Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation

It has been the aim of this paper to know the factors that most affect to the process of obtaining the quicklime in traditional lime kilns. To this end, a comparative study has been carried out between two quicklime types, one obtained in traditional lime kiln and another obtained in an industrial l...

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Detalhes bibliográficos
Autores: Ontiveros-Ortega E, Ruiz-Agudo EM, Ontiveros-Ortega A
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Recursos:Universidad de Jaén
Repositorio:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
OAI Identifier:oai:ruja.ujaen.es:10953/1527
Acesso em linha:https://hdl.handle.net/10953/1527
Access Level:acceso abierto
Palavra-chave:Limestone Lime Quicklime Calcination process
Traditional lime kilns Industria
5
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spelling Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservationOntiveros-Ortega E, Ruiz-Agudo EMOntiveros-Ortega ALimestone Lime Quicklime Calcination processTraditional lime kilns Industria5It has been the aim of this paper to know the factors that most affect to the process of obtaining the quicklime in traditional lime kilns. To this end, a comparative study has been carried out between two quicklime types, one obtained in traditional lime kiln and another obtained in an industrial lime kiln. On the other hand, two limestone types, commonly used in the production of lime in these kilns, have been calcination in the laboratory. They correspond to an oosparite and oomicritic limestones, traditionally used in the elaboration of limes in the Morón de la Frontera region, Seville (Spain). The samples have been analyzed from the chemical, physical and mineralogical points of view. The calcination process of the limestones and the optimum heating temperature depends of the porosity and crystalline structure original of the limestones. The calcination temperatures, longer residence time and CO2 and steam pressure in the kilns affects the size and porosity of the CaO crystals. The quicklimes with greater volume of pores allow faster access of water to the interior of the material and consequently the lime slaking reaction is less exothermic. The size of the particles CaO affects the rate of the lime slaking reaction, accelerating the reaction when the particles are smaller. The quicklimes calcined in traditional kilns are characterized by greater particle and pore size and greater volume of mesopores.Elsevier202420242018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/10953/1527reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaéninstname:Universidad de JaénInglésConstruction and Building Materialsinfo:eu-repo/semantics/openAccessoai:ruja.ujaen.es:10953/15272026-06-24T12:41:07Z
dc.title.none.fl_str_mv Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
title Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
spellingShingle Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
Ontiveros-Ortega E, Ruiz-Agudo EM
Limestone Lime Quicklime Calcination process
Traditional lime kilns Industria
5
title_short Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
title_full Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
title_fullStr Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
title_full_unstemmed Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
title_sort Thermal decomposition of the CaO in traditional lime kilns. Applications in cultural heritage conservation
dc.creator.none.fl_str_mv Ontiveros-Ortega E, Ruiz-Agudo EM
Ontiveros-Ortega A
author Ontiveros-Ortega E, Ruiz-Agudo EM
author_facet Ontiveros-Ortega E, Ruiz-Agudo EM
Ontiveros-Ortega A
author_role author
author2 Ontiveros-Ortega A
author2_role author
dc.subject.none.fl_str_mv Limestone Lime Quicklime Calcination process
Traditional lime kilns Industria
5
topic Limestone Lime Quicklime Calcination process
Traditional lime kilns Industria
5
description It has been the aim of this paper to know the factors that most affect to the process of obtaining the quicklime in traditional lime kilns. To this end, a comparative study has been carried out between two quicklime types, one obtained in traditional lime kiln and another obtained in an industrial lime kiln. On the other hand, two limestone types, commonly used in the production of lime in these kilns, have been calcination in the laboratory. They correspond to an oosparite and oomicritic limestones, traditionally used in the elaboration of limes in the Morón de la Frontera region, Seville (Spain). The samples have been analyzed from the chemical, physical and mineralogical points of view. The calcination process of the limestones and the optimum heating temperature depends of the porosity and crystalline structure original of the limestones. The calcination temperatures, longer residence time and CO2 and steam pressure in the kilns affects the size and porosity of the CaO crystals. The quicklimes with greater volume of pores allow faster access of water to the interior of the material and consequently the lime slaking reaction is less exothermic. The size of the particles CaO affects the rate of the lime slaking reaction, accelerating the reaction when the particles are smaller. The quicklimes calcined in traditional kilns are characterized by greater particle and pore size and greater volume of mesopores.
publishDate 2018
dc.date.none.fl_str_mv 2018
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/10953/1527
url https://hdl.handle.net/10953/1527
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Construction and Building Materials
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
instname:Universidad de Jaén
instname_str Universidad de Jaén
reponame_str RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
collection RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
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repository.mail.fl_str_mv
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