Automatic deslagging device of zinc smelting concentration tank

Abstract

The invention provides an automatic deslagging device of a zinc smelting concentration tank. The automatic deslagging device at least comprises a concentration tank, a thickener, an overflow tank, a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected with the thickener, the thickener is arranged in the concentration tank, an overflow port is formed in the upper part of the concentration tank and is used for being communicated with the overflow tank, and the overflow port is formed in the upper part of the concentration tank and is communicated with the overflow tank through a liquid discharge pipe; a deslagging valve and an underflow pump are arranged at the bottom of the concentration tank, and an overflow valve and an overflow pump are connected to the bottom of the overflow tank. Through developed concentration tank automation equipment, the frequency of underflow deslagging faults of the concentration tank is greatly reduced, continuous smoothness of a production system is guaranteed, damage to an underflow pump is avoided, consumption of a deslagging valve is reduced, automatic deslagging is achieved, the labor intensity of workers is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of hydrometallurgical equipment, and in particular relates to an automatic slag discharge device for a zinc smelting concentration tank. Background Art

[0002] In the zinc smelting production process, after the roasted sand leaching slurry is treated by the thickening tank, the clarified liquid is collected through the overflow, and the slag slurry is discharged through the underflow pump. Among them, the thickening tank is a key equipment. To ensure its stable operation, its underflow is transported according to the principle of "small amounts and multiple times". Employees must go to the site many times to operate manual valves, which is labor-intensive. Due to the differences in the comprehensive quality of employees and frequent operations, there will be situations such as untimely operation and valves not being closed in place, which is easy to cause thickener shutdown, pipeline blockage, underflow pump damage, unstable process control and other faults. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present application is to provide an automatic slag discharge device for a zinc smelting concentration tank, which can realize the convenience of connection and disassembly between the tube seat and the guide tube.

[0004] In order to solve the above problems, the present application provides an automatic slag discharge device for a zinc smelting concentration tank, which at least comprises: a concentration tank, a thickener, an overflow tank, a liquid inlet pipe, and a liquid outlet pipe; The liquid inlet pipe is connected to the thickener, and the thickener is arranged in the concentrating tank. An overflow port is opened on the upper part of the concentrating tank, and the overflow port is used to connect to the overflow tank. A slag discharge valve and an underflow pump are arranged at the bottom of the concentrating tank, and an overflow valve and an overflow pump are connected to the bottom of the overflow tank.

[0005] Furthermore, the concentration tank and the overflow tank are respectively provided with liquid level meters, the thickener is connected to a density meter and a flow meter, and the density meter is arranged at the bottom of the concentration tank.

[0006] Furthermore, the automatic slag discharge device also includes a control device; The control device is communicatively connected with the flow meter, the liquid level meter and the density meter respectively.

[0007] Furthermore, the thickener is arranged at the top center of the thickening tank.

[0008] Furthermore, the control device is communicatively connected with the slag discharge valve and the underflow pump respectively.

[0009] Furthermore, the control device is communicatively connected with the overflow valve and the overflow pump respectively.

[0010] Furthermore, a stirring device is provided at the bottom of the concentration tank, and the stirring device is connected to the thickener.

[0011] Furthermore, an overflow port is opened at the upper portion of the concentration tank and is connected to the overflow tank through a drain pipe.

[0012] Furthermore, the overflow trough is connected to the liquid outlet pipe.

[0013] Furthermore, the stirring device is arranged at the bottom of the concentration tank, and the height of the stirring device at the bottom of the concentration tank is less than the height of the density meter.

[0014] Beneficial Effects The invention has developed a concentrator automation device, which greatly reduces the number of concentrator bottom flow discharge failures, ensures the continuous smoothness of the production system, and automatically stops the pump by automatically controlling the bottom flow discharge situation, thereby avoiding damage to the pump body caused by the idling of the bottom flow pump. By controlling the start and stop time of the pump and valve, valve damage and pipeline transportation failure caused by the lack of timing between the pump and valve are avoided. The labor intensity of employees is reduced and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the automatic slag discharge device of the zinc smelting concentration tank according to an embodiment of the present application.

