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《Journal of University of Science and Technology Beijing》 2008-09
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Non-isothermal kinetics of the synthesis reaction of magnesium ferrite

LI Jing1,2),SHEN Ning1),WANG Qi1),CHEN Shujiang1)1) College of Materials Science and Engineering,University of Science and Technology Liaoning,Anshan 114000,China2) College of Chemical Engineering,Dalian University of Technology,Dalian 116000,China  
Magnesium ferrite is a kind of main bonding phase in magnesia refractory materials.Using the powder mixture of active magnesia and chemical reagent Fe2O3 as starting raw materials,DSC experiments of the synthesis reaction of magnesium ferrite were conducted respectively at scanning rates of 10,15,20 K·min-1 in static air.The kinetic parameters of the synthesis reaction of magnesium ferrite were calculated by the Kissinger equation,the Flynn-Wall-Ozawa equation and the Achar-Brindley-Sharp-Wendworth equation.The results show that the formation mechanism of magnesium ferrite obeys the random nucleation and rapid growth model,and the activation energy of the reaction is between 626.83 and 652.60 kJ·mol-1.
【Fund】: 国家自然科学基金资助项目(No.50774044);; 辽宁省自然科学基金资助项目(No.20072210)
【CateGory Index】: TB321
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