FIELD: mineral concentration, particular, on washout apparatuses for gold mining at placers with massive gold. SUBSTANCE: the offered device consists of catching blades mounted at the end of perforation of scrubber, receiving trough and concentrator with pulsing bottom. Catching blades lift pebbles sizing 50-150 mm together with nuggets, then, pebble gets into receiving trough, and from trough to concentrator. Nuggets present in pebble sink onto pulsing bottom of concentrator, and pebble passes concentrator and falls into bin of stacker and further directed to dump together with large pebble. EFFECT: higher efficiency. 2 cl, 4 dwg
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