PRODUCTION FLOW LINE WITH GRAVITY CONCENTRATOR FOR PROCESSING OF METALLIFEROUS SANDS Russian patent published in 2000 - IPC

FIELD: equipment for concentration of rebellious gold-containing ores and placers with associated separation of metal mercury. SUBSTANCE: production flow line includes disintegrating classifier, device for primary concentration, gravity concentrator, accumulators, pumping system, concentrator, device for mercury sublimation in closed cycle, device for gold melting with absorber, Accumulator of primary concentration stage has amalgamation magazines with device for their resetting. Pumping system is installed for supply of heavy minerals of primary concentration stage after their amalgamation to pulp flow distributor of gravity concentrator. The latter is made with multiradius flow forming surface in several rows with riffles and staggered displacement of flow at outlet. Concentrator has magnets installed before section of flow displacement at outlet, accumulator of mineral inclusions sorbing mercury, and accumulator of magnetic fraction which have amalgamation magazines with their automatic control device. EFFECT: higher efficiency of recovery of useful component and mercury-containing impurities, provided safety for environment. 8 cl