Some electrochemical aspects of grinding media corrosion and sphalerite flotation

Vathsala, * and Natarajan, KA (1989) Some electrochemical aspects of grinding media corrosion and sphalerite flotation. In: International Journal of Mineral Processing, 26 (3-4). pp. 193-203.

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Abstract

Electrochemical aspects of the interaction between grinding media and minerals in ore grinding are shown by the corrosive wear of a hypersteel ball material and by changes in floatability of a sphalerite mineral. Rest potential, combination potential, galvanic current and mixed polarization measurements were used to study the electrochemical behaviour of sphalerite and the hypersteel grinding medium. Prior galvanic contact between the sphalerite mineral and the grinding medium was found to affect adversely the floatability of the mineral. This adverse effect was more pronounced when sphalerite was in contact with the grinding medium without an activator or collector and under oxygenated conditions. Possible electrochemical mechanisms involved are outlined.

Item Type:	Journal Article
Publication:	International Journal of Mineral Processing
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 Feb 2008
Last Modified:	19 Sep 2010 04:42
URI:	http://eprints.iisc.ac.in/id/eprint/12901

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