Thermodynamic Study on the Sulfidation-Magnetic Roasting of the Hematite Type of Tin-Bearing Iron Ore

Abstract:

Sulfidation-magnetic roasting process was used to treat tin-bearing iron ore of hematite to recovery iron resources. The results of thermodynamics analysis of the roasting reaction trait showed that, when CO concentration was lower than 11.43% at temperature higher than 873K, SnO2 and Fe2O3 could be selectively reduced to SnO and Fe3O4, respectively. FeS2 would be decomposed into FeS and S2 during the roasting process, and the S2 sulfidation effect was stronger than FeS. After roasting, the main iron phase of the minerals was changed into magnetite from hematite and then the iron could be recovered through the magnetic separation. This method provides a new method for the recovery of iron from tin-bearing iron ore of hematite.

• Periodical: Applied Mechanics and Materials (Volume 472)
• Pages: 596-602
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.472.596
• Online since: January 2014
• Authors: Bin Liao, Lei LI, Hua Wang, Xiu Li Sang
• Keywords: Hematite, Resources Recovery, Sulfidation-Magnetic Roasting, Tin-Bearing Iron Ore

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