[0016] The reference numerals are as follows: 1. concentration tank; 2. thickener; 3. overflow tank; 4. overflow valve; 5. slag discharge valve; 6. overflow pump; 7. underflow pump; 8. liquid level meter; 9. flow meter; 10. density meter; 11. stirring; 12. liquid inlet pipe; 13. liquid outlet pipe. DETAILED DESCRIPTION

[0017] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0019] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] See also Figure 1 As shown, according to an embodiment of the present application, an automatic slag discharge device for a zinc smelting concentration tank at least comprises: a concentration tank 1, a thickener 2, an overflow tank 3, a liquid inlet pipe 12, and a liquid outlet pipe 13; The liquid inlet pipe 12 is connected to the thickener 2, and the thickener 2 is arranged in the thickening tank 1. An overflow port is opened on the upper part of the thickening tank 1, and the overflow port is used to connect to the overflow tank 3, and the overflow port is seamlessly connected to the overflow tank 3, so that the supernatant is guided from the thickening tank 1 to the overflow tank 3, avoiding the overflow of the supernatant and determining the stability of the subsequent treatment process; a slag discharge valve 5 and an underflow pump 7 are provided at the bottom of the thickening tank 1, and an overflow valve 4 and an overflow pump 6 are connected to the bottom of the overflow tank 3; in the present application, the overflow valve 4 and the overflow pump 6 are integrated at the bottom of the overflow tank 3 to work together, so that the recovery and reuse of the supernatant are more flexible and efficient, and the recovery rate of the supernatant can be adjusted according to actual production needs to ensure that the overflow efficiency is maximized.

[0022] In this embodiment, an overflow port is opened at the top of the concentration tank 1 and is connected to the overflow tank 3 through a drain pipe; the overflow tank 3 is connected to the liquid outlet pipe 13 .

[0023] In a feasible implementation manner, the concentration tank 1 and the overflow tank 3 are respectively provided with a liquid level meter 8, and the thickener 2 is connected to a density meter 10 and a flow meter 9 to monitor the liquid level changes in the tank in real time and provide accurate data support for automatic control; and the density meter 10 is arranged at the bottom of the concentration tank 1; the density of the slurry at the bottom of the overflow tank 3 is directly measured to ensure the accuracy and real-time nature of the data.

[0024] In this embodiment, the stirring device 11 is disposed at the bottom of the concentrating tank 1, and the height of the stirring device 11 at the bottom of the concentrating tank 1 is less than that of the density meter 10, so that it can directly measure the density of the slurry at the bottom of the concentrating tank 1 to ensure the accuracy and real-time performance of the data.

[0025] In a feasible embodiment, the thickener 2 is arranged at the top center of the thickener 1; in the present application, the thickener 2 is arranged at the top center of the thickener 1, which can ensure that the liquid entering the thickener 1, such as the slurry in the zinc smelting process, is evenly distributed below the thickener 2, which is conducive to the natural sedimentation of particles during the solid-liquid separation process. The design of the thickener arranged at the center of the thickener 1 in the present application reduces the turbulence and eddy current during the flow of the liquid, so that the solid particles can be more effectively deposited at the bottom of the tank, thereby improving the sedimentation efficiency. Since the thickener 2 in the present application is arranged at the top center of the thickener 1, its working area is relatively concentrated, and the solid-liquid separation process can be better controlled. This helps to reduce the number of solid particles entrained in the supernatant, improve the cleanliness and purity of the supernatant, and provide higher quality raw materials for subsequent processing steps. In addition, placing the thickener 2 at the top center can maximize the use of the space in the thickener 1 and reduce unnecessary space waste. This is particularly important for factories that arrange complex smelting equipment in a limited space, and helps to improve overall production efficiency and equipment utilization.

