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Investigation of Na 2 CO 3 -assisted reduction of iron oxides: Corrosion mechanism of Na vapor medium

Powder Technology, ISSN: 0032-5910, Vol: 407, Page: 117694
2022
  • 7
    Citations
  • 0
    Usage
  • 6
    Captures
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  • Citations
    7
    • Citation Indexes
      5
    • Patent Family Citations
      2
      • Patent Families
        2
  • Captures
    6

Article Description

Na 2 CO 3 was proven to enhance the reduction of stubborn iron minerals, which decreased the melting point of refractory iron ores and promoted the aggregation of iron grains. Many studies have revealed that the thermal decomposition of Na 2 CO 3 easily proceeds in the sequence of Na 2 CO 3  → Na 2 O → Na. In this study, the effect of Na 2 CO 3 on the reduction of iron oxides was investigated. The results indicated that a CO-CO 2 atmosphere promoted the reduction of Na 2 CO 3, as well as the volatilization of Na. Then, Na(g) acted as an intermediate medium, which could easily reduce iron oxides, accompanied by mass transfer of Na and the formation of reducible sodium iron oxides.

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