FIELD: dressing of mineral resources. SUBSTANCE: spiral-laminated concentrator is used to recover fine gold while processing man-made and pillar placers with large content of fine gold. Spiral-laminated concentrator has bath expanding upward with inclined settling plates mounted above transporting spirals fitted with pins-agitators installed above chambers- slime collectors, drive, loading gear, drain thresholds set by level, unloading gear, agitators positioned in chambers-slime collectors with rotation drives mounted on chambers-slime collectors. In this case chambers-slime collectors are filled with heavy liquid which does not mix with water. EFFECT: enhanced efficiency of recovery of fine gold, prolonged time of uninterrupted operation of concentrator. 5 dwg
