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Contributing to the circular economy

Boliden is opening a leaching plant at Rönnskär using a technology developed to extract metal from our own residual materials. This will also reduce the amount of waste deposited in the Rönnskär underground repository by 80%. By investing in a leaching plant and the underground repository, Boliden is shouldering its responsibility for waste handling and recycling in the best way.

THE LEACHING PLANT – MORE METALS, LESS WASTE

Large volumes of residual material from production that still contain valuable metals are stored at the Boliden Rönnskär site. Boliden has long wanted to find a way to extract more metal from residual materials while reducing the amount that has to be deposited as waste. The new leaching plant was developed specifically to handle Rönnskär’s residual materials. Lead sulfate and copper/zinc sulfate can be extracted during the process. Furthermore, the total amount of waste for disposal is reduced considerably.

Facts and FAQs

Video of the leaching plant
Animated illustration of the leaching plant

 

UNDERGROUND REPOSITORY – UNIQUE FACILITY BELOW THE SMELTER

Boliden Rönnskär is building a deep underground repository for process waste In the bedrock 330 meters below the plant site in Skelleftehamn. The location of the underground repository was chosen for the bedrock’s properties, and to minimize transportation. Nowhere else in the world is such a deep repository located so close to a smelter. The first tunnel was begun back in May 2015, and the underground repository now entering service consists of a 3 km long ramp and eight storage rooms accessed via a connecting corridor.

Facts and FAQs

Video of the underground repository
Animated illustration of the underground repository

Contact

Boliden Head Office

Boliden Group
Klarabergsviadukten 90
P.O. Box 44, SE-101 20 Stockholm 
Tel: + 46 8 610 15 00
Fax: + 46 8 654 80 90