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Advancing the LiFePO₄ Industry with Filtration Technology
Release time:
2025-11-11
In the context of the new energy era, iron phosphate (FePO₄) ₄ ） It is quietly becoming a strategically important basic material. It is not only Lithium iron phosphate (LiFePO₄) ₄ ) The precursor of cathode materials serves as a vital bridge connecting new-energy power batteries, energy-storage systems, and chemical raw materials. Driven by both policy support and industrial upgrading, China's iron phosphate industry is undergoing a profound transformation—from "volume-driven growth" to "quality-focused competition."
I. What is Iron Phosphate: An Underestimated "Energy Precursor"
Iron phosphate, also known as Ferric phosphate or ferric orthophosphate It is a white or pale-red crystalline powder that dissolves in hydrochloric acid and sulfuric acid, but is insoluble in cold water and nitric acid. With its high chemical stability and excellent electrochemical performance, it serves as an important foundational material for lithium-ion battery cathodes.
Based on differences in chemical properties and structure, iron phosphate can be classified into Ferrous orthophosphate (FePO₄) ₄ ） 、 Iron phosphite (Fe ₃ (PO ₃ ) ₂ ) and iron metaphosphate (Fe(PO ₃ ) ₃ ) Three categories. Among them, lithium iron phosphate is the most widely used and serves as a key precursor for preparing lithium iron phosphate. Its preparation methods include co-precipitation, solid-phase method, template method, and biotemplate method. Wait. Among them, Template Method Due to its ability to precisely control particle size, morphology, and pore structure, it is widely used in the preparation of high-end power battery materials. The biotemplating method, a green approach that has gained momentum in recent years, leverages microbial structures as templates, demonstrating unique advantages in enhancing material dispersion and electrochemical stability.
II. A Panoramic View of the Industry Chain: From Phosphate Ore to Energy Storage—A Value-Driven Expansion
China's iron phosphate industry chain can be broadly divided into Upstream raw material supply, midstream production and processing, downstream application expansion Three levels.
Upstream: Solid resource base but high costs
The primary upstream raw materials include phosphate rock, phosphoric acid, iron powder, sulfuric acid, hydrogen peroxide, and more. Among these, the cost of the phosphorus source accounts for over 50% of the total production cost, making it the industry’s price benchmark. Given the concentrated geographic distribution of high-quality phosphate resources—in regions such as Guizhou, Yunnan, and Hubei—supply stability and transportation costs have become critical factors influencing the profitability of iron phosphate companies.
Midstream: Manufacturing Processes and Technological Barriers Are Gradually Emerging
Currently, the industry's mainstream processes are primarily the solid-phase method and the template method. The solid-phase method is well-suited for large-scale, continuous production, while the template method focuses more on preparing high-performance materials. In the midstream segment, the competitive focus has shifted from "scale capacity" to "product consistency" and "electrochemical stability." Companies are now leveraging automation, digital control, and advanced solid-liquid separation technologies to achieve higher-quality upgrades.
Downstream: The Dual Driving Force of Batteries and Chemicals
Downstream applications primarily include lithium iron phosphate, catalysts, coating additives, food additives, and nutritional supplements. Among these, the new energy battery sector contributed more than
80% of market demand is the primary engine driving the industry's continuous expansion. As energy storage, electric vessels, and low-speed vehicle markets rapidly rise, the application scope of lithium iron phosphate continues to broaden.
III. Market Dynamics and Policy Drivers: On the New Energy Value Chain "The Invisible Protagonist"
Driven by both policy and market forces, China's iron phosphate industry is entering a phase of rapid growth.
Its continued capacity expansion is primarily driven by the rapid growth of the new-energy vehicle market and the robust surge in energy-storage demand. As electric vehicles gain momentum and become increasingly popular worldwide, lithium iron phosphate batteries have gained prominence due to… High security, long cycle life, and cost advantages , becoming the mainstream choice for power batteries and energy storage systems, has driven a surge in demand for iron phosphate as a key precursor material.
Meanwhile, at the national level, policies are continuously being introduced to support the development of new energy and environmental protection industries, driving the formation of a " Battery – Materials – Equipment – Applications "Integrated industrial landscape."
Thanks to this, China's iron phosphate industry chain has seen a significant improvement in both technological capabilities and supply capacity, enabling it to meet the growing market demand. According to industry forecasts, By 2026, China's iron phosphate industry capacity is expected to reach 13.199 million tons. 。
V. Application of Industrial Filter Cloth in Iron Phosphate Production: The "Invisible Key" to Solid-Liquid Separation
In the preparation process of iron phosphate, Solid-liquid separation It is a critical process that determines the product's purity and particle size distribution. The slurry generated by the reaction must undergo three stages—filtration, washing, and drying—to remove impurity ions and unreacted materials, ensuring the material meets battery-grade purity standards.
At this moment, Industrial filter cloth Its performance directly affects filtration efficiency and the quality of the final product.
1. Process Challenges in the Filtration Stage
Iron phosphate slurry typically has high viscosity, fine particles, and is prone to clogging. Traditional filter cloths tend to develop issues during prolonged operation. Cloth paste, reduced breathability, excessive residue Issues such as these affect production stability and filtration accuracy.
2. The Application Advantages of Xiamen Xiadias CITIUS Industrial Technical Filter Cloth
As a leading domestic manufacturer of filtration materials and systems, Xiamen Xedia Filter Materials Technology Co., Ltd. provides a variety of specialized solutions in the iron phosphate industry.
Its industrial technology filter cloth Widely used in Horizontal vacuum belt filters, belt press filters, vertical filter presses, plate-and-frame filter presses, centrifuges, vertical leaf filters, and other equipment Among them, it has the following notable advantages:
- High Retention Accuracy : Tailored to the characteristics of iron phosphate slurry, Xiamen Xudias CITIUS filter cloth employs a precision weaving process and an optimized pore structure, enabling efficient retention of fine particles while ensuring crystal-clear filtrate.
- Excellent chemical resistance : The filter cloth exhibits excellent resistance to acidic media (such as phosphoric acid and sulfuric acid), significantly extending its service life;
- High Regenerativity and Anti-Clogging Performance :The filter cloth surface has undergone special treatment, giving it excellent release and regeneration properties, thereby reducing the blinding phenomenon.
- Customizable Processing ： Xiadis can customize filter cloth structures and post-processing techniques based on differences in customer equipment, process parameters, and slurry characteristics, ensuring both superior filtration accuracy and efficiency.
In new energy material manufacturing companies, an increasing number of manufacturers are adopting Xiamen Xiadias CITIUS industrial filter cloths for the continuous filtration, washing, and purification processes of iron phosphate and lithium iron phosphate precursors, helping them achieve higher efficiency and quality. High purity, high consistency, high yield The production target.
VI. Conclusion: Collaborative Innovation from Materials to Equipment
The growth of the lithium iron phosphate industry is a microcosm of China's overall leap forward in its new energy industrial chain.
As energy storage, electrification, and intelligent manufacturing continue to deepen, the demand for lithium iron phosphate materials will further expand, and the market is gradually shifting toward High performance, low cost, and eco-friendly Directional development.
In this process, Xiamen Xiedias CITIUS and other technology companies specializing in industrial filtration systems , through continuous innovation in materials, processes, and equipment, it is becoming the "behind-the-scenes driver" supporting the high-quality development of the lithium iron phosphate industry.
From a single filter cloth to an entire production line, from solid-liquid separation to system optimization—industrial filtration technology is quietly shaping the precision and efficiency of new-energy material manufacturing.
The future of iron phosphate belongs not only to batteries, but also to the industrial technological forces that make materials purer and processes more efficient.
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