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Steady-State Optimization of Iron Ore Regrinding: The optimization work for this open-circuit regrind plant investigated the effect of ball recharge size and mill percent solids with the objective to increase throughput at the current product size. This would reduce the unit energy costs (kwh/t), since an increase in revenue due to the augmented capacity is achieved at the same power draw.

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PDF | At present we are witnessing large investments in the iron ore industry, fuelled by demand from Asia. At the same time, there is a changing landscape in pricing of iron ores, with the recent ...

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The major benefit of fully autogenous grinding is the elimination of steel grinding media costs and the need to discriminate between steel and magnetite in coarse magnetic separation. The separation step between grinding stages progressively reduces the amount of material to be ground.

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Traditionally, the lowest operating cost was achieved by multi stage fully autogenous grinding due to elimination of steel grinding media costs which may represent up to 50% of the grinding cost ...