LINE FOR ENRICHMENT OF GOLD-CARRYING SANDS Russian patent published in 2002 - IPC

FIELD: enrichment of mineral resources. SUBSTANCE: invention can find use in processing of sands carrying fine gold (finer than 0.1 mm) with use of dredge and washing devices. Line includes device for disintegration and classification by size with stacker, sizing screen and centrifugal apparatuses for main operation installed in sequence and intercoupled by means of transportation facilities. One centrifugal apparatus is connected to outlet for undersieve product of sizing screen. Apart from them line is fitted with hydrocyclone mounted between device for disintegration and classification by size and sizing screen and with four centrifugal apparatuses as minimum for repeat cleaning operations. Hydrocyclone is linked to outlet for undersieve product of device for disintegration and classification by size and with outlet of sand fraction to sizing screen. One centrifugal apparatus intended for main operation is joined to outlet of drain fraction of hydrocyclone. Two centrifugal apparatuses fro repeat cleaning operations are installed in sequence, intercoupled by transportation facilities and connected to concentrate outlet of centrifugal apparatus for main operation linked to outlet for undersieve product of sizing screen. Two other centrifugal apparatuses are installed in sequence, intercoupled by transportation facilities and linked to outlet of centrifugal apparatus for main operation connected to outlet of drain fraction of hydrocyclone. EFFECT: reduced loss of fine classes of gold. 1 dwg