DataVXhtmpPaper
journal article·2013-10-25Open access

Carbothermic Reduction of Zinc Ferrite by Microwave Heating

Xin Wang, Shao-Hua Ju, C. Srinivasakannan, Da-Jin Yang, Jin-Hui Peng

htmp· Volume 32· Issue 5
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Source abstract

Abstract

Abstract The kinetics of carbothermic reduction of ZnFe 2 O 4 in the temperature range 823–1223 K, was investigated in a microwave reactor. The mechanism of formation of ZnO and Fe 3 O 4 /FeO by decomposition of ZnFe 2 O 4 was explained using the equilibrium calculations and thermodynamics analysis using HSC chemistry software 6.0. In addition the effect of parameters such as the decomposition temperature, C/ZnFe 2 O 4 ratio, particle size and microwave power were assessed on the decomposition kinetics. Zn recovery as high as 98.83% could be achieved at a decomposition temperature of 1023 K, C/ZnFe 2 O 4 ratio of 1:3, particle size of +74–61 µm and microwave power of 1200 W. The kinetics of decomposition was found to be carbon gasification reaction controlled, with the activation energy of 39.21 kJ/mol.
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Research context

OpenAlex topics: Metal Extraction and Bioleaching · Catalysis and Hydrodesulfurization Studies · Magnetic Properties and Synthesis of Ferrites

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Affiliations

Kunming University of Science and Technology, Faculty of Metallurgy and Energy Engineering, Kunming, Yunnan 650093, China

Key Laboratory of Unconventional Metallurgy, Ministry of Education. (Kunming University of Science and Technology), Kunming, Yunnan 650093, China

Engineering Laboratory of Microwave Application and Equipment Technology, Kunming, Yunnan 650093, China

Chemical Engineering Program, The Petroleum Institute, P.O. Box 2533, Abu Dhabi, UAE

Kunming Metallurgy Research Institute, Kunming, Yunnan 650093, China

References

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