Hydrometallurgy reaction device and operation method thereof

Abstract

The invention discloses a hydrometallurgy reaction device and an operation method thereof. The hydrometallurgy reaction device comprises a normal-pressure reaction tank body, a first gas-liquid mixture inlet, a second gas-liquid mixture inlet and a second gas-liquid mixture inlet, a stirrer; the gas disperser comprises a gas-liquid premixing section, the gas-liquid premixing section is provided with a first liquid inlet, a first gas-liquid mixture outlet and a plurality of mounting holes, and the first liquid inlet is communicated with the first liquid outlet; the plurality of air inlet spray pipes are arranged at the plurality of mounting holes; the gas dispersion section is provided with a second gas-liquid mixture inlet and a second gas-liquid mixture outlet, the second gas-liquid mixture inlet is communicated with the first gas-liquid mixture outlet, and the second gas-liquid mixture outlet is communicated with the first gas-liquid mixture inlet. The hydrometallurgy reaction device can effectively improve the dissolved oxygen content of liquid, so that the hydrometallurgy reaction device has the advantages of high oxygen utilization rate, short reaction time and the like, and can be used for working conditions with relatively large throughput.

Description

Technical Field

[0001] The present invention relates to the field of hydrometallurgy, and in particular to a hydrometallurgical reaction device and an operation method thereof. Background Art

[0002] The oxidation leaching reaction and impurity removal reaction in hydrometallurgy consume a large amount of oxygen. In the related art, the stirring shaft air intake method is used to provide oxygen. This oxygen supply method can only provide large-diameter bubbles, resulting in low dissolved oxygen content in the liquid and low oxygen utilization rate. In addition, due to the diameter of the stirring shaft, the stirring shaft air intake method cannot be used in working conditions with large ventilation volume. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides a hydrometallurgical reaction device and an operation method thereof.

[0004] The hydrometallurgical reaction device of the present invention comprises: a normal pressure reaction tank body, the normal pressure reaction tank body having a normal pressure reaction chamber and a first liquid outlet and a first gas-liquid mixture inlet communicated with the normal pressure reaction chamber; an agitator, the agitator being arranged in the normal pressure reaction chamber; and a gas disperser, the gas disperser comprising: a gas-liquid premixing section, the gas-liquid premixing section having a first liquid inlet, a first gas-liquid mixture outlet and a plurality of mounting holes, the first liquid inlet being communicated with the first liquid outlet, the plurality of mounting holes being arranged at intervals in at least one of an extension direction and a circumferential direction of the gas-liquid premixing section, and the plurality of mounting holes being located between the first liquid inlet and the first gas-liquid mixture outlet in the extension direction of the gas-liquid premixing section; a plurality of air intake nozzles, the plurality of air intake nozzles being arranged at the plurality of mounting holes in a one-to-one correspondence; and a gas dispersion section, the gas dispersion section having a second gas-liquid mixture inlet and a second gas-liquid mixture outlet, the second gas-liquid mixture inlet being communicated with the first gas-liquid mixture outlet, and the second gas-liquid mixture outlet being communicated with the first gas-liquid mixture inlet.

[0005] The hydrometallurgical reaction device of the present invention can effectively increase the dissolved oxygen content of the liquid, thereby having the advantages of high oxygen utilization rate and short reaction time, and can be used in working conditions with large ventilation volume.

[0006] Optionally, the first liquid outlet is arranged at the upper part of the wall of the atmospheric pressure reaction chamber, and the hydrometallurgical reaction device further includes an overflow baffle, which is arranged at the upper part of the wall of the atmospheric pressure reaction chamber, and the overflow baffle is opposite to the first liquid outlet in the horizontal direction.

[0007] Optionally, the hydrometallurgical reaction device further includes: an external overflow tube, the external overflow tube having a gas outlet, a second liquid inlet and a second liquid outlet, the second liquid outlet is located below the second liquid inlet, the second liquid inlet is located below the gas outlet, and the second liquid inlet is connected to the first liquid outlet; and a circulation pump, the inlet of the circulation pump is connected to the second liquid outlet, and the outlet of the circulation pump is connected to the first liquid inlet.

[0008] Optionally, the gas disperser further comprises a liquid inlet section, wherein the liquid inlet section has an overflow port, a third liquid inlet and a third liquid outlet, wherein the third liquid inlet is connected to the first liquid outlet, and the third liquid outlet is connected to the first liquid inlet.

