Cordierite kiln Furniture

Our cordierite kiln furniture is manufactured to be porous and low density, often making it the most cost-effective material for products that support firing, sintering, and other heat-treatment processes operating at temperatures between 1000ºC-1300ºC.

Al2O3 %: 40~46%

Bulk density: 1.82~2.0 g/cm³

Apparent porosity: 25~29%

Expansion: 2.2~2.6 (20℃-1000℃/10-6K-1)

Thermal shock resisitance: *****

Max working temperature: 1250~1350℃


   PRODUCT DESCRIPTION

Our cordierite kiln furniture is manufactured to be porous and low density, often making it the most cost-effective material for products that support firing, sintering, and other heat-treatment processes operating at temperatures between 1000ºC-1300ºC.

Our cordierite materials have been developed over several decades to give optimum performance: Very low creep rates, ensuring a longer life for setters, cranks, batts, and support systems being used in a wide range of heat treatment processes working at temperatures up to 1300ºC. Extremely resistant to thermal shock cracking, allowing use where very rapid heating and cooling rates are present. Stable at high temperatures; products can be thermally cycled hundreds (sometimes thousands) of times without degradation. Low density, giving lightweight setters, cranks, and batts that save energy in every firing. Sunrise provides one of the most extensive ranges of cordierite kiln furniture shapes and sizes.


Characteristic:

1. Lightweight & High mechanical strength: Features a lightweight structure and excellent load-bearing capacity, reducing furnace load and energy consumption effectively.

2. Superior thermal insulation performance: Low thermal conductivity minimizes heat loss and greatly improves the overall thermal efficiency of industrial kilns.

3. High specific surface area: Uniform porous microstructure provides a large specific surface area, ideal for sintering, catalysis and binder removal processes.

4. Excellent chemical corrosion resistance: Inert chemical properties resist corrosion from acid-base powders, lithium salts and flue gas, avoiding product contamination at high temperatures.

5. Good air permeability: Optimized breathable structure ensures smooth air circulation and efficient exhaust of degassing waste gas for stable and consistent product quality.

6. Outstanding high-temperature resistance: Maintains stable structural performance under long-term high-temperature service without softening or deformation.

7. Low thermal expansion coefficient & superior thermal shock resistance: Ultra-low thermal expansion enables excellent resistance to frequent heating and cooling cycles, effectively preventing cracking and extending service life.

8. High elastic modulus & stable structure: High rigidity and anti-deformation performance ensure long-term structural stability under heavy load and cyclic high-temperature working conditions.


Application:

1. Ceramic Industry (Largest Consumption: Kiln Shelves & Pusher Plates)

Suitable for tunnel kilns, shuttle kilns, and roller kilns; available as solid plates, porous breathable plates, ultra-thin supporting plates, and kiln car surface panels.

  • Architectural ceramics: Supporting shelves and base plates for floor tiles, antique tiles and wall tiles; capable of multi-layer stacking without cracking under rapid temperature changes.

  • Sanitary ceramics: Bearing plates for toilets, basins and sanitary wares, preventing sticking sand and deformation of finished products.

  • Daily & art ceramics: Base plates for tableware, tea sets and craft ceramics inside saggers. Low heat storage saves energy and shortens firing cycles.

  • Glass-ceramics & ceramic glazes: Base plates for glass crystallization and annealing, no chemical reaction with glaze or molten glass to guarantee surface gloss.

2. Sintering of Electronic & Magnetic Materials

High purity and low impurity release avoid contamination of green bodies.

  • Ferrite magnetic materials: Porous bearing plates for Mn-Zn and Ni-Zn magnetic cores; good air permeability for sufficient binder removal.

  • Electronic ceramic components: Sintering base plates for resistors, capacitors and varistor ceramics.

  • Piezoelectric ceramics & LTCC components: Separator plates for low-temperature co-fired ceramics, free of pinholes and color difference defects.

3. Calcination of Lithium Battery Cathode Materials

Pusher plates and sagger base plates for ternary lithium, lithium iron phosphate and lithium manganate precursors.

  • Resist alkaline corrosion of lithium salts; no impurity precipitation to pollute cathode powder at high temperature.

  • Stable under repeated heating and cooling cycles for continuous roller kiln production, lower cost alternative to corundum plates.

