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INVENTION
Russian Federation Patent RU2103512

UNDERWATER AND METHOD FOR PRODUCTION OF EXTRACTION OF NOBLE METALS AND DEVICE FOR ITS IMPLEMENTATION

UNDERWATER AND METHOD FOR PRODUCTION recovery of precious metals
AND DEVICE FOR ITS IMPLEMENTATION

Name of the inventor: Blinov Igor Mikhailovich
The name of the patentee: Blinov Igor Mikhailovich
Address for correspondence:
Starting date of the patent: 1996.03.19

The invention relates to mining, in particular in the extraction and recovery of precious metals from alluvial deposits. Process comprises selecting locations by determining the dynamic characteristics of the water flow and the installation of the device head at the bottom of a water stream and a tail on the frame of variable height. The device comprises a trough, the head part is provided with a receiving tray is pivotally attached. The trough has a tapered shape, and its bottom length accomplished arcuate shape; integral rubber coating has riffles variable height, the upper and side surfaces of which are provided with two planes kink parallel to each other, and bend the lateral surfaces at an angle to the central corrugation is formed in the direction of the head part of the trough, and may range (15 - 75 o), fracture upper surface - at an angle to the substrate can vary and corrugation (5 - 45 o), and the tail portion of the device mounted on a frame adjustable in height.

DESCRIPTION OF THE INVENTION

The invention relates to mining, in particular in the extraction and recovery of precious metals from alluvial deposits.

Known dredge placer mining method mestopokozheny [1, p. 386-391].

The disadvantage of this method are the high cost of training, opening, field development, the elimination of the consequences of environmental damage, affecting the cost of produced useful component, but also a tendency to increase the cost of complexity of the mining and processing equipment as a result of changes in the quality involved in the development of fields, for example, low, the prevalence of small trudnoulavlivaemogo useful component, vysokoglinistyh fields.

Known underwater cutter suction method of extraction and enrichment, including the absorption of alluvial deposits containing useful component, transportation gateways to, enrichment and concentrate survey [2, p. 145].

The disadvantage of this method - the costs of developing alluvial deposits, transportation, surveying concentrate as filling alluvial material locks, elimination of environmental damage.

The closest to the invention is a method of extracting useful components gateways using natural water stream [2, p. 112], including the choice of location in the shallow watercourse, installing a gateway device and a dam to increase the hydrodynamic force of water flow through the gateway, enrichment and concentrate shooting.

The disadvantage of this method is eatratah on production equipment, production of the rock mass containing useful component concentrate shooting as filling gateway, eliminating the consequences of environmental damage.

Various constructions of locks with a smooth tapered bottom and slits for discharging concentrate permanent deletion [3, p. 245-268].

The disadvantages of this device are the relative inefficiency of the separation process due to the low quality of the intercept of the concentrate, the need for regular removal and storage of the resulting concentrate.

Known gateway for processing of minerals, including gutter with parallel sides, a smooth bottom, stencil ladder with fixed top arcuate strips to create a more turbulent areas [5].

The disadvantages of this design are the gateway is relatively quick seal deposited on the bottom of the gateway, stencils and arched strips of alluvial material of varying size, which increases the loss of useful component due to drift.

Known gateway for enrichment, comprising a gutter with parallel sides, smooth bottom and mounted on the bottom strap chute varying height, the upper edge of which perform a broken line with one inflexion point [6].

The disadvantages of this design are the gateway prompt seal settled to the bottom of the gateway and stencils alluvial material, which increases the cost of a private holding or shooting increases the loss of useful component due to drift.

The closest to the invention in design and achieved result is a device for subsea development with bottom enrichment placer minerals, including one (or more sequentially established sectional slurry pipelines - gutters with riffles and slotted holes), at the end of which there is an ejector receiving a tip connected to the water discharge conduit via the reservoir and the nozzle and the hopper with inclined side walls disposed in the lower part of pipeline [2].

The disadvantage of this device is the need for the towing unit via the bottom of the tow rope, which complicates the tight physical contact with the tip of the receiving data deposits clogging possibility slotted holes, which greatly reduces work efficiency but also substantial environmental burden on the surrounding aqueous medium.

The purpose of the invention - an increase of production efficiency and the extraction of useful minerals such as gold from alluvial material transported by the natural water flow by reducing the preparation costs, opening, field development, the elimination of environmental damage, but also by creating additional turbulence zones and hydrodynamic flow regime, preventing formation of a dense bed of alluvial deposits and increasing the possibility of precipitation of the useful component.

