Investigation of the structural and mineralogical changes of Tunisian phosphorite during calcinations
The thermal behavior of Tunisian phosphorite was investigated with X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR), and Raman spectroscopies and DTA-TG measurements. The XRD patterns showed that the chief mineral constituents of calcined samples are calcium oxide and fluorapatite,...
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| Veröffentlicht in: | Journal of thermal analysis and calorimetry 2015, Vol.119 (1), p.265-271 |
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| creator | Elgharbi, S. Horchani-Naifer, K. Férid, M. |
| description | The thermal behavior of Tunisian phosphorite was investigated with X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR), and Raman spectroscopies and DTA-TG measurements. The XRD patterns showed that the chief mineral constituents of calcined samples are calcium oxide and fluorapatite, while those in the raw phosphorite are calcite, dolomite, fluorapatite, and carbonate-fluorapatite. Physicochemical transformations result in the oxidation of organic matter, disappearance of calcite and dolomite crystalline phases, and partial dissociation of structural carbonates. The FT-IR and Raman spectra showed modifications of some bands; a decrease in the intensity of the v
2
and v
3
vibrations of carbonate groups and the appearance of new bands at 520 and 926 cm
−1
after calcination of phosphorites at 800 °C. These bands were assigned to isomorphous substitutions of PO
4
3−
in apatite by SiO
4
4−
. Heat treatment alters the qualitative composition of the mineral as a result; the solubility of apatite in dilute citric acid was decreased. |
| doi_str_mv | 10.1007/s10973-014-4132-5 |
| format | Article |
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2
and v
3
vibrations of carbonate groups and the appearance of new bands at 520 and 926 cm
−1
after calcination of phosphorites at 800 °C. These bands were assigned to isomorphous substitutions of PO
4
3−
in apatite by SiO
4
4−
. Heat treatment alters the qualitative composition of the mineral as a result; the solubility of apatite in dilute citric acid was decreased.</description><identifier>ISSN: 1388-6150</identifier><identifier>EISSN: 1588-2926</identifier><identifier>EISSN: 1572-8943</identifier><identifier>DOI: 10.1007/s10973-014-4132-5</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Analytical Chemistry ; Apatite ; Band spectra ; Bands ; Calcines ; Calcite ; Calcite crystals ; Carbonates ; Chemistry ; Chemistry and Materials Science ; Diffraction ; Fluorapatite ; Inorganic Chemistry ; Investigations ; Measurement Science and Instrumentation ; Phosphate minerals ; Phosphate rock ; Phosphorite ; Physical Chemistry ; Polymer Sciences ; Raman spectroscopy ; X-rays</subject><ispartof>Journal of thermal analysis and calorimetry, 2015, Vol.119 (1), p.265-271</ispartof><rights>Akadémiai Kiadó, Budapest, Hungary 2014</rights><rights>COPYRIGHT 2015 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c394t-ea3295c5a144f58d175eee6be2fa81103ce17218666853972c44884f16a721683</citedby><cites>FETCH-LOGICAL-c394t-ea3295c5a144f58d175eee6be2fa81103ce17218666853972c44884f16a721683</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10973-014-4132-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10973-014-4132-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27929,27930,41493,42562,51324</link.rule.ids></links><search><creatorcontrib>Elgharbi, S.</creatorcontrib><creatorcontrib>Horchani-Naifer, K.</creatorcontrib><creatorcontrib>Férid, M.</creatorcontrib><title>Investigation of the structural and mineralogical changes of Tunisian phosphorite during calcinations</title><title>Journal of thermal analysis and calorimetry</title><addtitle>J Therm Anal Calorim</addtitle><description>The thermal behavior of Tunisian phosphorite was investigated with X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR), and Raman spectroscopies and DTA-TG measurements. The XRD patterns showed that the chief mineral constituents of calcined samples are calcium oxide and fluorapatite, while those in the raw phosphorite are calcite, dolomite, fluorapatite, and carbonate-fluorapatite. Physicochemical transformations result in the oxidation of organic matter, disappearance of calcite and dolomite crystalline phases, and partial dissociation of structural carbonates. The FT-IR and Raman spectra showed modifications of some bands; a decrease in the intensity of the v
2
and v
3
vibrations of carbonate groups and the appearance of new bands at 520 and 926 cm
−1
after calcination of phosphorites at 800 °C. These bands were assigned to isomorphous substitutions of PO
4
3−
in apatite by SiO
4
4−
