Comprehensive Introduction to Titanium Rod Filter Elements
Product Overview
Titanium rod filter elements are tubular or plate-shaped filtration components formed through metal powder screening and grading, cold isostatic pressing, followed by high-temperature, high-vacuum sintering. Their internal structure is uniform, featuring numerous micron-level open pores that form an interlaced network of channels.
This cartridge employs depth filtration, forming not only a surface filtration layer but also enabling particles to adhere to pore walls and create “bridging phenomena.” This allows interception of particles smaller than the nominal pore size, achieving high-precision filtration. It exhibits zero particle shedding, preventing secondary contamination of the filtrate and meeting stringent food hygiene and pharmaceutical GMP standards.
Product Parameters
Parameter Category Parameter Details Reference Source
Filtration Precision 0.22μm ~ 100μm
Pore Volume 28% ~ 50%
Compressive Strength 0.5 ~ 1.5 MPa
Temperature Resistance ≤300℃ (wet state)
Operating Differential Pressure ≤0.6 MPa
Diameter (mm) Φ30, Φ40, Φ50, Φ60, Φ70, Φ80, Φ90, Φ100, Φ130, Φ150, Φ200
Length (inches/mm) 5“ (125mm), 10” (250mm), 12“ (300mm), 20” (500mm), 30“ (750mm), 40” (1000mm)
Connection Type: Flanged, Socket Weld (Types 222, 226, 227), Threaded (e.g., M20, M30, 4-inch, 6-inch)
Seal Material: Silicone Rubber, Nitrile Rubber, EPDM Rubber, Fluorocarbon Rubber
product Display
Production Process
The manufacturing of titanium rod filter elements is a precision process, primarily comprising the following core steps:
1. Powder Selection: Select high-purity titanium powder (typically over 97% purity) of varying grades and particle sizes. The powder's particle size distribution directly impacts the final product's filtration precision and performance.
2. Forming: Titanium powder is loaded into molds and subjected to cold isostatic pressing (CIP) technology. This ensures uniform pressure distribution, forming green compacts with defined strength and shape. Mold concentricity is critical to prevent uneven filter element wall thickness.
3. Sintering: This is the most critical process. The formed green compact is placed in a high-temperature, high-vacuum sintering furnace and sintered under strictly controlled temperature and vacuum conditions. This process causes diffusion and fusion between titanium powder particles, forming a microporous filter element with a predetermined pore structure and mechanical strength. Different precision levels correspond to different sintering processes.
4. Machining & Welding: Post-sintering mechanical processing is performed on the filter elements, followed by welding of corresponding interfaces (e.g., M20 threads, 222 socket joints). Advanced techniques enable seamless tubular filter elements up to 1000 millimeters in length.
Rigorous control throughout every stage of production is essential to ensure the consistent performance and reliability of titanium rod filter elements.
Product Advantages
Compared to traditional filter media (e.g., filter paper, carbon rods, polymer membranes), titanium rod filter elements offer the following significant advantages:
●Exceptional Chemical Stability: Resistant to strong acid and alkali corrosion (operable within pH 2-12 range), with strong oxidation resistance, suitable for extremely harsh chemical environments.
●Superior thermal resistance: Capable of long-term stable operation at high temperatures (wet state ≤300°C), suitable for steam filtration and high-temperature processes.
●High mechanical strength: Durable and robust, withstands high operating pressure differentials (typically 0.6MPa), suitable for pressure filtration and vacuum filtration with minimal damage risk.
●Extended service life and regenerability: High mechanical strength with minimal aging. Effectively regenerated through backflushing, backwashing, or chemical immersion (e.g., dilute acids/alkalis) to restore most filtration properties. Typical service life exceeds 3 years—several times longer than many polymer filter cartridges.
●No Particle Shedding & Excellent Biocompatibility: No particulate shedding contaminates filtrate. Non-toxic with excellent compatibility with human tissues and blood, meeting pharmaceutical and biotechnology requirements for sterility and contamination-free processing.
●High-Efficiency Filtration: Uniform, narrow pore size distribution and high porosity result in low filtration resistance, high flow rates, and superior separation efficiency.
Application Fields
Leveraging its unique advantages, the titanium rod filter cartridge finds extensive applications:
●Pharmaceutical Industry: Concentrated decarbonation filtration for large-volume parenteral solutions, small-volume injections, and oral liquids; security filtration prior to final dilution; impurity removal and precision filtration in API production; sterile air preparation.
●Food and Beverage Industry: Clarification and sterilization filtration for beer, beverages, spirits, mineral water, vegetable oils, soy sauce, and vinegar.
●Water Treatment Industry: Security filtration for ultrafiltration (UF), reverse osmosis (RO), and electrodialysis (EDI) systems; post-ozonation filtration and ozone aeration; seawater desalination pretreatment.
●Chemical and Petrochemical Industries: Filtration and recovery of various organic solvents, chemical reagents, acidic/alkaline liquids, and catalysts; filtration of petrochemical products; high-temperature gas purification.
●Electronics Industry: Final filtration of high-purity water for microelectronics and semiconductor manufacturing.
●Environmental Protection: Industrial wastewater treatment, oil-water separation, heavy metal removal, flue gas dust removal, etc.
●Other Fields: Gas purification (e.g., compressed air, steam); metallurgical industry; fuel cell applications; and laboratory research.
As a highly efficient, durable, and versatile filtration element, titanium rod filter cartridges require comprehensive consideration of specific fluid properties (pH, temperature, corrosivity), required filtration precision, flow rate demands, and system operating pressure during selection. Proper usage and maintenance maximize their performance advantages.