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Effect of milling in oxygen on sphalerite-bearing materials

Welham, N.J. and Setoudeh, N. (2005) Effect of milling in oxygen on sphalerite-bearing materials. Mineral Processing and Extractive Metallurgy Review, 114 (2). pp. 65-69.

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A sphalerite concentrate and two flotation rougher tails have been milled in an oxygen atmosphere for up to 10 h. Pressure measurements on the mills indicated that the concentrate had an induction time of < 2 h before significant reaction occurred whereas one of the tailings showed reaction within 1 h. The second tailings sample showed a slow pressure loss with time. All three samples showed a similar rate of pressure loss between 2 h and 10 h of milling indicating they were probably all reacting at a similar rate. Leaching of the milled powders in water showed significant increases which coincided with the pressure drops indicating that the oxidation products were water soluble; similar increases were also evident in acid.

Item Type: Journal Article
Publisher: Gordon & Breach Science Publ Inc
Copyright: © 2005 Institute of Materials, Minerals and Mining and Australasian Institute of Mining and Metallurgy
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