An oxygen pressure leaching device with a high indium leaching rate

Abstract

The present invention discloses an oxygen pressure leaching device with a high indium leaching rate, which comprises a processing barrel. An leaching cylinder is fixedly installed inside the processing barrel, and a feed pipe is fixedly installed between the leaching cylinder and the processing barrel. A fixed pipe is installed inside the processing barrel through an oxygen generation mechanism, and an upper oxygen pipe is fixedly installed between the fixed pipe and the leaching cylinder. A driven shaft is rotatably installed between the leaching cylinder and the processing barrel. A driving shaft is rotatably installed between the upper oxygen pipe and the processing barrel, and a driving mechanism is installed between the driving shaft and the driven shaft. The advantages are as follows: By adopting the leaching method of segmented oxygen feeding for leaching reaction, the present invention can not only avoid waste of oxygen, but also enable oxygen to fully contact and react with sulfuric acid and indium-containing waste, and realize the staged separation, screening and derivation of metallic indium, waste and sulfuric acid. The leaching rate and leaching efficiency of metallic indium are both relatively high.

Description

Technical Field

[0001] The present invention relates to the technical field of indium oxygen pressure extraction, and particularly relates to an oxygen pressure leaching device with a high indium leaching rate. Background Art

[0002] Indium is a silver-white and slightly pale blue metal with high ductility and plasticity, and is mainly used in the manufacture of low-melting alloys, bearing alloys, semiconductors, etc. After the existing low-melting alloys, bearing alloys, semiconductors and other items are discarded, an oxygen pressure leaching device is usually used to leach the metal indium in the waste materials for recycling.

[0003] The existing oxygen pressure leaching device still has the following deficiencies in actual use:

[0004] 1. When the existing oxygen pressure leaching device performs the sulfuric acid oxygen leaching process on indium-containing waste materials, since the indium-containing waste materials are likely to precipitate inside the device, they cannot come into full contact with oxygen, and the leaching efficiency and conversion rate of metal indium are both low.

[0005] 2. The existing oxygen pressure leaching device usually leaches metal indium by means of non-intermittent oxygen supply. This method not only wastes oxygen and fails to make full use of oxygen, but also the air pressure inside the device needs to be controlled at any time, and the operation process is relatively complicated.

[0006] 3. The existing oxygen pressure leaching device cannot accurately separate metal indium, waste impurities and sulfuric acid. It is difficult to extract the metal indium after oxidative leaching, which has certain limitations.

[0007] Therefore, it is urgent to design an oxygen pressure leaching device with a high indium leaching rate to solve the above problems.

[0008] The information disclosed in this background art section is only for increasing the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0009] The purpose of the present invention is to solve the problems in the prior art that indium-containing waste materials cannot come into full contact and react with oxygen, oxygen is wasted, and it is difficult to separate metal indium, and to propose an oxygen pressure leaching device with a high indium leaching rate.

[0010] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0011] An oxygen pressure leaching device with a high indium leaching rate, comprising a processing barrel. An leaching cylinder is fixedly installed inside the processing barrel, and a feed pipe is fixedly installed between the leaching cylinder and the processing barrel. A fixed pipe is installed inside the processing barrel through an oxygen generation mechanism, and an upper oxygen pipe is fixedly installed between the fixed pipe and the leaching cylinder. A driven shaft is rotatably installed between the leaching cylinder and the processing barrel. A driving shaft is rotatably installed between the upper oxygen pipe and the processing barrel, and a driving mechanism is installed between the driving shaft and the driven shaft. A plurality of stirring spoons are fixedly installed on the driven shaft;

[0012] A bearing plate and a segmented plate are fixedly installed inside the leaching cylinder. A plurality of lower liquid pipes and a plurality of upper gas pipes are fixedly installed on the segmented plate. One-way valves are provided in both the plurality of lower liquid pipes and the plurality of upper gas pipes, and filter meshes are provided in the plurality of lower liquid pipes. A gas guide cover is fixedly installed between the bearing plate and the upper oxygen pipe. An oxygen storage device is fixedly installed between the bearing plate and the segmented plate, and an oxygen guide pipe is fixedly installed between the oxygen storage device and the upper oxygen pipe. Control valves are provided in both the oxygen guide pipe and the upper oxygen pipe. A plurality of oxygen outlet pipes are fixedly installed on the oxygen storage device, and a blocking mechanism is installed in each oxygen outlet pipe. A discharge mechanism is installed between the leaching cylinder and the processing barrel. An exhaust pipe is fixedly installed between the leaching cylinder and the processing barrel, and a pressure relief mechanism is installed in the exhaust pipe.

