Sedimentation and rheological behavior of reactive and non-reactive magnesium hydroxide pulps for industrial spray dryer processing

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dc.creatorElaine Cristina Campos
dc.creatorDiego Henrique de Souza Chaves
dc.creatorCarolina Maria Ferreira
dc.creatorSônia Denise Ferreira Rocha
dc.creatorViviane Santos Birchal
dc.date.accessioned2024-12-17T09:33:27Z
dc.date.accessioned2025-09-09T00:52:13Z
dc.date.available2024-12-17T09:33:27Z
dc.date.issued2023-01
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1590/0366-69132023693893411
dc.identifier.issn1678-4553
dc.identifier.urihttps://hdl.handle.net/1843/78716
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofCerâmica
dc.rightsAcesso Aberto
dc.subjectEstabilidade.
dc.subjectReologia
dc.subject.otherPhysical-chemical characterization
dc.subject.otherRheology
dc.subject.otherSedimentation
dc.subject.otherStability
dc.titleSedimentation and rheological behavior of reactive and non-reactive magnesium hydroxide pulps for industrial spray dryer processing
dc.typeArtigo de periódico
local.citation.epage47
local.citation.issue389
local.citation.spage39
local.citation.volume69
local.description.resumoTwo different reactive concentrated magnesium hydroxide (HM) pulps, produced in a lab reactor mill, and a synthetic and non-reactive HM-pulp, for comparative analyses, have been prepared and studied. Sodium polyacrylate was selected as a dispersant for improving the HM pulp fluidity, with concentrations varying from 0.42% to 2.0% on a dry basis. The two reactive pulps differed from each other mainly by the impurity level and for both, a residual MgO amount was detected, implying that the hydration reaction could proceed. Results (with and without dispersant) confirmed the formation of particle clusters as HM concentration rose until a critical value, above which the pulp behaved as a solid. Reactive HM-pulps with high impurities may represent a limiting factor in the drying operation. Among all HM-pulps studied, the purest reactive pulp with 1% dispersant presented the best flow behavior making this reactive pulp the most suitable to be tested in a pilot spray dryer.
local.identifier.orcidhttps://orcid.org/0000-0002-4611-9256
local.identifier.orcidhttps://orcid.org/0000-0002-4775-6329
local.identifier.orcidhttps://orcid.org/0000-0003-3356-0488
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA MINAS
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://scielo.br/j/ce/a/SL5N5vbdpwNHzyrDvQmvvrs/

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