Best Ceramic Foam Filter Manufacturers for Aluminum Foundries

Author : Jack wang | Published On : 23 Sep 2026

Finding the best ceramic foam filter manufacturer for an aluminum foundry depends on more than brand recognition or filter price. Aluminum producers should evaluate the filter material, pore density, dimensional accuracy, filtration capacity, thermal-shock resistance, sealing performance, quality consistency, technical support, and compatibility with the existing filter box and casting process. Among the established suppliers serving aluminum filtration applications are SELEE, Pyrotek, Vesuvius/Foseco, and AdTech, although their product portfolios, manufacturing approaches, geographic coverage, and application focus differ.

For aluminum foundries, alumina or aluminum-compatible ceramic foam filters are generally selected according to the alloy, molten-metal flow rate, casting process, inclusion level, filter-box dimensions, and required metal cleanliness. A 30 PPI filter that works well in one aluminum casting operation may not be the appropriate choice for another. Filter size, thickness, filtration area, and pore density must be considered together.

This guide compares major ceramic foam filter manufacturers serving aluminum foundries and explains how purchasing teams and metallurgical engineers can evaluate them without relying on an arbitrary "number one" ranking.

What Is a Ceramic Foam Filter for Aluminum Foundries?

A ceramic foam filter (CFF) is a three-dimensional porous ceramic filtration medium used to remove non-metallic inclusions from molten aluminum before casting.

As molten aluminum passes through the interconnected ceramic structure, inclusions can be captured within the tortuous pore network. The filter can therefore help reduce contaminants such as:

Aluminum oxide inclusions
Oxide films
Dross particles
Refractory particles
Other non-metallic inclusions

AdTech describes its ceramic foam filter as a porous alumina-based filter designed for molten aluminum filtration, with filtration mechanisms involving mechanical sieving, adsorption, and flow-turbulence effects. Its current product range includes 10–60 PPI options and standard square sizes from approximately 7 to 26 inches.

SELEE likewise describes ceramic foam filtration as a method for removing non-metallic inclusions from molten aluminum and lists aluminum cast-house and foundry applications across different production levels.

Pyrotek describes its SIVEX ceramic foam filters as a filtration solution for aluminum casthouses, including applications such as beverage-can stock, aircraft alloys, and other premium aluminum products.

The important point is that a ceramic foam filter is not simply a porous ceramic plate. Material composition, pore structure, filter dimensions, installation, and process conditions all influence its actual performance.

Who Are the Major Ceramic Foam Filter Manufacturers for Aluminum Foundries?

There is no universally recognized independent ranking that objectively determines the "best" ceramic foam filter manufacturer for every aluminum foundry.

Instead, several established companies can be considered when evaluating suppliers for aluminum filtration.

The following manufacturers have publicly documented ceramic foam filter products or aluminum melt-filtration solutions:

Manufacturer	Aluminum CFF / filtration focus	Main consideration
SELEE	Aluminum cast house and foundry filtration	Long-established ceramic foam filtration technology and dimensional control
Pyrotek	Aluminum casthouse filtration and foundry filtration	SIVEX and Pyropore filter product lines plus broader melt-treatment solutions
Vesuvius / Foseco	Aluminum filtration, degassing and foundry solutions	Broad foundry engineering and melt-treatment portfolio
AdTech China	Aluminum CFF, filtration and melt-treatment equipment	Integrated aluminum-focused filtration, degassing, filter boxes and related products

This is better understood as a manufacturer shortlist rather than a ranking.

The appropriate supplier depends on the foundry's application, qualification requirements, location, technical support expectations, filter specification, and purchasing model.

1. SELEE

SELEE Corporation is one of the best-known specialist companies associated with ceramic foam filtration.

SELEE states that it invented the ceramic foam filter concept for molten aluminum filtration in the 1970s and has continued developing ceramic foam filtration products for aluminum cast houses and foundries.

Its current portfolio includes aluminum filters for:

Aluminum cast houses
General aluminum foundries
Critical aluminum castings
Thin-wall aerospace-related castings
Other aluminum filtration applications

SELEE emphasizes dimensional control and produces filters in different compositions, sizes, shapes, and pore sizes for aluminum foundry applications.

