Electrolytic flotation machine

Abstract

The electrolytic flotation machine comprises a flotation machine main body and a stirring device, the flotation machine main body comprises a base containing a motor, a groove body, a control part of the groove body, an auxiliary part and an electrolytic bubble generating part, the control part comprises a stirring flotation machine main body containing the motor base and is provided with a rotary knob I, a rotary knob II and a button, and the auxiliary part comprises a base, a discharging opening, a lifting rod, an overflow groove, a rotatable platform, a manual button, a threaded hole, a bolt and a center column. The electrolytic bubble generating part comprises an adjustable direct-current power supply, a stainless steel spiral electrode, a hydrophobic microfiltration membrane, a graphite electrode, a wire I, a wire II, a stand column, a supporting rod, a positive terminal, a negative terminal, a metal buckle, a plastic buckle, a central threaded hole and a threaded hole; and the stirring device comprises a magnetic stirrer with a magnetic stirrer and a knob I. The flotation device has the advantages that the recovery rate of fine particles can be increased, the flotation speed is high, mineral resources can be better and comprehensively utilized, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of mineral processing equipment, in particular to an electrolytic flotation machine. Background Art

[0002] After a long period of human development and utilization, mineral resources have been steadily depleted in recent years, with the particle size of useful minerals becoming increasingly fine, and the reserves of high-quality mineral resources becoming increasingly scarce. This has led to the continuous amplification and exacerbation of the shortcomings of my country's mineral resources, namely "poor, fine, and mixed." The effective utilization of fine-grained minerals has gradually become a challenge in mining engineering technology. Mineral processing plant practice has shown that the loss of useful components in fine-grained materials can reach as high as 20%. In the field of mineral processing, slightly improving the recovery rate of useful minerals, reducing the amount of reagents used, or enhancing the separation and enrichment process is of great significance to the economic recovery of mineral resources and the sustainable development of the mineral processing industry. Extensive experimental research and theoretical calculations have shown that during flotation, the probability of particle-bubble collisions and adhesion increases with decreasing bubble size. Because the bubbles produced by conventional flotation machines are 0.5-1.2 mm in diameter, the effective separation and recovery of useful medium and fine-grained minerals in mineral processing is difficult, resulting in significant material losses in the fine fraction and low overall utilization of mineral resources.

[0003] For this reason, some people have proposed that electrolysis is an effective method for generating microbubbles. The size of the bubbles generated by electrolysis is generally 0.02-0.06mm. Therefore, using the microbubbles generated during the electrolysis process for flotation has obvious advantages for the separation and recovery of fine-grained minerals. The principle of electrolysis to generate microbubbles is as follows:

[0004] anode:

[0005] cathode:

[0006] Battery reaction:

[0007] Therefore, it is of practical significance to develop an electrolytic flotation machine. Summary of the Invention

[0008] The task of the utility model is to overcome the existing deficiencies and provide an electrolytic flotation machine that can not only utilize the hydrogen microbubbles generated by the electrolysis process and combine the technical characteristics of the flotation process to effectively select and recover fine-particle useful minerals, but also reduce the material loss of useful minerals in the fine-particle part, so as to enable further comprehensive utilization of mineral resources.

[0009] In order to complete the above tasks, this new method adopts the following technical solutions:

[0010] The electrolytic flotation machine includes a flotation machine body and a stirring device; the flotation machine body includes a motor base, a tank body and its control components, auxiliary components and an electrolytic bubble generating component. The control component includes a stirring flotation machine body. The motor base is provided with knobs I, II and buttons, which can control the tank body to slowly rotate up or down or control the start and stop of relevant functional components of the electrolytic flotation machine. The auxiliary components include a base, a discharge port, a lifting rod, an overflow tank, a rotatable platform, a manual button, a threaded hole, a bolt, a center column, a tank bottom and a discharge port, which can assist in achieving flotation. The electrolytic bubble generating component includes an adjustable DC power supply, a stainless steel spiral electrode, a hydrophobic microporous filter membrane, a graphite electrode, a wire I, a wire II, a column, a support rod, a positive electrode terminal, a negative electrode terminal, a metal clip, a plastic clip, a central threaded hole and a threaded hole. The component can generate microbubbles required for flotation in a magnetic stirrer and stir the ore pulp to ensure the dispersion of mineral particles and sufficient mixing with the flotation reagent. The stirring device includes a magnetic stirrer with a magnetic stirrer and a knob I to ensure the dispersion of mineral particles and sufficient mixing with the flotation reagent.

