The graphitization furnace is a core equipment developed by Hunan Jingtan Automation Equipment Co., Ltd. for high-temperature processing of advanced carbon materials such as lithium battery anode materials, carbon fibers, and carbon/carbon composites. During the graphitization process of anode materials, "excessive ash content" remains the most concerning quality issue—residual metallic impurities and non-carbon elements in the product can lead to reduced initial battery efficiency and shortened cycle life. Traditional graphitization furnaces typically reach a maximum temperature of around 2,500°C, which is insufficient to fully volatilize and remove stubborn impurities. In contrast, Hunan Jingtan's graphitization furnace employs induction heating technology, enabling operating temperatures up to 3,000°C. Under ultra-high-temperature vacuum or inert gas protection, impurity elements in carbon materials are thoroughly volatilized, resulting in high-purity graphite products. The thermal field design incorporates imported insulation materials and an advanced furnace chamber structure, ensuring uniform working temperatures and minimal heat loss, thereby guaranteeing consistent product performance across batches.
Another key technological advantage of Hunan Jingtan’s graphitization furnace is its "one power supply for multiple furnaces" configuration. A characteristic of the graphitization process is its long heating and cooling cycles. In traditional systems with "one furnace per power source," the power unit remains idle during cooling, resulting in utilization rates below 50%. Hunan Jingtan’s solution uses a single power supply to drive multiple furnace units, allowing the power to be used continuously and efficiently—while furnace A cools down, it simultaneously heats furnace B. This design not only reduces equipment investment but also significantly increases production capacity per unit system. In practice, users can flexibly adjust the number of simultaneously operating furnaces according to production demands, enabling elastic manufacturing between peak and off-peak seasons and avoiding the dilemma of either equipment idleness or insufficient capacity.
In terms of automation control, Hunan Jingtan leads the industry. The equipment features a digital intelligent temperature control system that automatically and precisely performs temperature measurement and regulation. The system can follow preset heating curves and store multiple different process profiles. For users frequently switching product models, this function greatly simplifies operations—operators simply select the appropriate process curve on the touch screen, and the equipment automatically executes the entire heating, holding, and cooling cycle without requiring constant supervision. A comprehensive PLC-based automatic control and protection system monitors equipment status in real time, triggering alarms and protective actions upon detecting anomalies, ensuring safe and reliable operation.
Hunan Jingtan’s graphitization furnaces are widely applied in high-end fields including new energy, aerospace, and semiconductors. The products are primarily used for sintering battery anode materials, carbon structural components, C/C composite parts, carbon fibers, carbon materials, carbon fiber ropes, high-temperature graphitization of flake graphite and other graphite materials, as well as for sintering and melting other materials suitable for carbon environments. With the rapid development of the new energy sector, demand for graphitization furnaces continues to grow. Leveraging a highly skilled technical team and continuous innovation capabilities, Hunan Jingtan provides end-to-end services—from equipment selection, installation, and commissioning to process optimization—supporting downstream industries in achieving domestic substitution of high-end carbon materials.
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