Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil

Autores
Mano, E.S.; Pinto Chaves, Arthur
Año de publicación
2018
Idioma
portugués
Tipo de recurso
documento de conferencia
Estado
versión aceptada
Descripción
Fil: Mano, E.S. Universidade de São Paulo. Escola Politécnica. Brasil.
Fil: Pinto Chaves, Arthur. Universidade de São Paulo. Escola Politécnica. Brasil.
Barite is a barium sulphate mineral (BaSO4) with high specific weight (4.5 g/cm3). It is specially used as a drilling fluid in oil and gas exploration, to suppress high formation pressures and to prevent blowouts. Two samples of Contendas of Sincorá – Bahia State – Brazil, were studied in order to develop a mineral processing route to recover barite. The mineral characterization (X-ray fluorescence and X-ray diffractometry analysis) revealed that the samples are composed respectively of 55 and 75% of barite; however, their SiO2 contents were considered high, varying from 40 to 25% (weight %). A gravity separation process was proposed due to the large difference of specific weights between quartz and barite with values of 2.65 and 4.5, respectively. The sinking and floating tests were performed on the ore sieved at screen of 6.35, 1.19 and 0.149 mm. Bromoform was used as a heavy liquid (2.89 g mL-1). The results showed that 90% of the material was concentrated in the sunk product, suggesting that quartz is still associated to barite, probably by liberation problems. Therefore, the samples were crushed to <0.149 mm (100# Tyler) and submitted to froth flotation tests. The reverse flotation of quartz did not reveal good results since quartz was still associated to barite in the depressed product. Thus, a direct froth flotation of barite was carried out and the results showed an improvement of the barite concentrate. The metallurgical recoveries obtained were 64 and 76% (weight percent) with 82% and 85% of barite content.
Fuente
XIV Jornadas Argentinas de Tratamiento de Minerales
Materia
process mineralogy
barite
froth flotation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/deed.es
Repositorio
Repositorio Institucional de Acceso Abierto (UNCA)
Institución
Universidad Nacional de Catamarca
OAI Identificador
oai:riaa-tecno.unca.edu.ar:123456789/399

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spelling Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - BrazilMano, E.S.Pinto Chaves, Arthurprocess mineralogybaritefroth flotationFil: Mano, E.S. Universidade de São Paulo. Escola Politécnica. Brasil.Fil: Pinto Chaves, Arthur. Universidade de São Paulo. Escola Politécnica. Brasil.Barite is a barium sulphate mineral (BaSO4) with high specific weight (4.5 g/cm3). It is specially used as a drilling fluid in oil and gas exploration, to suppress high formation pressures and to prevent blowouts. Two samples of Contendas of Sincorá – Bahia State – Brazil, were studied in order to develop a mineral processing route to recover barite. The mineral characterization (X-ray fluorescence and X-ray diffractometry analysis) revealed that the samples are composed respectively of 55 and 75% of barite; however, their SiO2 contents were considered high, varying from 40 to 25% (weight %). A gravity separation process was proposed due to the large difference of specific weights between quartz and barite with values of 2.65 and 4.5, respectively. The sinking and floating tests were performed on the ore sieved at screen of 6.35, 1.19 and 0.149 mm. Bromoform was used as a heavy liquid (2.89 g mL-1). The results showed that 90% of the material was concentrated in the sunk product, suggesting that quartz is still associated to barite, probably by liberation problems. Therefore, the samples were crushed to <0.149 mm (100# Tyler) and submitted to froth flotation tests. The reverse flotation of quartz did not reveal good results since quartz was still associated to barite in the depressed product. Thus, a direct froth flotation of barite was carried out and the results showed an improvement of the barite concentrate. The metallurgical recoveries obtained were 64 and 76% (weight percent) with 82% and 85% of barite content.2018-10info:eu-repo/semantics/acceptedVersioninfo:eu-repo/semantics/conferenceObjecthttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttps://riaa-tecno.unca.edu.ar/handle/123456789/399XIV Jornadas Argentinas de Tratamiento de Mineralesreponame:Repositorio Institucional de Acceso Abierto (UNCA)instname:Universidad Nacional de CatamarcaporARGinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/deed.es2025-09-30T09:26:28Zoai:riaa-tecno.unca.edu.ar:123456789/399instacron:UNCAInstitucionalhttps://riaa-tecno.unca.edu.arUniversidad públicahttps://www.unca.edu.ar/https://riaa-tecno.unca.edu.ar/oai/snrdvanesadoria@tecno.unca.edu.arArgentinaopendoar:2025-09-30 09:26:28.871Repositorio Institucional de Acceso Abierto (UNCA) - Universidad Nacional de Catamarcafalse
dc.title.none.fl_str_mv Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
title Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
spellingShingle Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
Mano, E.S.
process mineralogy
barite
froth flotation
title_short Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
title_full Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
title_fullStr Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
title_full_unstemmed Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
title_sort Caracterização e processamento mineral da barita de contendas do sicorá – Bahia - Brazil
dc.creator.none.fl_str_mv Mano, E.S.
Pinto Chaves, Arthur
author Mano, E.S.
author_facet Mano, E.S.
Pinto Chaves, Arthur
author_role author
author2 Pinto Chaves, Arthur
author2_role author
dc.subject.none.fl_str_mv process mineralogy
barite
froth flotation
topic process mineralogy
barite
froth flotation
dc.description.none.fl_txt_mv Fil: Mano, E.S. Universidade de São Paulo. Escola Politécnica. Brasil.
Fil: Pinto Chaves, Arthur. Universidade de São Paulo. Escola Politécnica. Brasil.
Barite is a barium sulphate mineral (BaSO4) with high specific weight (4.5 g/cm3). It is specially used as a drilling fluid in oil and gas exploration, to suppress high formation pressures and to prevent blowouts. Two samples of Contendas of Sincorá – Bahia State – Brazil, were studied in order to develop a mineral processing route to recover barite. The mineral characterization (X-ray fluorescence and X-ray diffractometry analysis) revealed that the samples are composed respectively of 55 and 75% of barite; however, their SiO2 contents were considered high, varying from 40 to 25% (weight %). A gravity separation process was proposed due to the large difference of specific weights between quartz and barite with values of 2.65 and 4.5, respectively. The sinking and floating tests were performed on the ore sieved at screen of 6.35, 1.19 and 0.149 mm. Bromoform was used as a heavy liquid (2.89 g mL-1). The results showed that 90% of the material was concentrated in the sunk product, suggesting that quartz is still associated to barite, probably by liberation problems. Therefore, the samples were crushed to <0.149 mm (100# Tyler) and submitted to froth flotation tests. The reverse flotation of quartz did not reveal good results since quartz was still associated to barite in the depressed product. Thus, a direct froth flotation of barite was carried out and the results showed an improvement of the barite concentrate. The metallurgical recoveries obtained were 64 and 76% (weight percent) with 82% and 85% of barite content.
description Fil: Mano, E.S. Universidade de São Paulo. Escola Politécnica. Brasil.
publishDate 2018
dc.date.none.fl_str_mv 2018-10
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http://purl.org/coar/resource_type/c_5794
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status_str acceptedVersion
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dc.language.none.fl_str_mv por
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dc.source.none.fl_str_mv XIV Jornadas Argentinas de Tratamiento de Minerales
reponame:Repositorio Institucional de Acceso Abierto (UNCA)
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