Outotec has been awarded a contract for the supply of a new zinc roaster with gas cleaning and sulphuric acid plant for OZK Kardzhali, the second biggest zinc smelter in Bulgaria. The contract value is approximately €25 million. Outotec’s scope of delivery covers engineering and supply of the roasting, gas cleaning and acid technology as well as supervision services for the erection and commissioning of the plant. The mechanical completion of the project is scheduled for mid 2009.  

The new zinc roaster is part of OZK Kardzhali’s €68 million investment program, which will double the production of high-grade zinc by 2009. The roaster train supplied by Outotec will replace the existing 50-year-old roasters of Russian design. Outotec’s process not only increases the efficiency but also improves the energy recovery and environmental conditions of the smelter by reducing dust and sulfur dioxide gas emissions.