RU2162746C2 - Method of extraction of fine heavy components from gravel and ore deposits and concentrating complex for realization of this method - Google Patents

Abstract

FIELD: concentration of minerals; heavy metal processing. SUBSTANCE: starting material is preliminarily washed off by means of hydraulic monitor in buddle, after which it is subjected to additional washing-off and pulp is prepared by delivery of water from hydraulic monitor to vibrating screen-sluice box in counter flow relative to starting material. Separated particles are held by inertial forces on entrapping coat in form of pulp revolving in plane of sluice box; thus intermediate concentrate and pulp are obtained for further heavy and medium concentration - 10 mm. Concentrate is periodically removed from sluice box riffles. Coarse fraction +10 mm goes to waste. Pulp is additionally concentrated in mechanical chute with natural heavy medium at delivery of stirring water to heavy fraction which is periodically removed. Light is fed to vibrating screen wherefrom +1 mm goes to waste and undersize is twisted in hydraulic column by means of ejection where heavy fine particles are entrapped by means of heavy medium between cylindrical surfaces. EFFECT: increased extraction of fine heavy particles. 3 cl, 1 dwg, 1 ex

Description

 The method for extracting thin heavy components from alluvial and ore deposits and an enrichment complex for its implementation relate to the field of mineral processing, mainly to the technology for processing heavy metals contained in small classes of feedstock, for example, in gold ore deposits.

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

 Known mobile stand-alone module for gravitational ore dressing (Mining Journal, N 4, 1977. V.I. Samusenko, V.A. Puzirev, A.V. Bogdanovich "Mobile stand-alone module for gravitational dressing"), which has the following common features: wet screening of the starting material, heavy-medium enrichment, enrichment of the light fraction remaining after intermediate screening.

 A known method for capturing technogenic mercury and placer gold (Mining Journal, N 2, 1997, pp. 41-42, VI Lebedev and others. "Technology for the extraction of technological mercury with the associated receipt of precious metals"). This method is the closest analogue and has the following common features: the consistent implementation of wet screening of the source material, the preparation and supply of pulp, heavy-medium enrichment in a mechanical tray with the supply of loosening water to the heavy fraction to create a heavy environment as a trapping coating, the discharge from the mechanical tray to shale shaker, pulp feed from shaker to retrieve valuable components in a hydrocolumn.

 There is a known scheme for capturing technogenic mercury and placer gold (Mining Journal, N 2, 1997, pp. 41-42, V.I. Lebedev and others. "Technology for the extraction of technogenic mercury with associated production of noble materials"). This scheme is the closest analogue and has the following common features: a sequentially installed device for disintegration and classification by size, a device for preparing and feeding pulp, a device for trapping a heavy fraction in the form of a sequential mechanical tray with a heavy medium in the form of an element of a device for collecting heavy fractions, vibrating screens for preparing pulp discharged from the tray, a hydrocolumn for separating light fractions.

 The advantage of the method for extracting thin heavy components from alluvial and ore deposits and the beneficiation complex for its implementation is: high performance on the starting material with efficient capture of heavy thin particles with maximum extraction of the useful component in the concentrate. The ability to enrich ores with a high content of fine heavy particles in clay.

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

 The enrichment method includes the sequential implementation of wet screening of the source material, preparation and feeding of pulp, heavy-medium enrichment in a mechanical tray with the supply of loosening water to the heavy fraction to create a heavy environment as a trapping coating, the discharge from the mechanical tray to a vibrating screen, the supply of pulp from a vibrating screen to recover valuable components in the hydrocolumn.

 The peculiarity lies in the fact that wet screening, preparation and feeding of the pulp is carried out on a vibrating screen with an impact on the source material located on the screen with a jet of water from the hydraulic monitor directed against the movement of the source material, while the heavy particles secreted by the in-screen screen are held inertial forces arising from the movement of the lock on the catching coating in the form of pulp rotating in the plane of the lock, the hydrocolumn is supplied with a heavy medium between two cylindrical surfaces with a drain from worked pulp into the central tube with the formation of a vortex funnel to separate the lung particles.

 The peculiarity lies in the fact that before feeding to the vibrating screen, the source material is washed out with a hydraulic monitor on the cradle with the separation of large gali and with the formation of a pulp stream.

