Recovery of Cu-Fe Alloy from Copper Smelting Slag

Copper smelting slag usually contains 1–6 wt% copper, which can be recovered by pyrometallurgical and flotation processes. However, the tailing slags still consist of 0.3–0.7 Cu 35–45 Fe equivalents to those in copper iron ores, respectively. Most research was focused on recovery from slags. increase mechanical strength, corrosion resistance antibacterial property some steels. A new process recover directly fully hot is proposed produce Cu-Fe alloy for steel production. Effects flux, temperature, reaction time, reductant type addition were investigated high-temperature experiments thermodynamic calculations. It found that, with 5% CaO 13–16% carbon additions, most at 1350–1400 °C. The contents reduced are lower than 0.1% 0.5%, respectively, optimum condition. has advantages low energy consumption, flux high iron.