Effect of starch type on selectivity of cationic flotation of iron ore
2012 (engelsk)Inngår i: Mineral Processing and Extractive Metallurgy: Transactions of the Institutions of Mining and Metallurgy: Section C, ISSN 0371-9553, E-ISSN 1743-2855, Vol. 121, nr 2, s. 98-102Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
Cationic flotation is one of the most widely accepted technologies for upgrading siliceous iron ore using polysaccharides (mainly starches) as depressing agents for iron bearing minerals while floating silica with amines. In this paper, a group of starches are investigated as depressants for haematite. These starches are wheat, corn, rice, potato and dextrin. The role of starch type on the selectivity of the separation process has been studied through zeta potential, adsorption measurements as well as flotation tests. The effects of type of starch and pH of the medium have been studied. The results indicate that the selectivity of the separation process is strongly affected by the type of starch used, where better results are obtained with corn starch or wheat starch in comparison to the other types. Fourier transform infrared spectroscopy measurements indicated that the interaction between starches and haematite surface is intermolecular interaction
sted, utgiver, år, opplag, sider
2012. Vol. 121, nr 2, s. 98-102
HSV kategori
Forskningsprogram
Mineralteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-11012DOI: 10.1179/1743285512Y.0000000001Scopus ID: 2-s2.0-84859755353Lokal ID: 9e7d8075-3a33-4019-8602-329ec79f87efOAI: oai:DiVA.org:ltu-11012DiVA, id: diva2:983961
Merknad
Validerad; 2012; 20120423 (andbra)
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