[0013] In the above-mentioned oxygen pressure leaching device with a high indium leaching rate, the oxygen generation mechanism includes an oxygen generator fixedly installed inside the processing barrel. A supplementary gas pipe is fixedly installed on the oxygen generator and the processing barrel, and the fixed pipe is fixedly installed on the oxygen outlet pipe of the oxygen generator.

[0014] In the above-mentioned oxygen pressure leaching device with a high indium leaching rate, the driving mechanism includes a driving wheel fixedly installed on the driving shaft. A plurality of driving blades are fixedly installed on the driving wheel, and all the plurality of driving blades are located inside the upper oxygen pipe. A guide plate inclinedly arranged is fixedly installed inside the upper oxygen pipe. A linkage structure is installed between the driving shaft and the driven shaft.

[0015] In the above-mentioned oxygen pressure leaching device with a high indium leaching rate, the linkage structure includes a driving wheel fixedly installed on the driving shaft. A driven wheel is fixedly installed on the driven shaft, and a transmission belt is fixedly sleeved between the driving wheel and the driven wheel.

[0016] In the above-mentioned oxygen pressure leaching device with a high indium leaching rate, the blocking mechanism includes a blocking disc fixedly installed inside the oxygen outlet pipe. An abnormally shaped air guide hole is formed in the blocking disc. A sealing disc is slidably installed in the abnormally shaped air guide hole, and a plurality of compression springs are fixedly installed between the sealing disc and the inner wall of the abnormally shaped air guide hole.

[0017] In the above oxygen pressure leaching device with a high indium leaching rate, the discharging mechanism includes a impurity discharge pipe, a material discharge pipe, and an indium discharge pipe fixedly installed between the processing barrel and the leaching barrel. The impurity discharge pipe is located above the segmented disk, and the material discharge pipe and the indium discharge pipe are located between the bearing plate and the segmented disk. A barrier filter screen is fixedly installed in the material discharge pipe.

[0018] In the above oxygen pressure leaching device with a high indium leaching rate, the pressure relief mechanism includes a fixed disk fixedly installed in the exhaust pipe. A plugging rod is installed in the exhaust pipe through a sliding structure, and a communication hole matching the plugging rod is opened in the fixed disk.

[0019] In the above oxygen pressure leaching device with a high indium leaching rate, the sliding structure includes two trapezoidal sliding rods fixedly installed in the exhaust pipe. Two moving plates are slidably engaged on the two trapezoidal sliding rods through trapezoidal sliding grooves, and the plugging rod is fixedly installed between the two moving plates. A reset spring rod is fixedly installed between the two moving plates and the fixed disk.

[0020] Compared with the existing technology, the advantages of the present invention are as follows:

[0021] 1. The present invention adopts the method of directly introducing oxygen into the indium-containing sulfuric acid waste, which can make oxygen contact with sulfuric acid and indium-containing waste fully and thoroughly, so that the metallic indium in the indium-containing waste can be leached more thoroughly, and both the leaching rate and the leaching efficiency are relatively high.

[0022] 2. The present invention can utilize and convert the flowing mechanical energy when oxygen flows, and can convert it to drive multiple stirring spoons to rotate, that is, the sulfuric acid and indium-containing waste can be stirred during the oxygen introduction process, so as to increase the fluidity of the sulfuric acid and indium-containing waste, and make the contact between oxygen and sulfuric acid and indium-containing waste more sufficient and thorough.

[0023] 3. The present invention adopts a two-stage oxygen introduction leaching method for leaching metallic indium. After the initial oxygen introduction, the subsequent oxygen is stored, so that oxygen can not only react fully without waste, but also reasonably utilize the internal air pressure of the device to realize secondary oxygen introduction leaching, further improving the leaching efficiency.

