A device for high-efficiency purification and filtration of non-ferrous metal hydrometallurgy solution

Abstract

The utility model discloses a non -ferrous metal wet smelting solution high -efficient purification filter's device relates to non -ferrous metal smelting technical field, the device includes at least one filter unit, the filter unit includes airtight storehouse, the airtight storehouse is equipped with filter vane, and the filter vane's liquid outlet pipe is connected to the liquid outlet main pipe, and the liquid inlet pipe is arranged below the liquid outlet main pipe. The utility model method filtering efficiency is high, and energy saving, process does not produce waste gas, and compared with traditional smelting solution filtering mode has not produced waste filter cloth, environmental protection green, intelligent degree is high, and the area is small and so on advantage, can according to production demand design the filter equipment of different flow and intelligent control, and solution purification reaction temperature does not change, and the reaction is stable.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous metal smelting technology, specifically to a device for efficient purification and filtration of non-ferrous metal hydrometallurgical solutions. Background Technology

[0002] In the hydrometallurgical process of non-ferrous metals, the traditional method of liquid-solid separation is to use a filter press. However, filter presses have drawbacks such as slow filtration speed, long processing cycle, high moisture content in the filter cake after filtration, insufficient clarity of the filtrate, easy clogging of filter plates, and rapid wear of components. In addition, filter presses have disadvantages such as high energy consumption and large equipment investment. Most importantly, the high temperature and high pollution exhaust gas emitted during the filtration process creates very poor working conditions, harsh operating environment for personnel, frequent replacement of filter cloth, difficulty in recycling waste filter cloth, and high production costs.

[0003] Therefore, providing a device for efficient purification and filtration of non-ferrous metal hydrometallurgical solutions is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a device for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solutions. The device of this utility model has high filtration efficiency, saves energy, and does not generate waste gas in the process. Compared with traditional smelting solution filtration methods, it has the advantages of not generating waste filter cloth, being environmentally friendly and green, having a high degree of intelligence, and occupying a small area.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solutions, the device comprising at least one filtration unit;

[0007] The filtration unit includes a sealed chamber, in which filter blades are provided. A main outlet pipe is connected to the outlet pipes of the filter blades, and an inlet pipe is located below the main outlet pipe.

[0008] This invention, by placing the inlet pipe below the outlet main pipe, allows the initial solution to form a uniform filter layer from bottom to top during the filtration process, achieving a better filtration effect. At the same time, it prevents slag accumulation at the bottom and does not affect slag discharge. When the sealed tank reaches the set pressure, the lower inlet is closed, and the solution in the blade filter press will continue to be filtered for a certain period of time, which can reduce solution waste caused during slag discharge.

[0009] Preferably, the sealed chamber is further provided with a slag removal structure, the slag removal structure including a positioning device disposed at the lower part of the filter blade, the positioning device including a support spring and a limit, and a fixing device disposed at the upper part of the filter blade, the fixing device being connected to the filter blade through a fixing spring, and the fixing device being connected to a mechanical device.

[0010] This invention achieves the slag removal effect by transmitting external mechanical vibration to each filter leaf.

[0011] Preferably, the top of the sealed chamber is also provided with a flushing structure, which includes a high-pressure flushing nozzle device disposed above the filter blades, and automatically flushes after the slag is discharged.

[0012] Preferably, the bottom of the sealed chamber is further provided with a slag discharge structure, the slag discharge structure including a discharge device disposed at the bottom of the sealed chamber, the discharge device including a spiral blade conveying structure and a discharge pipe.

[0013] Preferably, the discharge pipe is located in the middle of the bottom of the sealed chamber, and the discharge pipe is equipped with a switch valve.

[0014] The slag on the filter blades of this invention falls to the bottom of the chamber by its own weight and vibration, and is then discharged to the outlet by the spiral blades. The outlet pipe and switch valve are located in the middle of the bottom of the sealed chamber. After the slag is discharged, the upper high-pressure nozzle cleans the chamber, and the cleaning water is discharged into the chamber along with the bottom slag. After that, the switch valve can be closed for operation again.

