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Conference Proceedings

Centenary of Flotation Symposium

Conference Proceedings

Centenary of Flotation Symposium

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Grinding Media - Its Effect on Pulp Chemistry and Flotation Behaviour - Fact or Fiction?

A considerable volume of work exists in the literature examining the electrochemical interactions between grinding media and sulfide minerals. Broadly, most sulfide minerals are more noble than forged steel grinding media used during comminution, therefore a galvanic couple between the media and the sulfide mineral(s) exists, which increases the corrosion rate of the grinding media. The corrosion products of the grinding media, iron oxy-hydroxide species, invariably precipitate on to the surfaces of the sulfide minerals thereby affecting their floatability.
This paper explores the science behind these corrosion reactions, and provides an explanation of their impact on the pulp chemistry of sulfide mineral slurries and subsequent flotation behaviour.
A number of laboratory and plant case studies are used to illustrate the benefits of changing to a more inert grinding media.
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  • Grinding Media - Its Effect on Pulp Chemistry and Flotation Behaviour - Fact or Fiction?
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  • Published: 2005
  • PDF Size: 0.191 Mb.
  • Unique ID: P200505137

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