw material extraction to battery recycling, their high efficiency, energy saving, and intelligent features significantly improve production efficiency and resource utilization. With the continuous expansion of lithium battery production capacity (global production capacity is expected to exceed 2,300GWh in 2025), the filter press market will usher in greater development space and become an important support for the upgrading of new energy technology.