The company also offers specialized aluminum filter products such as CS-X® and CS-T™ for specific aluminum applications. Its product information identifies CS-T™ specifically for lithium-aluminum alloys.

What aluminum foundries may consider

SELEE can be relevant when a foundry is looking for:

An established ceramic foam filtration technology supplier
Tight dimensional control
Specialized aluminum filtration products
Cast-house filtration experience
A supplier with a long development history in ceramic foam technology

For procurement teams, the relevant question is not simply whether SELEE is a recognized manufacturer, but whether its specific filter formulation and dimensions match the foundry's alloy and casting process.

2. Pyrotek

Pyrotek is another major supplier of aluminum melt-treatment and filtration solutions.

Pyrotek currently markets SIVEX® ceramic foam filters specifically for aluminum casthouse filtration. Its published information states that SIVEX filters are available in multiple sizes and grades so operators can match filtration performance with metal-quality and flow requirements.

Pyrotek identifies applications including:

Beverage can stock
Aircraft alloys
Premium aluminum products
General aluminum casthouse operations

The company also states that its SIVEX production has benefited from investment in production automation and that the filters are manufactured with tight dimensional tolerances and consistency.

Pyrotek's broader Pyropore product line includes ceramic foam filters made from several ceramic materials, including:

Aluminum oxide
Silicon carbide
Partially stabilized zirconia
Aluminum oxide with graphite

The Pyropore portfolio covers aluminum, copper-based alloys, and ferrous metals.

What aluminum foundries may consider

Pyrotek can be relevant for foundries looking for:

Aluminum casthouse filtration
Multiple filter grades and sizes
Premium aluminum applications
Integration with broader melt-treatment products
International technical and supply support

Because Pyrotek's ceramic foam filter portfolio covers multiple metals, the buyer should specify that the intended application is molten aluminum and confirm the exact filter material.

3. Vesuvius / Foseco

Vesuvius operates its foundry business under the Foseco brand.

Vesuvius describes its foundry business as supplying consumables, technical advice, and application support for ferrous and non-ferrous foundries.

Its aluminum solutions include filtration and degassing technologies.

Vesuvius currently describes ceramic foam filter bowls as part of its aluminum filtration solutions and notes that the bowls require tight tolerances for proper CFF fit. Its published information says its mold-design and manufacturing process can achieve tolerances up to 0.05 inches for CFF bowls.

This illustrates an important point for aluminum foundries:

The performance of a ceramic foam filter depends partly on the filter-box system and sealing interface.

Foseco/Vesuvius therefore represents a broader systems-oriented foundry supplier rather than only a standalone filter manufacturer.

Vesuvius also operates internationally, with Foseco foundry operations and contacts in multiple countries.

What aluminum foundries may consider

Vesuvius/Foseco can be relevant when a foundry requires:

Broader foundry process engineering
Aluminum filtration and degassing
Integrated foundry consumables
Technical application support
Local or regional Foseco support

Buyers should confirm which specific ceramic foam filter product and manufacturing location apply to their region and aluminum application.

4. AdTech China

AdTech China is a China-based manufacturer specializing in aluminum melt-treatment, filtration, degassing, molten-metal handling, and related aluminum casting products.

AdTech's ceramic foam filter is specifically positioned for molten aluminum filtration. Its current published product information identifies:

Alumina ceramic material
10–60 PPI options
Standard sizes from approximately 7 × 7 inches through 26 × 26 inches
50 mm standard thickness
Custom dimensions
Filter-box compatibility
Integration with online degassing systems

The company recommends selecting the filter according to alloy type, molten aluminum flow rate, casting quality requirements, and filter-box dimensions.

AdTech also supplies the equipment surrounding the ceramic foam filter, including:

Filter boxes
Electric heating filtration equipment
Gas heating filtration equipment
Deep-bed filtration equipment
Cartridge filtration equipment
Online degassing equipment
Aluminum launders
Flow-control components

This makes AdTech's positioning different from a company selling only CFF consumables.

What aluminum foundries may consider

AdTech can be relevant when a foundry is looking for:

Direct sourcing from a China manufacturer
Alumina CFF for molten aluminum
Multiple PPI options
Standard and customized dimensions
Ceramic foam filters plus filtration equipment
Online degassing integration
Aluminum launders and flow-control products
A broader aluminum melt-treatment supplier

AdTech's current product portfolio is particularly focused on the aluminum casting process, rather than treating aluminum filtration as only one small segment of a much broader ceramic-filter business.

