95% 99% Alumina Ceramic Filter Plates High Performance Alumina Ceramic Vacuum Filter Plate for Casting

Alumina ceramic filter plates are plate-shaped functional ceramics made primarily from high-purity alumina (Al₂O₃) particles. These plates are formed by adding pore-forming agents and binders, then processed through molding (e.g., extrusion or dry pressing) and sintering. They contain numerous interconnected pores.

Alumina ceramic filter plates are powerful and widely used porous functional ceramics. Their core value lies in leveraging the exceptional properties of alumina ceramics to achieve efficient filtration and separation. Their filtration accuracy, air permeability, and strength can be precisely controlled by controlling the raw material particle size, formulation, molding, and sintering processes to meet the needs of diverse applications.

The advantages of alumina ceramic filter plates are the fundamental reason they can operate under extreme conditions:

1. Excellent high-temperature resistance

• Long-term operating temperatures can reach over 1000°C (depending on purity).
• Advantage: They can be used for filtering high-temperature gases, a task unsuitable for plastic or metal filter media.

2. Excellent chemical stability

• They are resistant to corrosion from strong acids, bases, and various organic solvents, and never rust or age. 
• Advantages: Can filter chemically corrosive liquids or gases, with an extremely long service life.

3. High Mechanical Strength: 

• High compressive strength allows it to withstand large pressure differentials and fluid impact without deformation or damage.

4. Excellent Thermal Shock Stability: 

• Can withstand rapid temperature fluctuations without cracking.

5. Customizable Filtration Precision: 

• Pore sizes typically range from a few microns to several hundred microns, allowing it to capture particles of varying sizes as needed.

6. Easy Cleaning and Regeneration:

•  If clogged, it can be fully regenerated through high-pressure air backflushing, ultrasonic cleaning, or high-temperature calcination, restoring filtration performance and significantly reducing long-term operating costs.

Based on their high-temperature, corrosion-resistant, and high-strength properties, alumina ceramic filter plates are primarily used in two key areas:

1. Gas purification and dust removal (high-temperature flue gas ducts)

This is their most classic and widespread application, primarily for capturing dust particles from high-temperature industrial flue gases.

• Steel and metallurgical industries
• Cement industries
• Chemical and energy industries

2. Liquid filtration and separation

They are primarily used for filtering corrosive liquids or liquids requiring high-temperature treatment. 

• Molten metal filtration
• Chemical and pharmaceutical industries
• Water treatment

3. Other Applications

• Distributed combustion: Serves as a combustion medium in gas-fired radiant tubes, achieving high-efficiency, low-NOx combustion.
• Catalyst carrier: Its large surface area makes it an excellent catalyst carrier for automotive exhaust purification and industrial chemical reactors.