Battery Pusher Kiln Technology – costefficient, highest throughput and outstanding quality

The worldwide strong growth in mobility with electric vehicles demands enormous capacities of lithiumion batteries. At the same time, car manufacturers and suppliers are forced to further extreme cost reductions. With the next generation of battery pusher kilns, Onejoons opens the door to the future of cathode production: with significantly increased throughput, considerably reduced manufacturing costs and a minimum use of special gases.

The Onejoon experts rely on a well-proven, reliable technology: the battery pusher kiln, which has clear advantages compared to the roller kilns commonly used today.

„The production capacity of common roller kilns used for cathode production is limited to around 1.5 kT per year; any expansion of the kiln systems and thus their production capacity is not possible without taking the risk of quality losses,“ explains Dr. Arian Esfehanian, Expert for CAM kiln systems at Onejoon. „In contrast, the Onejoon battery pusher kiln enables three to four times the production capacity with an identical use of space“.

Battery Pusher Kiln for highest efficiency in battery cathode production

In addition to costs and production capacity in the smallest possible space, product quality is also one of the success factors for cathode powder manufacturers.

After all, at the same price, battery manufacturers naturally prefer materials with a higher energy density, for example. This can be achieved by the best possible use of thermodynamic influences on the calcination and sintering processes.

In the Onejoon Battery Pusher Kiln, the processes can be significantly optimized at the necessary temperatures of up to 800 °C through optimal, permanent heat supply, reliable removal of exhaust gases in the calcination process and remarkable temperature homogeneity in the sintering process.

In all these aspects, the Battery Pusher Kiln provides clear conceptual advantages. While in the roller kiln heat can only be supplied from above and below, in the Onejoon solution heat is also supplied vertically from the sides.

In combination with the pusher conveyor technology, considerably higher and heavier superstructures and product carriers (saggars) can be passed through the kiln and much more cathode material can be produced. The product is heated homogeneously in each saggar with only minimal temperature deviations (+/- 2 °C), the calcination reactions start without time delay. The plant operator benefits from extremely homogeneous heat treatment with very high throughput and best product quality.

Further benefits include savings in process gases, energy and floor space. In conventional heat treatment plants, large quantities of special gases such as oxygen are consumed, although from a chemical point of view only a small part of them is really needed. Due to innovation and effective use of the gases, gas savings of up to 27 percent and energy savings of up to 25 percent are possible with the Onejoon Battery Pusher Kiln. The vertical design with higher superstructures allows the optimum use of every square meter of floor space.