[0009] Optionally, the plurality of mounting holes constitute a plurality of mounting hole groups, the plurality of mounting hole groups are spaced apart in the extension direction of the gas-liquid premixing section, and each of the mounting hole groups includes a plurality of mounting holes spaced apart in the circumferential direction of the gas-liquid premixing section; and / or the gas-liquid premixing section includes a first sub-tube and a second sub-tube, the first sub-tube having a third gas-liquid mixture outlet and the first liquid inlet, the second sub-tube having a third gas-liquid mixture inlet and the first gas-liquid mixture outlet, the third gas-liquid mixture outlet being connected to the third gas-liquid mixture inlet, wherein the inner diameter of the second sub-tube is larger than the inner diameter of the first sub-tube, the first sub-tube having a plurality of mounting holes spaced apart in at least one of its extension direction and circumferential direction, and the second sub-tube having a plurality of mounting holes spaced apart in at least one of its extension direction and circumferential direction.

[0010] Optionally, the gas disperser further includes a pressure stabilizing section, the pressure stabilizing section having a fourth gas-liquid mixture inlet and a fourth gas-liquid mixture outlet, the fourth gas-liquid mixture inlet is connected to the first gas-liquid mixture outlet, the fourth gas-liquid mixture outlet is connected to the second gas-liquid mixture inlet, and the pressure stabilizing section is provided with a pressure detector, a regulating valve and a switch valve.

[0011] Optionally, there are two first gas-liquid mixture inlets, which are arranged opposite to each other in the horizontal direction, and each of the first gas-liquid mixture inlets is located below the agitator, and the gas dispersion section includes: a venturi tube, which has a fifth gas-liquid mixture outlet and the second gas-liquid mixture inlet; a three-way pipe fitting, which has a first port, a second port and a third port, and the first port is connected to the fifth gas-liquid mixture outlet; a first conveying pipe, one end of the first conveying pipe is connected to the second port, and the other end of the first conveying pipe constitutes the second gas-liquid mixture outlet and is connected to one first gas-liquid mixture inlet; and a second conveying pipe, one end of the second conveying pipe is connected to the third port, and the other end of the second conveying pipe constitutes the second gas-liquid mixture outlet and is connected to another first gas-liquid mixture inlet.

[0012] Optionally, each of the air intake nozzles includes a main body section and a contraction section, one end of the contraction section is connected to the main body section, and the other end of the contraction section constitutes the jet port, and the contraction section extends obliquely from the main body section toward the first gas-liquid mixture outlet along the extension direction of the gas-liquid premixing section, wherein a plurality of the air intake nozzles constitute a plurality of air intake nozzle groups, and a plurality of the air intake nozzle groups are arranged at intervals in the extension direction of the gas-liquid premixing section, and each of the air intake nozzle groups includes a plurality of the air intake nozzles arranged at intervals in the circumferential direction of the gas-liquid premixing section, and the center lines of the jet ports of the plurality of air intake nozzles of each air intake nozzle group are spaced apart.

[0013] Optionally, the hydrometallurgical reaction device is a hydrometallurgical leaching device, the atmospheric pressure reaction tank body further has a hydrogen outlet, and the hydrogen outlet is connected to the atmospheric pressure reaction chamber; or the hydrometallurgical reaction device is a hydrometallurgical impurity removal device.

[0014] The operating method of the hydrometallurgical reaction device of the present invention comprises the following steps:

[0015] The liquid in the atmospheric pressure reaction chamber of the atmospheric pressure reaction tank body is transported to the gas-liquid premixing section of the gas disperser, and the oxygen-containing gas is sprayed into the gas-liquid premixing section at a speed of 200m / s-400m / s by the air inlet nozzle, so that the oxygen-containing gas is sheared into micro-nano bubbles by the liquid, and a gas-liquid mixture is obtained;

[0016] The gas-liquid mixture is returned to the normal pressure reaction chamber through the gas dispersion section of the gas disperser.

[0017] The operating method of the hydrometallurgical reaction device of the present invention can effectively increase the dissolved oxygen content of the liquid, thereby having the advantages of high oxygen utilization rate and short reaction time, and can be used in working conditions with large ventilation volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a hydrometallurgical reaction device according to an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of a gas disperser of a hydrometallurgical reaction device according to an embodiment of the present invention;

[0020] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0021] Figure 4 yes Figure 2 A cross-sectional view along the BB direction;

[0022] Figure 5 yes Figure 2 A cross-sectional view along the CC direction;

[0023] Figure 6 yes Figure 2 A magnified view of the D region in FIG.

