Experimental carbothermal reduction of MgO at low pressure using concentrated solar energy
The improved solar reactor Sol@rmet allows to investigate the reduction of MgO in presence of carbon using concentrated solar energy in low vacuum conditions close to 900 Pa. The influence of the carbon type was studied and it was shown that a carbon issued from a biomass source was a great candidat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Technical Faculty, Bor
2018-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700048P.pdf |
| _version_ | 1819010525706584064 |
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| author | Puig J. Balat-Pichelin M. |
| author_facet | Puig J. Balat-Pichelin M. |
| author_sort | Puig J. |
| collection | DOAJ |
| description | The improved solar reactor Sol@rmet allows to investigate the reduction of MgO in presence of carbon using concentrated solar energy in low vacuum conditions close to 900 Pa. The influence of the carbon type was studied and it was shown that a carbon issued from a biomass source was a great candidate. A gradual increase of the temperature during experiment allowed to obtain promising results. Powders with a high Mg content up to 97 m% and a high yield rate up to 50% were collected. Short time experiments at fixed locations under the focus of the solar concentrator were performed in order to obtain information on the kinetics of the carbothermal reduction of MgO. Notably, these experiments have underlined the temperature effect on the CO emission. 50 to 80% of the CO emission mainly occurred in 100 s after the beginning of the experiments. The phase boundary reaction between MgO and C appeared to be the dominant process at the initial stage of the carbothermal reduction. Calculated activation energy of this process is around 260 kJ mol-1. |
| first_indexed | 2024-12-21T01:13:39Z |
| format | Article |
| id | doaj.art-a3f378fc41e04d10a004603f5224c35f |
| institution | Directory Open Access Journal |
| issn | 1450-5339 2217-7175 |
| language | English |
| last_indexed | 2024-12-21T01:13:39Z |
| publishDate | 2018-01-01 |
| publisher | Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj.art-a3f378fc41e04d10a004603f5224c35f2022-12-21T19:20:52ZengTechnical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752018-01-01541395010.2298/JMMB170215048P1450-53391700048PExperimental carbothermal reduction of MgO at low pressure using concentrated solar energyPuig J.0Balat-Pichelin M.1PROMES-CNRS Laboratory, Font-Romeu, FrancePROMES-CNRS Laboratory, Font-Romeu, FranceThe improved solar reactor Sol@rmet allows to investigate the reduction of MgO in presence of carbon using concentrated solar energy in low vacuum conditions close to 900 Pa. The influence of the carbon type was studied and it was shown that a carbon issued from a biomass source was a great candidate. A gradual increase of the temperature during experiment allowed to obtain promising results. Powders with a high Mg content up to 97 m% and a high yield rate up to 50% were collected. Short time experiments at fixed locations under the focus of the solar concentrator were performed in order to obtain information on the kinetics of the carbothermal reduction of MgO. Notably, these experiments have underlined the temperature effect on the CO emission. 50 to 80% of the CO emission mainly occurred in 100 s after the beginning of the experiments. The phase boundary reaction between MgO and C appeared to be the dominant process at the initial stage of the carbothermal reduction. Calculated activation energy of this process is around 260 kJ mol-1.http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700048P.pdfCarbothermal reductionConcentrated solar energyXRD characterizationMicrostructureKinetics |
| spellingShingle | Puig J. Balat-Pichelin M. Experimental carbothermal reduction of MgO at low pressure using concentrated solar energy Journal of Mining and Metallurgy. Section B: Metallurgy Carbothermal reduction Concentrated solar energy XRD characterization Microstructure Kinetics |
| title | Experimental carbothermal reduction of MgO at low pressure using concentrated solar energy |
| title_full | Experimental carbothermal reduction of MgO at low pressure using concentrated solar energy |
| title_fullStr | Experimental carbothermal reduction of MgO at low pressure using concentrated solar energy |
| title_full_unstemmed | Experimental carbothermal reduction of MgO at low pressure using concentrated solar energy |
| title_short | Experimental carbothermal reduction of MgO at low pressure using concentrated solar energy |
| title_sort | experimental carbothermal reduction of mgo at low pressure using concentrated solar energy |
| topic | Carbothermal reduction Concentrated solar energy XRD characterization Microstructure Kinetics |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700048P.pdf |
| work_keys_str_mv | AT puigj experimentalcarbothermalreductionofmgoatlowpressureusingconcentratedsolarenergy AT balatpichelinm experimentalcarbothermalreductionofmgoatlowpressureusingconcentratedsolarenergy |