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In flotation, regrinding is used to increase the liberation of value minerals, such as chalcopyrite, from gangue minerals. As a result of the significant decrease in particle size following regrinding, flotation efficiency is generally worst. In this study it is shown that the flotation recovery (and rate) of chalcopyrite in chalcopyrite–pyrite mineral mixtures, which is lower after regrinding, could...
In the flotation of copper ores, several processing plants report that copper recovery is affected by the proportion and reactivity of pyrite in the ore, with the effect becoming more intense when the feed particles are finer as a result of regrinding. In this work, a mixed model mineral system consisting of chalcopyrite (CuFeS 2 ) and pyrite (FeS 2 ) with varying pyrite content (20–80wt...
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