RU2165301C2 - Method of production of concentrate and technological concentration system for realization of this method - Google Patents

Abstract

FIELD: production of concentrates at concentration of metals; concentration of heavy minerals and metals contained in ore deposits of gold. SUBSTANCE: method includes wet screening on washing table by jet of water fed from hydraulic monitor, obtaining intermediate concentrate on deep filling sluice box combined with flat hydraulic screen and provided with hydraulic elevator and preparation of pulp directed to mechanical chute- shaped sluice box for heavy-medium concentration; it is mounted movably for motion in all directions in horizontal plane; each movable chute contains heavy medium which is liquefied by water fed from branch pipes found in wall and in bottom and directed to heavy medium, preparation of drainage on vibrosieve, final extraction of minerals in hydraulic tower containing heavy medium between two cylindrical surfaces which is liquefied by water fed from branch pipes found in walls and in bottom of hydraulic tower; pulp thus treated is drained into central pipe of hydraulic tower forming vortex eddy; concentrate thus obtained is drained regularly. EFFECT: enhanced efficiency of entrapping heavy thin particles. 3 cl, 1 dwg

Description

 The invention relates to methods for producing concentrate in mineral processing and to technological schemes for the enrichment of heavy minerals and metals that are contained in small classes of feedstock, for example, in gold ore deposits.

 Known production line for processing metal-bearing sands (ed. St. 1570109, class B 03 B 9/00, publ. 1995) with a selective device for trapping heavy minerals after a device for trapping grains of heavy minerals with a gateway for adjusting the power of such a device. A device for collecting grains of heavy minerals consists of special devices with a capture coating and with the supply of raw material to them with screens.

 A well-known installation scheme of Nelson concentrators (RO Burt "Technology of gravitational enrichment", M .: Nedra, 1990) with the following similar characteristics: discharge of the oversize product into the dump, through the preparation and supply of pulp it is fed to the bottom of the concentrator.

 Known mobile stand-alone module for gravity ore dressing (V. I. Samusenko, V. A. Puzyrev, A. V. Bogdanovich "Mobile stand-alone module for gravity ore dressing", Mining Journal, N 4, 1997), which implements a method for producing concentrate and the technological scheme of enrichment and has the following general features for the method: carrying out wet screening, the implementation of heavy medium enrichment, the preparation of the drain on the intermediate screening; for the scheme: a sequentially installed device for disintegration and classification by size, a device for preparing and feeding pulp, a device for heavy medium enrichment.

 A known method of producing a concentrate (V. I. Lebedev and others. "Technology for the extraction of technogenic mercury with associated extraction of noble metals", Mining Journal, N 2, 1997, pp. 41-42), which is the closest analogue to the claimed method and having the following general signs: carrying out wet screening of the source material, obtaining an intermediate concentrate at the gateway, preparing pulp directed to heavy-medium enrichment in a movable tray, preparing a drain on a vibrating screen, the subsequent direction of the industrial product draining for recovery minerals in the hydrocolumn.

 The known technological scheme of enrichment (VI Lebedev et al. "Technology for the extraction of technogenic mercury with the associated extraction of precious metals", Mining Journal, N 2, 1997, pp. 41-42) is the closest analogue of the claimed technological scheme of enrichment and has the following common features: a sequentially installed device for disintegration and classification by size, a deep-filling gateway for intermediate concentrate and pulp preparation, a sequentially installed device for heavy medium enrichment Niya, vibrating and hydroclone.

 The advantage of the concentrate production method and the beneficiation flow chart for its implementation is the high productivity of the starting material with the efficient capture of heavy fine particles with the maximum extraction of the useful component in the concentrate, and the possibility of beneficiation of ores with a high content of fine heavy particles in clay.

 EFFECT: creation of a stable process for feeding and preparing pulp by screening, followed by obtaining a concentrate from heavy fine particles.

 A method for producing a concentrate includes carrying out wet screening of the source material, obtaining an intermediate concentrate at the sluice, preparing pulp directed to heavy-medium enrichment, preparing a drain on a vibrating screen, and then sending the drain product to recover minerals in a hydrocolumn.

 The peculiarity of the method lies in the fact that the wet screening of the source material is carried out on the cradle with a washout stream of water from the hydraulic monitor, pulp preparation containing a small heavy fraction is carried out on a deep filling sluice combined with a flat hydraulic screen, the prepared pulp is fed with a hydraulic elevator upward for heavy medium concentration, enrich the pulp with obtaining concentrate in a mechanical tray lock installed with the possibility of movement in all directions in horizontal on a plane and having a heavy medium in each movable tray, which is diluted with water supply from nozzles located in the walls and bottom of the tray and directed into the thickness of the heavy medium, additional minerals are extracted in a hydrocolumn having a heavy medium between two cylindrical surfaces, diluted with water from the nozzles in the walls and bottom of the hydrocolumn, the spent pulp is poured into the central pipe of the hydrocolumn with the formation of a vortex overflow funnel, the resulting concentrate is periodically removed.

