Carbothermic Reduction of Zinc Ferrite by Microwave Heating

被引：9

作者：

Wang, Xin ^{[1
,2
,3
]}

Ju, Shao-Hua ^{[1
,2
,3
]}

Srinivasakannan, C. ^{[4
]}

Yang, Da-Jin ^{[5
]}

Peng, Jin-Hui ^{[1
,2
,3
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China

[2] Kunming Univ Sci & Technol, Minist Educ, Key Lab Unconvent Met, Kunming 650093, Yunnan, Peoples R China

[3] Engn Lab Microwave Applicat & Equipment Technol, Kunming 650093, Yunnan, Peoples R China

[4] Petr Inst, Chem Engn Program, Abu Dhabi, U Arab Emirates

[5] Kunming Met Res Inst, Kunming 650093, Yunnan, Peoples R China

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2013年 / 32卷 / 05期

关键词：

kinetics; thermodynamics; zinc ferrite; activation energy; HSC chemistry software 6.0; microwave; ACID-MEDIA; KINETICS; BEHAVIOR; CARBON;

D O I：

10.1515/htmp-2012-0170

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The kinetics of carbothermic reduction of ZnFe2O4 in the temperature range 823-1223 K, was investigated in a microwave reactor. The mechanism of formation of ZnO and Fe3O4/FeO by decomposition of ZnFe2O4 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/ZnFe2O4 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/ZnFe2O4 ratio of 1:3, particle size of +74-61 mu m 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.

引用

页码：485 / 491

页数：7

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