Automatic deslagging device of zinc smelting concentration tank

Abstract

The utility model 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 the developed concentration tank automation equipment, the frequency of underflow deslagging faults of the concentration tank is greatly reduced, the continuous smoothness of a production system is ensured, the damage of an underflow pump is avoided, the consumption of a deslagging valve is reduced, and automatic deslagging is realized, so that the labor intensity of staff is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydrometallurgy equipment, and particularly relates to an automatic slag discharging device of a zinc smelting thickener. BACKGROUND

[0002] In a zinc smelting production process, after the calcine leaching slurry is treated by a thickener, the clarified liquid is collected by overflow, and the slurry is discharged by a underflow pump. The thickener is a key equipment, and in order to ensure its stable operation, the underflow is transported according to the principle of "small amount and multiple times". The staff must operate the manual valve multiple times, which is labor-intensive. Due to the difference in comprehensive quality of the staff and frequent operation, there are situations such as untimely operation and the valve not being closed in place, which can easily cause faults such as shutdown of the thickener, pipe blockage, damage of the underflow pump and unstable process control. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the technical problem to be solved by the application is to provide an automatic slag discharging device of a zinc smelting thickener, which can realize the convenience of connection and disassembly between the pipe seat and the guide pipe.

[0004] In order to solve the above problems, the application provides an automatic slag discharging device of a zinc smelting thickener, which at least comprises: a thickener, a thickener, an overflow tank, a liquid inlet pipe and a liquid outlet pipe.

[0005] The liquid inlet pipe is connected to the thickener, the thickener is arranged in the thickener, an overflow port is formed in the upper part of the thickener, the overflow port is used for connecting the overflow tank, a slag discharge valve and an underflow pump are arranged at the bottom of the thickener, and an overflow valve and an overflow pump are connected to the bottom of the overflow tank.

[0006] Further, the thickener and the overflow tank are respectively provided with liquid level meters, the thickener is connected to a density measuring instrument and a flow meter, and the density measuring instrument is arranged at the bottom of the thickener.

[0007] Further, the automatic slag discharging device further comprises a control device.

[0008] The control device is in communication connection with the flow meter, the liquid level meter and the density measuring instrument.

[0009] Further, the thickener is arranged at the center position of the top of the thickener.

[0010] Further, the control device is in communication connection with the slag discharge valve and the underflow pump.

[0011] Further, the control device is in communication connection with the overflow valve and the overflow pump.

[0012] Further, the bottom of the thickener is provided with a stirring device, and the stirring device is connected to the thickener.

[0013] Furthermore, the upper part of the concentration tank has an overflow port that is connected to the overflow tank through a drain pipe.

[0014] Furthermore, the overflow trough is connected to the liquid outlet pipe.

[0015] Furthermore, the stirring device is located 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 measuring instrument.

[0016] Beneficial effects

[0017] This invention, through the development of automated equipment for thickening tanks, significantly reduces the frequency of underflow slag discharge failures, ensuring continuous and smooth production. By automatically controlling and detecting underflow slag discharge, it automatically stops the pump, preventing pump damage caused by dry running. By controlling the start and stop times of the pumps and valves, it avoids valve damage and pipeline transport failures caused by misalignment of pump and valve timing. This reduces employee workload and improves production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automatic slag discharge device for a zinc smelting concentration tank according to an embodiment of this application.

[0019] The attached diagram is labeled as follows: 1. Thickening tank; 2. Thickener; 3. Overflow tank; 4. Overflow valve; 5. Slag discharge valve; 6. Overflow pump; 7. Underflow pump; 8. Level gauge; 9. Flow meter; 10. Density meter; 11. Stirring; 12. Inlet pipe; 13. Outlet pipe. Detailed Implementation

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] See also Figure 1 As shown in the embodiments of this application, an automatic slag discharge device for a zinc smelting concentration tank includes at least: a concentration tank 1, a thickener 2, an overflow tank 3, an inlet pipe 12, and an outlet pipe 13.

