Review on the Oxidation Behaviors and Kinetics of Magnetite in Particle Scale

被引：36

作者：

Zheng, Heng ^{[1
]}

Schenk, Johannes ^{[1
]}

Spreitzer, Daniel ^{[1
]}

Wolfinger, Thomas ^{[2
]}

Daghagheleh, Oday ^{[1
]}

机构：

[1] Univ Leoben, Chair Ferrous Met, Franz Josef Str 18, A-8700 Leoben, Austria

[2] KI MET GmbH, Low Carbon Energy Syst, Area 3, Stahlstr 14, A-4020 Linz, Austria

来源：

STEEL RESEARCH INTERNATIONAL | 2021年 / 92卷 / 08期

关键词：

magnetite; oxidation behaviors; oxidation kinetics; DIRECT REDUCTION; THERMAL-ANALYSIS; PHASE-CHANGE; IRON-ORES; MECHANISMS; PELLETS; SIZE;

D O I：

10.1002/srin.202000687

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

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.

引用

页数：13

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