Review on the Oxidation Behaviors and Kinetics of Magnetite in Particle Scale,Steel Research International

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Review on the Oxidation Behaviors and Kinetics of Magnetite in Particle Scale
Steel Research International ( IF 1.9 ) Pub Date : 2021-04-21 , DOI: 10.1002/srin.202000687
Heng Zheng ₁ , Johannes Schenk ₁ , Daniel Spreitzer ₁ , Thomas Wolfinger ₂ , Oday Daghagheleh ₁

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One possible route for ironmaking process is using a hydrogen-gas-based fluidized bed to produce direct reduced iron (DRI), which allows to use the natural magnetite directly in particle scale. The magnetite particles are oxidized during the preheating stage before being charged into the reduction unit. The exothermic effect, the crystal transformation, and the structural evolution during the oxidation of magnetite are introduced. The oxidation of magnetite is summarized in both thermodynamics and kinetics aspects. Furthermore, the influence of the oxidation of magnetite on its subsequent reduction behavior is examined.

中文翻译：

磁铁矿颗粒氧化行为及动力学研究进展

炼铁过程的一种可能途径是使用基于氢气的流化床生产直接还原铁 (DRI)，这允许直接使用颗粒级的天然磁铁矿。磁铁矿颗粒在进入还原单元之前的预热阶段被氧化。介绍了磁铁矿氧化过程中的放热效应、晶体转变和结构演变。从热力学和动力学两个方面总结了磁铁矿的氧化。此外，还检查了磁铁矿氧化对其后续还原行为的影响。

更新日期：2021-04-21

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