Riedhammer GmbH (established 1924, Nuremberg, Germany) supplies roller hearth and rotary kilns, handling systems and recycling lines for lithium‑ion battery materials and technical ceramics, focusing on atmosphere control, efficiency and emissions.
Riedhammer GmbH, founded in 1924 by engineer Ludwig Riedhammer, is a German manufacturer of industrial kiln plants and thermal processing systems based in Nuremberg, Germany. The company designs, builds and services roller hearth kilns, rotary kilns and complete handling systems for ceramics, carbon materials and lithium‑ion battery material production and recycling. Integrated into the Sacmi Group, Riedhammer emphasizes reliable high‑temperature processing, process control and plant modernization to improve energy efficiency, reduce emissions and support material recovery.
Riedhammer’s core technology centers on gas‑tight roller hearth kilns and rotary kilns engineered for precise atmosphere and temperature control across calcination, sintering, pyrolysis and baking processes. Roller hearth furnaces (multi‑tray, long travel lengths) deliver uniform thermal profiles for cathode and anode active materials; direct and indirect rotary kilns enable powder calcination without saggers. Supporting technologies include controlled‑atmosphere systems (oxygen, hydrogen, inert gases), spray‑drying, automated handling, pilot plants and remote process monitoring. Recent developments include a hydrogen‑capable high‑temperature kiln and integrated energy‑management and emissions‑reduction systems that lower fuel use and wastewater.
Riedhammer supplies roller hearth kilns, rotary kilns, sagger circulation and handling systems, spray‑dryers, pyrolysis/recycling lines and aftermarket services (inspection, spare parts, revamps, training). Products serve cathode/anode material production for EV batteries, technical ceramics, sanitaryware, tableware and refractory goods, offering controlled atmospheres, scalable layouts and improved energy efficiency.
In 2026 Riedhammer worked with Fraunhofer IKTS to develop a hydrogen‑firing ceramic kiln intended to reduce CO2 emissions while maintaining high‑temperature performance. Also in 2026 the company introduced a fast‑firing tunnel kiln for tableware with energy‑saving measures and atmosphere control. Both initiatives were demonstrated at industry events and targeted pilot and commercial installations to validate performance and emissions reductions.
Since 2003 Riedhammer has been substantially owned by Sacmi Group, which initially acquired a 30% stake and today holds a major share. The company operates as part of the Sacmi industrial group while maintaining independent manufacturing and product lines.