[0011] Compared with the prior art, the present invention has the following advantages or effects:

[0012] Because the flotation machine main body and stirring device can generate a large number of small-sized micro bubbles (φ0.02-0.06mm), the probability of collision and adhesion between the bubbles and fine mineral particles in the flotation process is increased, and the mineralization process of the fine particles is strengthened, thereby improving the recovery rate of fine particles. At the same time, since the bubbles generated by the flotation machine main body and stirring device are small in diameter and large in number, the floating load capacity is greater than that of conventional flotation, so the flotation speed is faster. In addition, since the flotation machine main body and stirring device can effectively process fine-grained materials that are difficult to process by conventional flotation, it can better comprehensively utilize mineral resources, that is, it can be used to select and recover fine-grained useful minerals such as fine-grained cassiterite, fine-grained fluorite, and fine-grained coal, so that they can be further fully recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific structure of the utility model is given in the following drawings.

[0014] Figure 1 The utility model is a three-dimensional schematic diagram of the overall structure of an electrolytic flotation machine proposed in this invention.

[0015] Figure 2 for Figure 1 The schematic diagram of the overall structure of the electrolytic flotation machine is shown.

[0016] Figure 3 for Figure 1 Schematic diagram of the electrolytic flotation machine structure breakdown.

[0017] Figure 4 for Figure 1The diagram shows the second schematic diagram of the electrolytic flotation machine structure.

[0018] Figure 5 for Figure 1 The following is a schematic diagram of the electrolytic flotation machine structure.

[0019] The symbols in the accompanying drawings represent:

[0020] 1. Motor base 2. Knob I 3. Knob II 4. Button 5. Base 6. Tank 7. Discharge port 8. Lifting rod 9. Overflow tank 10. Rotatable platform 11. Adjustable DC power supply 12. Manual button 13. Threaded hole 14. Bolt 15. Center column 16. Magnetic stirrer 17. Tank bottom 18. Magnetic stirring bar 19. Discharge port 20. Stainless steel spiral electrode 21. Hydrophobic microporous filter membrane 22. Graphite electrode 23. Wire I 24. Wire II 25. Column 26. Support rod 27. Positive terminal 28. Negative terminal 29. Metal clip 30. Plastic clip 31. Center threaded hole 32. Threaded hole

[0021] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] like Figures 1 to 5 As shown, according to the utility model, an electrolytic flotation machine is provided, which includes a flotation machine body and a stirring device; the flotation machine body includes a motor base 1, a tank body 6 and its control components, auxiliary components and an electrolytic bubble generating component, the control component includes a stirring flotation machine body containing a motor base 1 provided with a knob I 2, a knob II 3 and a button 4, which can control the tank body 6 to slowly rotate up or down or control the start and stop operation of relevant functional components of the electrolytic flotation machine, the auxiliary component includes a base 5, a discharge port 7, a lifting rod 8, an overflow tank 9, a rotatable platform 10, a manual button 12, a threaded hole 13, a bolt 14, a center column 15, a tank bottom 17 and a discharge port 19, which can assist in the actual In the present flotation process, the electrolytic bubble generating component includes an adjustable DC power supply 11, a stainless steel spiral electrode 20, a hydrophobic microporous filter membrane 21, a graphite electrode 22, a wire I 23, a wire II 24, a column 25, a support rod 26, a positive electrode terminal 27, a negative electrode terminal 28, a metal clip 29, a plastic clip 30, a central threaded hole 31 and a threaded hole 32. It can generate microbubbles required for flotation in the magnetic stirrer 16 and stir the slurry to ensure the dispersion of mineral particles and sufficient mixing with the flotation reagent; the stirring device includes a magnetic stirrer 16 with a magnetic stirrer 18 and a knob I 2, which can ensure the dispersion of mineral particles and sufficient mixing with the flotation reagent.

[0023] The present invention can further include:

[0024] An overflow trough 9 and a discharge port 7 are provided on the upper edge of the main tank body 6 of the agitator flotation machine. The inner wall of the tank body 6 is tapped with threads that match the threads tapped on the side of the tank bottom 17.

[0025] The main body of the agitator flotation machine includes a motor base 1 on one side of which a manual button Ⅰ2 and a lifting rod 8 are provided. Pressing the manual button Ⅰ2 can manually raise or lower the lifting rod 8, and releasing the manual button 12 can restore the lifting rod 8 to a preset position to maintain a constant height.

