Experimental studies in laboratory-scale equipment have been carried out to study the vaporization from dust generated during the copper converting process. In the present work the vaporization of Zn, Pb, As, Sb, and Bi from a dust collected in the electrostatic precipitator after the copper converter were studied. The results show that Pb, Bi and As were vaporized to a high degree from the dust at a temperature above 900 °C in a gas containing N2, SO2 and a small amount of H2. The vaporization was high for these elements also in a gas containing N2, SO2 and O2 at temperatures above 1120 °C. In an earlier study, thermodynamic calculations showed that it is possible to selectively condense metals at high temperature in a gas atmosphere generated during a copper converting process. The present study was carried out to verify the thermodynamic model. The results indicate that it should be possible for a selective condensation of Zn at high temperature. The temperature required for a selective condensation of Zn is dependent upon the gas atmosphere, e.g., the oxygen potential