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From Silver to Si-C: A New Nano-Micro Filtration System for Advanced Materials
Release time:
2025-11-12
In the wave of the new materials industry, the "purity" and "particle size distribution" of powders virtually determine the success or failure of a product. From conductive silver pastes and carbon nanotubes to silicon-carbon anode materials for lithium-ion batteries, as well as high-purity alumina, silicon carbide, silicon nitride, and other critical functional powders, cleanliness and dispersibility at the particle level have become the core metrics driving industrial competition. Meanwhile, in this crucial stage, the importance of filtration and classification processes is being redefined.
Over the past decade, China's powder manufacturing companies have largely relied on conventional filtration equipment such as plate-and-frame, bag-type, and centrifugal systems. While these technologies are well-established, they often struggle with low efficiency, thick filter cakes, challenging regeneration processes, and significant fluctuations in filtration accuracy when handling sub-micron or even nanoscale particles. As industries like new energy, electronic pastes, semiconductor packaging, and ultra-hard materials continue to rise, the limitations of traditional filters have become increasingly apparent.
It is precisely at this industry juncture that, Xiamen Xedia Filter Materials Technology Co., Ltd. The newly launched nano-micropowder filtration machine is emerging as a crucial bridge connecting "high-purity raw materials" with "high-performance materials."
I. From Tradition to Innovation: The "Tipping Point" of Powder Filtration
The working logic of traditional filters is primarily based on macroscopic pores and mechanical interception, with filter cloth pore sizes typically ranging from 10 to 50 microns. For fine powders, colloids, and nanoscale aggregates—particles smaller than 1 micron—two extreme phenomena often occur: "leakage" or "blinding," leading to the following outcomes:
• The filtration process takes too long, making it difficult to match the production rhythm with the high-end material line;
• The filter cake has a high moisture content, causing drying energy consumption to surge;
• Fine powder has a high loss rate, reducing yield.
New-type Nanometer-Micrometer Powder Filtration Machine Building on this foundation, a systematic reconstruction has been carried out to achieve controllable filtration of nanometer- and micrometer-sized particles. The resulting filter cake exhibits a uniform structure with excellent peelability, enabling continuous and highly efficient separation of nanoscale powders even at stable filtration rates. While traditional filters typically remain limited to the physical process of "solid-liquid separation," Xadias' innovative equipment truly transforms filtration into the "starting point" for material purification and performance optimization.
II. A Major Breakthrough in Solid-Liquid Separation Equipment—The New Nano- and Micro-Powder Filtration Machine
After years of research and development, Xiamen Xiadias has launched a new nanomicro-powder filtration machine that represents the cutting edge of the industry, marking a significant technological breakthrough in the field of solid-liquid separation equipment. Built around the core principles of "high precision, intelligent operation, and green manufacturing," this equipment boasts the following notable advantages:
1. Direct separation of micro- and nanoscale particles with a retention rate as high as 99.9%
2. Pure physical filtration method, requiring no addition of chemicals or additives
3. Separation, washing, and drying in one integrated process—resulting in clear liquid, low moisture content in the filter cake, and easy cake detachment.
4. Low energy consumption, high automation, and low operating costs
It not only stably handles powder particles as small as 25 nanometers—while most filtration equipment on the market can only manage particles in the 300–500 nanometer range—but also delivers a significant boost in conductivity for the metal powder industry. Thanks to precise separation and efficient low-residue washing, the powder surfaces become purer with reduced oxidation residues, and the resulting liquid achieves "zero suspension," while wash and drying losses are virtually eliminated.
