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. This is especially true for precious-metal nanoscale powders such as silver powder, whose purity, particle size distribution, and moisture content directly affect downstream applications—including conductive pastes, electronic components, and fine chemicals. Traditional solid-liquid separation methods face numerous challenges when processing nano- and micro-sized silver powders, such as high moisture content in filter cakes, turbid filtrate, incomplete cleaning, and complex operational procedures. To address these difficulties, Xiamen Xiadis has launched... New nanomicro-powder filtration machine An industrial breakthrough has been achieved in the integrated processing of filtration, washing, and drying of nano- and micro-sized silver powders.

I. Overview of the New Nano- and Micro-Powder Filtration Machine

The new nanometer-sized 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 micro- and nano-sized particles. Its key features include:

1. High-precision separation Direct separation of micron- and nanoscale particles with a retention rate as high as 99. The concentration of effective particulate matter in the filtrate can reach PPM levels. Ensure the filtrate is clear and transparent, greatly enhancing product purity.
2. Pure physical filtration No chemical agents or additives are required, reducing secondary pollution and the difficulty of subsequent cleaning.
3. Integrated design The equipment integrates solid-liquid separation, washing, and drying into one unit, with the filter cake moisture content as low as: 5%~8% Moreover, the filter cake is easy to peel off, making it suitable for continuous production of high-precision powders.
4. Low energy consumption, high automation The equipment operates stably, features a high degree of automation, is easy to maintain, and significantly reduces production costs.

This innovative device is suitable not only for industrial powdered raw materials but also for various micro- and nano-powder materials as well as wastewater treatment containing particles at the micro- and nano-scale, providing an ideal solution for modern fine chemical engineering and new material production.

II. Challenges in Solid-Liquid Separation of Nanometer- and Micrometer-Sized Silver Powders

During the preparation process, nanometer-sized silver powders typically exist in the form of slurries. These powders are characterized by extremely fine particle size, large specific surface area, and a tendency to agglomerate. Consequently, conventional filter cloths, plate-and-frame filters, or belt presses struggle to meet the requirements of high retention efficiency and low moisture content. The main challenges include:

1. 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 the production of silver powder, which requires high purity and low moisture content.
2. The filtrate is cloudy. Micro- and nano-particles tend to be washed out with the filtrate, causing the filtrate to become cloudy and increasing the difficulty of subsequent treatment.
3. Insufficient cleaning Impurities adsorbed on the surface of nanoparticles are difficult to remove completely by conventional washing methods, thereby affecting the purity of silver powder.
4. Complex operation Continuous production requires highly precise control of flow, pressure, and temperature, and traditional equipment finds it difficult to achieve integrated operation.

III. Integrated Solution for Washing and Drying of Nanometer- and Micrometer-Sized Silver Powders

In response to the above-mentioned issues, the new nano- and micro-powder filtration machine has completed the entire process—from solid-liquid separation to filter cake drying.

1. Solid-liquid separation The equipment can directly retain nano-silver powder, achieving clarification of the filtrate. By employing a uniformly distributed pressure filtration method, it prevents particle blockage and enhances production efficiency.
2. Washing treatment Using a controlled-flow cleaning fluid circulation, thoroughly flush away impurities from the filter cake surface while ensuring that particles do not agglomerate.
3. Drying and dehydration Through hot-air or vacuum drying, the moisture content of the filter cake can be reduced to as low as: 5%~8% , reducing by approximately compared to traditional methods 50% Above. Filter cakes with low moisture content are easy to peel off and have good flowability, facilitating packaging or subsequent processing in the next production stage.

This integrated solution not only enhances the purity and recovery rate of silver powder but also significantly improves production efficiency, reduces energy consumption and manual labor, and achieves green and intelligent manufacturing.

IV. Scope of Application and Industrial Applications

The new nanometer- and micrometer-sized powder filtration machine is not only suitable for nanometer- and micrometer-sized silver powders, but is also widely used for 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 raw materials including silicon carbide, corundum, silicon nitride, precipitated silica, titanium dioxide, and diamond.
• Micro- and nanoscale powder materials Nano-sized nickel powder, silver powder, zinc powder, aluminum powder, iron powder, zirconium powder, and titanium powder, as well as nickel oxide, zinc oxide, aluminum oxide, iron oxide, titanium oxide, calcium carbonate, silicon oxide, silicon carbide, and others.
• High-precision wastewater treatment Wastewater containing micro- and nano-sized particles can be directly processed by this equipment, achieving the integrated goals of solid-liquid separation, resource recovery, and environmentally friendly discharge.

This type of equipment holds broad application prospects in the fields of electronic materials, fine chemicals, energy materials, ceramic materials, and new functional powders.

V. Advantages of Low Moisture Content in Nanofiltration Cake

The low moisture content of the filter cake is a major highlight of the Nanwei fine powder filtration machine and holds significant importance for industrial production.

1. Improve product purity Low moisture content means reducing residual moisture, preventing chemical reactions or impurity adsorption, and enhancing the purity of nano-silver powder.
2. Reduce drying costs Traditional filter cakes require additional drying, which consumes a lot of energy. Filter cakes with lower moisture content, however, reduce drying time and energy consumption.
3. Improve operational efficiency The filter cake is easy to peel off and has good flowability, making it convenient for continuous production and packaging operations.
4. Ensure downstream process quality. For example, in the preparation of conductive pastes or electronic components, low-moisture silver powder can enhance electrical conductivity and material stability.

Overall, the filter cake has a moisture content as low as 5%~8% It represents a qualitative leap in the processing of industrial nano- and micro-sized silver powders, and also serves as an important indicator of the widespread recognition of the new nano- and micro-powder filtration machines in the market.

VI. Conclusion and Contact Information

As the new materials industry increasingly demands higher purity, particle size, and moisture content for micro- and nanoscale powders, traditional solid-liquid separation equipment can no longer fully meet production needs. The Xiamen Xiadis New Nano- and Micro-Powder Filtration Machine achieves this by... High-precision physical filtration, integrated washing and drying, low-energy consumption automation Its design makes it an ideal piece of equipment for the industrial-scale processing of nanometer- and micrometer-sized silver powders and other high-precision powders.

For sample testing, please contact us:

• Phone / WeChat /WhatsApp： +86-13950107241
• Email ： wyl@citius-filter.com

From nano- and micro-sized silver powders to industrial nanomaterials, the application of this equipment not only enhances production efficiency and material purity but also drives the development of powder-processing equipment toward greater intelligence and environmental friendliness. For research institutions, fine chemical companies, electronic materials manufacturers, and new-material enterprises, this equipment undoubtedly represents a crucial tool for boosting production competitiveness.