Thermodynamic Analysis of Separating Synchronously Copper and Iron Components from Copper Smelting Slags

The occurrence state changes and the possibility of synchronous separation of the components with copper and iron were researched by detailed calculation and derived, from the thermodynamics point of view in the oxidation modification process of copper smelting slag. The relationship between oxygen and sulfur potential of coexistence stage for metallic copper and the magnetite was concluded by analyzed the advantage area chart of Cu-Fe-S-O system. The Thermodynamic studies show that, there was a stability range of the oxygen and sulfur potential in Cu-Fe-S-O system, which made the metallic copper and the magnetite coexistence. The research will provide theoretical support for the synchronous separation between copper and iron components from copper smelting slag.