Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C

The dehydration process of two limonitic ores from Venezuela was studied between 250 °C and 950 °C by means of thermogravimetry, infrared spectroscopy, and x-ray diffraction. These techniques indicated for both minerals that the goethite-to-hematite transformation occurred in the range of 250-350 °C...

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Tipo de recurso:
Fecha de publicación:
2017
Institución:
Universidad Pedagógica y Tecnológica de Colombia
Repositorio:
RiUPTC: Repositorio Institucional UPTC
Idioma:
eng
OAI Identifier:
oai:repositorio.uptc.edu.co:001/14176
Acceso en línea:
https://revistas.uptc.edu.co/index.php/ingenieria/article/view/6053
https://repositorio.uptc.edu.co/handle/001/14176
Palabra clave:
Iron Ore
Limonite
Thermal Modification of Minerals
Limonita
Mineral de hierro
Modificación térmica de minerales
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License
http://purl.org/coar/access_right/c_abf379
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spelling 2017-05-022024-07-05T19:11:32Z2024-07-05T19:11:32Zhttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/605310.19053/01211129.v26.n45.2017.6053https://repositorio.uptc.edu.co/handle/001/14176The dehydration process of two limonitic ores from Venezuela was studied between 250 °C and 950 °C by means of thermogravimetry, infrared spectroscopy, and x-ray diffraction. These techniques indicated for both minerals that the goethite-to-hematite transformation occurred in the range of 250-350 °C. In addition, the x-ray diffraction showed a structural re-arrangement within the orebody above 350 °C, temperature above which only the hematite structure is recognizable. Finally, infrared spectroscopy revealed that such transformation implies the loss of structural OH- functional groups, characteristic of the limonite.Se estudió el proceso de deshidratación de dos minerales limoníticos de Venezuela entre 250 °C y 950 °C, usando termogravimetría, espectroscopia infrarroja y difracción de rayos x. Para ambos materiales, estas técnicas indicaron que la transformación de goethita a hematita ocurrió en el rango de 250 °C a 350 °C. Adicionalmente, la difracción de rayos X mostró un rearreglo estructural dentro del yacimiento mineral a una temperatura por encima de 350 °C; a temperaturas mayores, solo se reconoce la estructura de la hematita. Finalmente, la espectroscopia infrarroja reveló que la transformación de goethita a hematita implica la pérdida de grupos funcionales de OH- estructural característicos de la limonita.application/pdfapplication/xmlengengUniversidad Pedagógica y Tecnológica de Colombiahttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/6053/5584https://revistas.uptc.edu.co/index.php/ingenieria/article/view/6053/6405Revista Facultad de Ingeniería; Vol. 26 No. 45 (2017); 33-45Revista Facultad de Ingeniería; Vol. 26 Núm. 45 (2017); 33-452357-53280121-1129Iron OreLimoniteThermal Modification of MineralsLimonitaMineral de hierroModificación térmica de mineralesStudy of the calcination process of two limonitic iron ores between 250 °C and 950 °CEstudio del proceso de calcinación en dos minerales de hierro limoníticos entre 250 °C y 950 °Cinvestigationinvestigacióninfo:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a462http://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/access_right/c_abf379http://purl.org/coar/access_right/c_abf2Longa-Avello, LisbethPereyra-Zerpa, CristinaCasal-Ramos, Julio AndrésDelvasto, Pedro001/14176oai:repositorio.uptc.edu.co:001/141762025-07-18 11:53:51.395metadata.onlyhttps://repositorio.uptc.edu.coRepositorio Institucional UPTCrepositorio.uptc@uptc.edu.co
dc.title.en-US.fl_str_mv Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
dc.title.es-ES.fl_str_mv Estudio del proceso de calcinación en dos minerales de hierro limoníticos entre 250 °C y 950 °C
title Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
spellingShingle Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
Iron Ore
Limonite
Thermal Modification of Minerals
Limonita
Mineral de hierro
Modificación térmica de minerales
title_short Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
title_full Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
title_fullStr Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
title_full_unstemmed Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
title_sort Study of the calcination process of two limonitic iron ores between 250 °C and 950 °C
dc.subject.en-US.fl_str_mv Iron Ore
Limonite
Thermal Modification of Minerals
topic Iron Ore
Limonite
Thermal Modification of Minerals
Limonita
Mineral de hierro
Modificación térmica de minerales
dc.subject.es-ES.fl_str_mv Limonita
Mineral de hierro
Modificación térmica de minerales
description The dehydration process of two limonitic ores from Venezuela was studied between 250 °C and 950 °C by means of thermogravimetry, infrared spectroscopy, and x-ray diffraction. These techniques indicated for both minerals that the goethite-to-hematite transformation occurred in the range of 250-350 °C. In addition, the x-ray diffraction showed a structural re-arrangement within the orebody above 350 °C, temperature above which only the hematite structure is recognizable. Finally, infrared spectroscopy revealed that such transformation implies the loss of structural OH- functional groups, characteristic of the limonite.
publishDate 2017
dc.date.accessioned.none.fl_str_mv 2024-07-05T19:11:32Z
dc.date.available.none.fl_str_mv 2024-07-05T19:11:32Z
dc.date.none.fl_str_mv 2017-05-02
dc.type.en-US.fl_str_mv investigation
dc.type.es-ES.fl_str_mv investigación
dc.type.none.fl_str_mv info:eu-repo/semantics/article
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_2df8fbb1
dc.type.coarversion.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.coarversion.spa.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a462
status_str publishedVersion
dc.identifier.none.fl_str_mv https://revistas.uptc.edu.co/index.php/ingenieria/article/view/6053
10.19053/01211129.v26.n45.2017.6053
dc.identifier.uri.none.fl_str_mv https://repositorio.uptc.edu.co/handle/001/14176
url https://revistas.uptc.edu.co/index.php/ingenieria/article/view/6053
https://repositorio.uptc.edu.co/handle/001/14176
identifier_str_mv 10.19053/01211129.v26.n45.2017.6053
dc.language.none.fl_str_mv eng
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.uptc.edu.co/index.php/ingenieria/article/view/6053/5584
https://revistas.uptc.edu.co/index.php/ingenieria/article/view/6053/6405
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.coar.spa.fl_str_mv http://purl.org/coar/access_right/c_abf379
rights_invalid_str_mv http://purl.org/coar/access_right/c_abf379
http://purl.org/coar/access_right/c_abf2
dc.format.none.fl_str_mv application/pdf
application/xml
dc.publisher.en-US.fl_str_mv Universidad Pedagógica y Tecnológica de Colombia
dc.source.en-US.fl_str_mv Revista Facultad de Ingeniería; Vol. 26 No. 45 (2017); 33-45
dc.source.es-ES.fl_str_mv Revista Facultad de Ingeniería; Vol. 26 Núm. 45 (2017); 33-45
dc.source.none.fl_str_mv 2357-5328
0121-1129
institution Universidad Pedagógica y Tecnológica de Colombia
repository.name.fl_str_mv Repositorio Institucional UPTC
repository.mail.fl_str_mv repositorio.uptc@uptc.edu.co
_version_ 1839633886430101504

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