[0024] In summary, by adopting the leaching method of segmented oxygen introduction leaching reaction, the present invention can not only avoid waste of oxygen, but also make oxygen contact and react fully with sulfuric acid and indium-containing waste, and realize the staged separation, screening and derivation of metallic indium, waste and sulfuric acid. Both the leaching rate and the leaching efficiency of metallic indium are relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further details the specific embodiments of the present invention in conjunction with the drawings, where:

[0026] Figure 1Schematic structural diagram of an oxygen pressure leaching device with a high indium leaching rate proposed by the present invention;

[0027] Figure 2 For Figure 1 Cross-sectional view of the processing barrel and its internal structure;

[0028] Figure 3 For Figure 1 Enlarged view of the internal structure of the processing barrel;

[0029] Figure 4 For Figure 3 Enlarged view of the internal connection structure between the leaching cylinder and its upper part;

[0030] Figure 5 For Figure 4 Enlarged view of the internal structure of the oxygen outlet pipe;

[0031] Figure 6 For Figure 4 Cross-sectional view of the internal structure of the oxygen inlet pipe;

[0032] Figure 7 For Figure 3 Cross-sectional view of the internal structure of the exhaust pipe.

[0033] In the figure: 1 processing barrel, 2 feed pipe, 3 impurity discharge pipe, 4 discharge pipe, 5 gas supply pipe, 6 exhaust pipe, 7 oxygen generator, 8 leaching cylinder, 9 oxygen inlet pipe, 10 bearing plate, 11 driven shaft, 12 stirring spoon, 13 transmission belt, 14 driving shaft, 15 oxygen guiding pipe, 16 oxygen storage tank, 17 oxygen outlet pipe, 18 segmented plate, 19 fixed wheel, 20 compression spring, 21 guiding plate, 22 active blade, 23 fixed plate, 24 communication hole, 25 blocking rod, 26 moving plate, 27 reset spring rod, 28 blocking plate, 29 special-shaped air guiding hole, 30 sealing plate. Specific implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Refer to Figures 1 - 4, An oxygen pressure leaching device with a high indium leaching rate, including a processing barrel 1. An leaching cylinder 8 is fixedly installed inside the processing barrel 1. A fixed pipe is installed inside the processing barrel 1 through an oxygen generation mechanism, and an upper oxygen pipe 9 is fixedly installed between the fixed pipe and the leaching cylinder 8. A driven shaft 11 is rotatably installed between the leaching cylinder 8 and the processing barrel 1. A driving shaft 14 is rotatably installed between the upper oxygen pipe 9 and the processing barrel 1, and a driving mechanism is installed between the driving shaft 14 and the driven shaft 11. A bearing plate 10 and a segmented disk 18 are fixedly installed inside the leaching cylinder 8, and a plurality of stirring spoons 12 are fixedly installed on the driven shaft 11;

[0036] The following points are worthy of attention:

[0037] 1. A feed pipe 2 is fixedly installed between the leaching cylinder 8 and the processing barrel 1. The feed pipe 2 is used to introduce sulfuric acid and indium-containing waste from the outside of the processing barrel 1 onto the segmented disk 18 inside the leaching cylinder 8.

[0038] 2. The oxygen generation mechanism includes an oxygen generator 7 fixedly installed inside the processing barrel 1. A gas supply pipe 5 is fixedly installed between the oxygen generator 7 and the processing barrel 1. The fixed pipe is fixedly installed on the oxygen outlet pipe 17 of the oxygen generator 7. An exhaust gas pipe for discharging waste gas is fixedly installed between the oxygen generator 7 and the processing barrel 1. The oxygen generator 7 inhales external air through the gas supply pipe 5 and exports it to the upper oxygen pipe 9 through the oxygen outlet pipe 17 and the fixed pipe.

[0039] 3. The driving mechanism includes a driving wheel fixedly installed on the driving shaft 14, and a plurality of driving blades 22 are fixedly installed on the driving wheel. All the plurality of driving blades 22 are located inside the upper oxygen pipe 9. A guide plate 21 inclinedly installed is fixedly installed inside the upper oxygen pipe 9. When oxygen flows inside the upper oxygen pipe 9, it will impact the plurality of driving blades 22 under the action of the guide plate 21 to make them rotate, thereby driving the driving shaft 14 to rotate, completing the conversion of the mechanical energy of oxygen flow into the rotational mechanical energy of the driving shaft 14.

[0040] 4. A linkage structure is installed between the driving shaft 14 and the driven shaft 11. The linkage structure includes a driving wheel fixedly installed on the driving shaft 14, a driven wheel fixedly installed on the driven shaft 11, and a transmission belt 13 is fixedly sleeved between the driving wheel and the driven wheel. The rotation of the driving shaft 14 will drive the driving wheel to rotate, and will drive the driven shaft 11 to rotate under the combined action of the transmission belt 13 and the driven wheel.

