DEVICE FOR EXTRACTION OF GOLD FROM MAGNETITE- CONTAINING PRODUCTS Russian patent published in 2004 - IPC

FIELD: concentration of minerals; extraction of gold from magnetite-containing products. SUBSTANCE: proposed device has sluice box mounted on frame and made from non- magnetic material and two magnetic systems: upper magnetic system and lower magnetic system which are located under sluice box bottom. Magnetic systems are open; they have poles at polarity alternating along sluice box. Width of alternating poles of upper magnetic system is different. Lower magnetic system is immovably mounted on frame; sluice box and upper magnetic system are mounted for mutual motion: upper magnetic system for performing longitudinal oscillatory motion relative to sluice box and sluice box for performing reciprocating motion either longitudinally or transversely when it is provided with immovable coat and for performing reciprocating, continuous or discrete motion of coat of sluice box bottom along it when it is provided with movable coat. In case of reciprocating of sluice box in transversal direction, polarity of poles of upper magnetic system is altered in this direction. EFFECT: increased extraction of gold; reduced power requirements. 3 cl, 5 dwg