Dust fall system for flat ground type red mud storage yard adopting filter cake biscuit method

Abstract

The utility model discloses a dust fall system of a flat ground type red mud storage yard by a filter cake method, which comprises the red mud storage yard, a spray head, a valve, a water delivery main pipe, a water delivery branch pipe, a water drainage vertical shaft, a water drainage pipe, a clarification tank, a water return tank, a lifting pump and a separation dam, the red mud storage yard is high on the periphery and low in the middle, and dam bodies are arranged on the periphery of the red mud storage yard. The clarification tank and the water return tank are arranged outside the red mud pile yard, the partition dam is arranged between the clarification tank and the water return tank and provided with an overflow port so that the clarification tank can be communicated with the water return tank, the lifting pump is installed in the water return tank and connected with the water delivery main pipe, the water delivery branch pipes are connected with the water delivery main pipe, and the spray heads and the valves are installed on the water delivery branch pipes. The drainage vertical shaft is arranged in the red mud storage yard and is lower than a dam body around the red mud storage yard, the drainage vertical shaft is communicated with the clarification tank through a drainage pipe, and the drainage pipe slopes towards the clarification tank. The dust falling device is simple in structure, dust falling is achieved through spraying of the sprayers, and water circulation is achieved through the drainage vertical shaft and the drainage pipe.

Description

Technical Field

[0001] The utility model relates to the field of dust reduction systems, in particular to a dust reduction system for a flat-land red mud dump using a filter cake method. Background Art

[0002] Currently, most domestic alumina refineries use the filter cake method for storing red mud. This involves filtering the red mud slurry through a filter to create a filter cake with a moisture content below the liquid limit. The filter cake is then transported to the red mud storage site by belt conveyor or truck, where it is spread, aired, and compacted. Red mud particles primarily consist of silt and clay. During the storage process, especially during airing and compaction, dry and windy weather can cause dust to drift from the surface of the red mud storage site, carrying it to the surrounding area and polluting the surrounding environment. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides a dust reduction system for a filter cake method flat-land red mud dump, which aims to solve the problem of red mud dust generated during the storage process of red mud, achieve effective dust reduction and reduce the consumption of clean water in the plant area.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dust reduction system for a flat-land red mud dump using a filter cake method, the dust reduction system comprising a red mud dump, a nozzle, a valve, a water supply main pipe, a water supply branch pipe, a drainage shaft, a drainage pipe, a clarifier, a return water tank, a lifting pump and a dividing dam, the red mud dump being high on the four sides and low in the middle, and surrounded by a dam body, the clarifier and the return water tank being arranged outside the red mud dump, the dividing dam being arranged between the clarifier and the return water tank and being provided with an overflow port to connect the clarifier and the return water tank, the lifting pump being installed in the return water tank and connected to the water supply main pipe, the water supply branch pipe being multiple and connected to the water supply main pipe, the nozzle and the valve being installed on the water supply branch pipe, the drainage shaft being arranged in the red mud dump and lower than the dam body around the red mud dump, the drainage shaft being connected to the clarifier through a drainage pipe, and the drainage pipe being sloped toward the clarifier.

[0005] The water delivery main pipe is provided with an annular section and is arranged around the dam body, and the water delivery branch pipe is connected to the annular section of the water delivery main pipe.

[0006] The diameter of the water supply main pipe is DN150, and the diameter of the water supply branch pipe is DN15.

[0007] The drainage shaft and drainage pipe are reinforced concrete structures, the diameter of the drainage shaft is 3.0m, and the diameter of the drainage pipe is 2.0m.

[0008] The nozzle is a spray type nozzle.

[0009] The lifting pump is an alkali corrosion-resistant submersible pump.

[0010] The beneficial effects of the utility model are as follows: the dust reduction system designed for the flat-land red mud dump based on the filter cake method has a simple structure, and effectively solves the problem of red mud dust in the red mud dump through the sprinkler spraying dust reduction. At the same time, the excess spray water enters the drainage shaft along the surface of the dump through the drainage shaft and the drainage pipe, and flows into the clarification tank along the drainage pipe. After clarification in the clarification tank, it flows into the return water tank, thereby absorbing water and spraying again to reach the circulating water, reducing the consumption of clean water in the plant area. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a planar schematic diagram of the utility model;

[0014] In the figure: 1. Nozzle; 2. Valve; 3. Water supply main pipe; 4. Water supply branch pipe; 5. Drainage shaft; 6. Drainage pipe; 7. Clarification tank; 8. Return water tank; 9. Lifting pump; 10. Dividing dam. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0016] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments. Example

