Abstract
Secondary copper industry has received more and more attention due to its high Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) emissions. Best available technologies (BAT) plays an important role in prevention of PCDD/Fs pollution for secondary copper industry and is recommended by the Stockholm Convention on POPs. In this study, AHP-Delphi method-fuzzy comprehensive evaluation method is used to evaluate the 5 smelting technologies that are usually applied in secondary copper industry. The result shows that the Kaldo smelting technology and Ausmelt/ISA smelting technology rank top because of its superior technical performance and good environmental benefits. Then, Kaldo furnace and bag filter were selected as a preliminary validation study on the feasibility of BAT. The results of PCDD/Fs analysis showed that the combination of Kaldo furnace and bag filter can meet the requirements of PCDD/Fs pollution prevention and should be recommended for the treatment of low grades copper scrap.
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