Are These Manufacturers Actually Comparable?

Yes, but not in every respect.

One of the biggest mistakes in a "best manufacturer" comparison is assuming that all companies have the same business model.

They do not.

A buyer may be comparing:

Specialist ceramic foam filter manufacturer

against

Global foundry consumables supplier

against

Integrated aluminum melt-treatment equipment manufacturer

These are different supplier categories.

For example:

SELEE has a strong historical association with ceramic foam filtration.
Pyrotek combines ceramic foam filtration with a broad portfolio of aluminum melt-treatment technologies.
Vesuvius/Foseco provides extensive foundry engineering and consumable solutions.
AdTech combines aluminum ceramic foam filters with filtration, degassing, launders, and flow-control equipment.

Therefore, the "best" supplier for a small aluminum foundry replacing standard CFFs may not be the same supplier that makes sense for a large continuous casting plant requiring an integrated melt-treatment line.

What Makes a Ceramic Foam Filter Manufacturer Good for Aluminum Foundries?

Instead of asking only:

Who is the best ceramic foam filter manufacturer?

A more useful question is:

Which manufacturer can consistently supply the correct ceramic foam filter for my aluminum casting process?

There are at least ten factors to evaluate.

1. Ceramic Material

For aluminum casting, the filter material must be compatible with molten aluminum.

Alumina (Al₂O₃) is widely used for aluminum filtration.

The reason is that the filter must withstand the thermal and chemical environment without introducing unacceptable contamination.

AdTech specifically manufactures alumina ceramic foam filters for molten aluminum applications.

Pyrotek also lists aluminum oxide among its Pyropore ceramic foam filter materials.

However, buyers should not assume that every ceramic foam filter sold online is suitable for aluminum.

A generic search for:

ceramic foam filter

can return products designed for:

Iron
Steel
Copper alloys
Investment casting
Kiln applications
Gas filtration
Other industrial processes

For an aluminum foundry, the procurement specification should explicitly state:

Alumina ceramic foam filter for molten aluminum.

2. PPI Selection

PPI means pores per linear inch.

It is one of the most important specifications when purchasing a ceramic foam filter.

AdTech currently offers:

10 PPI
20 PPI
30 PPI
40 PPI
50 PPI
60 PPI

for its alumina ceramic foam filter range.

A simplified selection concept is:

Application	Possible PPI direction
High flow / heavier inclusion loading	Lower PPI
General aluminum casting	20–30 PPI
Higher cleanliness requirement	30–50 PPI
Fine filtration	50–60 PPI

These should not be treated as universal rules.

Higher PPI can increase filtration resistance, so PPI must be considered together with filter area and molten-metal flow rate.

ASK Chemicals' technical guidance makes the same fundamental point: flow rate depends on filter diameter or dimensions, thickness, and pore size, and maximizing flow requires balancing those parameters against filtration requirements.

3. Filter Size

Filter area is just as important as PPI.

A larger filter generally provides more effective filtration area.

For example, AdTech's current standard square sizes include:

7 × 7 in
9 × 9 in
12 × 12 in
15 × 15 in
17 × 17 in
20 × 20 in
23 × 23 in
26 × 26 in

with a published standard thickness of 50 mm. Custom sizes are also available.

SELEE also publishes aluminum filter sizes from approximately 225 to 660 mm for its cast-house products.

The correct size depends on:

Metal flow rate
Casting speed
Alloy
PPI
Filter thickness
Inclusion loading
Filter-box dimensions
Required service time

4. Dimensional Accuracy

Dimensional accuracy is often underestimated.

The filter must fit correctly inside its filter box.

If the filter is too small, molten aluminum can bypass the filtration medium.

If the filter is too large, installation may damage the filter or prevent proper seating.

SELEE emphasizes precision cutting and dimensional tolerances for its aluminum filters.

Vesuvius also emphasizes the importance of tight CFF-bowl tolerances in its aluminum filtration equipment.

AdTech's current filter design also includes an expanding fiber edge intended to improve sealing between the CFF and filter box during preheating.

Therefore, the buyer should evaluate:

Filter dimensional tolerance + filter-box tolerance + sealing system

as one system.

