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Adsorption behaviour of an oxidised starch onto haematite in the presence of calcium

Subramanian, S and Natarajan, KA (1989) Adsorption behaviour of an oxidised starch onto haematite in the presence of calcium. In: Minerals Engineering, 2 (1). pp. 55-64.

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Official URL: http://dx.doi.org/10.1016/0892-6875(89)90065-4

Abstract

The adsorption behaviour of an oxidised starch AP as well as that of calcium onto haematite have been studied both individually and together. While the adsorption density of starch AP onto haematite is enhanced in the presence of calcium, the adsorption of calcium onto haematite is not promoted by starch AP. Flocculation tests on haematite ore fines in the presence of starch AP and calcium chloride reveal that the sequence in which calcium and starch are added governs the settling rates and turbidity values. Zeta potential, viscosity and conductivity measurements, and calcium ion binding studies with starch AP indicate calcium-starch interactions. Possible mechanisms involved in such interactions with respect to haematite flocculation have been discussed.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier science.
Keywords: Adsorption studies;oxidised starch;haematite;calcium; flocculation;viscosity;conductivity;zeta potential;calcium-starch interactions.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 26 Aug 2010 09:35
Last Modified: 19 Sep 2010 06:14
URI: http://eprints.iisc.ernet.in/id/eprint/31545

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