[0026] The stirring device knob I2 controls the magnetic stirrer 16 to adjust the rotation stirring speed of the magnetic stirrer 18 to be fast or slow.

[0027] The stirring device knob II 3 controls the base 5 to rotate up or down, thereby driving the tank body 6 to slowly rotate up or down.

[0028] The stirring device button 4 controls the opening and closing of the discharge port 19 .

[0029] The stirring device base 5 and the tank body 6 are each provided with four threaded holes 13 of the same diameter and are connected by bolts 14, so that the two can move synchronously under normal working conditions of the electrolytic flotation machine or facilitate the disassembly and maintenance of the tank body 6.

[0030] A magnetic stirrer 16 is provided in the central column 15 of the stirring device and serves as the central axis of rotation of the base 5. When the knob I2 is turned clockwise, the magnetic stirrer 16 starts to operate and drives the magnetic stirrer 18 in the bottom 17 of the tank to rotate. By continuing to turn the knob I2 clockwise, the rotation speed of the magnetic stirrer 18 in the bottom 17 of the tank will continue to increase, and the slurry in the tank body 6 can be fully stirred.

[0031] The bottom 17 of the stirring device is provided with a discharge port 19 on each side with a threaded side and a magnetic stirring rod 18 in the middle.

[0032] The rotatable platform 10 of the stirring device is provided with a column 25, a support rod 26 and an adjustable DC power supply 11. One end of the support rod 26 is connected to the column 25, and the other end is used to fix the graphite electrode 22. The adjustable DC power supply 11 can provide a suitable constant current required for electrolytic flotation.

[0033] The connection between the lifting rod 8 of the stirring device and the rotatable platform 10 is respectively threaded and provided with a threaded hole, which can not only fix the lifting rod 8 and the rotatable platform 10, but also allow the rotatable platform 10 to rotate around the lifting rod 8, so as to facilitate the loading and unloading of the stainless steel spiral electrode 20, the hydrophobic microporous filter membrane 21 and the graphite electrode 22.

[0034] The end of the stirring device support rod 29 connected to the column 25 is made of plastic material to fix one end of the graphite electrode 22, and is provided with a circular hole slightly smaller than the diameter of the graphite electrode 22 to facilitate the embedding and fixing of the graphite electrode 22 in the circular hole.

[0035] The upper vertical portion of the stainless steel spiral electrode 20 of the stirring device is threaded and fits into the threaded hole 32 provided on the rotatable platform 10. The upper vertical portion of the stainless steel spiral electrode 20 is screwed into the threaded hole 32 on the rotatable platform 10 to fix it.

[0036] The spiral shape of the stainless steel spiral electrode 20 of the stirring device can maximize the generation area of ​​microbubbles, effectively increase the number of microbubbles, and increase the gas content in the slurry solution, thereby strengthening the flotation process of fine particles and improving the recovery rate of fine-grained useful minerals.

[0037] The adjustable DC power supply 11 of the stirring device is provided with a positive electrode terminal 27 and a negative electrode terminal 28. The graphite electrode 22 is connected to the positive electrode terminal 27 via a wire I 23, and the stainless steel spiral electrode 20 is connected to the negative electrode terminal 28 via a wire II 24.

[0038] The upper end of the hydrophobic microporous filter membrane 21 of the stirring device is provided with a metal clip 29 with a top opening and is threaded. The hydrophobic microporous filter membrane 21 can be fixed to the rotatable platform 10 by screwing it into the central threaded hole 31 provided at the center of the rotatable platform 10. The lower end is provided with a plastic clip 30 with a closed bottom, which can make the hydrophobic microporous filter membrane 21 open at the top and closed at the bottom in a semi-closed state so as to hold a suitable electrolyte solution. Under the action of gravity exerted by the plastic clip 30, the hydrophobic microporous filter membrane 21 can maintain a vertical state and present a cylindrical shape.

[0039] The motor base 1, lifting rod 8, rotatable platform 10 and central column 15 are made of wear-resistant and corrosion-resistant metal or alloy.

[0040] The base 5 and the tank body 6 are made of transparent plastic or glass, which allows the height of the slurry level and the thickness of the foam layer in the tank body 6 to be observed at any time, thereby facilitating appropriate adjustments.

