? 2022 Elsevier LtdDown-the-bank grade-recovery data are examined to determine whether the best performance could be correlated with balanced cell-by-cell recovery or balanced cell mass pull. Previous work had shown evidence in support of the former but here we show correlation with balanced mass pull may often be found. Balanced recovery seeks to maximize selectivity against a second floatable mineral while balanced mass pull seeks to maximize selectivity against entrained gangue. The choice, then, would appear to depend on the amount of second floatable mineral relative to entrainable gangue, but the case is made that choosing either balanced recovery or balanced mass pull is better than no choice. Most of the plants examined had forced air mechanical cells and used air rate to manipulate the bank. It is shown that using air further improves performance by controlling water recovery, and hence entrainment. Some observations on banks with self-aerated cells are included.
Bank profilingDown-the-bank cell mass pullDown-the-bank cell recoveryUse of air in forced air machines
Finch J.A.、Tan Y.H.
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Department of Mining and Materials Engineering McGill University
NSTL
Elsevier
