Device for automatically controlling liquid level of atmospheric pressure leaching tank by utilizing lifting air

Abstract

The utility model provides a device for automatically controlling the liquid level of a normal pressure leaching tank by utilizing lifting air, which comprises a leaching tank body, a flow guide pipe is arranged in the leaching tank body, the leaching tank body is provided with an ore pulp outlet, the top end of the flow guide pipe is connected with the ore pulp outlet, a lifting air pipe is arranged in the flow guide pipe, and the lifting air pipe is connected with the top end of the flow guide pipe. The bottom end of the lifting air pipe forms an air outlet end, the top end of the lifting air pipe penetrates out of the flow guide pipe and the top of the leaching tank body, an air inlet valve is arranged on the lifting air pipe, the leaching tank body is provided with a radar liquid level meter, the radar liquid level meter is connected with a controller, and the controller is connected with the air inlet valve. The radar liquid level meter is arranged on the leaching tank body, the liquid level in the leaching tank body is detected in real time, when the liquid level exceeds a set value, ore pulp on the lower portion of the leaching tank body is discharged through the flow guide pipe by means of air sprayed out of the lifting air pipe, the liquid level in the leaching tank body is positioned, spraying accidents are prevented, and the leaching efficiency is improved. And compared with a traditional mode, manpower is greatly saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of leaching equipment, and relates to a device for automatically controlling the liquid level of an atmospheric leaching tank by using lifting air. Background Technique

[0002] The pressure oxygen wet refining of nickel and cobalt sulfide usually adopts a two-stage atmospheric pressure + two-stage pressure leaching process. During the atmospheric leaching process, due to changes in the pulp density, flow rate, etc., and a large amount of foam generated during the reaction process, the pulp liquid level in the atmospheric leaching tank changes, resulting in the pulp liquid level rising beyond the set value. Since the change in the pulp liquid level easily leads to splashing and overflowing of the tank, it causes many adverse factors to the safe, clean and civilized production. Therefore, it is necessary to control the liquid level in the atmospheric leaching tank within a certain range. Content of the Utility Model

[0003] The purpose of the utility model is to provide a device for automatically controlling the liquid level of an atmospheric leaching tank by using lifting air in view of the problems existing in the prior art.

[0004] For this reason, the utility model adopts the following technical solutions:

[0005] A device for automatically controlling the liquid level of an atmospheric leaching tank by using lifting air includes a leaching tank body. A diversion pipe is arranged in the leaching tank body. The bottom end of the diversion pipe is in a sealed structure. A pulp inlet is arranged at the bottom end of the side wall of the diversion pipe. The leaching tank body is provided with a pulp outlet. The top end of the diversion pipe is connected to the pulp outlet. A lifting air pipe is arranged in the diversion pipe. An inclined lifting air plate is arranged on the side of the bottom end of the diversion pipe away from the pulp inlet. The bottom end of the lifting air pipe is connected with an air outlet pipe which is perpendicular to the lifting air pipe. The air outlet pipe corresponds to the lifting air plate and faces the lifting air plate. The top end of the lifting air pipe passes through the top of the diversion pipe and the leaching tank body. An intake valve is arranged on the lifting air pipe. The leaching tank body is provided with a radar liquid level gauge. The radar liquid level gauge is connected with a controller. The controller is connected with the intake valve.

[0006] Furthermore, a stirring shaft is arranged in the leaching tank body. Stirring blades are arranged at the bottom end of the stirring shaft. The top end of the stirring shaft passes through the top of the leaching tank body. The top end of the stirring shaft is connected with a motor for driving the stirring shaft to rotate.

[0007] Furthermore, the diversion pipe is fixed to the inner wall of the leaching tank body.

[0008] Furthermore, a slurry inlet is arranged on the side wall of the leaching tank body. The slurry inlet corresponds to the pulp outlet.

