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 rec...