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Nanometer-Scale Silver Powder Filtration and the New Nanomicro Filtration System
Release time:
2025-11-17
In the wave of new materials and high-precision powder production, the handling of micro- and nanoscale powders has always been a critical step determining product quality. Particularly for precious metal nanoparticles like silver powder, their purity, particle size distribution, and moisture content directly influence downstream applications—including conductive pastes, electronic components, and fine chemical industries. Traditional solid-liquid separation methods, however, face numerous challenges when processing nano- and micron-sized silver powders, such as high moisture content in filter cakes, turbid filtrate, incomplete washing, and complex operational procedures. To address these difficulties, Xiamen Xiadis has introduced New-Type Nanometer-Micrometer Powder Filtration Machine , a breakthrough has been achieved in the industrial-scale integration of filtration, washing, and drying processes for nanometer- and micrometer-sized silver powders.
I. Overview of the New Nano- and Micro-Powder Filtration Machine
The new nanomicro-powder filtration machine represents a significant technological upgrade in the field of solid-liquid separation equipment. This device employs advanced physical filtration technology, enabling highly efficient retention of particles at the micro- and nanoscale. Its key features include:
- High-precision separation : Direct separation of micro- and nanoscale particles, with a retention rate as high as 99.99% , ensuring the filtrate is clear and transparent, significantly enhancing product purity.
- Pure physical filtration : No chemical agents or additives are required, reducing secondary pollution and the difficulty of subsequent cleaning.
- Integrated Design : The equipment integrates solid-liquid separation, washing, and drying into one compact unit, achieving a filter cake moisture content as low as 5% to 8% , and the filter cake is easy to peel off, making it suitable for continuous production of high-precision powders.
- Low energy consumption, high automation :The equipment operates reliably, features a high degree of automation, requires simple maintenance, and significantly reduces production costs.
This innovative equipment is not only suitable for industrial powder materials, but also applicable to various micro- and nanoscale powder materials, as well as wastewater treatment containing particles at the micro- and nanoscale—providing an ideal solution for modern fine chemical industries and new material production.
II. Challenges in Solid-Liquid Separation of Nanometer- and Micrometer-Sized Silver Particles
Nanometer- and micrometer-sized silver powders typically exist in slurry form during the preparation process, characterized by extremely fine particles, high specific surface area, and a tendency to agglomerate. As a result, conventional filter cloths, plate-and-frame filters, or belt-type filter presses often fail to meet the stringent demands for high retention rates and low moisture content. The main challenges include:
- The filter cake has a high moisture content. Traditional filtration equipment struggles to achieve complete dewatering, and the moisture content of the filter cake often remains at 15%-25% This is clearly not ideal for producing silver powder that requires high purity and low moisture content.
- The filtrate is cloudy. : Micro- and nanoscale particles easily wash out with the filtrate, causing turbidity and increasing the difficulty of subsequent processing.
- Insufficient cleaning Nanoparticles adsorb impurities on their surfaces, which are difficult to remove completely through conventional washing, thereby affecting the purity of silver powder.
- Complex operation Continuous production demands highly precise control of flow, pressure, and temperature—tasks that traditional equipment struggles to accomplish in an integrated manner.
III. Integrated Washing and Drying Solution for Nanometer- to Micrometer-Sized Silver Powders
Addressing the above issue, the new nanomicro-powder filtration machine has successfully completed the entire process—from solid-liquid separation to filter cake drying.
- Solid-liquid separation : The equipment can directly intercept nano-silver powder, achieving clear filtrate. Thanks to the uniformly distributed pressure filtration method, particle blockage is prevented, thereby enhancing production efficiency.
- Washing treatment : Utilizing a controlled-flow cleaning fluid circulation, thoroughly flush away impurities from the filter cake surface while ensuring that particles remain dispersed and do not agglomerate.
- Dry dehydration : Through hot-air or vacuum drying methods, the filter cake's moisture content can be reduced to as low as 5% to 8% , compared to traditional methods, it is reduced by approximately 50% That’s all. The filter cake with low moisture content is easy to peel off and flows smoothly, making it convenient for packaging in the next process or for subsequent processing.
This integrated solution not only enhances the purity and recovery rate of silver powder but also significantly boosts production efficiency, reduces energy consumption and manual operations, and ultimately achieves greener, smarter manufacturing.
IV. Scope of Application and Industrial Applications
The new nanomicro-powder filtration machine is not only suitable for nanomicro silver powder, but also widely used in the solid-liquid separation and processing of other micro- and nanoscale powders, including:
- 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 powder materials like silicon carbide, corundum, silicon nitride, precipitated silica, titanium dioxide, and diamond.
- Micro- and nanoscale powder materials : Nano-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.
- High-precision wastewater treatment Wastewater containing micro- and nanoscale particles can be directly processed by this equipment, achieving a seamless integration of solid-liquid separation, resource recovery, and environmentally friendly discharge.
This type of equipment holds broad application prospects in fields such as electronic materials, fine chemicals, energy materials, ceramic materials, and advanced functional powder technologies.
V. Advantages of Low Moisture Content in Nanofiltration Machine Filter Cake
Low moisture content in the filter cake is a major highlight of the Nanwei fine powder filtration machine, holding significant importance for industrial production:
- Improve product purity : Low moisture content means reducing residual water, preventing chemical reactions or impurity adsorption, and enhancing the purity of nano-silver powder.
- Reduce drying costs Traditional filter cakes require additional drying, which consumes significant energy. In contrast, low-moisture filter cakes reduce both drying time and energy consumption.
- Improve operational efficiency :The filter cake is easy to peel off and flows well, making it convenient for continuous production and packaging operations.
- Ensure downstream process quality For instance, in the preparation of conductive pastes or electronic components, low-moisture silver powder can enhance both conductivity and material stability.
Overall, the filter cake has a moisture content as low as 5% to 8% This represents a qualitative leap in the industrial processing of nanometer-scale silver powder, and also serves as a key indicator of the growing market recognition for the company's new nanometer-scale powder filtration systems.
VI. Conclusion
As the new materials industry increasingly demands higher purity, tighter particle size control, and lower moisture content in micro- and nanoscale powders, traditional solid-liquid separation equipment can no longer fully meet production needs. Xiamen CITIUS innovative nano- and micron-scale powder filtration machine achieves this by High-precision physical filtration, integrated washing and drying, and low-energy consumption automation Its design makes it the ideal equipment for industrial-scale processing of nanometer- and micrometer-sized silver powders as well as other high-precision powders.
From nanoscale silver powders to industrial-grade nanopowders, the application of this equipment has not only enhanced production efficiency and material purity but also propelled the development of powder-processing machinery toward smarter, more sustainable solutions. For research labs, fine chemical industries, electronic materials companies, and new-material enterprises, this equipment is undoubtedly a vital tool for boosting competitive edge in production.
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