[0009] The beneficial effects of the present utility model are as follows: A radar level gauge is provided on the leaching tank body to detect the liquid level in the leaching tank body in real time. When the liquid level exceeds the set upper limit, air is ejected through the lifting air pipe to increase the slurry discharge amount of the diversion pipe, maintain the liquid level in the leaching tank body, prevent the occurrence of spraying and overflowing accidents, and greatly save labor compared with the traditional method; The slurry is discharged in the form of upper inlet and lower outlet to maintain the liquid level position, preventing the slurry with insufficient reaction in the upper part of the leaching tank body from being discharged during discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present utility model;

[0011] Figure 2 is Figure 1 a partial enlarged view of part A in

[0012] Figure 3 is a schematic control diagram of the present utility model;

[0013] In the figure, 1 - leaching tank body, 2 - diversion pipe, 3 - slurry inlet, 4 - slurry outlet, 5 - lifting air pipe, 6 - air outlet end, 7 - intake valve, 8 - radar level gauge, 9 - controller, 10 - stirring shaft, 11 - stirring blade, 12 - motor, 13 - slurry inlet, 14 - lifting air plate, 15 - sewage pipe, 16 - sewage valve. SPECIFIC EMBODIMENTS

[0014] The following will describe the present utility model in detail with reference to the drawings:

[0015] As Figures 1-3As shown in the figure, a device for automatically controlling the liquid level of an atmospheric leaching tank by using a lifting air flow includes a leaching tank body 1. A diversion pipe 2 is arranged inside the leaching tank body 1. The diversion pipe 2 is used to discharge the pulp in the leaching tank body 1. The diversion pipe 2 is fixed to the inner wall of the leaching tank body 1. The bottom end of the diversion pipe 2 is of a sealed structure. A pulp inlet 3 is arranged at the bottom end of the side wall of the diversion pipe 2. The pulp inlet 3 is located in the lower part of the leaching tank body 1. The pulp in the leaching tank body 1 can enter the diversion pipe 2 through the pulp inlet 3. A pulp outlet 4 is arranged at the upper part of the side wall of the leaching tank body 1. The top end of the diversion pipe 3 is connected to the pulp outlet 4. The pulp in the diversion pipe 2 can be discharged through the pulp outlet 4. A lifting air pipe 5 is arranged inside the diversion pipe 2. The top end of the lifting air pipe 5 passes through the top of the diversion pipe and the leaching tank body. The lifting air pipe 5 is connected to the public service system pipe network in the workshop. Compressed air can be input into the lifting air pipe 5 through the public service system. The part of the lifting air pipe 5 inside the diversion pipe 2 is arranged vertically. An inclined lifting air plate 14 is arranged on the side of the bottom end of the diversion pipe 2 away from the pulp inlet 3. The bottom end of the lifting air pipe 5 is connected to an air outlet pipe 6 which is arranged perpendicular to the lifting air pipe 5. The air outlet pipe 6 corresponds to the lifting air plate 14 and faces the lifting air plate 14. The lifting air pipe 5 can blow air to the lifting air plate 14 through the air outlet pipe 6. Through the refraction of the lifting air plate 14, the gas blown out by the air outlet pipe 6 is sprayed to the upper part of the diversion pipe 2. An air inlet valve 7 is arranged on the lifting air pipe 5. After the air inlet valve 7 is opened, air can be input into the lifting air pipe 5. A radar level gauge 8 for detecting the liquid level of the pulp in the leaching tank body 1 is arranged on the leaching tank body 1. The radar level gauge 8 is connected to a controller 9. The controller 9 can be a conventional existing PLC or other controllers. The controller 9 is connected to the air inlet valve 7. When the radar level gauge 8 detects that the liquid level in the leaching tank body 1 reaches the set upper limit, the controller 9 can control the air inlet valve 7 to open.

[0016] A vertically arranged stirring shaft 10 is arranged inside the leaching tank body 1. Stirring blades 11 are arranged at the bottom end of the stirring shaft 10. The top end of the stirring shaft 10 passes through the top of the leaching tank body 1. The top end of the stirring shaft 10 is connected to a motor 12 for driving the stirring shaft 10 to rotate. The pulp in the leaching tank body 1 can be stirred by the stirring blades 111 to make the pulp uniform. A pulp inlet 13 is connected to the side wall of the leaching tank body 1. The height of the pulp inlet 13 is higher than that of the pulp outlet 4. Pulp can be added into the leaching tank body 1 through the pulp inlet 13. A sewage discharge pipe 15 is connected to the bottom of the leaching tank body 1. A sewage discharge valve 16 is arranged on the sewage discharge pipe 15.

