Mechanism of Microwave Activation on Molybdenite
The effect of microwave activation on the properties of oxidation roasting for molybdenite was investigated under the protection of inert gas, and the specific surface area, the oxidation properties, lattice constant, microstructure, and shape of molybdenite were analyzed and characterized by a lase...
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MDPI AG
2021-09-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/19/5486 |
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| author | Shuangping Yang Tiantian Zhang Shouman Liu Haixing Sun |
| author_facet | Shuangping Yang Tiantian Zhang Shouman Liu Haixing Sun |
| author_sort | Shuangping Yang |
| collection | DOAJ |
| description | The effect of microwave activation on the properties of oxidation roasting for molybdenite was investigated under the protection of inert gas, and the specific surface area, the oxidation properties, lattice constant, microstructure, and shape of molybdenite were analyzed and characterized by a laser particle size analyzer, thermogravimetry (TG), X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results show that microwave activation could effectively reduce the residual amount of sulfur in the molybdenum calcine and decrease the average particle size of molybdenite while increasing the specific surface area of molybdenite. On increasing the microwave activation power, the crystal cell volume and grain size of MoS<sub>2</sub> reduced, and the microstrain increased slightly. At the same time, the surface shape of molybdenite became looser, but the layered structure is not changed. In addition, the oxidation property changed significantly; microwave activation promoted the oxidation reaction of molybdenite above 538 °C, and the rate of weight loss increased from 6.177% to 7.718% at 620 °C. |
| first_indexed | 2024-03-10T06:56:36Z |
| format | Article |
| id | doaj.art-0c07e98f29f145819f589d97a82e2733 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:56:36Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0c07e98f29f145819f589d97a82e27332023-11-22T16:22:34ZengMDPI AGMaterials1996-19442021-09-011419548610.3390/ma14195486Mechanism of Microwave Activation on MolybdeniteShuangping Yang0Tiantian Zhang1Shouman Liu2Haixing Sun3School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaThe effect of microwave activation on the properties of oxidation roasting for molybdenite was investigated under the protection of inert gas, and the specific surface area, the oxidation properties, lattice constant, microstructure, and shape of molybdenite were analyzed and characterized by a laser particle size analyzer, thermogravimetry (TG), X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results show that microwave activation could effectively reduce the residual amount of sulfur in the molybdenum calcine and decrease the average particle size of molybdenite while increasing the specific surface area of molybdenite. On increasing the microwave activation power, the crystal cell volume and grain size of MoS<sub>2</sub> reduced, and the microstrain increased slightly. At the same time, the surface shape of molybdenite became looser, but the layered structure is not changed. In addition, the oxidation property changed significantly; microwave activation promoted the oxidation reaction of molybdenite above 538 °C, and the rate of weight loss increased from 6.177% to 7.718% at 620 °C.https://www.mdpi.com/1996-1944/14/19/5486mechanismmicrowave activationmolybdenitespecific surface areamicrostrain |
| spellingShingle | Shuangping Yang Tiantian Zhang Shouman Liu Haixing Sun Mechanism of Microwave Activation on Molybdenite Materials mechanism microwave activation molybdenite specific surface area microstrain |
| title | Mechanism of Microwave Activation on Molybdenite |
| title_full | Mechanism of Microwave Activation on Molybdenite |
| title_fullStr | Mechanism of Microwave Activation on Molybdenite |
| title_full_unstemmed | Mechanism of Microwave Activation on Molybdenite |
| title_short | Mechanism of Microwave Activation on Molybdenite |
| title_sort | mechanism of microwave activation on molybdenite |
| topic | mechanism microwave activation molybdenite specific surface area microstrain |
| url | https://www.mdpi.com/1996-1944/14/19/5486 |
| work_keys_str_mv | AT shuangpingyang mechanismofmicrowaveactivationonmolybdenite AT tiantianzhang mechanismofmicrowaveactivationonmolybdenite AT shoumanliu mechanismofmicrowaveactivationonmolybdenite AT haixingsun mechanismofmicrowaveactivationonmolybdenite |