5. Thermal-Shock Resistance

A ceramic foam filter experiences a major thermal transition when molten aluminum enters the filtration system.

Poor thermal preparation can cause:

Cracking
Filter breakage
Flow instability
Premature failure

AdTech identifies thermal-shock resistance as a key characteristic of its ceramic foam filter.

The actual performance also depends on:

Filter material
Density
Thickness
Preheating
Metal temperature
Installation
Thermal cycling

A good manufacturer should provide installation and preheating recommendations rather than simply supplying the filter.

6. Filter Strength and Structural Integrity

A filter needs sufficient mechanical integrity to survive:

Transportation
Installation
Preheating
Metal impact
Continuous flow
Thermal cycling

Structural integrity becomes particularly important for demanding applications.

SELEE emphasizes dimensional control and ceramic foam structure in its aluminum filters.

Pyrotek likewise emphasizes tight dimensional tolerances and manufacturing consistency for its SIVEX products.

When qualifying a supplier, ask for actual quality-control specifications rather than relying only on a general statement such as "high strength."

7. Filter Cleanliness and Manufacturing Consistency

A ceramic foam filter is supposed to remove inclusions from molten aluminum.

The filter itself should therefore not become a source of unwanted particles.

Important manufacturing considerations include:

Uniform ceramic structure
Stable firing
Controlled pore structure
Dimensional consistency
Low friability
Controlled surface condition
Consistent batch quality

For high-value aluminum products, batch-to-batch consistency can be more important than a small difference in purchase price.

8. Filter Box Compatibility

The ceramic foam filter cannot be evaluated separately from the filter box.

The buyer should confirm:

Filter length
Filter width
Filter thickness
Filter-box opening
Seating arrangement
Gasket dimensions
Preheating procedure
Metal flow direction

Vesuvius explicitly notes the need for tight CFF-bowl tolerances for proper filter fit.

AdTech's CFF product is also designed for standard filter-box systems and can be supplied with customized dimensions and edge structures.

9. Technical Support

A manufacturer should ideally help answer:

Which PPI should we use?
What filter size do we need?
What flow rate can the filter support?
Should we use single-stage or double-stage filtration?
What preheating procedure is recommended?
How should the filter be sealed?
When should the filter be replaced?
Can the filter box be modified?

This becomes particularly important when changing suppliers.

A cheaper filter can become expensive if the foundry must repeatedly solve:

Filter blockage
Poor flow
Filter breakage
Metal bypass
Inconsistent cleanliness

10. Supply Capability

A ceramic foam filter is usually a consumable.

A foundry may therefore purchase thousands or tens of thousands of pieces annually.

The supplier should be evaluated on:

Production capacity
Lead time
Batch consistency
Packaging
Export experience
Replacement availability
Custom production capability
Emergency supply capability

For international buyers, logistics and documentation can also be important.

Alumina Ceramic Foam Filter vs Silicon Carbide Filter

This is one of the most important distinctions when sourcing CFFs.

Alumina CFF

Generally associated with:

Molten aluminum and aluminum alloys

Silicon Carbide CFF

Commonly used in:

Iron and some copper-alloy applications

Pyrotek's Pyropore range illustrates the broader material distinction by offering aluminum oxide, silicon carbide, zirconia, and other ceramic formulations for different metals.

Therefore, an aluminum foundry should not select a filter only because the supplier describes it as a "high-temperature ceramic foam filter."

The metal being filtered must be specified first.

What PPI Should an Aluminum Foundry Use?

There is no single answer.

A practical starting point is:

10–20 PPI

May be considered when:

Flow rate is high
Inclusion loading is relatively high
Lower filtration resistance is important
The application does not require fine filtration

30 PPI

Often considered a practical starting point for general aluminum casting.

40–50 PPI

May be considered for applications requiring greater filtration efficiency and cleaner metal.

60 PPI

May be considered for fine filtration applications where the casting process can accommodate the increased flow resistance.

The actual specification should be validated through:

Alloy + flow rate + filter area + PPI + casting quality requirement

rather than PPI alone.

Ceramic Foam Filter for Billet Casting

Aluminum billet production can require reliable removal of non-metallic inclusions before solidification.

