The Influence of Gangue and Additives on the Divalent Iron Content of Magnetite Pellets
During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomena occurs depends on the additives...
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| Veröffentlicht in: | Steel research international 2014-02, Vol.85 (2), p.261-272 |
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| creator | Ferreira, Serafín Cores, Alejandro Robla, J. Ignacio Verdeja, Luis Felipe Ruiz-Bustinza, Iñigo García-Carcedo, Fernando Mochon, Javier |
| description | During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomena occurs depends on the additives present and is significantly lower than that corresponding to pure magnetite. In this paper a series of magnetite pellets were formed, varying the alkalinity (CaO + MgO)/(SiO2 + Al2O3) from 0.4 to 1.9, and the MgO/CaO ratio from 0.12 to 1.3. The pellets were pyroconsolidated at temperatures ranging from 1050 to 1350°C. Pellet structure was determined and analyzed using electron microscopy. The influence of additives and gangue composition was studied at the hematite disassociation temperature.
During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomenon occurs depends on the additives present and is significantly lower than that corresponding to pure magnetite. In this paper a series of magnetite pellets were formed, varying the alkalinity, and pyroconsolidated at temperatures ranging from 1050 to 1350°C. |
| doi_str_mv | 10.1002/srin.201300370 |
| format | Article |
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During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomenon occurs depends on the additives present and is significantly lower than that corresponding to pure magnetite. In this paper a series of magnetite pellets were formed, varying the alkalinity, and pyroconsolidated at temperatures ranging from 1050 to 1350°C.</description><identifier>ISSN: 1611-3683</identifier><identifier>EISSN: 1869-344X</identifier><identifier>DOI: 10.1002/srin.201300370</identifier><language>eng</language><publisher>Weinheim: Blackwell Publishing Ltd</publisher><subject>Alkalinity ; Atmospheres ; blast furnace ; Gangue ; Hematite ; Iron ; Magnetite ; Metallurgy ; Minerals ; pellet ; Pellets ; pyroconsolidation</subject><ispartof>Steel research international, 2014-02, Vol.85 (2), p.261-272</ispartof><rights>2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3880-d55781ae9db83ba5f0b56ccf200a5efcefadc75102e7869d86ab87c337fabca03</citedby><cites>FETCH-LOGICAL-c3880-d55781ae9db83ba5f0b56ccf200a5efcefadc75102e7869d86ab87c337fabca03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fsrin.201300370$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fsrin.201300370$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Ferreira, Serafín</creatorcontrib><creatorcontrib>Cores, Alejandro</creatorcontrib><creatorcontrib>Robla, J. Ignacio</creatorcontrib><creatorcontrib>Verdeja, Luis Felipe</creatorcontrib><creatorcontrib>Ruiz-Bustinza, Iñigo</creatorcontrib><creatorcontrib>García-Carcedo, Fernando</creatorcontrib><creatorcontrib>Mochon, Javier</creatorcontrib><title>The Influence of Gangue and Additives on the Divalent Iron Content of Magnetite Pellets</title><title>Steel research international</title><addtitle>steel research int</addtitle><description>During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomena occurs depends on the additives present and is significantly lower than that corresponding to pure magnetite. In this paper a series of magnetite pellets were formed, varying the alkalinity (CaO + MgO)/(SiO2 + Al2O3) from 0.4 to 1.9, and the MgO/CaO ratio from 0.12 to 1.3. The pellets were pyroconsolidated at temperatures ranging from 1050 to 1350°C. Pellet structure was determined and analyzed using electron microscopy. The influence of additives and gangue composition was studied at the hematite disassociation temperature.
