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Porous Ceramic

For more than 40 years C.L. Smith Industrial Company has provided abrasion resistant solutions and teaming up with Filtros Limited, who has been at it for over 90 years, is a natural fit. Filtros Limited porous ceramic materials are ideal for specialty filtration applications encountered in today’s industrial environments. With exceptional physical, thermal and chemical properties Porous Ceramic can be used to filter any material that does not attack glass. With a variety of grades, pour sizes and abilities to custom compound and shape the media, Filtros Porous Ceramic can be used in many high performance liquid or gas filtration systems.

Porous Ceramic Parts
  • Fluidized Beds / Air Slides for
    • Drying and Heat Processing
    • Blending and Separation
    • Investment Casting
    • Plastic Coating
  • Underdrain plates for water treatment plants
  • Potable water and tertiary sewage filtration
  • High pressure/high temperature liquid and gas filtration
  • Suction line filters
  • Membrane supports
  • Mining dewatering
  • Liquid and gas chemical
  • Hot gas articulate
  • Food and beverage
Porous Ceramic Material Close-up

QF – Glass Bonded Silica
FAO – Ceramically Bonded Alumina
QR – Resin Bonded Silica

All materials are available in a variety of grades depending on your application. Resin bonded silica (QR) performs well in room temperature conditions with QR-130 fluidizing most materials. For higher temperature or special applications glass bonded silica (QF) or ceramically bonded alumina (FAO) are available in coarseness size to support the materials fluidization characteristics and volume of  air available.

C.L. Smith Industrial’s performance blue Filtros Porous Ceramic plates are excellent for fluidized beds and an excellent alternative to cloth/fabric air slide material. Air is blown under the ceramic plate, diffusing it and the material above has minimal friction between particles which causes it to act like a liquid.

Porous Ceramic Examples
  • Abrasion resistance and mechanical strength
  • Uniform air permeability throughout the plate surface
  • Smooth conveying surface
  • Resistant to temperatures as high as 2500 °F
  • Chemically resistant to most alkali, organic and acid solutions
  • High flexural strength and very high compressive strength
  • Available in various pore sizes, configurations and custom blends
  • Molded or machined to meet exacting requirements
  • Available in a variety of sizes and configurations
  • Existing housings can be retrofit to accept ceramic plates 

Material Grade

Material Grade FAO-10 FAO-20 FAO-30 FAO-40 FAO-50
Nominal Particle Retention (μ) 10 20 30 40 50
Approximate Particle Retention (μ)μ) 1 2 3 4 5
Maximum Pore Diameter (μ) 60 80 100 120 140
Porosity 30-40% 30-40% 30-40% 30-40% 30-40%
Bulk Density (g/cc) 2.1-2.3 2.1-2.3 2.1-2.3 2.1-2.3 2.1-2.3
Flexural Strength (MOR) (psi) 6,000 5,500 5,000 4,500 4,000
Permeability @ 2" Water (cfm) 2-3 3-5 5-8 8-12 12-15
Material Grade FAO-70 FAO-100 FAO-160 FAO-700 FAO-1200
Nominal Particle Retention (μ) 70 100 160 700 1,200
Approximate Particle Retention (μ)μ) 7 10 20 100 200
Maximum Pore Diameter (μ) 170 210 300 800 1,300
Porosity 30-40% 30-40% 30-40% 30-40% 30-40%
Bulk Density (g/cc) 2.1-2.3 2.1-2.3 2.1-2.3 2.1-2.3 2.1-2.3
Flexural Strength (MOR) (psi) 3,500 3,000 2,500 1,500 1,000
Permeability @ 2" Water (cfm) 20-25 35-45 70-80 120-140 170-190
  FAO-10 FAO-30 FAO-50 FAO-70 FAO-100 FAO-160 FAO-700 FAO-1200
Inches Water (Pressure) 3.00 3.00 3.00 3.00 3.00 2.75 1.50 0.50
CFM Air 3.00 10.00 25.00 40.00 55.00 97.50 97.65 100.00
  FAO-1200 FAO-700 FAO-160 FAO-100 FAO-70 FAO-50 FAO-30 FAO-10
Inches Water (Pressure) 0.50 1.50 2.75 3.00 3.00 3.00 3.00 3.00
CFM Air 100.00 97.65 97.50 55.00 40.00 25.00 10.00 3.00

With the ability to convey large tonnages over long distances, reduced energy requirements versus other mechanical systems, minimal dust collection requirements and low maintenance costs the performance blue Filtros Porous Ceramic system is an excellent choice!

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