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- W2034654157 abstract "The study extends previous fundamental modelling work on the influence of surface microtopography on enhanced dissolution (mechanical activation) of milled particles. Specifically, it analyses quantitatively the conjoint effects of particle size and the fraction (α) of dissolution sites associated with steps on the overall mass dissolution behaviour of fine particles. The study shows clearly that microtopography-enhanced dissolution is likely to be most evident for leaching processes exhibiting high activation energies of dissolution (∼70 kJmol−1 or higher) and unlikely to be evident in particle sizes larger than a few μm. Experimental determination of representative α-values obtained from scanning electron micrographs of three crushed minerals (sphalerite, ilmenite and chalcopyrite) suggest that the limiting milled particle size for significant microtopography-enhanced dissolution lies within the range from ∼ 0.2 to ∼0.4μm." @default.
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- W2034654157 date "2002-04-01" @default.
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- W2034654157 title "Enhanced dissolution of minerals: Conjoint effects of particle size and microtopography" @default.
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- W2034654157 doi "https://doi.org/10.1016/s0892-6875(02)00017-1" @default.
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