Abstract:In order to enhance the recovery of copper from copper slag, a reductant for strengthening copper slag dilution was designed. The reaction of copper matte recovery from smelting slag with novel-style reductant and commonly used dilution agents such as anthracite and pyrite was calculated and compared by HSC 6.0 thermodynamic software. The smelting slag of a smelter was used as raw material to test and verify the strengthening effect of novel-style dilution agent. The thermodynamic calculation results demonstrate that the novel-style reductant exhibits superior effectiveness on reducing copper slag (the main components of Fe2SiO4 and Fe3O4) is better than that of anthracite and pyrite. Experimental results show that the recovery rates of copper are 30.83%, 52.50% and 66.67%, respectively, when anthracite, pyrite and novel-style reductant are used to reduce copper in slag alone. The novel-style reductant can significantly strengthen copper recovery from slag, and it is expected to provide reference for the efficient dilution of copper slag and improve the utilization rate of traditional fossil energy such as anthracite.