Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorPavlovic, Suzana-
Autor(es): dc.creatorBrandão, Paulo Roberto Gomes-
Data de aceite: dc.date.accessioned2019-11-06T13:30:48Z-
Data de disponibilização: dc.date.available2019-11-06T13:30:48Z-
Data de envio: dc.date.issued2014-10-31-
Data de envio: dc.date.issued2014-10-31-
Data de envio: dc.date.issued2003-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/3664-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/556914-
Descrição: dc.descriptionABSTRACT: The depressant effect of corn starch, its polysaccharide components (amylose and amylopectin), the monomer glucose and the dimer maltose were studied on hematite and quartz, by means of infrared spectrometry, adsorption isotherms determination and microflotation tests. All the carbohydrates tested have been effective in maintaining hematite hydrophilic, including glucose and maltose; as for quartz, only a flocculation action (mainly by amylopectin) had a mild effect in decreasing its floatability by the amine collector. FTIR studies confirmed that the carbohydrates adsorbed intensively onto hematite and the spectra of the adsorbed polymers and monomer were very similar, even though the non-adsorbed monomer spectrum was markedly different. The common adsorption mechanism indicated is a surface reaction involving the iron ion.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Minerals Engineering concede permissão para depósito deste artigo no Repositório Institucional da UFOP.-
Palavras-chave: dc.subjectMineral processing-
Palavras-chave: dc.subjectIron ores-
Palavras-chave: dc.subjectFlotation depressants-
Título: dc.titleAdsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.-
Aparece nas coleções:Repositório Institucional - UFOP

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