The deflocculation of kaolin suspensions : the effect of various electrolytes

Detalhes bibliográficos
Autor(a) principal: Penkavová, V.
Data de Publicação: 2013
Outros Autores: Guerreiro, Margarida, Tihon, J., Teixeira, J. A.
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/1822/35135
Resumo: The deflocculation effect of conventional additives to kaolin suspensions is evaluated from the results standard rheological measurements. Several widely used electrolytes (NaOH, Na2C03, Na2Si03, SHMP = sodium hexametaphosphate, and CMC = sodium salts of carboxymethylcellulose) have been tested. The optimal concentrations of these deffloculants, in respect to reaching the maximum reduction of initial suspension viscosity, are found. The stability of deflocculated kaolin suspensions against sedimentation is evaluated and different aspects of the observed flow enhancement discussed. Inorganic electrolytes are found to be more effective in viscosity reduction, but on the other hand, low-molecular organic CMC additives produce more stable final suspensions.
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spelling The deflocculation of kaolin suspensions : the effect of various electrolyteskaolin suspensionsdeflocculantsviscosity measurementsstability of suspensionsEngenharia e Tecnologia::Engenharia dos MateriaisThe deflocculation effect of conventional additives to kaolin suspensions is evaluated from the results standard rheological measurements. Several widely used electrolytes (NaOH, Na2C03, Na2Si03, SHMP = sodium hexametaphosphate, and CMC = sodium salts of carboxymethylcellulose) have been tested. The optimal concentrations of these deffloculants, in respect to reaching the maximum reduction of initial suspension viscosity, are found. The stability of deflocculated kaolin suspensions against sedimentation is evaluated and different aspects of the observed flow enhancement discussed. Inorganic electrolytes are found to be more effective in viscosity reduction, but on the other hand, low-molecular organic CMC additives produce more stable final suspensions.Czech Science Foundation GACR through the contract P101/12/0585Universidade do MinhoPenkavová, V.Guerreiro, MargaridaTihon, J.Teixeira, J. A.2013-10-142013-10-14T00:00:00Zconference paperinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/1822/35135engPenkavová, V.; Guerreiro, Margarida; Tihon, J.; Teixeira, J. A., The deflocculation of kaolin suspensions - the effect of various electrolytes. CHISA 2013 - 20th International Congress of Chemical and Process Engineering. Srní, Czech Republic, Oct. 14-17, 1-10, 2013.info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-11T07:37:25Zoai:repositorium.sdum.uminho.pt:1822/35135Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T16:33:56.359944Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv The deflocculation of kaolin suspensions : the effect of various electrolytes
title The deflocculation of kaolin suspensions : the effect of various electrolytes
spellingShingle The deflocculation of kaolin suspensions : the effect of various electrolytes
Penkavová, V.
kaolin suspensions
deflocculants
viscosity measurements
stability of suspensions
Engenharia e Tecnologia::Engenharia dos Materiais
title_short The deflocculation of kaolin suspensions : the effect of various electrolytes
title_full The deflocculation of kaolin suspensions : the effect of various electrolytes
title_fullStr The deflocculation of kaolin suspensions : the effect of various electrolytes
title_full_unstemmed The deflocculation of kaolin suspensions : the effect of various electrolytes
title_sort The deflocculation of kaolin suspensions : the effect of various electrolytes
author Penkavová, V.
author_facet Penkavová, V.
Guerreiro, Margarida
Tihon, J.
Teixeira, J. A.
author_role author
author2 Guerreiro, Margarida
Tihon, J.
Teixeira, J. A.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Penkavová, V.
Guerreiro, Margarida
Tihon, J.
Teixeira, J. A.
dc.subject.por.fl_str_mv kaolin suspensions
deflocculants
viscosity measurements
stability of suspensions
Engenharia e Tecnologia::Engenharia dos Materiais
topic kaolin suspensions
deflocculants
viscosity measurements
stability of suspensions
Engenharia e Tecnologia::Engenharia dos Materiais
description The deflocculation effect of conventional additives to kaolin suspensions is evaluated from the results standard rheological measurements. Several widely used electrolytes (NaOH, Na2C03, Na2Si03, SHMP = sodium hexametaphosphate, and CMC = sodium salts of carboxymethylcellulose) have been tested. The optimal concentrations of these deffloculants, in respect to reaching the maximum reduction of initial suspension viscosity, are found. The stability of deflocculated kaolin suspensions against sedimentation is evaluated and different aspects of the observed flow enhancement discussed. Inorganic electrolytes are found to be more effective in viscosity reduction, but on the other hand, low-molecular organic CMC additives produce more stable final suspensions.
publishDate 2013
dc.date.none.fl_str_mv 2013-10-14
2013-10-14T00:00:00Z
dc.type.driver.fl_str_mv conference paper
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/35135
url http://hdl.handle.net/1822/35135
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Penkavová, V.; Guerreiro, Margarida; Tihon, J.; Teixeira, J. A., The deflocculation of kaolin suspensions - the effect of various electrolytes. CHISA 2013 - 20th International Congress of Chemical and Process Engineering. Srní, Czech Republic, Oct. 14-17, 1-10, 2013.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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