[0041] During operation, first place the magnetic stirring bar 18 at the center of the tank bottom 17, then insert the tank body 6 into the groove of the base 5 and align the threaded holes 13 opened at the lower part of the tank body 6 with the threaded holes 13 opened on the side of the base 5; then screw in the bolts 14 in sequence to fix the tank body 6 on the base 5 so that the two are combined into a whole. Subsequently, screw in the rotatable platform 10 and fix it on the lifting rod 8. Press the manual button 12 on the lifting rod 8, manually pull up the lifting rod 8 until the lifting rod is pulled to the appropriate height, then release the manual button 12, and the lifting rod 8 remains at the preset height; rotate the rotatable platform 10 around the lifting rod 8 to the side away from the tank body 6. The relative position relationship between the rotatable platform 10 and the tank body 6 is as shown in FIG. Figure 1As shown; the graphite electrode 22 is embedded in the circular hole at the rubber end of the support rod 26, the diameter of the circular hole is slightly smaller than the diameter of the graphite electrode 22, the bottom of the graphite electrode 22 is inserted into the hydrophobic microporous filter membrane 21 from bottom to top, and the metal clip 29 on the hydrophobic microporous filter membrane 21 is screwed into the central threaded hole 31 provided at the center of the rotatable platform to fix the hydrophobic microporous filter membrane 21 on the rotatable platform; the hydrophobic microporous filter membrane 21 is inserted into the stainless steel spiral electrode 20 from the bottom up, and the diameter of the stainless steel spiral electrode 20 is slightly larger than the diameter of the cylinder surrounded by the hydrophobic microporous filter membrane 21. Screw the upper vertical portion of the stainless steel spiral electrode 20 into the threaded hole 32 on the rotatable platform 10 to secure it to the rotatable platform. Align the centerlines of the stainless steel spiral electrode 20, hydrophobic microporous filter membrane 21, and graphite electrode 22 so that they coincide and lie on the same vertical line. Connect the graphite electrode 22 to the positive terminal 27 via a wire 23; connect the stainless steel spiral electrode 20 to the negative terminal 28 via a wire 24. Pour the desired fine-particle slurry into the tank 6 until the slurry level reaches an appropriate height. Turn knob I2 clockwise to activate the magnetic stirrer 16, causing the magnetic stirrer 18 to begin rotating at the bottom of the tank 17, stirring the slurry. Continue turning knob I2 to increase the speed of the magnetic stirrer 18 and the stirring intensity, ensuring that the slurry is fully agitated and that the added flotation reagent molecules can fully interact with the fine particles. Once the slurry in the tank 6 has been adjusted to meet experimental requirements,Turn knob Ⅰ2 to the left to reduce the rotation speed of the magnetic stirring bar 18 and weaken the stirring intensity, so as to reduce the disturbance of the slurry as much as possible without causing the fine-grained mineral ore to settle at the bottom of the tank bottom 17; rotate the rotatable platform 10 around the lifting rod 8 so that its center line is on the same vertical line as the center line of the tank body 6, press the manual button 12, and manually slowly lower the height of the lifting rod 8 so that the stainless steel spiral electrode 20, the hydrophobic microporous filter membrane 21 and the graphite electrode 22 are inserted into the slurry in the tank body 6 and penetrate to a suitable depth below the slurry liquid surface, release the manual button 12, and keep the height of the lifting rod 8 unchanged; add an electrolyte solution of appropriate concentration and volume (such as Na2SO4 solution, K2SO4 solution, etc.) from the central threaded hole of the rotatable platform 10 above the hydrophobic microporous filter membrane 21 Pour the liquid into the hydrophobic microporous filter membrane 21, turn on the adjustable DC power supply 11 and adjust the DC current. Electrolysis is performed at an appropriate constant current value, using the microbubbles generated by electrolysis to float and separate fine mineral particles. After a stable foam layer forms above the slurry surface in the tank 6, turn knob II3 leftward to rotate and descend the base 5, driving the tank 6 in a slow downward rotation. When the upper edge of the tank 6 is lower than the upper edge of the foam layer above the slurry surface, the concentrated froth product from the electrolytic flotation overflows into the overflow trough 9 provided at the upper edge of the tank 6 and is ultimately discharged through the discharge port 7 to recover the fine, useful mineral particles obtained through electrolytic flotation. After the electrolytic flotation cycle is completed, turn knob I2 leftward to turn off the magnetic stirrer 16, stopping the magnetic stirrer 18. Press button I4 to open the two discharge ports 19 at the bottom of the tank bottom 17. The tailings slurry from the electrolytic flotation separation is discharged through the discharge ports 19, completing the electrolytic flotation cycle. Turn knob II3 clockwise to rotate the base 5 upward and drive the tank 6 to slowly rotate upward. When the upper edge of the tank 6 reaches its initial height, stop turning knob II3 to maintain the upper edge of the tank 6 at the same height. Press manual button 12 and slowly manually raise the lifting rod 8 until the bottoms of the stainless steel spiral electrode 20, hydrophobic microporous filter membrane 21, and graphite electrode 22 are higher than the upper edge of the tank 6. Pour new ore slurry of appropriate concentration and volume into the tank 6 to begin a new electrolytic flotation process.