[0041] Refer to Figure 2 , Figures 4 - 7 , A plurality of lower liquid pipes and a plurality of upper gas pipes are fixedly installed on the segmented disk 18. An oxygen storage device 16 is fixedly installed between the bearing plate 10 and the segmented disk 18. A oxygen guide pipe 15 is fixedly installed between the oxygen storage device 16 and the upper oxygen pipe 9. A plurality of oxygen outlet pipes 17 are fixedly installed on the oxygen storage device 16. An exhaust pipe 6 is fixedly installed between the leaching cylinder 8 and the processing barrel 1, and a pressure relief mechanism is installed inside the exhaust pipe 6;

[0042] The following points are noteworthy:

[0043] 1. Check valves are provided in both multiple lower liquid pipes and multiple upper gas pipes, and filter meshes are provided in multiple lower liquid pipes. When the lower liquid pipes are closed, sulfuric acid and indium-containing waste will accumulate on the segmented plate 18. After the preliminary leaching reaction of sulfuric acid and indium-containing waste is completed, the lower liquid pipes will open, allowing sulfuric acid, small-volume indium-containing waste, and preliminarily leached indium metal to fall onto the bearing plate 10 through the lower liquid pipes, while the large-volume indium-free waste will remain on the segmented plate 18, thus completing the preliminary separation.

[0044] 2. Control valves are provided in both the oxygen guide pipe 15 and the upper oxygen pipe 9. A gas guide hood is fixedly installed between the bearing plate 10 and the upper oxygen pipe 9. The oxygen in the upper oxygen pipe 9 will enter the sulfuric acid and indium-containing waste on the segmented plate 18 through the gas guide hood, the bearing plate 10, and multiple upper gas pipes, and will directly contact the sulfuric acid and indium-containing waste, enabling them to fully contact and react.

[0045] 3. When carrying out an oxygen pressure reaction on sulfuric acid and indium-containing waste, multiple stirring spoons 12 will rotate synchronously to stir the sulfuric acid and indium-containing waste, thereby increasing the fluidity of the sulfuric acid and indium-containing waste and making the contact between oxygen and sulfuric acid and indium-containing waste more sufficient and thorough.

[0046] 4. The pressure relief mechanism includes a fixed plate 23 fixedly installed in the exhaust pipe 6. A plugging rod 25 is installed in the exhaust pipe 6 through a sliding structure, and a communication hole 24 matching the plugging rod 25 is opened in the fixed plate 23. The waste gas generated when oxygen contacts and reacts with sulfuric acid and indium-containing waste will accumulate in the leaching cylinder 8. At this time, the air pressure in the leaching cylinder 8 will gradually increase, thereby pushing the plugging rod 25 to move outward. When the plugging rod 25 moves outward to separate from the communication hole 24 in the fixed plate 23, the exhaust pipe 6 will be connected. At this time, the waste gas in the leaching cylinder 8 will quickly relieve pressure through the exhaust pipe 6 and be discharged. After the waste gas is discharged, the indium-containing waste will fall onto the bearing plate 10.

[0047] 5. The sliding structure includes two trapezoidal sliding rods fixedly installed in the exhaust pipe 6. A moving plate 26 is slidably engaged on each of the two trapezoidal sliding rods through a trapezoidal sliding groove, and the plugging rod 25 is fixedly installed between the two moving plates 26. A reset spring rod 27 is fixedly installed between each of the two moving plates 26 and the fixed plate 23. When the gas in the leaching cylinder 8 is depressurized, the air pressure decreases, and the reset spring rod 27 will automatically contract and reset, thereby driving the moving plate 26 and the plugging rod 25 to move back to plug the communication hole 24 again, completing the sealing and pressure stabilization work inside the leaching cylinder 8.

[0048] 6. After the initial oxygen supply through the oxygen supply pipe 9 is completed, the oxygen guide pipe 15 will be opened at this time, and the oxygen in the oxygen supply pipe 9 will be introduced into the oxygen storage tank 16 through the oxygen guide pipe 15 for storage, so that oxygen will not be continuously introduced into the leaching cylinder 8, resulting in waste.

