Metso Opens Circored™ Pre-Reduction Pilot Plant in Frankfurt

Metso has inaugurated its Circored™ pre-reduction pilot plant in Frankfurt. The investment reflects Metso’s commitment to advancing low-carbon technologies and supporting the global transition to fossil-free steelmaking.

© Metso

The Circored™ pilot plant, which is based on Metso’s proprietary technology, enables continuous pre-reduction using hydrogen as the sole reducing agent. It integrates pre-heating, reduction, gas cleaning, and recirculation systems for hydrogen and dust, and features electric heaters to support nearly zero-carbon operation.

“This pilot plant is a significant step in demonstrating the readiness of the Circored™ technology,” says Parizat Pandey, Director, Direct Reduced Iron (DRI) at Metso. “It allows us to validate process parameters and support our customers in their transition to low-carbon steelmaking”.

In the Circored pilot plant, a wide range of iron ore types can be tested, providing process data for engineering future commercial-scale plants. It also helps define the operating window for different ore qualities.

About Metso
Metso is a frontrunner in sustainable technologies, end-to-end solutions and services for the aggregates, minerals processing and metals refining industries globally. We improve our customers’ energy and water efficiency, increase their productivity, and reduce environmental risks with our product and service expertise. We are the partner for positive change.
Metso is headquartered in Espoo, Finland. At the end of 2024 Metso had close to 17,000 employees in around 50 countries, and sales in 2024 were about EUR 4.9 billion. Metso is listed on the Nasdaq Helsinki.

To view the full press release, please visit: https://www.metso.com/corporate/media/news/2025/9/metso-opens-circored-pre-reduction-pilot-plant-in-frankfurt-germany/