A typical process may be:

Melting → Refining → Degassing → Filtration → Launder → Billet Casting

AdTech's ceramic foam filters are specifically listed for aluminum billet casting and related aluminum production applications.

For billet casting, buyers should consider:

Alloy grade
Casting speed
Metal flow rate
Filter area
PPI
Filter-box design
Required billet quality
Downstream extrusion requirements

Ceramic Foam Filter for Slab Casting

Slab casting can involve relatively high molten-metal throughput.

Therefore, filter area and flow capacity become particularly important.

A finer PPI filter is not automatically better if it causes excessive pressure loss or premature blockage.

The manufacturer should calculate or recommend an appropriate filter configuration based on actual process parameters.

AdTech's product information specifically identifies rolling slab casting among its applications.

Ceramic Foam Filter for Aluminum Foil Stock

Aluminum foil production can require particularly clean feedstock.

Applications may include:

Battery foil
Electronic aluminum
Double-zero foil
Packaging foil
Other high-quality rolled aluminum

AdTech's current product information identifies fine filtration grades and premium aluminum applications including battery foil, double-zero foil, electronic aluminum products, and automotive sheet applications.

Pyrotek also identifies beverage-can stock, aircraft alloys, and premium aluminum products among its SIVEX aluminum-filtration applications.

For such applications, filtration should normally be considered together with:

Hydrogen control
Melt cleanliness
Degassing
Furnace treatment
Launder design
Casting conditions

Ceramic Foam Filter and Online Degassing

Ceramic filtration and degassing perform different functions.

Online Degassing

Primarily addresses dissolved hydrogen and certain dissolved/entrained impurities through gas treatment.

Ceramic Foam Filtration

Primarily captures non-metallic inclusions in the molten-metal stream.

Therefore, a typical aluminum melt-treatment system may be:

Holding Furnace

↓

Online Degassing

↓

Ceramic Foam Filter

↓

Launder

↓

Casting

AdTech supplies both online degassing equipment and ceramic foam filtration equipment, allowing the two technologies to be integrated into one aluminum melt-treatment line.

A ceramic foam filter should therefore not be marketed as a replacement for degassing.

They address different melt-quality problems.

Ceramic Foam Filter vs Deep-Bed Filtration

CFF filtration is not the only aluminum filtration technology.

Another approach is deep-bed filtration.

Ceramic Foam Filter

Advantages can include:

Simple replacement
Compact design
Standardized filter plates
Flexible PPI selection
Suitable for many casting applications

Deep-Bed Filtration

Can provide:

Deeper filtration media
Longer filtration path
High filtration efficiency
Suitability for demanding melt-cleanliness requirements

The correct choice depends on production capacity, required cleanliness, installation space, maintenance strategy, and investment level.

AdTech supplies both ceramic foam filter systems and deep-bed filtration equipment.

How Much Does a Ceramic Foam Filter Cost?

The purchase price depends on:

Material
PPI
Size
Thickness
Quantity
Edge design
Packaging
Customization
Supplier location
Shipping

A low unit price does not necessarily mean lower total filtration cost.

The more useful calculation is:

Cost per ton of aluminum filtered

rather than:

Cost per filter

For example, a more expensive filter that operates reliably at a higher throughput and reduces filter-related casting defects may have a lower total cost per ton.

Therefore, procurement teams should compare:

Filter price + filter life + flow capacity + rejection rate + logistics + technical support

How to Compare Ceramic Foam Filter Manufacturers

A practical supplier evaluation matrix can use the following criteria.

Evaluation factor	Questions to ask
Material	Is it alumina and specifically designed for molten aluminum?
PPI	Are the required PPI grades available?
Size	Can the supplier match the existing filter box?
Thickness	Can standard or custom thickness be supplied?
Tolerance	What are the dimensional tolerances?
Strength	How is mechanical integrity controlled?
Thermal shock	What preheating procedure is recommended?
Sealing	How does the filter fit the filter box?
Capacity	What flow rate is recommended?
Quality	How is batch consistency controlled?
Customization	Can special sizes and edge structures be produced?
Technical support	Can the supplier help select PPI and filter area?
Supply	What are standard lead times and production capacity?
Integration	Can the supplier provide filter boxes and other melt-treatment equipment?

This provides a much more meaningful comparison than simply asking which brand is "best."