[0042] The above embodiments are only preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be considered equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. Electrolytic flotation machine, characterized by The invention comprises a flotation machine body and a stirring device; the flotation machine body comprises an internal motor base (1), a tank body (6) and its control components, auxiliary components and an electrolytic bubble generating component; the control component comprises an internal motor base (1) of the stirring flotation machine body provided with a knob I (2), a knob II (3) and a button (4), which can control the tank body (6) to slowly rotate upward or downward or control the start and stop operation of relevant functional components of the electrolytic flotation machine; the auxiliary component comprises a base (5), a discharge port (7), a lifting rod (8), an overflow tank (9), a rotatable platform (10), a manual button (12), a threaded hole (13), a bolt (14), a center column (15), a tank bottom (17) and a discharge port (19), which can assist in realizing the flotation process; the electrolytic bubble generating component comprises a center column (15), a tank bottom (17) and a discharge port (19), which can assist in realizing the flotation process; the electrolytic bubble generating component comprises an internal motor base (1) of the stirring flotation machine body provided with a knob I (2), a knob II (3) and a button (4), which can control the tank body (6) to slowly rotate upward or downward or control the start and stop operation of relevant functional components of the electrolytic flotation machine; the auxiliary component comprises a base (5), a discharge port (7), a lifting rod (8), an overflow tank (9), a rotatable platform (10), a manual button (12), a threaded hole (13), a bolt (14), a center column (15), a tank bottom (17) and a discharge port (19), which can assist in realizing the flotation process; the electrolytic bubble generating component comprises an internal motor base (1) of the stirring flotation machine body provided with a knob (2), a knob II (3) and a button (4), which can control the tank body (6) to slowly rotate upward or downward or control the start and stop operation of relevant functional components of the electrolytic flotation machine; the auxiliary component comprises a base (5), a discharge port ( The generating components include an adjustable DC power supply (11), a stainless steel spiral electrode (20), a hydrophobic microporous filter membrane (21), a graphite electrode (22), a wire I (23), a wire II (24), a column (25), a support rod (26), a positive electrode terminal (27), a negative electrode terminal (28), a metal buckle (29), a plastic buckle (30), a central threaded hole (31) and a threaded hole (32), which can generate microbubbles required for flotation in a magnetic stirrer (16) and stir the slurry to ensure the dispersion of mineral particles and sufficient mixing with the flotation reagent; the stirring device includes a magnetic stirrer (16) with a magnetic stirrer (18) and a knob I (2), which can ensure the dispersion of mineral particles and sufficient mixing with the flotation reagent.

2. The electrolytic flotation machine according to claim 1, wherein An overflow trough (9) and a discharge port (7) are provided on the upper edge of the main tank body (6) of the agitator flotation machine. The inner wall of the tank body (6) is tapped with threads that match the threads tapped on the side of the tank bottom (17).

3. The electrolytic flotation machine according to claim 1 or 2, characterized in that The main body of the agitator flotation machine includes a motor base (1) on one side of which a manual button I (2) and a lifting rod (8) are provided. By pressing the manual button I (2), the lifting rod (8) can be manually raised or lowered. By releasing the manual button (12), the lifting rod (8) can be restored to a preset position to maintain a constant height.

4. The electrolytic flotation machine according to claim 1, wherein The stirring device knob I (2) controls the magnetic stirrer (16) to adjust the rotation stirring speed of the magnetic stirrer (18) to be fast or slow.

5. The electrolytic flotation machine according to claim 1, wherein The stirring device knob II (3) controls the base (5) to rotate upward or downward, thereby driving the tank body (6) to rotate upward or downward slowly.

6. The electrolytic flotation machine according to claim 1, characterized in that The stirring device button (4) controls the opening and closing of the ore discharge port (19).

