Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/3664
Title: Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz.
Authors: Pavlovic, Suzana
Brandão, Paulo Roberto Gomes
Keywords: Mineral processing
Iron ores
Flotation depressants
Issue Date: 2003
Citation: PAVLOVIC, S.; BRANDAO P. R. G. Adsorption of starch, amylose, amylopectin and glucose monomer and their effect on the flotation of hematite and quartz. Minerals Engineering, v. 16, p. 1117-1122, 2003. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0892687503003212>. Acesso em: 20 ago. 2014.
Abstract: 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.
URI: http://www.repositorio.ufop.br/handle/123456789/3664
metadata.dc.identifier.doi: https://doi.org/10.1016/j.mineng.2003.06.011
ISSN: 0892-6875
metadata.dc.rights.license: O periódico Minerals Engineering concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3457171315747.
Appears in Collections:DEFAR - Artigos publicados em periódicos

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