. Heat treatment alters the qualitative composition of the mineral as a result; the solubility of apatite in dilute citric acid was decreased.</description><subject>Analytical Chemistry</subject><subject>Apatite</subject><subject>Band spectra</subject><subject>Bands</subject><subject>Calcines</subject><subject>Calcite</subject><subject>Calcite crystals</subject><subject>Carbonates</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Diffraction</subject><subject>Fluorapatite</subject><subject>Inorganic Chemistry</subject><subject>Investigations</subject><subject>Measurement Science and Instrumentation</subject><subject>Phosphate minerals</subject><subject>Phosphate rock</subject><subject>Phosphorite</subject><subject>Physical Chemistry</subject><subject>Polymer Sciences</subject><subject>Raman spectroscopy</subject><subject>X-rays</subject><issn>1388-6150</issn><issn>1588-2926</issn><issn>1572-8943</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kU9r3DAQxU1oIWnaD9Cbj83Bicb6Y-kYQposBAJtehaqduxV8EpbjVzab19tnEsuRQg9Hr83oHlN8xnYJTA2XBEwM_COgegE8L6TJ80ZSK273vTqXdW8agWSnTYfiJ4ZY8YwOGtwE38jlTC5ElJs09iWHbZU8uLLkt3curht9yFi1WkKvjp-5-KEdGSflhgouNgedonqzaFgu11yiFNbUR_iy1j62Lwf3Uz46fU9b358vX26ue8eHu82N9cPnedGlA4d74300oEQo9RbGCQiqp_Yj04DMO4Rhh60UkpLbobeC6G1GEG5aivNz5sv69xDTr-W-i-7D-Rxnl3EtJAFpRiTepCmopcrOrkZbYhjKtn5era4Dz5FHEP1rwUblDKaixq4eBOoTME_ZXILkd18__aWhZX1ORFlHO0hh73Lfy0we-zLrn3Z2pc99mVlzfRrhg7H_WG2z2nJsa7rP6F_ibKX9Q</recordid><startdate>2015</startdate><enddate>2015</enddate><creator>Elgharbi, S.</creator><creator>Horchani-Naifer, K.</creator><creator>Férid, M.</creator><general>Springer Netherlands</general><general>Springer</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>2015</creationdate><title>Investigation of the structural and mineralogical changes of Tunisian phosphorite during calcinations</title><author>Elgharbi, S. ; Horchani-Naifer, K. ; Férid, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-ea3295c5a144f58d175eee6be2fa81103ce17218666853972c44884f16a721683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Analytical Chemistry</topic><topic>Apatite</topic><topic>Band spectra</topic><topic>Bands</topic><topic>Calcines</topic><topic>Calcite</topic><topic>Calcite crystals</topic><topic>Carbonates</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Diffraction</topic><topic>Fluorapatite</topic><topic>Inorganic Chemistry</topic><topic>Investigations</topic><topic>Measurement Science and Instrumentation</topic><topic>Phosphate minerals</topic><topic>Phosphate rock</topic><topic>Phosphorite</topic><topic>Physical Chemistry</topic><topic>Polymer Sciences</topic><topic>Raman spectroscopy</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Elgharbi, S.</creatorcontrib><creatorcontrib>Horchani-Naifer, K.</creatorcontrib><creatorcontrib>Férid, M.</creatorcontrib><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of thermal analysis and calorimetry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Elgharbi, S.</au><au>Horchani-Naifer, K.</au><au>Férid, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of the structural and mineralogical changes of Tunisian phosphorite during calcinations</atitle><jtitle>Journal of thermal analysis and calorimetry</jtitle><stitle>J Therm Anal Calorim</stitle><date>2015</date><risdate>2015</risdate><volume>119</volume><issue>1</issue><spage>265</spage><epage>271</epage><pages>265-271</pages><issn>1388-6150</issn><eissn>1588-2926</eissn><eissn>1572-8943</eissn><abstract>The thermal behavior of Tunisian phosphorite was investigated with X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR), and Raman spectroscopies and DTA-TG measurements. The XRD patterns showed that the chief mineral constituents of calcined samples are calcium oxide and fluorapatite, while those in the raw phosphorite are calcite, dolomite, fluorapatite, and carbonate-fluorapatite. Physicochemical transformations result in the oxidation of organic matter, disappearance of calcite and dolomite crystalline phases, and partial dissociation of structural carbonates. The FT-IR and Raman spectra showed modifications of some bands; a decrease in the intensity of the v
2
and v
3
vibrations of carbonate groups and the appearance of new bands at 520 and 926 cm
−1
after calcination of phosphorites at 800 °C. These bands were assigned to isomorphous substitutions of PO
4
3−
in apatite by SiO
4
4−
. Heat treatment alters the qualitative composition of the mineral as a result; the solubility of apatite in dilute citric acid was decreased.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10973-014-4132-5</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 1388-6150 |
| ispartof | Journal of thermal analysis and calorimetry, 2015, Vol.119 (1), p.265-271 |
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| language | eng |
| recordid | cdi_proquest_miscellaneous_1660058759 |
| source | Springer Journals |
| subjects | Analytical Chemistry Apatite Band spectra Bands Calcines Calcite Calcite crystals Carbonates Chemistry Chemistry and Materials Science Diffraction Fluorapatite Inorganic Chemistry Investigations Measurement Science and Instrumentation Phosphate minerals Phosphate rock Phosphorite Physical Chemistry Polymer Sciences Raman spectroscopy X-rays |
| title | Investigation of the structural and mineralogical changes of Tunisian phosphorite during calcinations |
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