Kinetics of Carbothermic Reduction of Molybdenite in the Presence of Magnesium Oxide

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BIRANVAND KHADIJEH; ABBASI MOHAMMAD HASAN; SAIDI ALI

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Journal: Journal of Advanced Processes in Materials Engineering Year:2020 | Volume:14 | Issue:2 Page(s): 27-37

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Title

Kinetics of Carbothermic Reduction of Molybdenite in the Presence of Magnesium Oxide

Author(s)

BIRANVAND KHADIJEH | ABBASI MOHAMMAD HASAN | SAIDI ALI | Issue Writer Certificate

Keywords

KineticsQ2

Carbothermic ReductionQ1

MolybdeniteQ2

Magnesium OxideQ1

Abstract

In this research, the Kinetics of Carbothermic Reduction of Molybdenite in the presence of Magnesium Oxide was studied. Powder samples with a stoichiometric ratio (Molybdenite: Magnesium Oxide: Graphite 1: 2: 2) prepared under simultaneous thermal analysis (STA), with three heating rates of 10, 15 and 20 degrees per minute, respectively. A series of experiments were performed under isothermal argon atmosphere, to determine the intermediate phases formed during the process. The results showed that the process temperature range was 900 º C to 1400 º C and with the formation of intermediate phases of molybdenum oxide (MoO2) and magnesium molybdate (MgMoO4) goes. Kinetic investigations were done with the free model methods such as Friedman, Ozawa and Kissinger as well as model fitting method Coats-Redfern. The results of all methods were in good agreement with each other and suggested that the mechanism of the reaction was chemical control and activation energy was about 425 KJ/mol.

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APA: Copy

BIRANVAND, KHADIJEH, ABBASI, MOHAMMAD HASAN, & SAIDI, ALI. (2020). Kinetics of Carbothermic Reduction of Molybdenite in the Presence of Magnesium Oxide. ADVANCED PROCESSES IN MATERIALS, 14(2 ), 27-37. SID. https://sid.ir/paper/379135/en

Vancouver: Copy

BIRANVAND KHADIJEH, ABBASI MOHAMMAD HASAN, SAIDI ALI. Kinetics of Carbothermic Reduction of Molybdenite in the Presence of Magnesium Oxide. ADVANCED PROCESSES IN MATERIALS[Internet]. 2020;14(2 ):27-37. Available from: https://sid.ir/paper/379135/en

IEEE: Copy

KHADIJEH BIRANVAND, MOHAMMAD HASAN ABBASI, and ALI SAIDI, “Kinetics of Carbothermic Reduction of Molybdenite in the Presence of Magnesium Oxide,” ADVANCED PROCESSES IN MATERIALS, vol. 14, no. 2 , pp. 27–37, 2020, [Online]. Available: https://sid.ir/paper/379135/en

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