[0015] When the filtration time exceeds 2 hours, the inlet valve is closed according to the pressure inside the sealed chamber, enabling automatic liquid discharge, sludge removal, and cleaning functions.

[0016] Preferably, the filter blades are arranged vertically and parallel to each other.

[0017] Preferably, the main outlet pipe is equipped with a visualization window and an automatic detection sampling port, which can be switched according to the solution quality, and qualified solutions are used in the smelting back end.

[0018] Preferably, the top of the sealed chamber is also provided with an overflow pipe.

[0019] Preferably, the top of the sealed chamber is also provided with a pressure gauge interface for connecting to a pressure gauge.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The device of this utility model has high filtration efficiency, saves energy, and does not produce waste gas in the process. Compared with the traditional smelting solution filtration method, it has the advantages of not producing waste filter cloth, being environmentally friendly and green, having a high degree of intelligence, and occupying a small area. Different flow rate filtration equipment and intelligent control can be designed according to production needs. The solution purification reaction temperature does not change and the reaction is stable. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in this description are merely embodiments of this utility model.

[0023] Figure 1 This is a front view of the structure of a high-efficiency purification and filtration device for non-ferrous metal hydrometallurgical solutions according to this utility model.

[0024] Figure 2 This is a side view of the structure of a high-efficiency purification and filtration device for non-ferrous metal hydrometallurgical solutions according to this utility model. Detailed Implementation

[0025] The embodiments of the present invention are described below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, but are not to be construed as limiting the present invention.

[0026] like Figure 1-2 This utility model provides a device for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solutions, including at least one filtration unit;

[0027] The filtration unit includes a sealed chamber 1, in which filter blades 5 are provided. The liquid outlet main pipe 6 is connected to the liquid outlet pipe 11 of the filter blades 5. Three liquid inlet pipes 7 are provided, all located at the bottom of the sealed chamber 1 and below the liquid outlet main pipe 6.

[0028] Furthermore, the sealed chamber 1 is also provided with a slag removal structure, which includes a positioning device 8 located at the lower part of the filter blade 5, the positioning device 8 including a support spring and a limit, and a fixing device 2 located at the upper part of the filter blade 5. The fixing device 2 is connected to the filter blade 5 through a fixing spring and is connected to a mechanical device.

[0029] Furthermore, the top of the sealed chamber 1 is also equipped with a flushing structure, which includes a high-pressure flushing nozzle device 3 installed on the upper part between the filter blades 5. The high-pressure flushing nozzle device 3 is installed on the fixed device 2 and automatically flushes after the slag is discharged.

[0030] Furthermore, the bottom of the sealed chamber 1 is also provided with a slag discharge structure. The specific structure of the slag discharge structure is as follows: the slag discharge structure includes a discharge device set at the bottom of the sealed chamber 1. The discharge device includes a spiral blade conveying structure 4 and a discharge pipe 13. The discharge pipe 13 is set in the middle of the bottom of the sealed chamber 1, and the discharge pipe 13 is provided with a liquid drain pipe 12.

[0031] Furthermore, the filter blades 5 are arranged vertically and parallel to each other;

[0032] Furthermore, the main outlet pipe 6 is equipped with a visualization window and an automatic detection sampling port, which can be switched according to the solution quality. Qualified solutions are used in the smelting back end.

[0033] Furthermore, an overflow pipe 9 is also provided at the top of the sealed chamber 1;

[0034] Furthermore, the top of the sealed chamber 1 is also equipped with a pressure gauge interface 10 for connecting to a pressure gauge. Example 1

[0035] Adopting such Figure 1-2 The apparatus provides a method for efficient purification and filtration of a non-ferrous metal hydrometallurgical solution, specifically comprising the following steps:

[0036] (1) In the process of purifying the hydrometallurgical solution, zinc powder and activator or other purification agents are first added to deeply remove impurities in the solution; then the solution is quickly pumped into a closed high-efficiency filter device from the bottom inlet pipe. Large particles formed in the solution will quickly form a film from the bottom of the filter blades, which will have a filtering effect on its own. At the same time, it will react with unreacted impurity elements such as cadmium, cobalt, and iron in the solution to enhance the purification effect.

