Abstract
ABSTRACT Processing of tailings from a garnet operation was investigated to recover lost garnet. Analyses showed the tailings contained ~15% recoverable garnet. Because current processing utilizes spiral concentrators, different gravity separations were investigated but also included magnetic separation either in the absence or presence of comminution. Combinations of Crossflow separation, tabling and magnetic separation failed with no additional comminution. However, after the tailings were sized and the +1.18 mm fraction was crushed and mixed with the −1.18 mm fraction, a garnet concentrate was obtained at ~15% mass yield with ~80% purity. Results suggest this process will improve economic performance and reduce tailings volume.
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