NAVI Titanium's sintered cartridge filter for polysilicon is a high-purity, integrally consolidated porous alloy filtration element engineered specifically for polysilicon manufacturing. It delivers superior contamination control, extended service life, and reliable performance under extreme chemical and thermal conditions. The company helps clients reduce downtime, lower long-term consumable costs, and maintain consistent electronic-grade silicon purity. Our filtration elements are trusted by leading photovoltaic and semiconductor manufacturers worldwide.
Solution of NAVI Titanium
Our sintered cartridge filter is manufactured through a proven powder metallurgy technology. These advanced porous structures serve precision separation, electrochemical applications, biomedicine, and elevated-temperature fluid handling. They provide excellent resistance against acid and alkali environments with outstanding compatibility. The interconnected pore network is uniformly distributed and controllable, supporting in-situ regeneration for stable long-term operation under corrosive, thermal, and pressurized conditions. NAVI Titanium specializes in engineered porous structures made from various alloy powders, providing customized solutions for separation efficiency, air permeability, and flow performance across different industrial applications.
The sintered cartridge filter is available in standard straight cylindrical, end-closed plug-in, flange-type, and reduced-diameter configurations. Each design is developed to match specific installation spaces and operating requirements. NAVI Titanium supports customized fabrication based on customer drawings, including non-standard lengths, diameters, thread designs, and flange specifications.
Application
The sintered filtration element plays a critical role across photovoltaic and electronic-grade polysilicon manufacturing lines. It handles aggressive chlorosilane media, elevated-temperature gases, and ultra-fine silicon particles with reliable performance. From pipeline protection to reactor internal separation, NAVI Titanium's porous cartridges help maintain process purity and protect key equipment.
In photovoltaic-grade polysilicon production, the sintered cartridge filter for polysilicon is essential for maintaining product purity and protecting downstream equipment. It is widely applied in trichlorosilane (SiHCl₃) synthesis for liquid precision separation, capturing fine silicon particles and catalyst residues before they enter distillation columns. In reduction furnace tail gas and recovery systems, our porous cartridges remove silicon dust and unreacted chlorosilanes, preventing pipeline blockage and extending equipment service life. During cold hydrogenation operations, the element separates silicon micro-particles from circulating silicon tetrachloride liquid, ensuring continuous and stable operation. Additionally, it provides pre-treatment protection for distillation towers and crude polysilicon purification systems, while supporting ultrapure water circulation during silicon cleaning. These filtration components are designed to withstand corrosive, elevated-temperature environments in photovoltaic polysilicon plants, delivering consistent separation performance that improves final product consistency and production-line reliability. With a large effective surface area, they reduce replacement frequency and minimize operational interruptions.
Electronic-Grade High-Purity Polysilicon (Semiconductor & Chip Silicon Raw Materials)
For electronic-grade high-purity polysilicon used in semiconductor and chip manufacturing, contamination control is extremely critical. The filtration element provides the ultra-clean performance required for these demanding environments. It is installed in ultrapure chlorosilane transfer pipelines for terminal particle removal, ensuring contaminants do not reach CVD reactors. In single-crystal furnace systems, it purifies protective gases by removing trace impurities that may affect crystal growth. For electronic silicon reaction vessels, these components work as internal submerged separation units, directly treating high-purity silicon liquid without introducing foreign particles. They also support reagent circulation purification, preventing microscopic contaminants from affecting silicon purity. Unlike polymer or ceramic alternatives that may release particles or degrade over time, NAVI Titanium's fully metallic porous structure provides zero fiber shedding and avoids organic contamination. This makes it an ideal purification solution for semiconductor-grade polysilicon applications, where sub-micron impurities can impact device performance. Our filtration technology helps manufacturers achieve strict electronic-grade silicon cleanliness requirements.
Purchasing guide
Quality control (QC)
NAVI Titanium's manufacturing factory has obtained ISO 9001 certification. Every sintered cartridge filter undergoes strict quality inspection, including air tightness, permeability, and pore size grading tests. We provide comprehensive COA material certificates and cleanliness reports. Click below to view our quality inspection reports and COA documents.
Manufacturing Process
NAVI Titanium's sintered cartridge filter for polysilicon is manufactured through a precision-controlled metal powder sintering process. High-purity titanium or stainless steel powder is carefully graded and loaded into custom molds. The powder is then vacuum-sintered at high temperatures, causing metallurgical bonding between particles without any adhesives or binders. This creates an integral porous structure with uniform micropores throughout the entire wall thickness. The sintered body undergoes machining, thread cutting, flange welding, and surface treatment. Each filter is cleaned in a dust-free workshop using ultrasonic high-purity cleaning, then dried and packaged in cleanroom conditions. Strict dimensional tolerance control ensures perfect fit and leak-free installation.
