An investigation on aluminothermic reduction of MoO3 in domestic microwave oven
In the present study, feasibility of aluminothermic reduction of molybdenum oxide by microwave oven was studied. Furthermore, the effect of compaction pressure and the amount of used Al and CaO as flux on aluminothermic reduction of molybdenum oxide were investigated. Thermodynamic analysis of the c...
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University of Belgrade, Technical Faculty, Bor
2020-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000025S.pdf |
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| author | Sheybani K. Paydar M.H. Shariat M.H. Setoudeh N. |
| author_facet | Sheybani K. Paydar M.H. Shariat M.H. Setoudeh N. |
| author_sort | Sheybani K. |
| collection | DOAJ |
| description | In the present study, feasibility of aluminothermic reduction of molybdenum oxide by microwave oven was studied. Furthermore, the effect of compaction pressure and the amount of used Al and CaO as flux on aluminothermic reduction of molybdenum oxide were investigated. Thermodynamic analysis of the corresponding reaction indicated that, aluminothermic reduction of MoO3 was possible at all temperatures. XRD patterns and thermodynamic investigation of reaction products indicated that aluminothermic reduction of molybdenum oxide progressed through the formation of intermediate phases such as Al2 (MoO4)3 and MoO2, where the final products were elemental Mo and Al2O3. Results revealed that by increasing the compaction pressure of the pellet, undesired phases of molybdenum dioxide (MoO2) and aluminum molybdate Al2(MoO4)3 can be detected among the final products. By increasing the amount of Al more than stoichiometric ratio, the intermediate phases, such as MoO2, were produced. The results indicated that by adding CaO to the MoO3-Al system, the unwanted molybdenum dioxide (MoO2) and aluminum molybdate (Al2 (MoO4)3) compounds were successfully reduced to Mo.. In the present work, metallic molybdenum could easily and successfully be separated from Al2O3 slag, as the side product of the reaction, in molten phase, based on the difference in their densities. |
| format | Article |
| id | doaj-art-158b0fa5ecf64aa583e63e9f97defb75 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-158b0fa5ecf64aa583e63e9f97defb752025-02-02T10:26:05ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752020-01-0156336136910.2298/JMMB190312025S1450-53392000025SAn investigation on aluminothermic reduction of MoO3 in domestic microwave ovenSheybani K.0Paydar M.H.1Shariat M.H.2Setoudeh N.3Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, IranDepartment of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, IranDepartment of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, IranMaterials Engineering Department, Yasouj University, Yasouj, IranIn the present study, feasibility of aluminothermic reduction of molybdenum oxide by microwave oven was studied. Furthermore, the effect of compaction pressure and the amount of used Al and CaO as flux on aluminothermic reduction of molybdenum oxide were investigated. Thermodynamic analysis of the corresponding reaction indicated that, aluminothermic reduction of MoO3 was possible at all temperatures. XRD patterns and thermodynamic investigation of reaction products indicated that aluminothermic reduction of molybdenum oxide progressed through the formation of intermediate phases such as Al2 (MoO4)3 and MoO2, where the final products were elemental Mo and Al2O3. Results revealed that by increasing the compaction pressure of the pellet, undesired phases of molybdenum dioxide (MoO2) and aluminum molybdate Al2(MoO4)3 can be detected among the final products. By increasing the amount of Al more than stoichiometric ratio, the intermediate phases, such as MoO2, were produced. The results indicated that by adding CaO to the MoO3-Al system, the unwanted molybdenum dioxide (MoO2) and aluminum molybdate (Al2 (MoO4)3) compounds were successfully reduced to Mo.. In the present work, metallic molybdenum could easily and successfully be separated from Al2O3 slag, as the side product of the reaction, in molten phase, based on the difference in their densities.http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000025S.pdfmolybdenitemolybdenum oxidealuminothermic reductionslagintermediate phase |
| spellingShingle | Sheybani K. Paydar M.H. Shariat M.H. Setoudeh N. An investigation on aluminothermic reduction of MoO3 in domestic microwave oven Journal of Mining and Metallurgy. Section B: Metallurgy molybdenite molybdenum oxide aluminothermic reduction slag intermediate phase |
| title | An investigation on aluminothermic reduction of MoO3 in domestic microwave oven |
| title_full | An investigation on aluminothermic reduction of MoO3 in domestic microwave oven |
| title_fullStr | An investigation on aluminothermic reduction of MoO3 in domestic microwave oven |
| title_full_unstemmed | An investigation on aluminothermic reduction of MoO3 in domestic microwave oven |
| title_short | An investigation on aluminothermic reduction of MoO3 in domestic microwave oven |
| title_sort | investigation on aluminothermic reduction of moo3 in domestic microwave oven |
| topic | molybdenite molybdenum oxide aluminothermic reduction slag intermediate phase |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000025S.pdf |
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