 The enrichment flow chart contains a sequentially installed device for disintegration and classification by size, a deep filling gateway for intermediate concentrate and pulp preparation, a sequentially installed device for heavy medium enrichment, a vibrating screen and a hydrocolumn.

 The peculiarity of the scheme lies in the fact that the device for disintegration and classification by size is made in the form of a cradle, and the device for heavy medium enrichment is made in the form of a mechanical chute lock, installed with the possibility in all directions in a horizontal plane, having in each movable chute a heavy medium in the form element of the device, liquefied by supplying water from the pipes in the walls and bottom of the tray, the deep filling gateway is combined with a flat hydraulic screen having a hydraulic elevator, the hydrocolumn has raschayuschuyusya heavy medium in a device element between two cylindrical surfaces, dilutes with water supplied from the nozzles in the walls and bottom with a drain hydrocolumns waste pulp in the central tube to form a vortex hydrocolumns overflow funnel as a unit element.

 The drawing shows an enrichment scheme for washing gold sands, where 1 is a hydraulic monitor; 2 - cradle; 3 - gate deep filling brand PGSh-50; 4 - a flat hydraulic screen; 5 - hydraulic elevator; 6 - mechanical tray lock; 7 - vibrating screen; 8 - hydrocolumn with the discharge of spent pulp into the Central pipe; 9 - water treatment unit with a pressure pump; 10 - concentrate installation (SHOW).

 Example. The initial sands are washed away with a hydraulic monitor 1 on cradle 2 and fed to the deep filling sluice 3 of grade ПГШ-50, which is combined with a flat hydraulic screen 4, to obtain an intermediate concentrate and prepared slurry in the form of industrial product for further heavy enrichment of -10 mm. A large heavy fraction in the form of a concentrate is periodically removed. The coarse fraction + 10 mm washed on a PGSh-50 industrial instrument is dumped into a dump. The resulting pulp is sold with a hydraulic elevator 5 upwards, where it is enriched in a mechanical tray lock 6 with a heavy medium for the formation of a concentrate, which is diluted with water from the pressure pump 9 through pipes in the walls and bottoms of the trays, which are directed into the thickness of a mobile heavy medium. Mechanical tray gateway 6 is installed with the possibility of movement in all directions in a horizontal plane. The resulting heavy fraction is periodically removed from the bottom of the mechanical tray lock. The light fraction in the form of a pulp stream falls onto a vibrating sieve of 7, +1 mm is dumped into a dump, and the under-sieve product is twisted into a hydrocolumn by ejection to separate the light fraction 8. The hydrocolumn to separate the light fraction has a rotating heavy medium between two cylindrical surfaces, which is diluted with water supplied from the nozzles in the walls and bottom of the hydrocolumn, and also has a vortex overflow funnel with the discharge of spent pulp into the central pipe. The obtained concentrate at the PGSh-50 brand deep filling lock of industrial equipment (item 3), a mechanical tray lock 6 and a hydrocolumn with the discharge of spent pulp into the central pipe 8 are adjusted at a concentrating plant (SHOW) 10.

Claims (2)

 1. A method of producing a concentrate, including carrying out wet screening of the source material, obtaining an intermediate concentrate at the sluice, preparing pulp directed to heavy-medium enrichment, preparing a drain on a vibrating screen, and then discharging the intermediate product to recover minerals in a hydrocolumn, characterized in that the wet screening of the original of material is carried out on the cradle with a wash-out stream of water from the hydraulic monitor; pulp preparation containing a small heavy fraction is carried out deeply on the sluice filling, combined with a flat hydraulic screen, the resulting prepared pulp is fed up with a hydraulic elevator for heavy medium enrichment, the pulp is enriched to obtain concentrate in a mechanical tray lock installed with the possibility of movement in all directions in a horizontal plane and having a heavy medium in each movable tray, which is diluted the supply of water from the nozzles located in the walls and bottom of each tray and directed into the thickness of a heavy environment, carry out additional extraction of useful lawsuit collected in a hydrocolumn, having a heavy medium between two cylindrical surfaces, diluted with water from the nozzles in the walls and the bottom of the hydrocolumn, the spent pulp is poured into the central pipe of the hydrocolumn with the formation of a vortex overflow funnel, the concentrate obtained is periodically removed.  2. The enrichment flow chart, containing a sequentially installed device for disintegration and classification by size, a deep filling gateway for intermediate concentrate and pulp preparation, a sequentially installed device for heavy medium enrichment, a vibrating screen and a hydrocolumn, characterized in that the device for disintegration and classification by size made in the form of a cradle, a device for heavy medium enrichment made in the form of a mechanical tray lock installed with the possibility of movement in all directions in a horizontal plane, having in each movable tray a heavy medium in the form of a device element, liquefied by supplying water from the pipes in the walls and bottom of the tray, the deep filling gateway is combined with a flat hydraulic screen having a hydraulic elevator, the hydrocolumn has a rotating heavy medium in the form of a device element between two cylindrical surfaces, liquefied by water supplied from the nozzles in the walls and the bottom of the hydrocolumn with the discharge of spent pulp into the central hydrocolumn pipe with the formation of a vortex overflow funnel in the form of an element of the device.