stanje i perspektive u rudarstvu i odrţivi razvoj mining present state ...

Rudarstvo 2011 / Mining 2011INTEGRAL APPROACH TO ENVIRONMENTAL IMPACTASSESSMENT FOR MINING AND METALLURGICALACTIVITIESŢeljko Kamberović 1 , Zvonimir Milijić 2 , Dragan Marinković 2 , Boban Todorović 2 , JasminkaŠerović 3 , Zoran Petrović 4 , Marija Korać 51 Faculty of Technolgy and Metallurgy, University of Belgrade, Belgrade, Serbia, 2 Rudarsko-topioniĉarskibasen Bor, , Bor, Serbia, 3 Tehnikum doo, Vrnjci, Serbia, 4 Ingeko doo, Kruševac, Serbia5 Innovation Center of the Faculty of Technolgy and Metallurgy in Belgrade, Belgrade, SerbiaAbstractsIn 2009, RTB Bor decided to modernize the existing smelter and acid plant in the RTB Bor Complex by replacingthe outdated smelting technology with a new technology known as autogenous Flash Smelting. Installation of thenew Sulphuric Acid and associated waste water treatment plant is also part of the modernization project.Environmental Impact Assessment is completed by EDC, Canada guidelines, which financed the majority of theProject. The environmental assessment included visits to the site and surrounding areas to view the site and toascertain the importance of environmental conditions or features, such as Geo-environmental investigations and anair quality dispersion modeling. The smelter modernization has the potential of having a very significant socialimpact on the Bor community and the surrounding district that serves as a positive contribution to the region and toSerbia.Key words: RTB Bor, copper, environmental assessment, air quality, pollutantsIntroductionRTB‘s Bor operations are located in the Town of Bor in eastern Serbia, approximately 240 km south eastof Belgrade. RTB Bor is an integrated copper mining complex, which is considered to be one of the mostimportant producers of copper and precious metals in Central Eastern Europe, with active productiondating back to 1903 [1]. A hundred years of mining and an outdated copper extraction technology(oxidation roasting-smelting in reverberatory furnace-converting), still present in the Bor Copper Smelter(TIR), left extensive environmental problems of polluted air, water and soil, not only for local communitybut for whole Balkan region and Danube basin [2].The modernization, as an inevitable step, will include a new Flash furnace smelting technology with adesign capacity of 400,000 tons/year concentrates [3]. The new smelter project will involve closure of theold FS roaster/Reverberatory furnace technologies and installation of new primary smelting by modernFlash furnace technology which will also require two PS converters operating for the defined capacity.The upgraded metallurgical complex will produce about 80,000 ton per year of fine copper. The selectionof flash smelting will mean more efficient use of concentrate energy that will allow for the reduction infossil fuel consumption, enable total collection of process off-gas for acid production, and willsignificantly improve overall copper recovery [4].The modernization will also incorporate the installationof a new modern gas collection for the Flash furnace and the operating converters, with process gasesfixed to sulphuric acid in a new modern sulphuric acid plant. Steam will be generated from waste heatrecovery in the new smelter and acid plant. It will be partly used to dry concentrates and heat refineryelectrolyte with the balance exported for local district heating and/or power generation. The existingoxygen plant serving the existing smelter will be expanded to meet the new facility needs.Flash furnaceand converter slags will be slow cooled, crushed, milled and then concentrated within an upgraded section445