Secondary copper blast furnace slag was treated with carbon to derive the conditions for maximum recovery of copper with minimum simultaneous reduction of iron oxide. Experiments were carried out to study the effects of parameters such as temperature, carbon addition and CaO addition to the slag on the efficient recovery of copper. A two-stage reduction process was also employed to study the efficiency of copper recovery. The results were compared with those of single-stage reduction. The maximum recovery of copper in alloy phase was obtained with 5% (by weight) initial carbon in the feed, 2% (by weight) CaO addition to the slag and a reducing temperature of 1573 K. A higher grade of the alloy phase with respect to copper was obtained by employing a two-stage reduction process. The results obtained in this study are comparable to those of the earlier research on the recovery of copper from reverberatory furnace discard slags.