Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2012, Vol. 33 ›› Issue (11): 1633-1636.DOI: -

• OriginalPaper • Previous Articles     Next Articles

Mechanism analysis on deep reduction of complex refractory iron ore promoted by Na2CO3

Han, Yue-Xin (1); Zhang, Cheng-Wen (2); Sun, Yong-Sheng (1); Gao, Peng (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; (2) Metso Mining-China, Beijing 100022, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-01-25
  • Contact: Han, Y.-X.
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Abstract: Effect of Na2CO3 on deep reduction of antelope iron was studied under the temperature of 1200°C and duration of 40 min. Characteristics of solid-state in deep reduction was analyzed by thermodynamic analysis. Complex iron compound such as fayalite and hercynite that was generated during deep reduction is one of the primary factors that affect metallization rate and the index of iron powder. According to analysis, FeO is replaced from complex iron compound by Na2O, which is decomposed from Na2CO3. At the same time, because of reactions between SiO2, and Al2O3, the amount of SiO2 and Al2O3 that may react with FeO is effectively reduced, thus improving the metallization rate and the index of iron powder.

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