[0024] Figure 7 It is a schematic diagram of the partial structure of a normal pressure reaction tank body of a hydrometallurgical reaction device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0026] The following describes a hydrometallurgical reaction device 100 according to an embodiment of the present invention with reference to the accompanying drawings. Figure 1-Figure 7 As shown, the hydrometallurgical reaction device 100 according to an embodiment of the present invention includes a normal pressure reaction tank body 1, an agitator 2 and a gas disperser 3.

[0027] The atmospheric pressure reaction tank body 1 has an atmospheric pressure reaction chamber 11, a first liquid outlet 12 and a first gas-liquid mixture inlet 13, and the first liquid outlet 12 and the first gas-liquid mixture inlet 13 are both connected to the atmospheric pressure reaction chamber 11. The agitator 2 is arranged in the atmospheric pressure reaction chamber 11.

[0028] The gas disperser 3 includes a gas-liquid premixing section 31, a gas dispersion section 33 and a plurality of air inlet nozzles 32. The gas-liquid premixing section 31 has a first liquid inlet 3111, a first gas-liquid mixture outlet 3121 and a plurality of mounting holes 313, and the first liquid inlet 3111 is connected to the first liquid outlet 12. The plurality of mounting holes 313 are arranged at intervals in at least one of the extension direction and the circumferential direction of the gas-liquid premixing section 31, and the plurality of mounting holes 313 are located between the first liquid inlet 3111 and the first gas-liquid mixture outlet 3121 in the extension direction of the gas-liquid premixing section 31. The plurality of air inlet nozzles 32 are arranged at the plurality of mounting holes 313 in a one-to-one correspondence. The gas dispersion section 33 has a second gas-liquid mixture inlet 3311 and a second gas-liquid mixture outlet 335, and the second gas-liquid mixture inlet 3311 is connected to the first gas-liquid mixture outlet 3121, and the second gas-liquid mixture outlet 335 is connected to the first gas-liquid mixture inlet 13.

[0029] The working process of the hydrometallurgical reaction device 100 is briefly described below. The liquid in the atmospheric pressure reaction chamber 11 enters the gas-liquid premixing section 31 through the first liquid outlet 12 and the first liquid inlet 3111 in turn. The oxygen-containing gas is sprayed into the gas-liquid premixing section 31 at a high speed of 200m / s-400m / s through multiple air inlet nozzles 32, and the oxygen-containing gas and liquid are mixed in the gas-liquid premixing section 31 to obtain a gas-liquid mixture. Since there is a great speed difference between the oxygen-containing gas and the liquid, the liquid can quickly shear the oxygen-containing gas into micro-nano bubbles, thereby increasing the gas-liquid contact area to increase the dissolved oxygen content of the liquid. In other words, a part of the oxygen-containing gas bubbles is a micron-level bubble, and a part of the oxygen-containing gas bubbles is a nano-level bubble.

[0030] Moreover, by utilizing a plurality of air inlet nozzles 32, the oxygen-containing gas can be divided into multiple paths to enter the gas-liquid premixing section 31, thereby not only greatly increasing the total flow rate of the oxygen-containing gas so as to further increase the dissolved oxygen content (dissolved oxygen concentration) of the liquid after the oxygen-containing gas is sheared into micro-nano bubbles, but also effectively increasing the turbulence degree of the liquid in the gas-liquid premixing section 31 so as to further reduce the size of the oxygen-containing gas bubbles in the liquid, thereby further increasing the gas-liquid contact area to further increase the dissolved oxygen content of the liquid, and making the oxygen-containing gas bubbles more evenly dispersed in the liquid, so as to better carry out the chemical reaction.

[0031] Subsequently, the gas-liquid mixture enters the gas dispersion section 33, in which the liquid further shears the oxygen-containing gas bubbles to further reduce the size of the oxygen-containing gas bubbles in the liquid, thereby further increasing the gas-liquid contact area to further increase the dissolved oxygen content of the liquid. Then, the gas-liquid mixture enters the normal pressure reaction chamber 11 through the second gas-liquid mixture outlet 335 and the first gas-liquid mixture inlet 13 in sequence. The gas-liquid mixture undergoes a chemical reaction in the normal pressure reaction chamber 11. Since the liquid has a high dissolved oxygen content, the oxygen utilization rate can be effectively improved and the reaction time can be shortened.

