DREDGE CONCENTRATION OF SANDS OF TECHNOGENEOUS AND PILLAR GRAVEL DEPOSITS OF GOLD AT CONSIDERABLE CONTENT OF SMALL AND FINE CLASSES OF GOLD Russian patent published in 2002 - IPC

FIELD: concentration of minerals for water-bearing placer deposits of gold or placers located under open water basins. SUBSTANCE: dredge concentration of sands of technogeneous and pillar placed deposits of gold at large content of small and fine classes of gold employs process of disintegration and classification in dredge bucket, process of main concentration in spiral plate concentrators mounted after dredge buckets and process of final concentration of concentrate. EFFECT: enhanced efficiency of entrapping small and fine classes of gold. 3 dwg