RU1483724C - Sluice for concentrating minerals - Google Patents

Abstract

FIELD: mineral concentration. SUBSTANCE: charging system of a sluice is joined with a screen system 2, having troughs 3, placed near each screen 2 in the same level with the it, each trough 3 has the trapping coating 4. The hopper 5 is arranged under each screen 2; the hopper is provided by the efficiency controller 6. The additional trough 12 is arranged under the last hopper 5; the trough 12 being a sluice, performing an orbital motion and having the trapping coating 14. The screens 2 are arranged one over another under the hopper 5 of the previous screen 2 with decreased sizes of the screen 2 from an upper screen to a lower screen. The efficiency controller 6 is the form of a prism, having a base in the form of a right triangle, secured by its side, adjacent to one of its legs, to a wall of the hopper 5, and by its side, adjacent to its other leg, arranged in parallel with the screen 2. The hopper 5 is connected with a branch pipe 8 for feeding water. A slope of the troughs 3 decreases from an upper trough to an lower trough; the trapping coatings 4, 14 are different ones. Same of the screens 2 have vibrators. An efficiency of lower-level arranged troughs (according to a pulp) is being set due to changing an effective cross section of a flow by the controller 6. In order to increase removal of dispersed grains, an under- screen product of a lower screen sift is being fed to the additional trough 12. EFFECT: enhanced removal degree of small grains of a valuable component, intensified sorting process. 3 cl, 2 dwg

Description

 The invention relates to the enrichment of minerals and may find application in the washing of gold and platinum sands.

 The aim of the invention is to increase the extraction of small grains of a valuable component.

 In FIG. 1 shows a lock without an orbital trough with a movable catching coating, general view; in FIG. 2 - a lock with an orbital trough and a movable catching coating, general view.

 The gateway includes a loading device 1 and a screening system 2 connected with it, containing a chute 3 with a catching cover 4 adjacent to each screen and with a hopper 5 located under each screen, made with a capacity regulator 6, adjusting screws 7, and devices 8 for water supply in the form of a pipe communicated with the hopper. The pipe 8 is connected to the water supply 9, valves 10 and pump 11. The screen 2 is mounted one above the other under the hopper of the previous screen with a decrease in the size of the screen holes from the top to the bottom. The gateway is equipped with an additional groove 12 mounted under the last hopper. Some of the screens are equipped with vibrators 13. As an additional trough 12, an orbital lock with a movable catching cover 14 is used, the concentrate from which is unloaded into the receiving hopper 15.

 The performance regulator 6 is made in the form of a prism with a base in the form of a rectangular triangle attached by a face adjacent to one of the legs to the wall of the hopper, and a face adjacent to the other leg mounted parallel to the screen. The slope of the gutters decreases from upper to lower. The presence of gutters installed one below the other with a slope decreasing from the upper to the lower, and the presence of screens in the head of the gutters, the size of the sieve openings of which decreases from the upper gutter to the lower, makes it possible to isolate a material of a narrow size class and create optimal hydrodynamic regimes of its enrichment in the flow water flowing on an inclined plane. This significantly increases the recovery of grains of a valuable component. In addition, due to the fact that lower flows are established on the underlying trenches, in which grains of material of a smaller size are enriched, it is possible to use various types of capture coatings. So, for example, on the upper gutter, rubber mats with metal stencils can be used as a catching coating, and on the lower gutters - wicker calam (ruffled), spongy, Christmas-tree rubber mats, velveteen and other catching coatings. For certain conditions for the separation of mineral grains on the gutters, the optimal type of capture coating is selected, with the ability to capture the maximum number of grains of a valuable component from a given material of a narrow size class. It also allows you to increase the extraction of grains of a valuable component.

 Productivity regulators of a triangular prismatic shape and additional water supply pipes allow you to adjust the technological conditions of enrichment on the gutters and create optimal conditions for the separation of mineral grains, which is very important for the efficient capture of small grains of a valuable component.

 Additional installation of the vibrator allows you to increase the efficiency of the process of classifying material on sieves with a small cell size, for example less than 0.5 mm

 In the presence of a significant amount of dispersed grains of a valuable component in the source material, the gateway may additionally contain an orbital trough provided with a moving capture coating. Communicating the orbital motion to the channel allows intensifying the separation of mineral grains along the plane, and the continuous withdrawal of the concentrate by means of a moving capture coating reduces the drift of dispersed grains of a valuable component from gangue.

 The gateway operates as follows.

 The initial pulp enters the loading device 1 of the upper trough 3. Passing over the sieve of the screen 2, a small class of sand (for example, fineness - 4 mm, -2 mm) enters the loading device of the underlying trough. Oversize product is enriched on the capture coating 4 of the upper groove 3. The hoppers 5 of the lower grooves are equipped with regulators 6 of the productivity of a triangular prismatic shape. The productivity of the underlying grooves 3 according to the pulp is established by changing the living cross-section of the flow by a triangular prismatic productivity regulator 6 using the adjusting screw 7. The hoppers 5 are also equipped with additional water supply pipes 8, through which water is supplied through the water supply pipe 9, valves 10 and pump 11 to optimize the ratio J: T on the gutters. Using the regulators 6 of the productivity of a triangular prismatic shape and nozzles 8 of an additional water supply, optimal hydrodynamic regimes of separation of mineral grains on the gutters are created 3. To intensify the classification process, the sieves for adding small classes, for example with a mesh size of less than 0.5 mm, are additionally equipped with vibrators 13.

 To increase the extraction of dispersed grains of a valuable component, the under-sieve product of the lower sieve enters the orbital trough 12 provided with a movable catching coating 14. The concentrate from the moving catching coating 14 is continuously discharged into the receiving hopper 15, and the tails are discharged along the slope of the trough in the opposite direction.

 The use of an orbital trough with a movable catching coating will reduce the size of the extracted grains of a valuable component to 1-5 microns.

Claims (3)

 1. A GATEWAY FOR ENRICHMENT OF USEFUL FOSSILS, including a loading device and a screening system connected with it, containing a gutter with a catching coating adjacent to each screen and a hopper located under each screen, made with a capacity regulator, a water supply device, different the fact that, in order to increase the extraction of small grains of a valuable component, it is equipped with an additional trough installed under the last hopper, the screening systems of the screens are installed one under another under the hopper of the previous screen with a decrease in the size of the holes of the screen from the top to the bottom, while the performance controller is made in the form of a prism with a base in the form of a rectangular triangle, attached by a face adjacent to one leg, to the wall of the hopper, and a face adjacent to another leg, installed parallel to the screen, and the water supply device is made in the form of a pipe connected with the hopper, the slope of the gutters decreases from the top to the bottom, and the catching cover of different gutters differs ichny.  2. The gateway according to claim 1, characterized in that, in order to intensify the classification process, it is equipped with vibrators installed on part of the screens.  3. The gateway according to claims 1 and 2, characterized in that as an additional gutter, a gateway with orbital movement with a moving catching coating is used.

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