[0017] The usage method of the present utility model is as follows:

[0018] During use, pulp can be added into the leaching tank body 1 through the pulp inlet 13 for leaching operation. During the leaching operation, the pulp can be stirred by the stirring blades 11 to make the pulp uniform. When the pulp level after leaching reaches the height of the pulp outlet 4, under the action of the liquid level difference, the leached pulp enters the diversion pipe 2 from the pulp inlet 13, and then flows out of the leaching tank body 1 by gravity through the pulp outlet 4. During the leaching process, the radar level gauge 8 can monitor the pulp level in real time and send the pulp level information to the controller 9. When the pulp level exceeds the set upper limit, the controller 9 controls the intake valve 7 to open and supply gas into the lifting air pipe 5. The gas is discharged downward through the air outlet pipe 6 and blows on the lifting air plate 14. Under the refraction action of the lifting air plate 14, the lifting air ejected from the air outlet pipe 6 flows towards the pulp outlet 4. Under the action of the lifting air-liquid-solid three-phase mixing and forward pushing, the density of the pulp entering the diversion pipe 2 rapidly decreases, the buoyancy increases, and the rising and discharging speeds are accelerated, so that the pulp level in the leaching tank body 1 rapidly decreases. When the radar level gauge 8 detects that the pulp in the leaching tank body 1 returns to the normal level, the controller 9 controls the intake valve 7 to close, and the leaching tank body 1 resumes the gravity discharge of the leached pulp.

[0019] In addition, the device adopts the form of upper-in and lower-out to discharge the pulp to maintain the liquid level position and prevent the pulp with insufficient reaction in the upper part of the leaching tank body 1 from being discharged during discharging.

Claims

1. A device for automatically controlling the liquid level of an atmospheric leaching tank by using lifting wind, comprising a leaching tank body (1), characterized in that, A diversion pipe (2) is provided inside the leaching tank body (1). The bottom end of the diversion pipe (2) is of a sealed structure. A pulp inlet (3) is provided at the bottom end of the side wall of the diversion pipe (2). The leaching tank body (1) is provided with a pulp outlet (4). The top end of the diversion pipe (2) is connected to the pulp outlet (4). A lifting air pipe (5) is provided inside the diversion pipe (2). An inclined lifting air plate (14) is provided on the side of the bottom end of the diversion pipe (2) away from the pulp inlet (3). The bottom end of the lifting air pipe (5) is connected to an air outlet pipe (6) which is perpendicular to the lifting air pipe (5). The air outlet pipe (6) corresponds to the lifting air plate (14) and faces the lifting air plate (14). The top end of the lifting air pipe (5) passes through the top of the diversion pipe (2) and the leaching tank body (1). An air inlet valve (7) is provided on the lifting air pipe (5). The leaching tank body (1) is provided with a radar level gauge (8). The radar level gauge (8) is connected to a controller (9). The controller (9) is connected to the air inlet valve (7).

2. The device for automatically controlling the liquid level of an atmospheric leaching tank using lifting wind according to claim 1, wherein, A stirring shaft (10) is provided inside the leaching tank body (1). Stirring blades (11) are provided at the bottom end of the stirring shaft (10). The top end of the stirring shaft (10) passes through the top of the leaching tank body (1). The top end of the stirring shaft (10) is connected to a motor (12) for driving the stirring shaft (10) to rotate.

3. The device for automatically controlling the liquid level of an atmospheric leaching tank using the lifting wind according to claim 1, wherein The diversion pipe (2) is fixed to the inner wall of the leaching tank body (1).

4. The device for automatically controlling the liquid level of an atmospheric leaching tank using lifting air according to claim 1, wherein, A slurry inlet (13) is provided on the side wall of the leaching tank body (1). The slurry inlet (13) is higher than the pulp outlet (4).

5. The device for automatically controlling the liquid level of an atmospheric leaching tank by using lift wind according to claim 1, wherein A sewage discharge pipe (15) is connected to the bottom of the leaching tank body (1). A sewage discharge valve (16) is provided on the sewage discharge pipe (15).

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