[0032] Therefore, the hydrometallurgical reaction device 100 according to the embodiment of the present invention can effectively increase the dissolved oxygen content of the liquid, thereby having the advantages of high oxygen utilization rate, short reaction time, etc., and can be used in working conditions with large ventilation volume.

[0033] like Figure 1-Figure 7 As shown, the hydrometallurgical reaction device 100 according to an embodiment of the present invention includes a normal pressure reaction tank body 1, an agitator 2, an external overflow tube 5, a circulation pump 6 and a gas disperser 3. The normal pressure reaction tank body 1 has a normal pressure reaction chamber 11, a first liquid outlet 12 and a first gas-liquid mixture inlet 13, and the first liquid outlet 12 and the first gas-liquid mixture inlet 13 are both connected to the normal pressure reaction chamber 11.

[0034] like Figure 1 As shown, the first liquid outlet 12 is arranged at the upper part of the wall surface of the atmospheric pressure reaction chamber 11, and the hydrometallurgical reaction device 100 further includes an overflow baffle 41, which is arranged at the upper part of the wall surface of the atmospheric pressure reaction chamber 11, and the overflow baffle 41 is opposite to the first liquid outlet 12 in the horizontal direction. By arranging the first liquid outlet 12 at the upper part of the atmospheric pressure reaction chamber 11 and arranging the overflow baffle 41 opposite to the first liquid outlet 12 in the horizontal direction, the solid matter content in the liquid flowing out of the first liquid outlet 12 can be effectively reduced, so as to effectively reduce the wear of the solid matter in the liquid on the circulation pump 6, the gas disperser 3, etc.

[0035] like Figure 1 As shown, the external overflow tube 5 has a gas outlet, a second liquid inlet 51 and a second liquid outlet 52, and the second liquid inlet 51 is connected to the first liquid outlet 12. The inlet of the circulation pump 6 is connected to the second liquid outlet 52, and the outlet of the circulation pump 6 is connected to the first liquid inlet 3111. The second liquid outlet 52 is located below the second liquid inlet 51, and the second liquid inlet 51 is located below the gas outlet. In other words, the second liquid inlet 51 is located between the second liquid outlet 52 and the gas outlet in the up-down direction. Figure 1 As shown by arrow E in FIG.

[0036] By locating the second liquid outlet 52 below the second liquid inlet 51, when the liquid in the external overflow tube 5 has a certain height, the liquid at the second liquid outlet 52 has a certain pressure, so as to facilitate the circulation pump 6 to transport the liquid. In addition, by locating the second liquid outlet 52 below the second liquid inlet 51, the gas carried in the liquid flowing out of the first liquid outlet 12 can be effectively removed, so as to effectively avoid cavitation, so as to extend the service life of the circulation pump 6. The removed gas is discharged from the external overflow tube 5 from the gas outlet.

[0037] In addition, by locating the second liquid inlet 51 above the second liquid outlet 52, it is convenient to connect the second liquid inlet 51 with the first liquid outlet 12. Figure 1 As shown, the first liquid outlet 12 opens obliquely downward, and the second liquid inlet 51 opens obliquely upward, thereby making it easier to connect the second liquid inlet 51 with the first liquid outlet 12.

[0038] like Figure 1-Figure 6 As shown, the gas disperser 3 includes a liquid inlet section 34 , a gas-liquid premixing section 31 , a pressure stabilizing section 35 , a gas dispersion section 33 and a plurality of gas inlet nozzles 32 .

[0039] The liquid inlet section 34 has an overflow port 343, a third liquid inlet 341 and a third liquid outlet 342, and the third liquid inlet 341 is connected to the first liquid outlet 12. Optionally, the third liquid inlet 341 is connected to the outlet of the circulation pump 6, so that the third liquid inlet 341 is connected to the first liquid outlet 12 through the circulation pump 6 and the external overflow cylinder 5.

[0040] By providing the liquid inlet section 34 and the overflow port 343 on the liquid inlet section 34, it is possible to ensure that the liquid fills the gas-liquid premixing section 31 before the oxygen-containing gas is sprayed into the gas-liquid premixing section 31, so that the liquid can better shear the oxygen-containing gas to obtain micro-nano bubbles. In addition, by providing the liquid inlet section 34, it is more convenient to provide the overflow port 343 and the third liquid inlet 341.