This object is achieved in that the submerged method of extraction and recovery of precious metals, comprising the selection of the location and installation of one or a number of devices in the water flow, the selection device location is in line with the water flow by determining the dynamic characteristics of the water flow, the apparatus has a head part at the bottom water flow, and a tail portion - variable height on a frame.

The object is achieved by the fact that in the device for underwater extraction and recovery of precious metals, including tapering chute with riffles, receiving tray and the base frame, the head part of the trough is provided with a pivotally attached the output tray, the tail part of the trough is provided with a visor, bottom tapered trough along the length is made arcuate shape , whole rubber coating has a variable height riffles. The device top and side surface corrugation formed with two fracture planes, parallel to each other, and bend the lateral surfaces at an angle to the central portion in the direction of corrugation is made trough the head portion and the upper surface is formed a kink angle and the base corrugation. The tail part of the device is installed on a frame of variable height.

UNDERWATER AND METHOD FOR PRODUCTION OF EXTRACTION OF NOBLE METALS AND DEVICE FOR ITS IMPLEMENTATION UNDERWATER AND METHOD FOR PRODUCTION OF EXTRACTION OF NOBLE METALS AND DEVICE FOR ITS IMPLEMENTATION

FIG. 1 shows a plan water flow dynamic characteristics and various settings;
FIG. 2 - form A in FIG. 1; FIG. 3 - design features solid coating gateways,
FIG. 4 - B-B sectional view in FIG. 3.

Water flow 1 with a certain regime, characterized at each point by the following dynamic characteristics: the speed V, the integrated speed V Wed, and hydrodynamic force F 3 on the reference surface in the most active area having a setting of L, carries on the bottom bed of alluvial material 2 containing useful component 3. One or more of the device 4, was oriented along the vector of force F 3, overlapping the active area and passed through a 2 alluvial material is transported water flow 1, without creating conditions for the formation of a dense bed in the one-piece rubber cover 5 due to structural features of the device performance 4 and accumulating useful component 3.

The device 4 for extracting a useful component 3 of alluvial material 2 conveyed by natural water flow 1 includes converging chute 6 formed along the length of the arcuate shape, which fits and is fixed integral rubber covering 5 of artificial roughness riffles variable height 7 located apart by a distance greater than the maximum size of the transported allyuyuvialnogo material 2, the upper surface 8 which, and as the side surfaces 9, 10 are broken from the two planes of fracture 11 and 12 parallel to each other, and bend the lateral surfaces 9 and 10 is formed at an angle 13 to the plane of the fracture 11 and 12 in the direction of the wider head portion 14 converging chute 6 and the upper surface of the break is made at an angle of 15 to the base 7. The base corrugation wider head part 14 of the trough 6 is hinged tray 16 receiving wedge-shaped to provide intimate contact with the channel bottom and prevent rackets alluvial material 2 with a valuable component 3 by penetration of the tray 16 in the sediments or natural unevenness. Narrowed tail portion 17 trough 6 is provided with a visor 18, the sides of a triangular shape to reduce the effective cross-section of water flow 1 through the unit 4 and is mounted on the frame 19 of variable height.

Method is as follows

Initially predelyayutsya mode and dynamic characteristics of the water flow at various points in one speed, hydrodynamic force F 3 on the reference surface and the integrated speed, which according to Scheme L. Prandtl [4, p. 106] can be determined empirically and is expressed by the equation



where V Wed - dynamic flow rate, m / s;

g - acceleration of gravity at the point of measurement, m / s 2;

R - hydraulic radius in meters;

i - hydraulic gradient,%.

