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Upgrading of. Ilmenite and Titan magnetite concentrates of Kahnooj ore by Slag-making route was investigated. The effects of the process parameters and pre-oxidation of the starting materials on the formation of slag, separation of slag from pig iron and distribution of elements have been studied. The results revealed that the time and temperature of reducing and melting steps, along with the type and amount of flux are the most important parameters of the process and have a significant effect on the characteristics of the products. For instance in the presence
of 5 wt% of dolomite, the quantity of vanadium oxide in slag decreased on increasing the time and temperature of melting steps. The results also indicate that the pre-oxidation of the concentrates has no considerable effect on the process.