[0049] 7. A blocking mechanism is installed in each oxygen outlet pipe 17. The blocking mechanism includes a blocking disk 28 fixedly installed in the oxygen outlet pipe 17. An irregular air guide hole 29 is opened in the blocking disk 28. A sealing disk 30 is slidably installed in the irregular air guide hole 29. A plurality of compression springs 20 are fixedly installed between the sealing disk 30 and the inner wall of the irregular air guide hole 29. When the oxygen in the oxygen storage tank 16 accumulates to a certain extent, a plurality of sealing disks 30 will be pushed open at this time to connect the oxygen outlet pipe 17. At this time, the oxygen in the oxygen storage tank 16 will be directly introduced into the sulfuric acid and indium-containing waste on the bearing plate 10, and the indium-containing waste can be leached for the second time, further improving the leaching efficiency of indium metal.

[0050] 8. A discharging mechanism is installed between the leaching cylinder 8 and the processing barrel 1. The discharging mechanism includes a waste discharging pipe 3, a discharging pipe 4, and an indium discharging pipe fixedly installed between the processing barrel 1 and the leaching cylinder 8. The waste discharging pipe 3 is located above the segmented disk 18, and the discharging pipe 4 and the indium discharging pipe are located between the bearing plate 10 and the segmented disk 18. A blocking filter screen is fixedly installed in the discharging pipe 4. After the indium leaching is completed, the discharging pipe 4 can be opened first to discharge the sulfuric acid and leaching waste on the bearing plate 10, while the indium will remain on the bearing plate 10 under the blocking of the blocking filter screen. After the discharging is completed, the indium discharging pipe will be opened, and the indium can be taken out to complete the separation of the waste and the extraction of indium metal.

[0051] Further explanation, the above fixed connection, unless otherwise clearly specified and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0052] In the present invention, when performing oxygen pressure leaching of indium metal, first, sulfuric acid and indium-containing waste are introduced from the outside of the processing barrel 1 into the segmented disk 18 in the leaching cylinder 8. Then, the oxygen generator 7 is turned on to perform the work of inhaling air and extracting oxygen. The oxygen is led into the oxygen supply pipe 9 through the oxygen outlet pipe 17 and the fixed pipe, and enters the sulfuric acid and indium-containing waste on the segmented disk 18 through the air guide cover, the bearing plate 10, and a plurality of upper air pipes, and will directly contact the sulfuric acid and indium-containing waste, making them fully contact for a first-stage reaction. At the same time as the oxygen passing reaction, a plurality of stirring spoons 12 will rotate synchronously to stir the sulfuric acid and indium-containing waste, so as to increase the fluidity of the sulfuric acid and indium-containing waste, and make the contact between oxygen and sulfuric acid and indium-containing waste more sufficient and thorough;

[0053] When the waste gas generated during the contact reaction of oxygen with sulfuric acid and indium-containing waste accumulates in the leaching cylinder 8, the increasing air pressure in the leaching cylinder 8 will push the plugging rod 25 to move outward. When the plugging rod 25 moves outward to separate from the communication hole 24 on the fixed disk 23, the exhaust pipe 6 is connected. At this time, the waste gas in the leaching cylinder 8 will quickly discharge through the exhaust pipe 6 for pressure relief and be discharged, which means the preliminary reaction is completed. After the waste gas is discharged, the indium-containing waste will fall onto the bearing plate 10;

[0054] After the initial oxygen supply ends, the oxygen in the upper oxygen pipe 9 will accumulate in the oxygen storage device 16 and will not continue to supply oxygen. When the oxygen in the oxygen storage device 16 accumulates to a certain extent, it will then flush open multiple sealing disks 30 to connect the oxygen outlet pipe 17. At this time, the oxygen in the oxygen storage device 16 will directly pass into the sulfuric acid and indium-containing waste on the bearing plate 10, and the indium-containing waste can be leached for the second time to further improve the leaching efficiency of indium metal;

[0055] After the indium metal is leached, the sulfuric acid and leaching waste on the bearing plate 10 can be discharged by first opening the discharge pipe 4. The indium metal will remain on the bearing plate 10 under the barrier of the barrier filter. After the discharge is completed, the indium discharge pipe will be opened, and the indium metal can be taken out to complete the separation of the waste and the extraction of indium metal.

