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    Metso Grate Kiln for DR pellets: process control insights for plant engineers

    March 26, 2026|

    Reviewed by Joe Ashwell

    First reported on International Mining – News

    30 Second Briefing

    Metso is promoting its Grate Kiln pelletising system as a benchmark for producing premium iron ore pellets tailored to direct reduction (DRI) and low‑carbon ironmaking routes. The plant configuration combines a travelling grate for green ball induration with a rotary kiln designed for uniform mixing and heating, improving pellet metallisation behaviour and mechanical strength in shaft and fluidised bed reactors. For process engineers, the key claim is tighter control of temperature profile and residence time, enabling more consistent pellet quality for gas‑based DR processes.

    Technical Brief

    • Metso positions the Grate Kiln as compatible with low‑carbon ironmaking routes using alternative reductants and fuels.
    • Commercial messaging emphasises support for steelmakers’ decarbonisation roadmaps rather than only throughput or capex metrics.

    Our Take

    Metso’s focus on Grate Kiln pellet quality for iron ore sits alongside its recent push into dry grinding VRM technology with Loesche, signalling a coordinated offering aimed at DR- and low-carbon steel value chains where ore preparation and pellet performance are tightly coupled.

    Across our mining coverage, Metso increasingly appears not just as an equipment vendor but as a process integrator, from solvent extraction–electrowinning at Florence Copper to Life Cycle Services contracts on pumps, which suggests Grate Kiln buyers can expect bundled performance and service models rather than standalone kit.

    Iron ore is one of the more frequently recurring commodities in our database, and tying high-quality DR-grade pellets to Metso’s broader process portfolio positions the company to benefit as steelmakers shift capacity from blast furnaces towards DRI–EAF routes that demand tighter pellet specifications.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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