4. Powder Metallurgy & Cemented Carbide Parts

  • Base plates for pre-sintering and final firing of copper-based, iron-based powder metallurgy parts and small cemented carbide inserts.

  • Separator plates for MIM (Metal Injection Molding) debinding and sintering integrated kilns; porous structures facilitate discharge of debinding waste gas.

5. Heat Insulation & Electric Heating Equipment for Industrial Furnaces

  • Lining insulation plates, flame separation plates and furnace bottom base plates for box furnaces, muffle furnaces and laboratory kilns.

  • Insulating support frames for heating elements of industrial ovens and drying lines; low thermal conductivity reduces energy consumption.

  • Heat exchange ceramic plates for flue-curing rooms and hot air circulation systems, resistant to thermal cycling and corrosive media.

6. Commercial Baking & High-Temperature Kitchen Utensils

Uniform heat storage and moisture absorption deliver stable baking temperature.

  • Baking stones for pizza ovens and bread kilns;      absorb surface moisture of dough for crisp crusts.

  • Constant-temperature base plates and inner lining panels for commercial baking ovens.

7. Other Special High-Temperature Scenarios

  • Solar thermal power: Medium-low temperature insulation support plates for heat collection pipelines, resisting drastic day-night temperature fluctuations.

  • Non-ferrous metal heat treatment: Bearing plates for annealing and aging of small aluminum and copper alloy workpieces.

  • Catalyst substrates: Lightweight high-temperature carrier plates for laboratory tail gas and chemical catalytic equipment.

Product Types & Matching Applications

  • Solid thick plates: Heavy-duty large ceramic products, kiln car countertops

  • Perforated porous plates: Magnetic materials, lithium battery powder, MIM debinding & sintering

  • Ultra-thin plates: Light, small workpieces in fast-firing roller kilns for energy saving

  • Custom grooved special-shaped plates: Matching separators and base plates for dedicated saggers


   TECHNIQUE DATA

Properties

Materials for ceramic kiln furniture

L-Category

F-Category

R-Category

I-Category

C-Category

LUA

LEN

FON

FAC

ROY

LUK

COB

Mineralogy

Cordierite-
  Mullite

Cordierite-
  Mullite

Cordierite-
  Mullite

Cordierite-
  Mullite

Cordierite-
  Mullite

Cordierite-
  Mullite

Cordierite-
  Mullite

Chemical
  composition

Al2O3 %

40

41

36

39

41

43

46

SiO2 %

49

48

52

49

47

46

44

MgO %

6.5

7.0

7.0

8.0

7.0

7.0

6.0

Bulk density g/cm3

1.95

1.90

1.85

1.82

1.95

1.82

2.00

Apparent porosity %

26

28

28

29

26

33

25

Expansion(20-1000/10-6K-1)

2.3

2.3

2.6

2.2

2.2

2.5

3.1

Thermal shock resisitance

*****

*****

*****

*****

*****

*****

*****

Max working temperature

1300

1250

1300

1320

1280

1280

1350

Note: Data for the properties listed above are the typical results from
  test pieces and therefore should be used only as guidance.


Material

Available   Items

Max. Working Temperature

Cordierite-Mullite

 

Saggar,   Setter Slab, Props (Support), Fitting Caps, Splicer, Pusher Batts,   Extruded Batts, Perforated Batts, Grooved Batts, Crank, Roof Plate, Kiln Car   parts, Burner Block, Retaining Bar, Cast Stools, Roller Brick, Profile Items

 

1350


Available Maximum Dimensions

Items

Length

Width/Dia.

Thickness

Saggar,

400mm

400mm

150mm

Setter Slab, Batts (Pusher,   Perforated, Grooved), Bar

1000mm

1000mm

40mm

Extruded Batts

1600mm

750mm

80mm

Props (Support)

1500mm

150mm

30mm

Crank, Cast Stools

800mm

460mm

80mm

Others

 By   Negotiation


Available Tolerance

Items

Pressed   Products

Extruded   Products

Flatness

±0.3%, min. ±0.5 mm

±0.3%, min. ±1.0 mm

Length & Width

±1.0%, min. ±1.0 mm

±0.5%, min. ±1.0 mm

Thickness

±5.0%, min. ±1.0 mm

±3.0%, min. ±1.0 mm

Linearity

N/A

±0.3%, min. ±1.0 mm



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