Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.clay.2018.02.033 http://hdl.handle.net/11449/175965 |
Resumo: | The Ceramic District of Santa Gertrudes (CDSG) is the most important producer of ceramic floor and wall tiles in Brazil. Industries that produce ceramic tiles by dry route process have researched new technologies to dry the Corumbataí Formation (Fm) raw materials. It is due to environmental problem related to the dust emission in the air, produced by beneficiation areas where the raw ceramic materials have been dried. Laboratory experiment and technological test, simulating the current tile production processes in the CDSG, were performed in the present study in order to better understand the role of temperature on clayey rocks from Corumbataí (Fm) and to avoid losses in the current tile production process. Three different illitic raw materials of different degree of weathering and compactness (hard, intermediate and soft) already used to compose the ceramic batch were dried by sunlight and forced drying at 100 °C, 200 °C and 300 °C. Results after forced drying have shown changes at the raw material morphology and size distribution after grinding; also the progressive dehydration of the expandable clay minerals which have caused the plasticity and consistency loss of the raw material and consequently affected the quality of the product. Ceramic bodies presented decreasing linear shrinkage values, loss in their bending strength, and horizontal cracks in some bodies whose raw materials were forced to dry at 200 °C and 300 °C. |
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Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking processCeramic tilesDehydration of smectiteForced dryingRaw ceramic materialsTechnological characterizationThe Ceramic District of Santa Gertrudes (CDSG) is the most important producer of ceramic floor and wall tiles in Brazil. Industries that produce ceramic tiles by dry route process have researched new technologies to dry the Corumbataí Formation (Fm) raw materials. It is due to environmental problem related to the dust emission in the air, produced by beneficiation areas where the raw ceramic materials have been dried. Laboratory experiment and technological test, simulating the current tile production processes in the CDSG, were performed in the present study in order to better understand the role of temperature on clayey rocks from Corumbataí (Fm) and to avoid losses in the current tile production process. Three different illitic raw materials of different degree of weathering and compactness (hard, intermediate and soft) already used to compose the ceramic batch were dried by sunlight and forced drying at 100 °C, 200 °C and 300 °C. Results after forced drying have shown changes at the raw material morphology and size distribution after grinding; also the progressive dehydration of the expandable clay minerals which have caused the plasticity and consistency loss of the raw material and consequently affected the quality of the product. Ceramic bodies presented decreasing linear shrinkage values, loss in their bending strength, and horizontal cracks in some bodies whose raw materials were forced to dry at 200 °C and 300 °C.Agentúra na Podporu Výskumu a VývojaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)CAPES Foundation Ministry of Education of BrazilDepartment of Economic Geology Faculty of Natural Sciences Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6Department of Petrology and Mineralogy University of São Paulo State - UNESPInstitute of Inorganic Chemistry Slovak Academy of Sciences, Dúbravská cesta 9Department of Petrology and Mineralogy University of São Paulo State - UNESPAgentúra na Podporu Výskumu a Vývoja: APVV-15-0292Ministry of Education of BrazilComenius University in BratislavaUniversidade Estadual Paulista (Unesp)Slovak Academy of Sciencesde Almeida Azzi, AndrezzaUhlík, PeterOsacký, MarekZanardo, Antenor [UNESP]Palková, Helena2018-12-11T17:18:21Z2018-12-11T17:18:21Z2018-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article92-101application/pdfhttp://dx.doi.org/10.1016/j.clay.2018.02.033Applied Clay Science, v. 157, p. 92-101.0169-1317http://hdl.handle.net/11449/17596510.1016/j.clay.2018.02.0332-s2.0-850426764872-s2.0-85042676487.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Clay Science0,992info:eu-repo/semantics/openAccess2023-11-26T06:09:38Zoai:repositorio.unesp.br:11449/175965Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-26T06:09:38Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process |
title |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process |
spellingShingle |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process de Almeida Azzi, Andrezza Ceramic tiles Dehydration of smectite Forced drying Raw ceramic materials Technological characterization |
title_short |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process |
title_full |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process |
title_fullStr |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process |
title_full_unstemmed |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process |
title_sort |
Changes in technological properties and microstructure of clayey raw materials from the Corumbataí Formation upon drying: Relevance to dry route tilemaking process |
author |
de Almeida Azzi, Andrezza |
author_facet |
de Almeida Azzi, Andrezza Uhlík, Peter Osacký, Marek Zanardo, Antenor [UNESP] Palková, Helena |
author_role |
author |
author2 |
Uhlík, Peter Osacký, Marek Zanardo, Antenor [UNESP] Palková, Helena |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Ministry of Education of Brazil Comenius University in Bratislava Universidade Estadual Paulista (Unesp) Slovak Academy of Sciences |
dc.contributor.author.fl_str_mv |
de Almeida Azzi, Andrezza Uhlík, Peter Osacký, Marek Zanardo, Antenor [UNESP] Palková, Helena |
dc.subject.por.fl_str_mv |
Ceramic tiles Dehydration of smectite Forced drying Raw ceramic materials Technological characterization |
topic |
Ceramic tiles Dehydration of smectite Forced drying Raw ceramic materials Technological characterization |
description |
The Ceramic District of Santa Gertrudes (CDSG) is the most important producer of ceramic floor and wall tiles in Brazil. Industries that produce ceramic tiles by dry route process have researched new technologies to dry the Corumbataí Formation (Fm) raw materials. It is due to environmental problem related to the dust emission in the air, produced by beneficiation areas where the raw ceramic materials have been dried. Laboratory experiment and technological test, simulating the current tile production processes in the CDSG, were performed in the present study in order to better understand the role of temperature on clayey rocks from Corumbataí (Fm) and to avoid losses in the current tile production process. Three different illitic raw materials of different degree of weathering and compactness (hard, intermediate and soft) already used to compose the ceramic batch were dried by sunlight and forced drying at 100 °C, 200 °C and 300 °C. Results after forced drying have shown changes at the raw material morphology and size distribution after grinding; also the progressive dehydration of the expandable clay minerals which have caused the plasticity and consistency loss of the raw material and consequently affected the quality of the product. Ceramic bodies presented decreasing linear shrinkage values, loss in their bending strength, and horizontal cracks in some bodies whose raw materials were forced to dry at 200 °C and 300 °C. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:18:21Z 2018-12-11T17:18:21Z 2018-06-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.clay.2018.02.033 Applied Clay Science, v. 157, p. 92-101. 0169-1317 http://hdl.handle.net/11449/175965 10.1016/j.clay.2018.02.033 2-s2.0-85042676487 2-s2.0-85042676487.pdf |
url |
http://dx.doi.org/10.1016/j.clay.2018.02.033 http://hdl.handle.net/11449/175965 |
identifier_str_mv |
Applied Clay Science, v. 157, p. 92-101. 0169-1317 10.1016/j.clay.2018.02.033 2-s2.0-85042676487 2-s2.0-85042676487.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Applied Clay Science 0,992 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
92-101 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803046660969857024 |