Product details

Shijiazhuang, Hebei, China — May 18, 2026 — Shijiazhuang Hongtao Technology Co., Ltd., a leading microwave thermal processing manufacturer since 2010, has launched its continuous tunnel high-temperature microwave roller kiln specifically engineered for lithium battery electrode material production. The system drives carbonization of both positive and negative electrode materials and high-temperature calcination of lithium iron phosphate (LiFePO₄) cathode powders at temperatures reaching 1,300°C — two critical processes that directly determine electrochemical performance and crystal structure integrity.

The kiln's core advantage lies in microwave volumetric heating. Unlike conventional gas-fired roller kilns that rely on surface-to-core heat conduction, Hongtao's system uses electromagnetic energy to excite polar molecules throughout the entire material volume simultaneously. This eliminates thermal gradients that cause local under-firing or over-burning — persistent quality defects in traditional tunnel furnaces. Multi-zone independent temperature control, sealed nitrogen atmosphere for carbonization, and PLC touch-screen automation ensure batch-to-batch consistency demanded by battery-grade material producers.

Key performance metrics include temperature uniformity of ±6°C across the high-temperature zone, energy utilization exceeding 75%, and energy consumption reduced by over 40% versus conventional gas kilns and over 50% versus resistance heating furnaces. The product line covers 300KW tunnel-type LiFePO₄ sintering microwaves, high-temperature carbonization continuous pusher kilns, and dedicated lines for lithium cobalt manganese oxide and ternary cathode materials.

With the global lithium battery positive material roller kiln market projected to reach $1.12 billion by 2032 at a 9.6% CAGR, Hongtao's export-ready technology — already deployed in Korea, Japan, Singapore, and Kazakhstan — gives battery manufacturers a decisive competitive edge in throughput, quality, and carbon footprint reduction.