alumina Sagger

Changsha Zhongci New Material Technology Co., Ltd. is a professional manufacturer focused on thermal field consumables for lithium batteries, dedicated to supporting the high-temperature sintering and graphitization processes of lithium battery cathode and anode materials.
Our core product range includes mullite cordierite & corundum-mullite ceramic saggers (4 million units annual capacity), graphite saggers (600,000 units annual capacity), alumina-based industrial ceramics (cement resistor shells, alumina rods, 2,000 tons annual capacity), and precision grinding media (1,000 tons annual capacity). Backed by proprietary compression molding technology, we deliver reliable, cost-effective consumables for high-temperature sintering, power transmission and powder grinding applications.
We partner with top domestic new energy leaders including Huayou Cobalt, Wanhua Chemical and Brunp Recycling

1. Lithium Iron Phosphate (LFP) Cathode Material Sintering

   Acts as the core container for LFP precursor sintering in roller hearth kilns and pusher kilns. Its good thermal conductivity and chemical inertness ensure uniform heating of cathode materials and avoid impurity contamination, effectively improving product consistency and production yield. It is the mainstream consumable for mass production of LFP battery materials.

2. Lithium Battery Anode Material Sintering & Carbonization

   Serves as a loading vessel for graphite anode carbonization and pre-sintering processes under inert atmosphere. It withstands long-term high-temperature carbonization environments without deformation or cracking, and adapts to various batch-type and continuous sintering furnaces, supporting stable mass production of artificial graphite and natural graphite anodes.

3. Ternary Cathode & Other Battery Material Sintering

   Applicable to the sintering of NCM/NCA ternary cathode materials, lithium manganate and cobalt lithium under corresponding atmosphere conditions. Its corrosion resistance against active metal oxides effectively extends the service life of the sagger and reduces the frequency of kiln furniture replacement.

4. High-Temperature Sintering of Advanced Materials

   Widely used in the sintering and heat treatment of magnetic materials, electronic ceramics, rare earth materials, cemented carbide and powder metallurgy products under protective atmosphere. It provides a clean and stable high-temperature environment, and can be customized with special structures such as partitions and corner protectors according to process requirements.

   • Material stability: High-purity mullite matrix with low impurity content, no contamination to sintered products, suitable for battery-grade and high-precision material production

   • Performance advantage: Excellent thermal shock resistance, no cracking under rapid temperature changes; high high-temperature load strength, supporting heavy material stacking for mass production

   • Cost efficiency: 2–3 times longer service life than ordinary cordierite saggers, with lower unit consumption cost per sintering batch

   • Flexible customization: Full customization of size, shape, wall thickness and material formula to match different kiln types and sintering processes

   • Stable supply: Large-scale production base with monthly output of thousands of units, supporting bulk container orders and long-term fixed supply

   • Full-cycle service: Matching waste sagger recycling solution to help customers achieve closed-loop resource utilization and reduce solid waste disposal pressure