[0026] In a feasible embodiment, a stirring device 11 is provided at the bottom of the concentration tank 1, and the stirring device 11 is connected to the thickener 2. The introduction of the stirring device 11 in the present application significantly enhances the mixing effect in the concentration tank 1, so that the solid particles can be more evenly dispersed in the liquid, which is conducive to accelerating the sedimentation of the particles and the solid-liquid separation. At the same time, the coordinated work of the stirring device 11 and the thickener 2 further improves the overall separation efficiency.

[0027] In this embodiment, the stirring device 11 is arranged at the bottom of the concentrating tank 1, and the height of the stirring device 11 at the bottom of the concentrating tank 1 is less than the height of the density meter 10; in this application, the installation height of the stirring device 11 is set below the density meter 10, ensuring that the density meter can accurately and without interference measure the true density of the slurry at the bottom of the concentrating tank 1. This design avoids the influence of eddy currents or bubbles generated during the stirring process on the density measurement, and improves the accuracy and reliability of the measurement results.

[0028] In a feasible implementation manner, the automatic slag discharge device further includes a control device; the control device is communicatively connected with the flow meter 9, the liquid level meter 8 and the density meter 10 respectively.

[0029] In this embodiment, the material flow rate entering the concentration tank 1 is monitored in real time by the flow meter 9, which ensures that the system can adjust the slag discharge strategy in time according to the flow rate change, avoid overload or underload, and ensure processing efficiency and stability. The liquid level meter 8 is connected to the control device in communication; the liquid level in the concentration tank 1 is accurately measured in real time to automatically adjust the slag discharge or feed speed when the liquid level is too high or too low, to prevent overflow or drying, and protect the safety of the equipment. The present application measures the material density by the density meter 10, providing an accurate control basis for the control device, improving the slag discharge efficiency and product quality.

[0030] In a feasible implementation manner, the control device is communicatively connected with the slag discharge valve 5 and the underflow pump 7 respectively.

[0031] In a feasible implementation manner, the control device is communicatively connected to the overflow valve 4 and the overflow pump 6 respectively.

[0032] In a feasible implementation manner, a stirring device 11 is provided at the bottom of the concentration tank 1 , and the stirring device 11 is connected to the thickener 2 .

[0033] In this embodiment, when the present application starts to use the automatic slag discharge device, first, the slurry to be concentrated is smoothly and continuously transported to the thickener 2 through the liquid inlet pipe 12. The thickener 2 uses its internal structure to perform preliminary sedimentation and concentration treatment on the slurry, and then releases the treated slurry into the thickener tank 1. During this process, the solid particles in the slurry gradually settle to the bottom of the thickener tank 1 to form a bottom flow, and the supernatant naturally flows into the overflow tank 3 through the overflow port at the top of the thickener tank 1.

[0034] As the concentration process proceeds, the density meter 10 monitors the density change at the bottom of the concentration tank 1 in real time. When the underflow density reaches the preset slag discharge start threshold, the slag discharge start threshold is: for example, 1.80-2.00 g / cm³, a signal is sent to the control device. After receiving the signal, the control device determines that the underflow has reached a sufficiently high concentration. The control device first performs a delay (8-12 seconds) to ensure that the components inside the system are in a stable state and to reserve enough time for the operator to perform a safety check. After the delay ends, the control device controls the slag discharge valve 5 to open and starts the underflow pump 7. The underflow pump 7 extracts the high-density underflow from the bottom of the concentration tank 1 and transports it to the subsequent processing unit through a pipeline. During the slag discharge process, the flowmeter 9 and the density meter 10 continuously monitor the flow and density changes of the underflow. When the underflow density drops to the preset slag discharge end threshold, the slag discharge end threshold is: 1.50-1.70 g / cm³, it indicates that the slag discharge is nearly completed, and the control system controls the slag discharge operation to stop. After the slag discharge is completed, the control device first controls to stop the underflow pump 7, and then performs a delay again, for example: 8 to 12 seconds, to ensure that the residual material in the pipeline is completely discharged and to avoid system pressure fluctuations caused by sudden valve closing. After the delay is over, the slag discharge valve 5 is automatically closed. After the slag discharge program is completed, the control device re-enters the timing state, waits for the arrival of the next slag discharge instruction, and starts the next round of slag discharge cycle.

