FIELD: separating solid materials.
SUBSTANCE: method comprises separating the floating pulp into the coarse-grained and fine-grained flows whose particle sizes range from 20 to 50 μm. The coarse-grained and fine-grained floating flows are then directed to the parallel floating devices for the separation. The acid and/or activator is added only during the floating the coarse-grained flow.
EFFECT: improved purification of product.
15 cl, 5 dwg, 3 tbl
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