Comparison of Extraction Behavior of Magnesium from Magnesite/Magnesia by Aluminothermic Process in Flowing Argon
The reduction process of extracting magnesium directly from low-grade magnesite by aluminothermic method in flowing argon was investigated. Then the difference between this process and the process of extracting magnesium directly from magnesia was compared and analyzed. The results indicated that th...
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| Veröffentlicht in: | Journal of sustainable metallurgy 2022-12, Vol.8 (4), p.1756-1768 |
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| creator | Guo, Junhua Li, Xin Zhang, Ting’an Han, Jibiao Geng, Jianyuan Wang, Yaosong |
| description | The reduction process of extracting magnesium directly from low-grade magnesite by aluminothermic method in flowing argon was investigated. Then the difference between this process and the process of extracting magnesium directly from magnesia was compared and analyzed. The results indicated that the reduction percentage of magnesium oxide was higher when extracting magnesium from MgCO
3
–Al pellets at the same temperature and time compared to MgO–Al pellets. The reduction percentage of magnesium oxide could reach more than 70% at 1523 K for 2 h. The kinetic models of extracting magnesium from MgCO
3
–Al and MgO–Al systems in flowing argon could be explained by three-dimensional diffusion (D3) and first-order reaction model (F1), respectively. The apparent activation energies were 232.68 kJ/mol and 110.01 kJ/mol, respectively. SEM analysis showed that the reduction products of MgCO
3
–Al pellets formed MgO·Al
2
O
3
phase with regular octahedral structure at high temperature. For MgO–Al pellets, because MgO was easy to absorb moisture and deteriorate, with the progress of reduction reaction, layered double hydroxide compounds would be formed in the reduction products.
Graphical Abstract |
| doi_str_mv | 10.1007/s40831-022-00604-x |
| format | Article |
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3
–Al pellets at the same temperature and time compared to MgO–Al pellets. The reduction percentage of magnesium oxide could reach more than 70% at 1523 K for 2 h. The kinetic models of extracting magnesium from MgCO
3
–Al and MgO–Al systems in flowing argon could be explained by three-dimensional diffusion (D3) and first-order reaction model (F1), respectively. The apparent activation energies were 232.68 kJ/mol and 110.01 kJ/mol, respectively. SEM analysis showed that the reduction products of MgCO
3
–Al pellets formed MgO·Al
2
O
3
phase with regular octahedral structure at high temperature. For MgO–Al pellets, because MgO was easy to absorb moisture and deteriorate, with the progress of reduction reaction, layered double hydroxide compounds would be formed in the reduction products.
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3
–Al pellets at the same temperature and time compared to MgO–Al pellets. The reduction percentage of magnesium oxide could reach more than 70% at 1523 K for 2 h. The kinetic models of extracting magnesium from MgCO
3
–Al and MgO–Al systems in flowing argon could be explained by three-dimensional diffusion (D3) and first-order reaction model (F1), respectively. The apparent activation energies were 232.68 kJ/mol and 110.01 kJ/mol, respectively. SEM analysis showed that the reduction products of MgCO
3
–Al pellets formed MgO·Al
2
O
3
phase with regular octahedral structure at high temperature. For MgO–Al pellets, because MgO was easy to absorb moisture and deteriorate, with the progress of reduction reaction, layered double hydroxide compounds would be formed in the reduction products.
