A kinetic comparison between microwave heating and conventional heating of FeS-CaO mixture during hydrogen-reduction

被引：30

作者：

Amini, Ahmadreza ^{[1
]}

Ohno, Ko-ichiro ^{[2
]}

Maeda, Takayuki ^{[2
]}

Kunitomo, Kazuya ^{[2
]}

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Mat Proc Engn, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka, Japan

[2] Kyushu Univ, Fac Engn, Dept Mat Sci & Engn, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka, Japan

来源：

CHEMICAL ENGINEERING JOURNAL | 2019年 / 374卷

关键词：

Hydrogen reduction; Microwave heating; Conventional heating; Lime; FeS; Kinetic analysis; LOW-TEMPERATURE REDUCTION; CARBOTHERMIC REDUCTION; IRON-OXIDES; CARBON; H-2; HEMATITE; BEHAVIOR; PARTICLES; PELLETS; WUSTITE;

D O I：

10.1016/j.cej.2019.05.226

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Kinetics of iron production via hydrogen-reduction of FeS-CaO mixture during both microwave heating and conventional heating was investigated at 750, 570, and 460 degrees C to clarify the effect of heating method on dominant rate-controlling mechanism. Results of conventional heating revealed that the rate controlling step during treatment in the first 500 s at 750 degrees C, 800 s at 570 degrees C, and 1000 s at 460 degrees C is interfacial chemical reaction; then it is changed to gas diffusion in micro pores of reduced Fe owing to the formation of Fe shell on the surface of FeS particles. In microwave treatment, the interfacial chemical reaction is rapidly progressed and gas diffusion is the dominant rate-controlling mechanism with an activation energy of 22.3 kJ.mol(-1). This study demonstrated that the microwave irradiation enhances the rate of chemical reaction during iron production from FeS-CaO mixture.

引用

页码：648 / 657

页数：10

共 39 条

[21] Kinetics of hydrogen reduction of magnetite ore fines [J].

Kuila, Saikat Kumar ;

Chatterjee, Ritayan ;

Ghosh, Dinabandhu .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2016, 41 (22) :9256-9266

[22] Recovery of lime, sulfur, and iron from gypsum and pyrite wastes [J].

Kutsovskaya, ML ;

Hepworth, MT ;

McGaa, JR .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (05) :1736-1746

[23] Kinetics of the reduction of wustite by hydrogen and carbon monoxide for the chemical looping production of hydrogen [J].

Liu, Wen ;

Lim, Jin Yang ;

Saucedo, Marco A. ;

Hayhurst, Allan N. ;

Scott, Stuart A. ;

Dennis, J. S. .

CHEMICAL ENGINEERING SCIENCE, 2014, 120 :149-166

[24] Effect of iron ore-coal pellets during reduction with hydrogen and carbon monoxide [J].

Man, Yi ;

Feng, Jun-xiao .

POWDER TECHNOLOGY, 2016, 301 :1213-1217

[25] Reduction Disintegration Behavior of Iron Ore Sinter under High H2 and H2O Conditions [J].

Murakami, Taichi ;

Kamiya, Yousuke ;

Kodaira, Takeyuki ;

Kasai, Eiki .

ISIJ INTERNATIONAL, 2012, 52 (08) :1447-1453

[26] Kinetics of Reduction Step of Wustite to Iron of Hematite and Quaternary Calcium Ferrite Mixtures [J].

Noguchi, Daisuke ;

Ohno, Ko-ichiro ;

Maeda, Takayuki ;

Nishioka, Kouki ;

Shimizu, Masakata .

ISIJ INTERNATIONAL, 2013, 53 (08) :1350-1357

[27] Effect of Coke Breeze Distribution on Coke Combustion Rate of the Quasi-particle [J].

Ogi, Hiroshi ;

Maeda, Takayuki ;

Ohno, Ko-ichiro ;

Kunitomo, Kazuya .

ISIJ INTERNATIONAL, 2015, 55 (12) :2550-2555

[28] The reduction kinetics of hematite particles in H2 and CO atmospheres [J].

Oh, Jeongseog ;

Noh, Dongsoon .

FUEL, 2017, 196 :144-153

[29] Reduction of molybdenite with carbon in the presence of lime [J].

Padilla, R ;

Ruiz, MC ;

Sohn, HY .

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 1997, 28 (02) :265-274

[30] Kinetics of reduction of iron oxides by H2 -: Part II.: Low temperature reduction of magnetite [J].

Pineau, A. ;

Kanari, N. ;

Gaballah, I. .

THERMOCHIMICA ACTA, 2007, 456 (02) :75-88

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