Wide-ranging applications include:
• Micro- and nanoscale powder materials: Nanometer-sized copper powder, nickel powder, silver powder, zinc powder, aluminum powder, iron powder, zirconium powder, titanium powder, as well as nickel oxide, zinc oxide, aluminum oxide, iron oxide, titanium oxide, calcium carbonate, silicon oxide, silicon carbide, and more;
• Industrial powder raw materials: Non-metallic mineral powders such as talc, heavy calcium carbonate, quartz, wollastonite, kaolin, mica, and graphite, as well as industrially synthesized powders including silicon carbide, corundum, silicon nitride, precipitated silica (white carbon black), titanium dioxide, and diamond.
This equipment can be widely used for purifying industrial powder materials, precisely classifying high-precision micro- and nanoscale powders, and treating wastewater containing micron- and nanoscale pigments—making it the ideal tool for today's advanced materials industry chain.
III. From Silver Powder to Silicon-Carbon: Multi-Scenario Applications in the New Materials Chain
1. Conductive Silver Powder and Electronic Paste Field
Silver powder is the foundation for high-end electronic pastes and chip packaging materials, and its particle size distribution and purity directly influence sintering density and electrical conductivity. Traditional filtration processes often lead to the retention of agglomerated particles or the loss of fine powders, resulting in a 5–8% increase in sintering resistance. However, the Nanowe Micro-powder Filtration System enables highly efficient separation down to particle sizes as low as 25 nanometers, effectively minimizing the loss of ultrafine particles while enhancing both the yield and uniformity of the finished silver powder.
2. Silicon-Carbon Anodes and New Lithium-Electric Materials
Silicon-carbon anode materials typically involve high-viscosity, high-specific-surface-area slurry dispersion systems during the preparation process. Xadias equipment filtration technology prevents structural damage caused by conventional filtering methods, while simultaneously enabling highly pure solvent recovery. This reduces solvent residue by approximately 40%, significantly minimizing side reactions and enhancing both the material's cycle life and safety.
3. Ultrafine Alumina and Silicon Carbide Powders
In the manufacturing of ceramics, LED substrates, and semiconductor wafers, alumina and silicon carbide must meet purity requirements as high as 99.99% or more. The new nanomicro-powder filtration technology ensures that the entire filtration process remains free from secondary contamination, while also improving filter cake uniformity by over 30%. This technology is ideally suited for the final grading and cleaning of precision powders.
IV. Industrial Significance: The "Invisible Lever" of Filtration Technology
Filtering may seem like an intermediate step in the manufacturing process, but it plays an invisible yet critical role as a quality lever within the new materials industry chain.
In products such as silver powder, silicon-carbon composites, and silicon nitride, even a particle size deviation of just 0.1 μm can lead to reduced electrical conductivity or diminished cycling performance. Yet Xadias' innovative nanometer-to-micron-scale powder filtration technology precisely leverages this "micrometer-level precision" to gain a competitive edge.
This means:
• To upstream: Help powder manufacturing companies enhance line purity and yield, while reducing waste and rework.
• For the midstream: It can serve as a core step in slurry refining and solvent recovery, helping electronic materials and lithium-battery companies enhance efficiency while reducing energy consumption.
• To the downstream: Enhance the stability and consistency of end products, and strengthen the international market competitiveness of domestically produced new materials.
V. Conclusion: "Made in China" in the Nanometer Era
From technical fabrics to intelligent filtration systems, Xadias has forged a path of "micro-innovation" over three decades of accumulated expertise.
In today’s global materials industry, which is steadily advancing toward greater precision and intelligence, the filtration stage is transforming from a "supporting role" into a critical technological hub for the entire sector. Xadias’ new nanometer-scale micronized powder filter machine perfectly symbolizes this shift—it embodies China’s manufacturing journey from "capable of doing" to "masterful in execution," and marks a transition from conventional equipment production to the realm of cutting-edge, high-end process innovation.
In the future, from silver powder to silicon-carbon materials, and from nanomaterials to advanced functional materials, Xadias' innovative filtration technology is emerging as a significant technological force within the new materials industry chain, providing robust support for China's "Made in China" initiative toward high-purity, high-precision, and highly efficient manufacturing.
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