Graphical Abstract</description><subject>Aluminum oxide</subject><subject>Argon</subject><subject>Chemical reduction</subject><subject>Earth and Environmental Science</subject><subject>Environment</subject><subject>High temperature</subject><subject>Magnesite</subject><subject>Magnesium carbonate</subject><subject>Magnesium oxide</subject><subject>Metallic Materials</subject><subject>Moisture effects</subject><subject>Pellets</subject><subject>Research Article</subject><subject>Superconductors (materials)</subject><subject>Sustainable Development</subject><issn>2199-3823</issn><issn>2199-3831</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9UMtOwzAQtBBIVNAf4GSJc6hfieNjqVpAKoIDnC0ncVJXjd3aCbR_j0sK3Djt7GhmVjsA3GB0hxHik8BQTnGCCEkQyhBL9mdgRLAQCY38-S8m9BKMQ1gjhAinjHM8AruZa7fKm-AsdDWc7zuvys7E7V6v1Idx_kg_q8bqYPoW1t61P2unJyekYHGA003fGuu6lfatKeGrd6UOARoLFxv3aWwDp75x9hpc1GoT9Pg0r8D7Yv42e0yWLw9Ps-kyKSkWXcLzlMVfdMornYm8qAjXmvFMpxnJcMqxqDOVlawoC5HimuVVWhGcC6Uxqwpa0CtwO-Ruvdv1OnRy7Xpv40lJOOMCc4FEVJFBVXoXgte13HrTKn-QGMlju3JoV8Z25Xe7ch9NdDCFKLaN9n_R_7i-AJGKflE</recordid><startdate>20221201</startdate><enddate>20221201</enddate><creator>Guo, Junhua</creator><creator>Li, Xin</creator><creator>Zhang, Ting’an</creator><creator>Han, Jibiao</creator><creator>Geng, Jianyuan</creator><creator>Wang, Yaosong</creator><general>Springer International Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-9778-5259</orcidid></search><sort><creationdate>20221201</creationdate><title>Comparison of Extraction Behavior of Magnesium from Magnesite/Magnesia by Aluminothermic Process in Flowing Argon</title><author>Guo, Junhua ; Li, Xin ; Zhang, Ting’an ; Han, Jibiao ; Geng, Jianyuan ; Wang, Yaosong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-7854604e57de698bd27ee476e562615719f6a6c4bcb951f48d5d2189ae14db3b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Aluminum oxide</topic><topic>Argon</topic><topic>Chemical reduction</topic><topic>Earth and Environmental Science</topic><topic>Environment</topic><topic>High temperature</topic><topic>Magnesite</topic><topic>Magnesium carbonate</topic><topic>Magnesium oxide</topic><topic>Metallic Materials</topic><topic>Moisture effects</topic><topic>Pellets</topic><topic>Research Article</topic><topic>Superconductors (materials)</topic><topic>Sustainable Development</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Guo, Junhua</creatorcontrib><creatorcontrib>Li, Xin</creatorcontrib><creatorcontrib>Zhang, Ting’an</creatorcontrib><creatorcontrib>Han, Jibiao</creatorcontrib><creatorcontrib>Geng, Jianyuan</creatorcontrib><creatorcontrib>Wang, Yaosong</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of sustainable metallurgy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Guo, Junhua</au><au>Li, Xin</au><au>Zhang, Ting’an</au><au>Han, Jibiao</au><au>Geng, Jianyuan</au><au>Wang, Yaosong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of Extraction Behavior of Magnesium from Magnesite/Magnesia by Aluminothermic Process in Flowing Argon</atitle><jtitle>Journal of sustainable metallurgy</jtitle><stitle>J. Sustain. Metall</stitle><date>2022-12-01</date><risdate>2022</risdate><volume>8</volume><issue>4</issue><spage>1756</spage><epage>1768</epage><pages>1756-1768</pages><issn>2199-3823</issn><eissn>2199-3831</eissn><abstract>The reduction process of extracting magnesium directly from low-grade magnesite by aluminothermic method in flowing argon was investigated. Then the difference between this process and the process of extracting magnesium directly from magnesia was compared and analyzed. The results indicated that the reduction percentage of magnesium oxide was higher when extracting magnesium from MgCO
3
–Al pellets at the same temperature and time compared to MgO–Al pellets. The reduction percentage of magnesium oxide could reach more than 70% at 1523 K for 2 h. The kinetic models of extracting magnesium from MgCO
3
–Al and MgO–Al systems in flowing argon could be explained by three-dimensional diffusion (D3) and first-order reaction model (F1), respectively. The apparent activation energies were 232.68 kJ/mol and 110.01 kJ/mol, respectively. SEM analysis showed that the reduction products of MgCO
3
–Al pellets formed MgO·Al
2
O
3
phase with regular octahedral structure at high temperature. For MgO–Al pellets, because MgO was easy to absorb moisture and deteriorate, with the progress of reduction reaction, layered double hydroxide compounds would be formed in the reduction products.
Graphical Abstract</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s40831-022-00604-x</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-9778-5259</orcidid></addata></record> |
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| subjects | Aluminum oxide Argon Chemical reduction Earth and Environmental Science Environment High temperature Magnesite Magnesium carbonate Magnesium oxide Metallic Materials Moisture effects Pellets Research Article Superconductors (materials) Sustainable Development |
| title | Comparison of Extraction Behavior of Magnesium from Magnesite/Magnesia by Aluminothermic Process in Flowing Argon |
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