7. The electrolytic flotation machine according to claim 1, wherein The stirring device base (5) and the tank body (6) are each provided with four threaded holes (13) of the same diameter and are connected by bolts (14), so that the two can move synchronously under normal working conditions of the electrolytic flotation machine or facilitate the disassembly and maintenance of the tank body (6).

8. The electrolytic flotation machine according to claim 1, wherein A magnetic stirrer (16) is provided in the central column (15) of the stirring device and serves as the central axis of rotation of the base (5). When the knob I (2) is rotated clockwise, the magnetic stirrer (16) starts to operate and drives the magnetic stirrer (18) in the bottom of the tank (17) to rotate. When the knob I (2) is continuously rotated clockwise, the rotation speed of the magnetic stirrer (18) in the bottom of the tank (17) will continue to increase, thereby fully stirring the slurry in the tank body (6).

9. The electrolytic flotation machine according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that A discharge port (19) with threads on the sides and a magnetic stirring bar (18) in the middle is provided on each of the left and right sides of the bottom (17) of the stirring device.

10. The electrolytic flotation machine according to claim 1, characterized in that The rotatable platform (10) of the stirring device is provided with a column (25), a support rod (26) and an adjustable DC power supply (11). One end of the support rod (26) is connected to the column (25), and the other end is used to fix the graphite electrode (22). The adjustable DC power supply (11) can provide a suitable constant current required for electrolytic flotation.

11. The electrolytic flotation machine according to claim 1, characterized in that The connection between the lifting rod (8) of the stirring device and the rotatable platform (10) is respectively threaded and provided with a threaded hole, so that the lifting rod (8) and the rotatable platform (10) can be fixedly connected and the rotatable platform (10) can be rotated around the lifting rod (8) to facilitate the loading and unloading of the stainless steel spiral electrode (20), the hydrophobic microporous filter membrane (21) and the graphite electrode (22).

12. The electrolytic flotation machine according to claim 1, characterized in that One end of the stirring device support rod (29) connected to the column (25) is made of plastic material to fix one end of the graphite electrode (22) and is provided with a circular hole slightly smaller than the diameter of the graphite electrode (22) to facilitate the graphite electrode (22) to be embedded in the circular hole and fixed.

13. The electrolytic flotation machine according to claim 1, characterized in that The upper vertical portion of the stainless steel spiral electrode (20) of the stirring device is threaded and fits into the threaded hole (32) provided on the rotatable platform (10). The upper vertical portion of the stainless steel spiral electrode (20) can be fixed by screwing it into the threaded hole (32) opened on the rotatable platform (10).

14. The electrolytic flotation machine according to claim 1, characterized in that The spiral shape of the stainless steel spiral electrode (20) of the stirring device can maximize the generation area of ​​microbubbles, effectively increase the number of microbubbles, and increase the gas content in the slurry solution, thereby strengthening the flotation process of microparticles and improving the recovery rate of fine-grained useful minerals.

15. The electrolytic flotation machine according to claim 1, characterized in that The adjustable DC power supply (11) of the stirring device is provided with a positive electrode terminal (27) and a negative electrode terminal (28); the graphite electrode (22) is connected to the positive electrode terminal (27) via a wire I (23); and the stainless steel spiral electrode (20) is connected to the negative electrode terminal (28) via a wire II (24).

16. The electrolytic flotation machine according to claim 1 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15, characterized in that The upper end of the hydrophobic microporous filter membrane (21) of the stirring device is provided with a metal buckle (29) with a top opening and is threaded. The hydrophobic microporous filter membrane (21) can be fixed to the rotatable platform (10) by screwing it into the central threaded hole (31) provided at the center of the rotatable platform (10). The lower end is provided with a plastic buckle (30) with a closed bottom, which can make the hydrophobic microporous filter membrane (21) open at the top and closed at the bottom in a semi-closed state so as to contain a suitable electrolyte solution. Under the action of gravity applied by the plastic buckle (30), the hydrophobic microporous filter membrane (21) can maintain a vertical state and present a cylindrical shape.

17. The electrolytic flotation machine according to claim 1, characterized in that The motor base (1), lifting rod (8), rotatable platform (10) and central column (15) are made of wear-resistant and corrosion-resistant metal or alloy.

18. The electrolytic flotation machine according to claim 1, characterized in that The base (5) and the tank body (6) are made of transparent plastic or glass material, which allows the height of the slurry level, the thickness of the foam layer, etc. in the tank body (6) to be observed at any time, thereby facilitating appropriate adjustments.

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