The zinc plant in Kokkola started its operations in 1969 and its main products are pure zinc and zinc alloys. Since 2010 the smelter is also producing sulfuric acid. The majority of the zinc concentrate comes from Boliden’s own mines in Sweden and Ireland. About 85 per cent of the zinc produced at Kokkola is exported.
At Kokkola, as at the Odda zink smelter, the direct leaching method developed in Kokkola is used that makes it possible to process complex and less pure metal concentrates.
Boliden Kokkola is committed to continuously and systematically improving its operations and thereby working towards a sustainable development. As a result of this improvement programme, the company is today one of the most cost-efficient and modern zinc smelters in the world.
The zinc plant is the largest private employer in the Kokkola area with more than 500 employees.