Mullite Sagger Solutions for Lithium Battery Cathode Sintering and High-Temperature Industrial Applications
2026/06/30
Advanced Mullite Sagger Solutions Driving the Global New Energy Battery Industry
Changsha Zhongci New Material Technology Co., Ltd., a leading manufacturer of high-temperature kiln furniture consumables, announces its comprehensive range of Mullite Sagger solutions engineered specifically for lithium battery cathode material sintering and industrial high-temperature applications. With an annual production capacity exceeding 4 million ceramic sagger units and partnerships with top-tier global battery material producers, the company is positioned as a key supplier in the rapidly expanding new energy supply chain.
Critical Role of Mullite Saggers in Battery ManufacturingMullite saggers serve as essential kiln furniture in the production of lithium battery cathode materials. These high-purity ceramic containers protect sensitive cathode powders from contamination during high-temperature sintering processes, ensuring consistent product quality and maximizing manufacturing yields.
Comprehensive Product Portfolio for Diverse Battery ChemistriesThe company's Mullite Sagger series covers the full spectrum of battery cathode material systems:
| Material System | Application | Sintering Temperature |
|---|---|---|
| NCM 523/622/811 | High-nickel ternary cathode sintering | 900-1000°C |
| NCM 111 | Standard ternary cathode material | 900-1000°C |
| LFP (Lithium Iron Phosphate) | Energy storage & EV battery cathode | 700-800°C |
| LCO (Lithium Cobalt Oxide) | Consumer electronics battery | 900-1000°C |
| LMO (Lithium Manganate) | Power tools & e-bike batteries | 800-900°C |
| LMFP (Lithium Manganese Iron Phosphate) | Next-gen high-voltage cathode | 700-800°C |
| Sodium-Ion Battery Materials | Layered oxide & polyanion cathode | 800-950°C |
| Precursor Calcination | Ternary & LFP precursor pre-treatment | 400-700°C |
Our Mullite Saggers are manufactured using advanced compression molding and high-temperature sintering technology, delivering exceptional performance:
- Excellent Corrosion Resistance: Engineered to resist alkaline powder erosion from cathode materials including ternary NCM/NCA, LCO, LFP, and LMO systems, significantly extending service life.
- Superior Thermal Shock Resistance: Stable structural integrity through rapid heating and cooling cycles in roller kilns, pusher kilns, and shuttle kilns - no deformation or cracking.
- Low Contamination: Ultra-low magnetic substance content and smooth surface finish ensure zero contamination of high-purity cathode powders.
- Customizable Specifications: Standard dimensions from 320x320mm to 340x340mm with heights of 60-160mm, fully customizable to customer drawings and automated equipment requirements.
| Parameter | Cordierite-Mullite | Corundum-Mullite |
|---|---|---|
| SiO2 (%) | 18-29 | 1-4 |
| Al2O3 (%) | 55-65 | 80-90 |
| MgO (%) | 5.5-12 | 1-5 |
| Porosity (%) | 21.5-26.5 | 4-5 |
| Flexural Strength (MPa) | 8-10 | 12-15 |
| Bulk Density (g/cm3) | 2.3-2.5 | 3.0-3.1 |
| Max Service Temperature | 1580-1770°C | 1650-1750°C |
In addition to lithium battery cathode material sintering, our Mullite Saggers are widely adopted across diverse high-temperature industrial sectors:
- Magnetic Materials: Sintering of strontium/barium ferrite permanent magnets and manganese-zinc soft ferrites.
- Electronic Ceramics: MLCC capacitor firing, alumina substrate sintering, and piezoelectric ceramic co-firing.
- Rare Earth Materials: Calcination of rare earth oxides and phosphor powders.
- Powder Metallurgy: Sintering of cemented carbide and ceramic-metal composite powders.
- Anode Material Processing: Pre-carbonization of graphite anode materials for lithium batteries.
With ISO9001 certified manufacturing facilities spanning 68,000 square meters and a workforce of over 300 professionals, Changsha Zhongci has established strategic partnerships with leading global battery manufacturers including CTAL, BYD, and BASF Shanshan. In 2024, the company was recognized as "Best Quality Supplier" by Huayou Cobalt, underscoring its commitment to product excellence and supply reliability.
Our Mullite Sagger products are designed for compatibility with all major kiln types - continuous roller tunnel kilns, pusher kilns, and intermittent shuttle kilns - supporting both high-volume automated production and small-batch specialty firing.