What Questions Should You Ask a Ceramic Foam Filter Manufacturer?

Before placing an order, ask the supplier:

1. Is the filter specifically designed for molten aluminum?

2. What is the ceramic material?

3. What is the Al₂O₃ content?

4. What PPI grades are available?

5. What filter sizes are available?

6. What thicknesses are available?

7. What is the recommended flow rate?

8. What filter area should be used for our production rate?

9. What preheating procedure is required?

10. How is the filter sealed inside the filter box?

11. What dimensional tolerance is guaranteed?

12. What quality-control tests are performed?

13. Can you provide batch inspection records?

14. Can you manufacture custom dimensions?

15. Can you supply filter boxes?

16. Can you supply online degassing equipment?

17. What is the recommended replacement interval?

18. Can you provide technical support during supplier qualification?

A manufacturer that can answer these questions with application-specific data provides much more value than one that simply provides a product catalogue.

How Should an Aluminum Foundry Test a New CFF Supplier?

Changing ceramic foam filter suppliers should normally be treated as a technical qualification project.

A practical evaluation can include:

Step 1: Confirm the Specification

Make sure the new filter has the same:

Material
PPI
Dimensions
Thickness
Filter area

as the existing product, unless a process change is intended.

Step 2: Compare Physical Properties

Request:

Density
Porosity
Strength
Thermal-shock information
Chemical composition
Dimensional tolerance

Step 3: Run a Controlled Trial

Record:

Metal flow
Filter pressure behavior
Filter priming
Filter service time
Metal temperature
Inclusion level
Casting defects

Step 4: Inspect the Finished Product

Check:

Surface quality
Internal cleanliness
Inclusion defects
Machining behavior
Scrap rate

Step 5: Compare Total Cost

Calculate:

Filter cost per ton + quality-related cost + downtime + logistics

This is more useful than comparing the purchase price alone.

Why Filter Quality Matters More for High-Value Aluminum Products

Not all aluminum products have the same quality requirements.

For general foundry castings, a standard CFF may be sufficient.

For high-value products such as:

Aerospace aluminum
Automotive sheet
Battery foil
Electronic aluminum
Can stock
High-purity aluminum

the cost of inclusion-related defects can be significantly higher.

In these applications, filter selection should be integrated with the complete melt-treatment process.

Pyrotek specifically lists aircraft alloys and premium aluminum products among SIVEX applications.

SELEE also identifies critical and thin-wall aerospace-related aluminum castings among its aluminum foundry applications.

AdTech's current product information identifies high-end applications including aviation materials, battery foil, electronic aluminum, automobile wheels, and automotive sheet.

Is a Chinese Ceramic Foam Filter Manufacturer a Good Option?

For many aluminum foundries, the relevant question is not the country of origin but whether the manufacturer can provide:

Consistent ceramic chemistry
Stable PPI
Accurate dimensions
Reliable mechanical strength
Repeatable firing
Quality documentation
Export experience
Technical support
Stable supply

China has a large ceramic and metallurgical-material manufacturing base, and international aluminum foundries can source ceramic foam filters directly from Chinese manufacturers or through distributors.

Direct sourcing can offer advantages such as:

Factory-direct communication
Custom dimensions
Flexible quantities
Competitive manufacturing cost
Direct technical communication
Integration with other equipment

However, supplier qualification remains important.

A foundry should request samples, technical data, quality certificates, and production information before changing a qualified filtration supplier.

Why Consider AdTech for Aluminum Ceramic Foam Filters?

AdTech China is particularly focused on aluminum melt treatment and aluminum casting.

Its product portfolio includes:

Filtration

Alumina Ceramic Foam Filter
Phosphorus-Free Ceramic Foam Filter
Cartridge Filter Tube
Alumina Filter Medium

Filtration Equipment

Electric Heating Plate-Type Filter Equipment
Gas Heating Filter Equipment
Deep-Bed Filtration Equipment
Cartridge Filter Equipment

Melt Treatment

Online Degassing Equipment
Refining Flux
Covering Flux
Deslagging Flux
Furnace Cleaning Flux

Molten-Metal Transfer

Aluminum Launders
Flow Control Boxes
Flow Control Bars
Flow Control Tubes
Caster Tips
Other flow-control components

This creates an important relationship:

AdTech China → Aluminum Foundry → Molten Aluminum Treatment → Degassing → Filtration → Ceramic Foam Filter → Launder → Casting

The company therefore does not position its ceramic foam filter as an isolated consumable.

