The Metso Grate Kiln system focuses on high-quality pellet production for Direct Reduction (DRI) and low-carbon steelmaking. It combines process control, energy efficiency, and digital solutions to improve pellet quality and operational performance while enabling alternative fuel usage.
Metso is reinforcing its position in iron ore pelletizing with its Grate Kiln system, designed to meet the increasing demand for high-quality pellets in Direct Reduction and low-carbon steelmaking processes.
The system utilizes rotary kiln technology to ensure uniform mixing and controlled heating, resulting in pellets with consistent physical and metallurgical properties. These include high cold crush strength, optimal porosity, low temperature degradation, and strong reducibility.
The design allows independent control of the grate, kiln, and cooler, enabling the processing of different ore types and the use of both conventional and alternative fuels such as biomass and hydrogen.
Focus on digitalization and efficiency
The Grate Kiln system integrates advanced combustion technologies, heat recovery solutions, and digital tools to enhance plant performance. Key benefits include:
- Reduction in energy consumption by several percentage points
- More than 10% improvement in pellet quality
Digital solutions further improve process stability and operational reliability.
Proven technology with global scale
As the original developer of the Grate Kiln induration process, Metso brings over 65 years of experience. The company has installed more than 55 systems worldwide, with a combined annual capacity exceeding 150 million tons.
This installed base positions the Grate Kiln system as a reliable solution for both Direct Reduction and traditional blast furnace operations.