Technical Parameters
The following table presents general technical parameters of the sintered filter for polysilicon. These specifications are for reference only and can be customized based on specific working conditions.
| Parameter Item | Standard Specification | Custom Options |
|---|---|---|
| Main Material | Porous Titanium / 316L Stainless Steel Sintered | Hastelloy, Monel, Pure Nickel |
| Filtration Precision | 0.2μm / 0.5μm / 1μm / 2μm | 0.1~50μm adjustable micropore |
| Max Working Temp | Titanium: ≤300℃; SS316L: ≤450℃ | High temp alloy up to 600℃ |
| Corrosion Resistance | Resist chlorosilane, HCl, acidic high-purity silicon liquid | Anti strong halogen corrosion |
| Connection Method | Ferrule, external thread, flange, quick coupling | Non-standard joint drawing customization |
| Porosity | 30%–48%, high permeability, low flow resistance | High/low porosity customized |
| Regeneration Method | High-purity nitrogen backblowing, ultrasonic cleaning, acid pickling | Self-cleaning structure |
| Service Life | 6–18 months | Thickened wall for high silicon powder load |
Why Choose NAVI Titanium
High-Purity Materials & Clean Manufacturing
The sintered cartridge filter is crafted from high-purity titanium powder through vacuum high-temperature sintering. No binders or organic impurities are used, eliminating heavy metal precipitation that could contaminate electronic-grade polysilicon. This ensures silicon material purity meets photovoltaic and semiconductor standards. The all-metal, fiber-free construction prevents particle shedding, unlike PP, PTFE, or ceramic filters that may release fragments into silicon liquid, causing black spots and defective products. Every filter is sintered in a dust-free workshop and undergoes ultrasonic high-purity cleaning before shipment, satisfying semiconductor clean production requirements. NAVI Titanium's commitment to material purity and manufacturing cleanliness directly translates to higher yield rates and fewer rejects for polysilicon manufacturers. Our filters protect your product integrity from the inside out, delivering reliable contamination control that meets the most stringent electronic-grade specifications. With NAVI Titanium, you invest in filtration technology that safeguards both your product quality and your reputation.
Superior Corrosion Resistance & Long Service Life
The sintered cartridge filter for polysilicon features a porous titanium substrate that strongly resists trichlorosilane, hydrogen chloride, and chlorosilane high-temperature corrosion. It does not powder or perforate during long-term exposure to acidic halides. The filter withstands alternating hot and cold conditions without micro-pore deformation or silicon powder leakage. NAVI Titanium's advanced sintering technology creates metallurgical bonds between particles, forming a robust structure that maintains integrity under thermal cycling. This durability translates to extended service life of 6 to 18 months, far exceeding disposable polymer filters. For polysilicon producers, this means fewer replacement cycles, reduced maintenance labor, and lower overall operating costs. The filter's resistance to aggressive chemicals ensures consistent filtration performance throughout its lifespan, protecting downstream equipment and maintaining product purity. The sintered metal cartridges are the reliable choice for polysilicon plants operating under the most demanding chemical and thermal conditions, delivering performance that disposable alternatives simply cannot match.
High Flux, Large Dust Capacity & Regenerability
NAVI Titanium's sintered filter offers a large filtration area in a compact cylindrical design, ensuring low flow resistance that does not impede production line circulation or cause pipeline pressure buildup. The porous structure holds a substantial volume of silicon powder, significantly reducing frequent shutdowns for filter replacement and improving overall production line utilization. The filter supports high-purity nitrogen online backblowing, acid pickling, and ultrasonic cleaning. After cleaning, filtration performance returns to original levels, allowing repeated use dozens of times. This regenerability reduces long-term consumable costs by over 60% compared to disposable plastic filters. For large polysilicon factories requiring bulk filter usage, the sintered cartridges deliver exceptional economic value. Standard straight, flanged, and closed-head configurations are kept in stock for 48-hour sample delivery. Custom sizes, special flanges, and threaded connections can be manufactured to match imported reduction furnaces and cold hydrogenation equipment drawings, perfectly replacing overseas original filters.
FAQ
How do I maintain and clean the sintered cartridge filter?
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NAVI Titanium recommends high-purity nitrogen backblowing, ultrasonic cleaning, or acid pickling. These methods effectively remove silicon powder and contaminants without damaging the pore structure. Regular maintenance restores filtration performance to original levels.
What is the service life of this filter?
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Service life ranges from 6 to 18 months depending on operating conditions, silicon powder concentration, and maintenance frequency. Thickened-wall custom options extend service cycle for high silicon powder load applications.
How do I know when to replace the filter?
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Replace when pressure differential across the filter exceeds recommended limits, or when cleaning no longer restores flow rate. NAVI Titanium provides pressure monitoring guidelines and technical support for replacement timing.
Can NAVI Titanium filters replace imported original cartridges?
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Yes. We manufacture custom filters based on imported equipment drawings, including length, outer diameter, flange, and thread specifications. Our filters perfectly match original dimensions for drop-in replacement.
What quality certifications and reports are provided?
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Each filter undergoes air tightness, permeability, and pore size grading tests. We provide COA material certificates, cleanliness reports, and ISO 9001 certification documentation. Free samples are available for on-machine testing.
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