[0035] In this embodiment, the control device includes an automatic start-stop program, and a liquid level meter 8 is provided in the overflow tank 3 for real-time monitoring of the liquid level height in the overflow tank 3. When the liquid level rises to a preset high liquid level threshold, which is 75-85% of the volume of the overflow tank, the control device automatically determines that the discharge volume needs to be increased to prevent overflow. Once the liquid level reaches the high liquid level threshold, the control device controls to increase the power of the overflow pump 6, speeds up the discharge speed, and ensures that the liquid level in the overflow tank 3 drops rapidly. At the same time, the overflow valve 4 is kept in an open state to allow more supernatant to flow out. On the contrary, when the liquid level drops to a preset low liquid level threshold, which is 45-55% of the volume of the overflow tank, in order to avoid idling of the pump and waste of energy, the control device will automatically reduce the power of the overflow pump 6 and reduce the discharge volume. However, at this time, the overflow valve 4 still needs to be kept open to maintain a certain flow rate of supernatant.

[0036] In this embodiment, during the entire production process, the control device continuously monitors the liquid level changes of the overflow tank 3, and dynamically adjusts the power and discharge volume of the overflow pump 6 according to actual conditions to ensure that the overflow tank always remains in the best working state.

[0037] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0038] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. An automatic slag discharge device for a zinc smelting concentration tank, characterized in that: The device at least comprises: a concentration tank (1), a thickener (2), an overflow tank (3), a liquid inlet pipe (12), and a liquid outlet pipe (13); The liquid inlet pipe (12) is connected to the thickener (2). The thickener (2) is arranged in the thickener tank (1). An overflow port is provided at the top of the thickener tank (1). The overflow port is used to connect to the overflow tank (3). A slag discharge valve (5) and an underflow pump (7) are provided at the bottom of the thickener tank (1). An overflow valve (4) and an overflow pump (6) are connected to the bottom of the overflow tank (3).

2. The automatic slag discharge device according to claim 1, characterized in that: The concentration tank (1) and the overflow tank (3) are respectively provided with a liquid level meter (8), the thickener (2) is connected to a density meter (10) and a flow meter (9), and the density meter (10) is arranged at the bottom of the concentration tank (1).

3. The automatic slag discharge device according to claim 2, characterized in that: The automatic slag discharge device also includes a control device; The control device is communicatively connected to the flow meter (9), the liquid level meter (8) and the density meter (10) respectively.

4. The automatic slag discharge device according to claim 1, characterized in that: The thickener (2) is arranged at the top center of the thickening tank (1).

5. The automatic slag discharge device according to claim 3, characterized in that: The control device is communicatively connected to the slag discharge valve (5) and the underflow pump (7) respectively.

6. The automatic slag discharge device according to claim 5, characterized in that: The control device is respectively connected to the overflow valve (4) and the overflow pump (6) for communication.

7. The automatic slag discharge device according to claim 4, characterized in that: A stirring device (11) is provided at the bottom of the concentration tank (1), and the stirring device (11) is connected to the thickener (2).

8. The automatic slag discharge device according to claim 7, characterized in that: An overflow port is provided at the top of the concentration tank (1) and is connected to the overflow tank (3) via a drain pipe.

9. The automatic slag discharge device according to claim 1, characterized in that: The overflow trough (3) is connected to the liquid outlet pipe (13).

10. The automatic slag discharge device according to any one of claims 1 to 9, characterized in that: The stirring device (11) is disposed at the bottom of the concentration tank (1), and the height of the stirring device (11) at the bottom of the concentration tank (1) is less than the height of the density measuring instrument (10).

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