0.1 µm – 50 µm Porous Alumina Rods for Filtration, Diffusion, and High-Temperature Applications

Porous Alumina Ceramic Rod Applications

• Chemical Processing

  ✅Key Advantages

  1. Uniform Gas Distribution (≤±7% maldistribution) — Engineered pore network delivers even diffusion across the reactor; bench tests show 5–7% flow non-uniformity at 20–80 L/min vs ≥20% with perforated metal.

  2. Corrosion-Tolerant Diffuser (<0.1% mass loss) — After 168 h immersion in 10% H₂SO₄/10% NaOH at 80 °C, mass change <0.1% and >95% porosity retention, maintaining stable flow.

  3. Extended Service Life (2–3× vs sintered metal) — Flow rate drift stays within ±10% over 6–12 months of service, cutting replacement frequency and shutdowns.

  ✅ Problem Solved

  A chlorination off-gas reactor showed ±18% temperature spread and weekly cleaning due to corroded stainless diffusers. After switching to a porous alumina diffusion rod (5 µm pore, Ø20 × 300 mm), gas distribution deviation fell to 6% and ΔP stabilized <18 kPa at 40 L/min.Material loss was not measurable after 500 h exposure to 10% HCl vapour; porosity and flow stayed within spec. Maintenance interval extended from 4 weeks to 12 weeks, saving ~32 h downtime per quarter and reducing spare-part spend by ~30%.

• Laboratory Research

  ✅Key Advantages

  1. Precision Dimensional Stability — OD/ID tolerance ±0.2 mm and length ±0.5 mm across batches ensure leak-free seals and repeatable jig alignment in lab fixtures.

  2. Consistent Filtration Throughput — Pore sizes 0.2–10 µm with D10–D90 span ≤2.0 deliver flow-rate CV ≤5% across 10 samples at 100 kPa (DI water, 20–25 °C).

  3. Low Extractables & Sterilization-Safe — Ionic leachables <10 ppb (Na/K) after 24 h DI soak; autoclave 121 °C × 50 cycles with permeability drift <5%.

  ✅ Problem Solved

  An analytical lab preparing LC–MS samples saw variable filtrate volumes and protein loss using disposable polymer filters.After switching to a 5 µm porous alumina rod (Ø10 × 150 mm), between-run RSD on filtrate volume fell from 11.8% to 3.4% at 100 kPa.
  Recovery of a 10 kDa protein standard improved from 87% to 96%, indicating lower adsorption and more reliable quantitation.Filtration time shortened from 6.5 min to 4.1 min per sample, and the rods endured 40+ autoclave cycles without dimensional drift, cutting consumable cost by ~58%.

• Industrial Heating Equipment

  ✅Key Advantages

  1. Low-k Insulation for Hot Zones — Effective thermal conductivity 1.5–3.0 W/m·K at 25 °C (≤4 W/m·K at 800 °C) limits heat loss and shields adjacent components in furnaces.

  2. Uniform Airflow Diffusion — Interconnected pores equalize flow with ≤8% maldistribution at 50–200 L/min while maintaining ΔP < 15 kPa across the diffuser section.

  3. Cycling Stability of Permeability — Permeability drift remains < 5% after 200 thermal cycles between 200–900 °C, keeping airflow and temperature profiles consistent over time.

  ✅ Problem Solved

  A 1050 °C continuous belt furnace showed ±25 °C hot–cold variation and 14–20% gas maldistribution using perforated metal baffles. Switching to porous alumina diffuser rods (Ø25 × 400 mm, 10 µm pore) in the plenum reduced temperature spread to ±8 °C and stabilized ΔP at 12 kPa at 180 L/min.Gas consumption decreased by ~9% due to lower conductive losses (low-k porous structure) and smoother flow, improving soak uniformity. Maintenance interval extended from 2 to 8 weeks as the ceramic diffusers resisted warping and corrosion, cutting unplanned stops by ~30%.

Usage Instructions for Alumina Porous Ceramic

• Install

  1. Install according to the equipment design and alignment.
  2. Match pore orientation with gas or liquid flow direction.

• Cleaning & Maintenance

  1. Use ultrasonic cleaning or mild chemical solutions.
  2. Avoid harsh acids outside specification and mechanical abrasion.
  3. Regular cleaning keeps pores unblocked and performance stable.

• Storage

  1. Store in a dry, clean, dust-free environment.
  2. Keep the packaging sealed until use.
  3. For long-term storage, use desiccators or vacuum-sealed bags.

• Best Practice

  1. Pre-heat gradually to reduce thermal shock.
  2. Keep within specified thermal and mechanical load limits.
  3. Monitor flow rates to avoid clogging.

• Troubleshooting

  1. Clear blockages by back-flushing with clean air or solvents.
  2. For severe clogging, soak in suitable cleaning agents, then use ultrasonic cleaning.
  3. Ensure rods are fully dried before reuse in high-temperature systems.

Porous Alumina Ceramic Rod FAQ

1. Q: How does Alumina Porous Ceramic perform in corrosive environments?
   A: It provides excellent resistance to a wide range of acids and chemicals, making it suitable for use in corrosive conditions.
2. Q: What pore size range can porous alumina rods achieve?
   A: Pore sizes can be customized from 0.1 µm to 50 µm, making them suitable for both precision filtration and gas diffusion.
3. Q: Are porous alumina ceramic rods resistant to strong chemicals?
   A: Yes, they perform reliably in strong acid and alkali environments without degradation.
4. Q: Can I order custom sizes of alumina porous ceramic core rods?
   A: Absolutely, we manufacture according to drawings or samples, with tolerances up to ±0.2-2 mm
5. Q: How do alumina porous ceramic core rods differ from dense alumina rods?
   A: Porous rods have controlled pore networks for flow, diffusion, and adsorption, while dense rods are used mainly for structural and insulation purposes.
6. Q: Where can I get reliable pricing for alumina porous ceramic core rods quotes?
   A: We provide transparent quotations and quick responses, helping you evaluate costs accurately before bulk orders.
7. Q: Are porous alumina rods reusable after cleaning?
   A: Yes, they can be reused after proper ultrasonic or solvent cleaning, depending on the application.

Porous Alumina Rod Feedback

• ⭐️⭐️⭐️⭐️⭐️
  We bought porous alumina rods for laboratory filtration tests. The pore size control was consistent with ±0.2 mm tolerance, which ensured accurate results.
  -- Dr. Markus Klein, R&D Engineer, Germany
• ⭐️⭐️⭐️⭐️⭐️
  The porous alumina ceramic rods we ordered showed stable performance in corrosive environments, lasting over a year without replacement.
  -- Emily Johnson, Chemical Plant Buyer, USA
  
• ⭐️⭐️⭐️⭐️⭐️
  We compared multiple alumina porous ceramic core rod factories, and this supplier delivered the best balance of customization and lead time.
  -- Daniel Park, Procurement Manager, Korea
• ⭐️⭐️⭐️⭐️⭐️
  Fast response to alumina porous ceramic core rods quotes helped us secure project approval quickly, and the delivered rods performed exactly as specified.
  --Sophie Martin, Environmental Systems Manufacturer, France