RU2716074C1 - Pulp hydraulic transportation - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: invention relates to the mining industry, in particular to the pulp lifting and transportation during development of mineral deposits, in which the desired product is not crushed, for example, in the development of an amber deposit and, respectively, in hydrotransportation of pulp containing amber. Pulp hydraulic transport consists of pipeline and pulp separator with chamber separating pulp into transported and transporting flows, transporting flow by means of pressure pump is pumped under pressure into pipeline, providing energy of pipeline transportation of transported pulp flow. Pulp separator housing is communicated with the chamber by holes, the value of which is determined by the size of the stored target product, and the chamber itself is communicated with a storage pump feeding the pulp into a reservoir with sensors of the upper and lower levels, which control operation of the accumulating and pressure pumps, and through them with the valves of the pipeline.

EFFECT: proposed hydrotransportation of pulp prevents destructive effect of booster pump on more valuable part of extracted target product and allows maintaining its quality.

1 cl, 1 dwg

Description

The invention relates to the mining industry when lifting and transporting pulp in the development of mineral deposits, in which crushing of the target product is not desirable, and in particular, in the development of an amber deposit and, accordingly, during hydrotransport of pulp containing amber.

It is known that today the Kaliningrad Amber Plant Joint Stock Company remains the only enterprise in the world that uses amber production technology to produce amber. Overburden is developed by hydraulic monitors and draglines through a transport-free system and accumulates in a tailing dump. Amber containing rock is developed by a dragline and stored in a cone. Next, the cone with a powerful jet of water is washed away, and the pulp containing amber through a pulp-and-water trench flows by gravity to a pumping station for pumping to the factory. Large pieces of amber are caught manually by the net, and smaller fractions through the pumping station are piped to the primary amber enrichment unit [1].

The disadvantage of this technical solution is that the destruction of the target product occurs throughout the entire process, leading to a loss of quality and a decrease in the cost of it, in particular amber, and especially during hydrotransport, when amber containing pulp passes through the discharge pump unit, passing through the working cavity of the discharge pump .

The closest technical solution is a slurry conduit for a hydraulic mining projectile, which includes a pipeline for transporting pulp with a suction nozzle and a jet pump made in the form of an annular hydraulic elevator, and a pipeline for supplying pressure water connected to the jet pump. In this case, the pipeline for transporting the pulp is equipped with at least one slurry divider made in the form of at least three outlet pipes interconnected by a water collecting chamber, the outlet of which is connected to the discharge pump, and the outlet of the latter is connected to the pipeline for transportation of pulp located behind the discharge pipes in the direction of flow of the pulp. The jet pump can be equipped with a wear-resistant insert located in the mixing chamber [2].

The disadvantages of this technical solution are:

shock effects on the target product during hydrotransport, leading to its crushing and a significant decrease in its value;

relative to amber, it is very likely that the largest pieces of amber are sucked into the cavity of the injection pump, since the specific gravity of amber is less than that of pulp;

cavitation load on the structure in the area of the outlet pipes of the slam divider, leading to cavitation destruction of structural elements;

low efficiency of the entire installation in view of the fact that a jet pump is used as a conveying element, the efficiency of which, as is widely known, is low.

The objective of the invention is to improve the quality of the extracted target product, by preventing ingress into the cavity of the injection pump of that part of the target product, the size of which is one of the main indicators of the quality of the extracted target product, increasing the efficiency of the installation, expanding the range of pulp hydrotransport equipment.

The problem is solved in that the hydrotransport of the pulp consists of a pipeline, a pulp divider with a camera, dividing the pulp into transported and transporting streams. The transporting stream by means of a discharge pump is pumped under pressure into the pipeline, providing energy for the transported pulp stream through the pipeline. In this case, the pulp splitter housing is in communication with the chamber with openings, the size of which is determined by the size of the target product to be stored, and the chamber itself is communicated with an accumulation pump that feeds the pulp into the reservoir with sensors of upper and lower levels that control the operation of the accumulation and pressure pumps, and through them, the pipeline valves.