[0056] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An oxygen pressure leaching device with a high indium leaching rate, comprising a processing barrel (1), characterized in that, an leaching cylinder (8) is fixedly installed inside the processing barrel (1), and a feed pipe (2) is fixedly installed between the leaching cylinder (8) and the processing barrel (1). A fixed pipe is installed inside the processing barrel (1) through an oxygen generation mechanism, and an upper oxygen pipe (9) is fixedly installed between the fixed pipe and the leaching cylinder (8). A driven shaft (11) is rotatably installed between the leaching cylinder (8) and the processing barrel (1). A driving shaft (14) is rotatably installed between the upper oxygen pipe (9) and the processing barrel (1), and a driving mechanism is installed between the driving shaft (14) and the driven shaft (11). A plurality of stirring spoons (12) are fixedly installed on the driven shaft (11); a bearing plate (10) and a segmented plate (18) are fixedly installed inside the leaching cylinder (8). A plurality of lower liquid pipes and a plurality of upper gas pipes are fixedly installed on the segmented plate (18). One-way valves are arranged in both the plurality of lower liquid pipes and the plurality of upper gas pipes, and filter meshes are arranged in the plurality of lower liquid pipes. A gas guide hood is fixedly installed between the bearing plate (10) and the upper oxygen pipe (9). An oxygen storage device (16) is fixedly installed between the bearing plate (10) and the segmented plate (18), and an oxygen guide pipe (15) is fixedly installed between the oxygen storage device (16) and the upper oxygen pipe (9). Control valves are arranged in both the oxygen guide pipe (15) and the upper oxygen pipe (9). A plurality of oxygen outlet pipes (17) are fixedly installed on the oxygen storage device (16), and a blocking mechanism is installed in each oxygen outlet pipe (17). A discharging mechanism is installed between the leaching cylinder (8) and the processing barrel (1). An exhaust pipe (6) is fixedly installed between the leaching cylinder (8) and the processing barrel (1), and a pressure relief mechanism is installed in the exhaust pipe (6); The oxygen generation mechanism includes an oxygen generator (7) fixedly installed inside the processing barrel (1). A supplementary gas pipe (5) is fixedly installed on the oxygen generator (7) and the processing barrel (1), and the fixed pipe is fixedly installed on the oxygen outlet pipe (17) of the oxygen generator (7). The blocking mechanism includes a blocking disk (28) fixedly installed inside the oxygen outlet pipe (17). An irregular air guide hole (29) is formed in the blocking disk (28). A sealing disk (30) is slidably installed in the irregular air guide hole (29), and a plurality of compression springs (20) are fixedly installed between the sealing disk (30) and the inner wall of the irregular air guide hole (29); The discharging mechanism includes a waste discharge pipe (3), a discharge pipe (4), and an indium discharge pipe fixedly installed between the processing barrel (1) and the leaching cylinder (8). The waste discharge pipe (3) is located above the segmented plate (18), and the discharge pipe (4) and the indium discharge pipe are located between the bearing plate (10) and the segmented plate (18). A blocking filter mesh is fixedly installed in the discharge pipe (4); The pressure relief mechanism includes a fixed disk (23) fixedly installed inside the exhaust pipe (6). A blocking rod (25) is installed inside the exhaust pipe (6) through a sliding structure, and a communication hole (24) matching the blocking rod (25) is formed in the fixed disk (23).

2. The oxygen pressure leaching device with a high indium leaching rate according to claim 1, characterized in that, The driving mechanism includes a driving wheel fixedly installed on the driving shaft (14), and a plurality of driving blades (22) are fixedly installed on the driving wheel. The plurality of driving blades (22) are all located in the upper oxygen pipe (9). A guide plate (21) arranged obliquely is fixedly installed in the upper oxygen pipe (9). A linkage structure is installed between the driving shaft (14) and the driven shaft (11).

3. An oxygen pressure leaching device with a high indium leaching rate according to claim 2, characterized in that, the linkage structure includes a driving wheel fixedly installed on the driving shaft (14), a driven wheel is fixedly installed on the driven shaft (11), and a transmission belt (13) is fixedly sleeved between the driving wheel and the driven wheel.

4. An oxygen pressure leaching device with a high indium leaching rate according to claim 3, characterized in that, the sliding structure includes two trapezoidal slide bars fixedly installed in the exhaust pipe (6). A moving plate (26) is slidably clamped on each of the two trapezoidal slide bars through the cooperation of trapezoidal chutes. A blocking rod (25) is fixedly installed between the two moving plates (26). A return spring rod (27) is fixedly installed between each of the two moving plates (26) and the fixed disk (23).

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