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<p>High phosphorous iron ore (<i>P</i> &gt; 0.1%) is unsuitable for ironmaking as it increases phosphorous in hot metal and raises the steelmaking cost. This study examines Indian ore containing 55.40% Fe and 0.56% P for beneficiation. Reduction roasting with carbon, blast furnace gas and hydrogen was followed by magnetic separation to evaluate phosphorous removal. Characterization of the reduced samples showed that hydrogen reduction produced the maximum magnetite content in the reduced iron ore which enhanced the separation efficiency and low intensity magnetic separation proved most effective for treating the reduced iron ore. The combined process achieved 80.35% dephosphorization, lowering phosphorous from 0.56 wt% to 0.11 wt%. This approach provides sustainable and efficient method for reduction roasting and beneficiation of high phosphorous iron ore.</p> Graphical Abstract <p></p>

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Method for Removal of Phosphorous Content in Iron Ore via Green Reduction Roasting and Magnetic Separation

  • 期刊论文

  • 发表日期：

    2025年10月29日

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  • Akhil Singh,
  • Ravu Ravi Teja,
  • Navneet Kumar Mishra,
  • Veerendra Singh,
  • Manas Kumar Mahanta,
  • Sudipta Patra,
  • Asim Kumar Mukherjee

摘要

High phosphorous iron ore (P > 0.1%) is unsuitable for ironmaking as it increases phosphorous in hot metal and raises the steelmaking cost. This study examines Indian ore containing 55.40% Fe and 0.56% P for beneficiation. Reduction roasting with carbon, blast furnace gas and hydrogen was followed by magnetic separation to evaluate phosphorous removal. Characterization of the reduced samples showed that hydrogen reduction produced the maximum magnetite content in the reduced iron ore which enhanced the separation efficiency and low intensity magnetic separation proved most effective for treating the reduced iron ore. The combined process achieved 80.35% dephosphorization, lowering phosphorous from 0.56 wt% to 0.11 wt%. This approach provides sustainable and efficient method for reduction roasting and beneficiation of high phosphorous iron ore.

Graphical Abstract