DEVICE FOR GRAVITY CONCENTRATION OF METALLIFEROUS SANDS Russian patent published in 2001 - IPC

FIELD: concentration of metalliferous sands of placer deposits; mainly applicable in gravitation concentration of sands on sluice boxes. SUBSTANCE: device includes inclined trough with parallel side members and smooth bottom on which trapping surface and ladder riffles are installed; guides secured over entire length of parallel side members on which magnet is squarely installed for reciprocation above trapping surface and ladder riffles. Installed from both ends of guides are end switches. Inclined pan with pipeline system and bin is installed in point of sluice box discharge between sluice box and electromagnet over entire length of sluice box. EFFECT: higher efficiency of concentration. 3 dwg, 1 tbl