[0017] like Figures 1 to 2As shown, the utility model provides a kind of filter cake dry method flat type red mud stockyard's dust fall system, the dust fall system includes red mud stockyard, shower nozzle 1, valve 2, water supply main pipe 3, water supply branch pipe 4, drainage shaft 5, drain pipe 6, clarifier 7, backwater pool 8, booster pump 9 and partition dam 10, the red mud stockyard is high in the middle of four around low, and the dam body is around the red mud stockyard, the clarifier 7 and backwater pool 8 are arranged outside red mud stockyard, partition dam 10 is arranged between clarifier 7 and backwater pool 8 and is equipped with overflow port to make clarifier 7 and backwater pool 8 communicate, the booster pump 9 is installed in backwater pool 8 and is connected with water supply main pipe 3, the water supply branch pipe 4 is several and is connected with water supply main pipe 3, the shower nozzle 1 and valve 2 are installed on water supply branch pipe 4, the drainage shaft 5 is arranged in red mud stockyard and is lower than dam body around red mud stockyard, and drainage shaft 5 is communicated with clarifier 7 by drain pipe 6, and the drain pipe 6 is sloped to clarifier 7.

[0018] Specifically, the water supply main pipe 3 is provided with an annular section and is arranged around the dam body, the water supply branch pipe 4 is connected with the annular section of the water supply main pipe 3, the pipe diameter of the water supply main pipe 3 is DN150, and the pipe diameter of the water supply branch pipe 4 is DN15. The drainage shaft 5 and the drain pipe 6 are of reinforced concrete structure, the pipe diameter of the drainage shaft 5 is 3.0m, and the pipe diameter of the drain pipe 6 is 2.0m. The shower nozzle 1 is a spray type shower nozzle, and the booster pump 9 is an alkali corrosion resistant submersible pump.

[0019] The dust fall system extracts the collected water in the backwater pool 8 by the booster pump 9, transports the water to the annular section of the water supply main pipe 3 on the dam top of the dam body by the water supply main pipe 3, and sprays the water by the shower nozzle 1 on the water supply branch pipe 4 to ensure that the surface of the red mud has a certain humidity, so that the water consumption is small and the water spraying is uniform by using the spray type shower nozzle; in order to avoid excessive spraying, the valve 2 can be arranged to control the spraying area and the spraying time; since the stockyard always maintains high in the middle of four around low and is sloped to the drainage shaft 5 in the running process, the excessive sprayed water enters the drainage shaft 5 along the surface of the stockyard, and then flows back to the clarifier 7 again through the drain pipe 6, so that the water is recycled, and the consumption of clean water in the factory area is reduced.

[0020] In addition to the above preferred embodiments, the utility model has other implementation manners, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the utility model belong to the range of the utility model claimed.

Claims

1. A dust suppression system for a flat-land red mud dump using a filter cake method, characterized in that: The dust suppression system comprises a red mud dump, a nozzle (1), a valve (2), a water main pipe (3), a water branch pipe (4), a drainage shaft (5), a drainage pipe (6), a clarifier (7), a return water tank (8), a lifting pump (9) and a separation dam (10). The red mud dump is high on the periphery and low in the middle. The red mud dump is surrounded by a dam body. The clarifier (7) and the return water tank (8) are arranged outside the red mud dump. The separation dam (10) is arranged between the clarifier (7) and the return water tank (8) and is provided with an overflow port to connect the clarifier (7) and the return water tank (8). The lifting pump (9) It is installed in the return water pool (8) and connected to the water main pipe (3). The water branch pipes (4) are multiple and connected to the water main pipe (3). The nozzle (1) and the valve (2) are installed on the water branch pipe (4). The drainage shaft (5) is set in the red mud dump and is lower than the dam body around the red mud dump. The drainage shaft (5) is connected to the clarification tank (7) through a drainage pipe (6). The drainage pipe (6) slopes toward the clarification tank (7). The water main pipe (3) is provided with an annular section and is arranged around the dam body. The water branch pipe (4) is connected to the annular section of the water main pipe (3).

2. The dust suppression system for a flat-land red mud dump using a filter cake method according to claim 1, characterized in that: The diameter of the water supply main pipe (3) is DN150, and the diameter of the water supply branch pipe (4) is DN15.

3. The dust suppression system for a flat-land red mud dump using a filter cake method according to claim 1, characterized in that: The drainage shaft (5) and the drainage pipe (6) are reinforced concrete structures. The diameter of the drainage shaft (5) is 3.0 m, and the diameter of the drainage pipe (6) is 2.0 m.

4. The dust suppression system for a flat-land red mud dump using a filter cake method according to claim 1, characterized in that: The nozzle (1) is a spray type nozzle.

5. The dust suppression system for a flat-land red mud dump using a filter cake method according to claim 1, characterized in that: The lifting pump (9) is an alkali corrosion-resistant submersible pump.

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