Cordierite kiln Furniture
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- | Cordierite- | Cordierite- | Cordierite- | Cordierite- | Cordierite- | Cordierite- | |
Chemical | 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 | ||||||||
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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