METHOD OF GRAVITY CONCENTRATION AND DEVICE TO THIS END Russian patent published in 2014 - IPC B03B5/12 

FIELD: process engineering.

SUBSTANCE: invention relates to dressing and separation of material according to gravity properties and can be used for extraction of mineral parts and high-density metals including gold and platinoids from schlich concentrates of gravel deposits. Method of dressing of polymineral polydisperse mixes in water containing different-density particles includes feed of initial material in the form of thick suspension in concentrate floor zone and feed of loosening water. Material is separated by gravity into light and heavy fractions to concentrate high-density particles above working space and to discharge heavy fraction intermittently. Material in solid flow as solid final layer is forced horizontally in circular gap diverging from centre and upflow of water is fed therein at a time. Entire bilk of material is subjected to vibrations to displace high-density particle due to the process of downward segregation of horizontally moving material layer with concentration of particles on working pace bottom. Proposed method is implemented with help of device including cylindrical vertical housing, initial material feeder composed by vertical channel, working space at device bottom zone of the device with loosening water feed assembly and light fraction discharge assy. Working space is formed between top and bottom surfaces for horizontal displacement in circular gap from the centre to OD. Vibrator is mounted on the housing to transmit high-frequency vibrations via membrane into material bulk.

EFFECT: higher efficiency of extraction.

3 cl, 3 dwg