The magnitude of the dynamic speed and dependent magnitude of the component of the hydrodynamic forces on the reference surface F 3, from which the water stream 1 operates on a single particle of alluvial material 2 and which depends not only on the shape and particle orientation, but also from the fact that the particles and the medium, in which it is located, and the moving speed of the water flow is a function of the depth of one stream can be determined by experiment, by determining the time t, and the distance S, the reference sample traveled under the influence of water flow on the inclined plane 1. The remaining unknown quantities are determined by the equations of motion, using Newton's second law [3, p. 97-98]. Since the value of V and F 3 are not constant over time due to the variability of a number of factors, climatic and geological features, the need to focus on some average value. After site selection, the most appropriate conditions required, installing one or more devices 4 a wider head part 14 tapering chute 6 toward the water flow 1, and the rear constricted part 17 on the base frame 19, height adjustable recessed hinged output tray 16 wedge-shaped bottom deposits or natural unevenness, stowage and securing on the bottom of the converging chute 6 solid rubber coating 5. for more turbulence will create hydrodynamic force F 3 the water flow directed at an angle to the surface of the solid rubber coating 5 as a result of the longitudinal curvature of the bottom 6 tapering gutter installation tail portion 17 converging chute 6 at the base frame 19 of adjustable height and polygonal form corrugation, the upper surface 8 which, and as the side surfaces 9 and 10 are polygonal two planes of fracture 11 and 12 parallel to each other, and bend the lateral surfaces 9 and 10 13 is made at an angle to the plane of the fracture 11 and 12 in the direction of a wider head portion 14 tapering chute 6 and the upper surface of the break is made at an angle of 15 to the bottom of corrugation 7. significant distance between riffles 7 will prevent the formation of a dense bed of alluvial material 2. Shade 18 which is provided with a tail portion 17 tapering chute 6, with sides of triangular shape and the shape of the tapered troughs 6 reduces living within the water stream 1 and will help to increase the hydrodynamic force component F 3 in the tail section 17 devices 4 and removal of alluvial material 2 does not contain a useful component 3. Recording useful component 3 produced by extracting and replacing the solid coating is 5 to 7 riffles in dependence of the deposition process and the transfer of the useful component 3. in the case of freezing the water flow to the bottom 1 during winter five-piece rubber coating must be removed and dry to prevent premature wear due to cryogenic factors.

This method of extraction and extraction can be used on any river watercourses and systems that are involved in the transfer of alluvial material containing the useful component.

Application of this method of production will reduce total manufacturing costs by reducing them to the costs of the hydrodynamic research, production of one or more devices, transportation and installation of equipment.

The use of underwater mining method eliminates the need for continuous maintenance of the original.

This method does not assume any environmental damage. The effectiveness of this method depends on the intensity of denudation of indigenous sources of placer deposits, so it is necessary to carry out various activities that contribute to the increase of the intensity. In the case of strong flooding in order to avoid losses precipitated useful component is necessary to survey in advance and install control devices downstream by location with less dynamic characteristics of water flow. Extraction of precious metals at an early stage placer prevent its further refinement and reduce the take-out watercourses in other river systems.

USED ​​BOOKS

1. Leshkov VG Development of placer deposits. M .: Nedra, 1985.

2. Dave Molracken Gold Miningit the 1980. Northnidge, 1985, p. 260.

3. Bert RO gravity concentration technology. M .: Nedra, 1990.

4. Shilo NA Fundamentals of placers. M .: Nauka, 1985, 400.

5. Author's certificate USSR N 1440545, cl. E 03 B 5/70, 1986.

6. Author's certificate USSR N 1051769, cl. B 03 B 5/70, 1982.

7. Author's certificate USSR N 420783, cl. E 21 C 50/00, 1974 prototype.

CLAIM

1. Underwater method of extraction and recovery of precious metals, including choice of location and the installation of one or a number of devices in the water flow, characterized in that the determined mode, and the dynamic characteristics of the water flow, make the installation of one or more devices in a position corresponding to the specified characteristics, warhead at the bottom of a water stream and a tail on the frame, adjustable in height.

2. Device for subsea production and recovery of precious metals, including trough with riffles on the inner surface of the receiving device, and a tail portion base frame, characterized in that the tail part is provided with a visor chute, the receiving device is designed as a wedge-shaped tray pivotally connected to the chute having a tapered shape, with the bottom of the trough length is arcuate and integral rubber coating has riffles variable height, the upper and side surfaces of which are provided with two planes of fracture, parallel to one another, and break the side surfaces at an angle to the central part of corrugation formed in a direction the head of the trough and the upper surface of the break is made at an angle to the base of the corrugation, the tail portion of the device is mounted on the frame, adjustable height.

3. Apparatus according to claim 2, characterized in that the side surfaces to bend the central portion of corrugation may be formed at an angle of 15 to 75 o, and the fracture to the bottom surface of the upper corrugation can be formed at an angle of 5 - 45 o.

print version
Publication date 14.03.2007gg