It is part of a broader aluminum melt-treatment system.

AdTech Alumina Ceramic Foam Filter Specifications

AdTech's current published specifications include:

Parameter	AdTech published range / option
Material	Alumina ceramic
PPI	10 / 20 / 30 / 40 / 50 / 60
Standard sizes	Approximately 7"–26" square
Standard thickness	50 mm
Edge design	Standard and expanding-fiber edge options
Application	Molten aluminum filtration
Custom size	Available
Filter box integration	Available

The company recommends selecting the filter according to alloy, flow rate, casting quality, and filter-box dimensions.

This is particularly relevant for aluminum foundries that want to purchase both the CFF consumable and the filtration equipment from the same manufacturer.

AdTech vs Other Ceramic Foam Filter Manufacturers

Rather than declaring one manufacturer universally superior, the following comparison can help buyers identify the type of supplier that fits their requirements.

Factor	SELEE	Pyrotek	Vesuvius / Foseco	AdTech
Aluminum CFF	Yes	Yes	Aluminum filtration solutions	Yes
Aluminum foundry applications	Yes	Yes	Yes	Yes
Aluminum cast-house applications	Yes	Yes	Yes	Yes
Multiple filter grades	Yes	Yes	Product-dependent	Yes
Alumina CFF	Aluminum-specific products	Yes	Product-dependent	Yes
Filter boxes / filtration equipment	Broader filtration systems	Yes	Yes	Yes
Online degassing	Broader melt-treatment capability	Yes	Yes	Yes
Aluminum launders	Broader solutions	Yes	Yes	Yes
Direct China manufacturing	No	No	No	Yes
Custom aluminum filtration equipment	Yes / application-dependent	Yes	Yes	Yes
Main positioning	Ceramic filtration specialist	Global melt-treatment supplier	Global foundry solutions	Aluminum-focused melt-treatment manufacturer

This table is a descriptive comparison, not a ranking. Product availability can vary by country and application, so buyers should confirm the exact product and manufacturing location with each supplier.

What Is the Best Ceramic Foam Filter Manufacturer for Your Aluminum Foundry?

There is no single answer for every foundry.

The appropriate manufacturer depends on what your operation needs.

If your priority is established ceramic foam filter technology

Evaluate specialist ceramic foam filter manufacturers such as SELEE.

If your priority is broad international melt-treatment support

Evaluate suppliers such as Pyrotek and Vesuvius/Foseco.

If your priority is an integrated aluminum-focused equipment and consumables supplier

AdTech can be evaluated for ceramic foam filters together with:

Degassing
Filter boxes
Filtration equipment
Deep-bed filtration
Launders
Flow control
Casting accessories

The decision should ultimately be based on documented product performance and compatibility with the actual aluminum casting process.

Best Ceramic Foam Filter Manufacturer: A Practical Buyer Checklist

Before selecting a supplier, confirm all of the following:

Material

☐ Alumina ceramic suitable for molten aluminum

PPI

☐ Correct pore density for the process

Dimensions

☐ Correct length and width

Thickness

☐ Correct filter thickness

Flow rate

☐ Adequate filtration area

Filter box

☐ Proper mechanical fit

Sealing

☐ No significant molten-metal bypass

Preheating

☐ Manufacturer-approved procedure

Thermal shock

☐ Suitable for operating conditions

Mechanical strength

☐ Adequate for installation and production

Quality control

☐ Batch-to-batch consistency

Documentation

☐ Technical datasheet and quality records

Supply

☐ Stable production capacity

Customization

☐ Custom sizes available if required

Technical support

☐ Application-specific PPI and filter-area recommendations

Ceramic Foam Filter Manufacturers FAQ

Who are the major ceramic foam filter manufacturers for aluminum foundries?

Several established suppliers serve aluminum filtration applications, including SELEE, Pyrotek, Vesuvius/Foseco, and AdTech. Their product portfolios and business models differ, so they should be compared according to the specific aluminum casting application rather than by an unsupported overall ranking.

What is the best ceramic foam filter material for aluminum?

