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Thermodynamics of Impurities Removal From Si–Fe Alloy by CaO–Al2O3–SiO2–Na2O Slag Refining
Slag refining of molten Si–Fe alloy was investigated with the ultimate goal of producing silicon suitable for solar cell application. Multiple compositions of quaternary slag of CaO–Al 2 O 3 –SiO 2 –Na 2 O were used to treat Si-20 wt pct Fe alloy at 1300 °C. Partition ratio of B increased with incre...
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| Published in: | Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2022-12, Vol.53 (6), p.4019-4028 |
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| container_end_page | 4028 |
| container_issue | 6 |
| container_start_page | 4019 |
| container_title | Metallurgical and materials transactions. B, Process metallurgy and materials processing science |
| container_volume | 53 |
| creator | Taposhe, Golam Ismot Ara Khajavi, Leili Tafaghodi |
| description | Slag refining of molten Si–Fe alloy was investigated with the ultimate goal of producing silicon suitable for solar cell application. Multiple compositions of quaternary slag of CaO–Al
2
O
3
–SiO
2
–Na
2
O were used to treat Si-20 wt pct Fe alloy at 1300 °C. Partition ratio of B increased with increasing the slag basicity, and the maximum partition ratio of boron was found to be 4.3. The addition of 10 wt pct Na
2
O results in higher removal of boron. The modified quasichemical model was utilized to compute the activity of silica at 1300 °C which was then used to calculate the borate and phosphate capacities of the slag. A comparative thermodynamic assessment was conducted by establishing a relationship between corrected optical basicity and borate and phosphate capacities. The evaluation showed that lower temperature is favorable for increasing borate and phosphate capacities in slag at particular basicity. |
| doi_str_mv | 10.1007/s11663-022-02662-8 |
| format | article |
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2
O
3
–SiO
2
–Na
2
O were used to treat Si-20 wt pct Fe alloy at 1300 °C. Partition ratio of B increased with increasing the slag basicity, and the maximum partition ratio of boron was found to be 4.3. The addition of 10 wt pct Na
2
O results in higher removal of boron. The modified quasichemical model was utilized to compute the activity of silica at 1300 °C which was then used to calculate the borate and phosphate capacities of the slag. A comparative thermodynamic assessment was conducted by establishing a relationship between corrected optical basicity and borate and phosphate capacities. The evaluation showed that lower temperature is favorable for increasing borate and phosphate capacities in slag at particular basicity.</description><identifier>ISSN: 1073-5615</identifier><identifier>EISSN: 1543-1916</identifier><identifier>DOI: 10.1007/s11663-022-02662-8</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Aluminum oxide ; Boron ; Calcium oxide ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Efficiency ; Ferrous alloys ; Investigations ; Materials Science ; Metallic Materials ; Metals ; Nanotechnology ; Optical basicity ; Original Research Article ; Photovoltaic cells ; Semiconductors ; Silicon ; Silicon dioxide ; Slag ; Solar cells ; Solids ; Solvents ; Structural Materials ; Surfaces and Interfaces ; Thermodynamics ; Thin Films</subject><ispartof>Metallurgical and materials transactions. B, Process metallurgy and materials processing science, 2022-12, Vol.53 (6), p.4019-4028</ispartof><rights>The Minerals, Metals & Materials Society and ASM International 2022</rights><rights>The Minerals, Metals & Materials Society and ASM International 2022.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c319t-d5a5621e5440556bf0c1827093a851f03269fb865bd8c697b5a2891130ea634a3</citedby><cites>FETCH-LOGICAL-c319t-d5a5621e5440556bf0c1827093a851f03269fb865bd8c697b5a2891130ea634a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27915,27916</link.rule.ids></links><search><creatorcontrib>Taposhe, Golam Ismot Ara</creatorcontrib><creatorcontrib>Khajavi, Leili Tafaghodi</creatorcontrib><title>Thermodynamics of Impurities Removal From Si–Fe Alloy by CaO–Al2O3–SiO2–Na2O Slag Refining</title><title>Metallurgical and materials transactions. B, Process metallurgy and materials processing science</title><addtitle>Metall Mater Trans B</addtitle><description>Slag refining of molten Si–Fe alloy was investigated with the ultimate goal of producing silicon suitable for solar cell application. Multiple compositions of quaternary slag of CaO–Al
2
O
3
–SiO
2
–Na
2
O were used to treat Si-20 wt pct Fe alloy at 1300 °C. Partition ratio of B increased with increasing the slag basicity, and the maximum partition ratio of boron was found to be 4.3. The addition of 10 wt pct Na
2