[0025] The inlet pipe 12 is connected to the thickener 2, which is located inside the concentration tank 1. The concentration tank 1 has an overflow port at its upper part, which is used to connect to the overflow tank 3. The overflow port is seamlessly connected to the overflow tank 3, which enables the supernatant to be guided from the concentration tank 1 into the overflow tank 3, avoiding the overflow of the supernatant and ensuring the stability of the subsequent processing flow. The bottom of the concentration tank 1 is equipped with a slag discharge valve 5 and a bottom flow pump 7. The bottom of the overflow tank 3 is connected to an overflow valve 4 and an overflow pump 6. In this application, by integrating the overflow valve 4 and the overflow pump 6 at the bottom of the overflow tank 3, the recovery and reuse of the supernatant is made more flexible and efficient. The recovery rate of the supernatant can be adjusted according to actual production needs to ensure maximum overflow efficiency.

[0026] In this embodiment, the upper part of the concentration tank 1 has an overflow port that is connected to the overflow tank 3 through a drain pipe; the overflow tank 3 is connected to the outlet pipe 13.

[0027] In one feasible implementation, the thickening tank 1 and the overflow tank 3 are respectively equipped with level gauges 8, and the thickener 2 is connected to a density meter 10 and a flow meter 9 to monitor the changes in the liquid level in the tank in real time, providing accurate data support for automated control; and the density meter 10 is set at the bottom of the thickening tank 1 to directly measure the density of the slurry at the bottom of the overflow tank 3, ensuring the accuracy and real-time nature of the data.

[0028] In this embodiment, the stirring device 11 is located 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 that of the density measuring instrument 10, so that it can directly measure the density of the slurry at the bottom of the concentration tank 1, ensuring the accuracy and real-time nature of the data.

[0029] In one feasible implementation, the thickener 2 is positioned at the top center of the concentration tank 1. In this application, positioning the thickener 2 at the top center of the concentration tank 1 ensures that the liquid entering the concentration tank 1, such as the slurry in the zinc smelting process, is evenly distributed below the thickener 2, which is beneficial for the natural settling of particles during solid-liquid separation. The design of positioning the thickener at the center of the concentration tank 1 reduces turbulence and eddies during liquid flow, allowing solid particles to settle more effectively at the bottom of the tank, improving settling efficiency. Because the thickener 2 is positioned at the top center of the concentration tank 1, its working area is relatively concentrated, allowing for better control of the solid-liquid separation process. This helps reduce the number of solid particles entrained in the supernatant, improving the cleanliness and purity of the supernatant and providing higher quality raw materials for subsequent processing steps. Furthermore, placing the thickener 2 at the top center maximizes the use of space within the concentration tank 1, reducing unnecessary space waste. This is particularly important for plants arranging complex smelting equipment in limited spaces, helping to improve overall production efficiency and equipment utilization.

[0030] In one 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 this application significantly enhances the mixing effect in the concentration tank 1, allowing solid particles to be more evenly dispersed in the liquid, which is beneficial for accelerating particle sedimentation and solid-liquid separation. At the same time, its cooperative work with the thickener 2 further improves the overall separation efficiency.

[0031] In this embodiment, the stirring device 11 is located at the bottom of the thickening tank 1, and the height of the stirring device 11 at the bottom of the thickening tank 1 is less than the height of the density measuring instrument 10. In this application, the installation height of the stirring device 11 is set below the density measuring instrument 10, ensuring that the density measuring instrument can accurately and without interference measure the true density of the slurry at the bottom of the thickening tank 1. This design avoids the influence of eddies or bubbles generated during stirring on the density measurement, improving the accuracy and reliability of the measurement results.

[0032] In one feasible implementation, the automatic slag discharge device further includes a control device; the control device is communicatively connected to the flow meter 9, the level gauge 8 and the density meter 10 respectively.

[0033] In this embodiment, the flow rate of material entering the thickening tank 1 is monitored in real time by the flow meter 9, ensuring that the system can adjust the slag discharge strategy in a timely manner according to the flow rate changes, avoiding overload or underload, and ensuring processing efficiency and stability. The level gauge 8 is communicatively connected to the control device, enabling real-time and accurate measurement of the liquid level in the thickening tank 1. This allows for automatic adjustment of the slag discharge or feeding speed when the liquid level is too high or too low, preventing overflow or drying out and protecting equipment safety. This application uses a density meter 10 to measure the material density, providing precise control data for the control device, improving slag discharge efficiency and product quality.