During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomenon occurs depends on the additives present and is significantly lower than that corresponding to pure magnetite. In this paper a series of magnetite pellets were formed, varying the alkalinity, and pyroconsolidated at temperatures ranging from 1050 to 1350°C.</description><subject>Alkalinity</subject><subject>Atmospheres</subject><subject>blast furnace</subject><subject>Gangue</subject><subject>Hematite</subject><subject>Iron</subject><subject>Magnetite</subject><subject>Metallurgy</subject><subject>Minerals</subject><subject>pellet</subject><subject>Pellets</subject><subject>pyroconsolidation</subject><issn>1611-3683</issn><issn>1869-344X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkEtv1DAURiMEElXplrUlNmwyXMfxI8tqgGGkdoB2oIiN5TjXxSV1Wtsp7b_Ho0EVYoM3fuicq89fVb2ksKAAzZsUfVg0QBkAk_CkOqBKdDVr229Py1lQWjOh2PPqKKUrKIspJWR7UF1sfyBZBzfOGCySyZGVCZczEhMGcjwMPvs7TGQKJBfwrb8zI4ZM1rG8LKeQd5cinZrLgNlnJJ9wHDGnF9UzZ8aER3_2w-rL-3fb5Yf65ONqvTw-qW1JAPXAuVTUYDf0ivWGO-i5sNY1AIajs-jMYCWn0KAsHxqUML2SljHpTG8NsMPq9X7uTZxuZ0xZX_tkSwYTcJqTppyyVkjFRUFf_YNeTXMMJZ2mbddC1yi-G7jYUzZOKUV0-ib6axMfNAW9q1rvqtaPVReh2wu__IgP_6H1-dl687db712fMt4_uib-1EIyyfXFZqW_wtn3z2q70efsN2Ygkc0</recordid><startdate>201402</startdate><enddate>201402</enddate><creator>Ferreira, Serafín</creator><creator>Cores, Alejandro</creator><creator>Robla, J. Ignacio</creator><creator>Verdeja, Luis Felipe</creator><creator>Ruiz-Bustinza, Iñigo</creator><creator>García-Carcedo, Fernando</creator><creator>Mochon, Javier</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>201402</creationdate><title>The Influence of Gangue and Additives on the Divalent Iron Content of Magnetite Pellets</title><author>Ferreira, Serafín ; Cores, Alejandro ; Robla, J. Ignacio ; Verdeja, Luis Felipe ; Ruiz-Bustinza, Iñigo ; García-Carcedo, Fernando ; Mochon, Javier</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3880-d55781ae9db83ba5f0b56ccf200a5efcefadc75102e7869d86ab87c337fabca03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Alkalinity</topic><topic>Atmospheres</topic><topic>blast furnace</topic><topic>Gangue</topic><topic>Hematite</topic><topic>Iron</topic><topic>Magnetite</topic><topic>Metallurgy</topic><topic>Minerals</topic><topic>pellet</topic><topic>Pellets</topic><topic>pyroconsolidation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ferreira, Serafín</creatorcontrib><creatorcontrib>Cores, Alejandro</creatorcontrib><creatorcontrib>Robla, J. Ignacio</creatorcontrib><creatorcontrib>Verdeja, Luis Felipe</creatorcontrib><creatorcontrib>Ruiz-Bustinza, Iñigo</creatorcontrib><creatorcontrib>García-Carcedo, Fernando</creatorcontrib><creatorcontrib>Mochon, Javier</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Steel research international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ferreira, Serafín</au><au>Cores, Alejandro</au><au>Robla, J. Ignacio</au><au>Verdeja, Luis Felipe</au><au>Ruiz-Bustinza, Iñigo</au><au>García-Carcedo, Fernando</au><au>Mochon, Javier</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Influence of Gangue and Additives on the Divalent Iron Content of Magnetite Pellets</atitle><jtitle>Steel research international</jtitle><addtitle>steel research int</addtitle><date>2014-02</date><risdate>2014</risdate><volume>85</volume><issue>2</issue><spage>261</spage><epage>272</epage><pages>261-272</pages><issn>1611-3683</issn><eissn>1869-344X</eissn><abstract>During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomena occurs depends on the additives present and is significantly lower than that corresponding to pure magnetite. In this paper a series of magnetite pellets were formed, varying the alkalinity (CaO + MgO)/(SiO2 + Al2O3) from 0.4 to 1.9, and the MgO/CaO ratio from 0.12 to 1.3. The pellets were pyroconsolidated at temperatures ranging from 1050 to 1350°C. Pellet structure was determined and analyzed using electron microscopy. The influence of additives and gangue composition was studied at the hematite disassociation temperature.
During the pyroconsolidation of magnetite pellets in an aerobic atmosphere, the mineral practically oxidizes in the beginning stages of the process. However, as the temperature increases, the hematite dissociates into magnetite. The temperature at which this phenomenon occurs depends on the additives present and is significantly lower than that corresponding to pure magnetite. In this paper a series of magnetite pellets were formed, varying the alkalinity, and pyroconsolidated at temperatures ranging from 1050 to 1350°C.</abstract><cop>Weinheim</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/srin.201300370</doi><tpages>12</tpages></addata></record> |
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| subjects | Alkalinity Atmospheres blast furnace Gangue Hematite Iron Magnetite Metallurgy Minerals pellet Pellets pyroconsolidation |
| title | The Influence of Gangue and Additives on the Divalent Iron Content of Magnetite Pellets |
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