[0037] (2) During the period when the solution forms a filter film on the filter blades, before it can fully reach the qualified liquid level, the solution is monitored by taking samples through the automatic detection sampling port of the filter liquid pipeline of each blade outside the chamber. When the pressure inside the chamber reaches 0.3MPa and runs for 3 minutes, the solution can reach a 100% qualified rate. If the solution of each outlet pipe is found to be unqualified, the corresponding filter blade should have a fault of damage and leakage. Just close the outlet pipe valve of that pipeline, which will not affect the operation of other filter units.

[0038] (3) Slag unloading and cleaning: After the pressure reaches 0.6 MPa, maintain it for 15 minutes. The flow rate of the main outlet pipe will decrease significantly. The pump will automatically shut off and the inlet pipe valve will be closed. The bottom drain pipe valve will be opened to slowly discharge the liquid in the chamber and at the same time relieve pressure. After that, the slag unloading switch valve of the bottom drain pipe will be opened, the chamber vibration device will be started, and the bottom spiral blades will enter the working state. Vibration is 10 seconds as one cycle. After 10 seconds interval, after 3 cycles, the high-pressure flushing water will be turned on to achieve automatic flushing. Generally, flushing lasts for 20 seconds. After that, the valve will be closed to enter the next cycle operation.

[0039] (4) Soaking and inspection: After long-term operation, the filter blades and filter screens will become clogged. They must be soaked in acidic solution to restore the filtration effect. The soaked liquid is returned to the wet system without waste. For filter units where the solution is found to be unqualified during the filtration process, the blades are inspected, repaired or replaced.

[0040] The zinc sulfate solution purification section of a zinc smelting company was selected for industrial-scale testing. The operating conditions were: temperature <80℃, working pressure ≤0.4MPa, filtration accuracy 600 mesh, and processing capacity 60m³. 3 The process of treating the effluent is compared with that of the original purification box filter press. It can be seen that the solution obtained by the traditional purification filter press method is turbid and contains small particles, while the method of this utility model does not. Therefore, the solution high-efficiency purification and filtration method of this utility model is superior to the traditional purification filter press method.

[0041] Table 1 below shows the comparison results of the indicators of germanium, cobalt, cadmium and iron in the purified solution after the present invention and the original purification box filter press process. As can be seen from the table, the indicators of the purified solution after the wet smelting solution is better than those of the traditional plate and frame filter press method. The process has no exhaust steam production, optimizes the environment, reduces heat loss, and significantly reduces steam consumption compared with the traditional process.

[0042] Table 1. Indicator Detection Results

[0043]

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solutions, characterized in that, The device includes at least one filter unit; The filtration unit includes a sealed chamber, in which filter blades are provided. A main outlet pipe is connected to the outlet pipes of the filter blades, and an inlet pipe is located below the main outlet pipe. The sealed chamber is also equipped with a slag removal structure, which includes a positioning device disposed at the lower part of the filter blades. The positioning device includes a support spring and a limit, and a fixing device disposed at the upper part of the filter blades. The fixing device is connected to the filter blades through a fixing spring and is connected to a mechanical device.

2. The apparatus for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solution according to claim 1, characterized in that, The top of the sealed chamber is also provided with a flushing structure, which includes a high-pressure flushing nozzle device disposed above the filter blades.

3. The apparatus for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solution according to claim 1, characterized in that, The bottom of the sealed chamber is also provided with a slag discharge structure, which includes a discharge device located at the bottom of the sealed chamber. The discharge device includes a spiral blade conveying structure and a discharge pipe.

4. The apparatus for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solution according to claim 1, characterized in that, The filter blades are arranged vertically and parallel to each other.

5. The apparatus for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solution according to claim 1, characterized in that, The main outlet pipe is equipped with a visualization window and an automatic detection sampling port.

6. The apparatus for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solution according to claim 1, characterized in that, The sealed chamber is also equipped with an overflow pipe at the top.

7. The apparatus for high-efficiency purification and filtration of non-ferrous metal hydrometallurgical solution according to claim 1, characterized in that, The top of the sealed chamber is also equipped with a pressure gauge interface for connecting to a pressure gauge.

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