[0034] In one feasible implementation, the control device is communicatively connected to the slag discharge valve 5 and the underflow pump 7, respectively.

[0035] In one feasible implementation, the control device is communicatively connected to the overflow valve 4 and the overflow pump 6, respectively.

[0036] In one feasible implementation, 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.

[0037] In this embodiment, when the automatic slag discharge device is first used, the slurry to be concentrated is first steadily 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. Then, the treated slurry is released into the thickening tank 1. During this process, the solid particles in the slurry gradually settle to the bottom of the thickening tank 1, forming an underflow, while the supernatant flows naturally into the overflow tank 3 through the overflow port at the top of the thickening tank 1.

[0038] 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 a preset slag discharge start-up threshold, the slag discharge start-up threshold is, for example, 1.80–2.00 g / cm³. 3 When the concentration reaches a sufficiently high level, a signal is sent to the control device. Upon receiving the signal, the control device determines that the underflow concentration has reached a sufficiently high level. The control device first performs a delay (8-12 seconds) to ensure that all components within the system are in a stable state and to allow sufficient time for operators to conduct safety checks. After the delay, the control device controls the slag discharge valve 5 to open and starts the underflow pump 7. The underflow pump 7 draws the high-density underflow from the bottom of the thickening tank 1 and transports it to the subsequent processing unit through pipelines. During the slag discharge process, the flow meter 9 and the density meter 10 continuously monitor the flow rate and density changes of the underflow. When the underflow density drops to a preset slag discharge end threshold, the slag discharge end threshold is set at 1.50-1.70 g / cm³. 3When the slag discharge is nearing completion, the control system stops the slag discharge operation. After slag discharge is complete, the control device first stops the underflow pump 7, and then performs a delay, 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 closure. After the delay, the slag discharge valve 5 automatically closes. After the slag discharge procedure is completed, the control device re-enters the timing state, waits for the next slag discharge command, and begins the next slag discharge cycle.

[0039] In this embodiment, the control device includes an automatic start-stop program. A level gauge 8 is installed in the overflow tank 3 to monitor the liquid level in the overflow tank 3 in real time. When the liquid level rises to a preset high liquid level threshold (75-85% of the overflow tank's volume), the control device automatically determines that the discharge rate needs to be increased to prevent overflow. Once the liquid level reaches the high liquid level threshold, the control device increases the power of the overflow pump 6 to accelerate the discharge speed, ensuring that the liquid level in the overflow tank 3 drops rapidly. Simultaneously, the overflow valve 4 remains open to allow more supernatant to flow out. Conversely, when the liquid level drops to a preset low liquid level threshold (45-55% of the overflow tank's volume), to avoid pump idling and energy waste, the control device automatically reduces the power of the overflow pump 6 to decrease the discharge rate. However, the overflow valve 4 remains open to maintain a certain flow rate of supernatant.

[0040] In this embodiment, throughout 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 the actual situation to ensure that the overflow tank is always kept in the best working state.

[0041] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0042] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. An automatic slag discharge device for a zinc smelting concentration tank, characterized in that, At least including: Concentrator (1), thickener (2), overflow tank (3), inlet pipe (12), outlet pipe (13); The liquid inlet pipe (12) is connected to the thickener (2), which is located in the thickening tank (1). The thickening tank (1) has an overflow port at the top, which is used to connect to the overflow tank (3). The thickening tank (1) is equipped with a slag discharge valve (5) and a bottom flow pump (7) at the bottom. The overflow tank (3) is connected to an overflow valve (4) and an overflow pump (6) at the bottom.

2. The automatic slag discharge device according to claim 1, characterized in that, The concentration tank (1) and the overflow tank (3) are respectively equipped with level gauges (8), the thickener (2) is connected to a density measuring instrument (10) and a flow meter (9), and the density measuring instrument (10) is located 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 level gauge (8), and the density measuring instrument (10), respectively.

4. The automatic slag discharge device according to claim 2, characterized in that, The thickener (2) is located 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).

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

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

8. The automatic slag discharge device according to claim 7, characterized in that, The concentration tank (1) has an overflow port at the top, which is connected to the overflow tank (3) through 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 claim 7, characterized in that, The stirring device (11) is located 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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