SiC ceramic rollers & tubes for Lithium Battery kilns

High temperature RbSiC SiSiC ceramic Profiled supports

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Description

Silicon carbide kiln furniture is a critical consumable in the sintering process of lithium battery materials (especially cathode and anode materials), primarily including pusher plates, saggars, crucibles, supports, columns, and beams. Its performance directly affects the consistency, yield, and production cost of the materials.

II. Why the Lithium Battery Industry Chooses Silicon Carbide Kiln Furniture?

Key Requirement	Advantages of Silicon Carbide Kiln Furniture
High Purity Requirement	High-purity silicon carbide (SiC content ≥99%) prevents material contamination
High-Temperature Stability	Long-term resistance to 1300-1600°C (sintering temps typically 1100-1400°C for battery materials)
Thermal Shock Resistance	Suitable for rapid heating/cooling processes, reducing cracking (sintering cycles range from tens to hundreds of hours)
Chemical Inertness	Resists corrosion from active substances like lithium salts, acids, and bases
High Load-Bearing Strength	Maintains shape under multi-layer stacking, increasing loading capacity
Long Service Life	Life expectancy 3-10 times longer than traditional alumina kiln furniture

III. Main Product Types and Applications

1. Pusher Plates / Carrier Plates

Use: Used in pusher kilns to carry saggars through the kiln
Features:
- Precise dimensions: Ensure smooth transportation
- Flat surface: Prevent saggar tilting
- Thermal shock resistant: Withstands temperature differentials at kiln ends
Common Specifications: Length 1-2m, width 300-500mm, thickness 25-50mm

2. Saggars / Crucibles

Use: Directly contain cathode/anode material powders (e.g., LFP, NCM/NCA, LCO)
Features:
- Various designs: Square, round, with compartments
- Uniform wall thickness: Ensures consistent heat transfer
- Smooth inner walls: Facilitate unloading, reduce material sticking
Common Specifications: Customized based on loading capacity, typical volume 5-50L

3. Crucibles

Use: Sintering of small-batch, high-value-added materials (e.g., high-nickel ternary, solid-state electrolytes)
Features: Monolithic molding, better sealing

4. Kiln Structural Components

Columns, Beams, Supports: Used in roller hearth kilns, box furnaces for internal support structures