Boliden Kokkola inaugurates new silver recovery plant
december 10th, 2014
Silver recovery Kokkola, Risto Alapiha. Photo: Päivi Karjalainen
Today is the official start of the new silver recovery plant at Boliden’s zinc smelter Kokkola in Finland. The USD 33.2 million-investment will result in a production of 25 tons of silver annually.
In April of 2012 Boliden launched a project for extracting silver from zinc concentrates, the background being higher contents of silver in concentrates including the feed from the recent expanded zinc silver mine Boliden Garpenberg. The new plant will produce silver concentrate, an intermediate product, which will be sold to silver refineries. The amount of silver in concentrate will be approximately 25 tons annually.
- This new process is of great importance for Boliden Kokkola since it will improve both profitability and raw material efficiency. Silver concentrate will now be one of Boliden Kokkola’s most valuable by-products, says Jarmo Herronen, General Manager at Boliden Kokkola.
About Boliden Kokkola
With its annual production capacity of 315 000 tons Boliden Kokkola is the second largest zinc smelter in Europe with pure zinc and zinc alloys as main products. Boliden Kokkola was the first smelter in the world to introduce the direct leaching process for concentrates. The majority of the zinc produced in Kokkola is sold to the European steel industry and is later used within the automotive and construction industries. Half of the global silver production is used in electrical and electronics industries, other users include photographic and jewellery industries.