The claimed combination includes all the essential features characterizing the invention and providing a technical result in all cases to which the requested amount of legal protection applies.

Figure 1 schematically shows the hydrotransport of the pulp.

The pulp hydrotransport consists of a pulp splitter 1 installed on the pipeline, which divides the pipeline into a supply part 2 of the pipeline with a valve 3 located before the pulp splitter 1 and a discharge part 4 with a pipeline valve 5 located after the pulp splitter 1. The pipeline is communicated through openings 6 with the chamber 7 of the splitter 1.

The chamber 7 by means of a pipe 8 is in communication with a storage pump 9, and it, in turn, is connected by a pipe 10 with a tank 11 in which a high level sensor 12 and a low level sensor 13 are installed. The tank 11 is connected through a pipe with a pressure pump 14, which is also connected a discharge pipe 15 s after the valve space of the valve 3 of the supply part 2 of the pipeline.

The size of the holes 6 is determined from the condition of preventing the passage of the target product into the chamber 7 of the pulp splitter 1, the size of which is one of the main indicators of the quality of the target product.

Hydrotransport pulp works as follows.

When the accumulator pump 9 is turned on, valve 3 opens, pulp enters the inlet part 2 of the pipeline and valve 5 closes. In the cavity of pulp divider 1, the pulp is divided into two flows, a stream containing the target product, the size of which is one of the main quality indicators and per stream flowed through the openings 6 into the chamber 7. This pulp stream also contains the target product, but its size is not the main indicator of its quality.

The pulp from the chamber 7 through the pipe 8 with the help of the storage pump 9 and through the pipe 10 is fed into the tank 11, filling it. At the same time, the outlet part 4 of the pipeline is being filled with the target product, the size of which is one of the main quality indicators. When the tank 11 is filled with pulp to the upper level, the upper level sensor 12 gives signals to turn off the accumulation pump 9 and to turn on the pressure pump 14. Under the influence of the pressure pump 14, the pulp from the tank 11 is fed into the valve space after valve 3. Under the influence of the pulp, pressure increase the valve 3 closes, with a further increase in pressure in the pipeline, the valve 5 opens and the target product is transported. When lowering the pulp level to a lower level, the lower level sensor 13 sends a signal to turn off the discharge pump 14 and to turn on the accumulation pump 9. Then the cycle repeats.

A significant advantage of the invention is that the target product, the size of which is one of the main indicators of quality, is removed from the injection process and, accordingly, will not be split during transport.

The efficiency of the entire installation has been significantly increased due to the fact that the jet pump, which, as is widely known, has a low efficiency, is excluded from the design

Cavitational destruction of structural elements in the area of the discharge pipes of the pulp splitter is excluded since the pipes are excluded from the structure and the flow rate of the pulp into the chamber is reduced.

The range of devices for the hydrotransport of pulp has been expanded

Sources of information

1. Amber Full HD TOMS 2017. Kaliningrad Amber Plant. Published: January 18, 2018 URL https://youtu.be/kISFaxiQ_8s (accessed June 20, 2018)

2. Pat. 2272106 RF, IPC ⁸ . E02F3 / 90, Pulp line of a hydraulic mining projectile, publ. 2006.

Claims (1)

Pulp hydrotransport consists of a pipeline and a pulp divider with a chamber separating the pulp into transported and transporting streams, the transporting stream is pumped under pressure into the pipeline by means of an injection pump, providing the transported pulp stream with the energy of advancement through the pipeline, characterized in that the pulp divider body is in communication with the chamber with openings, the value which is determined by the size of the stored target product, and the camera itself is in communication with a storage pump that feeds the pulp to the p tank with sensors of the upper and lower levels that control the operation of the accumulation and discharge pumps, and through them the pipeline valves.

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