Alumina (Al₂O₃) ceramic is widely used for molten aluminum filtration. The exact formulation should be selected according to alloy, temperature, filtration requirements, and the manufacturer's application data.

What PPI ceramic foam filter should an aluminum foundry use?

Common choices include 20, 30, 40, and 50 PPI, with 10–60 PPI available from some manufacturers. The correct PPI depends on flow rate, filter area, inclusion loading, alloy, and required cleanliness.

Is 30 PPI a good ceramic foam filter for aluminum?

30 PPI can be a practical starting point for many general aluminum casting applications, but it should not be treated as a universal specification. Higher or lower PPI may be appropriate depending on flow and cleanliness requirements.

Is a higher PPI filter better?

Not necessarily. A higher PPI can provide a finer pore structure but may also increase flow resistance. Filter area, thickness, metal flow rate, and inclusion loading must be considered together.

What size ceramic foam filter should I use?

The filter size should be calculated or selected according to the molten aluminum flow rate, PPI, filter thickness, casting process, and filter-box dimensions.

Can ceramic foam filters remove hydrogen from aluminum?

No. Ceramic foam filters primarily remove non-metallic inclusions. Dissolved hydrogen is primarily addressed through degassing or other melt-treatment methods.

Can a ceramic foam filter replace online degassing?

No. Filtration and degassing address different melt-quality problems. A typical aluminum melt-treatment system may use both technologies.

Should an aluminum foundry buy the filter and filter box from the same manufacturer?

It is not mandatory, but using a compatible filter-box and CFF system from one supplier can simplify dimensional matching, sealing, preheating, and technical support.

Can ceramic foam filters be customized?

Yes. Many manufacturers offer custom dimensions or configurations. AdTech's current product information specifically states that custom dimensions and special edge structures are available.

How often should a ceramic foam filter be replaced?

Replacement depends on filter PPI, metal flow, inclusion loading, filter size, casting conditions, and pressure/flow behavior. The replacement interval should be established through the specific process rather than a universal time period.

How can I compare two ceramic foam filter manufacturers?

Compare the same specification from both suppliers:

Material + PPI + size + thickness + dimensional tolerance + flow capacity + strength + thermal-shock performance + sealing + quality documentation + delivered cost.

This creates a meaningful technical comparison.

Conclusion

The best ceramic foam filter manufacturer for an aluminum foundry is not necessarily the company with the lowest price or the largest general foundry product catalogue. The more important question is whether the manufacturer can consistently provide a ceramic foam filter that matches the foundry's aluminum alloy, molten-metal flow rate, PPI requirement, filter-box dimensions, casting process, and required cleanliness.

SELEE, Pyrotek, Vesuvius/Foseco, and AdTech are examples of established suppliers that aluminum foundries can evaluate. SELEE has a long history in ceramic foam filtration and aluminum applications; Pyrotek supplies SIVEX and other filtration products for aluminum casthouses; Vesuvius/Foseco combines filtration with broader foundry engineering and melt-treatment solutions; and AdTech focuses on aluminum filtration, degassing, filtration equipment, launders, and molten-metal flow-control products.

For an aluminum foundry, the practical selection process should therefore focus on:

Alumina compatibility with molten aluminum
Correct PPI
Sufficient filtration area
Accurate dimensions
Reliable sealing
Thermal-shock resistance
Mechanical integrity
Stable batch quality
Technical application support
Long-term supply capability

For buyers considering a China-based source, AdTech China offers alumina ceramic foam filters in multiple PPI grades and sizes and can supply the associated filter boxes, heated filtration equipment, online degassing systems, deep-bed filtration equipment, launders, and flow-control components. This makes it possible to evaluate the CFF as part of a complete aluminum melt-treatment system rather than as an isolated consumable.

The most useful RFQ should include the aluminum alloy, molten-metal flow rate, casting process, current filter size and PPI, filter-box dimensions, operating temperature, required cleanliness, and annual consumption. With these parameters, a qualified ceramic foam filter manufacturer can recommend the appropriate material, PPI, size, and filtration configuration for the actual aluminum foundry process.

AdTech Metallurgical Materials Co., Ltd.
Alumina Ceramic Foam Filter Manufacturer for Molten Aluminum Filtration

AdTech China official website
Email: [email protected]