O results in higher removal of boron. The modified quasichemical model was utilized to compute the activity of silica at 1300 °C which was then used to calculate the borate and phosphate capacities of the slag. A comparative thermodynamic assessment was conducted by establishing a relationship between corrected optical basicity and borate and phosphate capacities. The evaluation showed that lower temperature is favorable for increasing borate and phosphate capacities in slag at particular basicity.</description><subject>Aluminum oxide</subject><subject>Boron</subject><subject>Calcium oxide</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Efficiency</subject><subject>Ferrous alloys</subject><subject>Investigations</subject><subject>Materials Science</subject><subject>Metallic Materials</subject><subject>Metals</subject><subject>Nanotechnology</subject><subject>Optical basicity</subject><subject>Original Research Article</subject><subject>Photovoltaic cells</subject><subject>Semiconductors</subject><subject>Silicon</subject><subject>Silicon dioxide</subject><subject>Slag</subject><subject>Solar cells</subject><subject>Solids</subject><subject>Solvents</subject><subject>Structural Materials</subject><subject>Surfaces and Interfaces</subject><subject>Thermodynamics</subject><subject>Thin Films</subject><issn>1073-5615</issn><issn>1543-1916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kMFKAzEURYMoqNUfcBVwPZqXTDLJshSrheKAreuQmWZqysykJq3Qnf_gH_olRkdw5-JxH4977oOL0BWQGyCkuI0AQrCMUJpGCJrJI3QGPGcZKBDHaScFy7gAforOY9wQQoRS7AxVyxcbOr869KZzdcS-wbNuuw9u52zET7bzb6bF0-A7vHCf7x9Ti8dt6w-4OuCJKdNl3NKSJV24kiZ5NLTEi9asE9y43vXrC3TSmDbay18doefp3XLykM3L-9lkPM9qBmqXrbjhgoLleU44F1VDapC0IIoZyaEhjArVVFLwaiVroYqKGyoVACPWCJYbNkLXQ-42-Ne9jTu98fvQp5eaFkwKlXPFk4sOrjr4GINt9Da4zoSDBqK_u9RDlzp1qX-61DJBbIBiMvdrG_6i_6G-AKlmd_M</recordid><startdate>20221201</startdate><enddate>20221201</enddate><creator>Taposhe, Golam Ismot Ara</creator><creator>Khajavi, Leili Tafaghodi</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>4U-</scope><scope>7SR</scope><scope>7XB</scope><scope>88I</scope><scope>8AF</scope><scope>8AO</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>L6V</scope><scope>M2P</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>S0X</scope></search><sort><creationdate>20221201</creationdate><title>Thermodynamics of Impurities Removal From Si–Fe Alloy by CaO–Al2O3–SiO2–Na2O Slag Refining</title><author>Taposhe, Golam Ismot Ara ; Khajavi, Leili Tafaghodi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-d5a5621e5440556bf0c1827093a851f03269fb865bd8c697b5a2891130ea634a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Aluminum oxide</topic><topic>Boron</topic><topic>Calcium oxide</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Efficiency</topic><topic>Ferrous alloys</topic><topic>Investigations</topic><topic>Materials Science</topic><topic>Metallic Materials</topic><topic>Metals</topic><topic>Nanotechnology</topic><topic>Optical basicity</topic><topic>Original Research Article</topic><topic>Photovoltaic cells</topic><topic>Semiconductors</topic><topic>Silicon</topic><topic>Silicon dioxide</topic><topic>Slag</topic><topic>Solar cells</topic><topic>Solids</topic><topic>Solvents</topic><topic>Structural Materials</topic><topic>Surfaces and Interfaces</topic><topic>Thermodynamics</topic><topic>Thin Films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Taposhe, Golam Ismot Ara</creatorcontrib><creatorcontrib>Khajavi, Leili Tafaghodi</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Docstoc</collection><collection>University Readers</collection><collection>Engineered Materials Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>ProQuest Pharma Collection</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>https://resources.nclive.org/materials</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Science Journals</collection><collection>ProQuest Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><jtitle>Metallurgical and materials transactions. B, Process metallurgy and materials processing science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Taposhe, Golam Ismot Ara</au><au>Khajavi, Leili Tafaghodi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermodynamics of Impurities Removal From Si–Fe Alloy by CaO–Al2O3–SiO2–Na2O Slag Refining</atitle><jtitle>Metallurgical and materials transactions. B, Process metallurgy and materials processing science</jtitle><stitle>Metall Mater Trans B</stitle><date>2022-12-01</date><risdate>2022</risdate><volume>53</volume><issue>6</issue><spage>4019</spage><epage>4028</epage><pages>4019-4028</pages><issn>1073-5615</issn><eissn>1543-1916</eissn><abstract>Slag refining of molten Si–Fe alloy was investigated with the ultimate goal of producing silicon suitable for solar cell application. Multiple compositions of quaternary slag of CaO–Al
2
O
3
–SiO
2
–Na
2
O were used to treat Si-20 wt pct Fe alloy at 1300 °C. Partition ratio of B increased with increasing the slag basicity, and the maximum partition ratio of boron was found to be 4.3. The addition of 10 wt pct Na
2
O results in higher removal of boron. The modified quasichemical model was utilized to compute the activity of silica at 1300 °C which was then used to calculate the borate and phosphate capacities of the slag. A comparative thermodynamic assessment was conducted by establishing a relationship between corrected optical basicity and borate and phosphate capacities. The evaluation showed that lower temperature is favorable for increasing borate and phosphate capacities in slag at particular basicity.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11663-022-02662-8</doi><tpages>10</tpages></addata></record> |
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| subjects | Aluminum oxide Boron Calcium oxide Characterization and Evaluation of Materials Chemistry and Materials Science Efficiency Ferrous alloys Investigations Materials Science Metallic Materials Metals Nanotechnology Optical basicity Original Research Article Photovoltaic cells Semiconductors Silicon Silicon dioxide Slag Solar cells Solids Solvents Structural Materials Surfaces and Interfaces Thermodynamics Thin Films |
| title | Thermodynamics of Impurities Removal From Si–Fe Alloy by CaO–Al2O3–SiO2–Na2O Slag Refining |
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