 A device for implementing the enrichment method comprises a sequentially installed device for disintegration and classification by size, a device for preparing and feeding pulp, a device for trapping a heavy fraction in the form of a mechanical tray with a heavy medium arranged in series as an element of a device for collecting a heavy fraction, a vibrating screen for preparing the pulp discarded from the tray and a hydrocolumn to separate the light fraction.

 The peculiarity lies in the fact that the device for disintegration and classification by size is made in the form of a cradle, the device for preparing and feeding the pulp has the form of a hydraulic screen lock installed with the possibility of circular movement in its plane, and the hydrocolumn has a heavy environment in the form of a device element between two cylindrical surfaces with the discharge of spent pulp into the central pipe with the formation of a vortex overflow funnel in the form of an element of the device.

 In FIG. 1 shows an enrichment scheme, where 1 is a hydraulic monitor; 2 - cradle; 3 - hydraulic monitor; 4 - vibrating screen lock; 5 - a mechanical tray; 6 - vibrating screen; 7 - hydrocolumn; 8 - sludge treatment plant / SHOW /.

 Example. The source material is preliminarily washed out by the hydraulic monitor 1 on the cradle 2, then the initial material is finalized and the pulp is prepared by supplying water from the hydraulic monitor 3 to the vibrating screen lock 4 against the starting material, the particles released by inertial forces are kept from the movement of the screen screen lock by creating a catching coating in the form of rotation in the plane the gateway of the obtained pulp, receive an intermediate concentrate and pulp for further heavy-medium enrichment of -10 mm A large heavy fraction in the form of a concentrate from the flutes of the gateway is periodically removed. The coarse fraction + 10 mm washed with a hydromonitor 3 is dumped into a dump. The resulting pulp is enriched in a mechanical tray 5 with a natural accumulated heavy medium with the supply of loosening water to the heavy fraction to create a heavy medium as a trapping coating. The resulting heavy fraction is periodically removed from the bottom of the tray. The light fraction in the form of a pulp stream falls onto a vibrating screen 6. +1 mm is dumped into a dump, and the under-sieve product is twisted in a hydrocolumn 7 by ejection in order to recover thin particles of a useful component that were previously not captured during the enrichment process. Heavy thin particles are captured in a hydrocolumn using a heavy medium in the form of a device element between cylindrical surfaces. The spent pulp is poured into the central pipe with the formation of a vortex overflow funnel in the form of an element of a device for selecting a light fraction. The accumulated concentrate in the hydrocolumn is periodically removed using a rinse. The resulting concentrate on a vibrating screening gateway, a mechanical chute and a hydrocolumn is adjusted in a concentrating plant / SHOW / 8.

Claims (3)

 1. The enrichment method, including the sequential implementation of wet screening of the source material, the preparation and supply of pulp, heavy-medium enrichment in a mechanical tray with the supply of loosening water to the heavy fraction to create a heavy environment as a trapping coating, the discharge of the mechanical tray to a vibrating screen, the supply of pulp from a vibrating screen for the extraction of valuable components into the hydrocolumn, characterized in that the wet screening, preparation and feeding of the pulp is carried out on a vibrating screen-gateway with an effect on the initial ma The series located on the screen, with a jet of water from the hydraulic monitor directed against the movement of the source material, while the heavy particles emitted on the vibrating screen lock are held inertial forces arising from the movement of the lock on the catching coating in the form of pulp rotating in the plane of the lock, supply the hydrocolumn with a heavy medium between two cylindrical surfaces with the discharge of spent pulp into the central tube with the formation of a vortex funnel to separate the light particles.  2. The method according to claim 1, characterized in that before feeding to the vibrating screen, the source material is washed out with a hydraulic monitor on the cradle with the separation of large gali and with the formation of a pulp stream.  3. An enrichment device, comprising a sequentially installed device for disintegration and classification by size, a device for preparing and feeding pulp, a device for trapping a heavy fraction in the form of a mechanical tray with a heavy medium arranged in series as an element of a device for trapping a heavy fraction, a vibrating screen for preparation pulp discharged from the tray, and a hydrocolumn for separating light fraction, characterized in that the device for disintegration and classification by size is made in the form of a cradle, the device for preparing and feeding the pulp has the form of a vibrating screen lock installed with the possibility of circular movement in its plane, and the hydrocolumn has a heavy medium in the form of a device element between two cylindrical surfaces with the discharge of spent pulp into the central pipe with the formation of a vortex overflow funnel as an element of a device.