Boliden Boosts Zinc Output with Odda Smelter Expansion in Norway

Boliden completes zinc smelter upgrade in Odda, Norway, boosting capacity to 350,000 t/yr and reducing waste.
Boliden

Expansion lifts Odda capacity by 75%, reinforcing Boliden’s position in Europe’s zinc market

Swedish mining giant Boliden has completed a major expansion at its Odda zinc smelter in Norway, aiming to boost its zinc output by 75%. This strategic move positions Odda as Europe’s second-largest zinc smelter with a new annual capacity of 350,000 tonnes, up from 200,000 tonnes.

The revamped facility includes a new roasting furnace, a modern sulphuric acid plant, a new tankhouse, and upgraded leaching and purification systems. Boliden emphasized that the enhanced process will extract more metal from each tonne of raw material, thereby reducing waste and improving sustainability.

Despite producing 151,497 tonnes of zinc in 2024—a 7.7% drop from 2023—Boliden attributed the decline to limited electrolysis capacity during the construction phase. Now fully operational, the Odda site is expected to run at full capacity, contributing significantly to Europe’s zinc supply.

This expansion underscores Boliden’s long-term commitment to modernizing critical metal infrastructure while aligning with sustainability goals across the European mining sector.

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