[0041] Optionally, the liquid inlet section 34 further has a water washing port 344, so that the gas disperser 3 can be cleaned more conveniently.

[0042] like Figure 1-Figure 4 As shown, a plurality of mounting holes 313 constitute a plurality of mounting hole groups, and the plurality of mounting hole groups are spaced apart in the extension direction of the gas-liquid premixing section 31 , and each of the mounting hole groups includes a plurality of mounting holes 313 , and the plurality of mounting holes 313 in each of the mounting hole groups are spaced apart in the circumferential direction of the gas-liquid premixing section 31 .

[0043] Correspondingly, the plurality of intake nozzles 32 constitute a plurality of intake nozzle groups, and the plurality of intake nozzle groups are arranged at intervals in the extension direction of the gas-liquid premixing section 31 , and each of the intake nozzle groups includes a plurality of intake nozzles 32 arranged at intervals in the circumferential direction of the gas-liquid premixing section 31 .

[0044] This can not only further increase the total flow rate of the oxygen-containing gas sprayed into the gas-liquid premixing section 31, but also more effectively increase the turbulence degree of the liquid in the gas-liquid premixing section 31, so as to further reduce the size of the oxygen-containing gas bubbles in the liquid, thereby further increasing the gas-liquid contact area to further increase the dissolved oxygen content of the liquid, and make the oxygen-containing gas bubbles more evenly dispersed in the liquid, so that the chemical reaction can proceed better.

[0045] Optionally, the center lines of the jets 321 of the multiple air intake nozzles 32 of each air intake nozzle group are spaced apart, that is, the center line of the jets 321 of any air intake nozzle 32 of each air intake nozzle group does not intersect with the center lines of the jets 321 of other air intake nozzles 32. This can avoid collision of the oxygen-containing gas injected by the multiple air intake nozzles 32 of the air intake nozzle group, avoid loss of kinetic energy of the oxygen-containing gas, and ensure that the liquid effectively shears the oxygen-containing gas.

[0046] like Figure 1-Figure 4 As shown, the gas-liquid premixing section 31 includes a first sub-tube 311 and a second sub-tube 312. The first sub-tube 311 has a third gas-liquid mixture outlet 3112 and a first liquid inlet 3111, and the second sub-tube 312 has a third gas-liquid mixture inlet 3122 and a first gas-liquid mixture outlet 3121. The first liquid inlet 3111 of the first sub-tube 311 is communicated with the third liquid outlet 342 of the liquid inlet section 34, and the third gas-liquid mixture outlet 3112 of the first sub-tube 311 is communicated with the third gas-liquid mixture inlet 3122 of the second sub-tube 312. The inner diameter of the second sub-tube 312 is greater than the inner diameter of the first sub-tube 311.

[0047] By making the gas-liquid premixing section 31 include the first sub-tube 311 and the second sub-tube 312, the oxygen-containing gas can be sprayed into the gas-liquid premixing section 31 in batches, so that the liquid in the gas-liquid premixing section 31 can shear the oxygen-containing gas more fully, so as to further increase the dissolved oxygen content of the liquid, and make the oxygen-containing gas bubbles more evenly dispersed in the liquid, so that the chemical reaction can be carried out better. In addition, by making the inner diameter of the second sub-tube 312 larger than the inner diameter of the first sub-tube 311, the oxygen-containing gas can be sprayed into the second sub-tube 312 more easily, and the gas disperser 3 and the hydrometallurgical reaction device 100 can operate more stably.

[0048] like Figure 1-Figure 4As shown, the first sub-tube 311 has a plurality of mounting holes 313 spaced apart in at least one of its extending direction and circumferential direction, so that a plurality of air intake nozzles 32 can be mounted on the first sub-tube 311. The second sub-tube 312 has a plurality of mounting holes 313 spaced apart in at least one of its extending direction and circumferential direction, so that a plurality of air intake nozzles 32 can be mounted on the second sub-tube 312.

[0049] like Figure 6 As shown, each air intake nozzle 32 includes a body section 322 and a contraction section 323, one end of the contraction section 323 is connected to the body section 322, and the other end of the contraction section 323 has an air injection port 321. The contraction section 323 extends obliquely from the body section 322 toward the first gas-liquid mixture outlet 3121 along the extension direction of the gas-liquid premixing section 31. In this way, the structure of the air intake nozzle 32 can be made more reasonable, and the oxygen-containing gas injected into the gas-liquid premixing section 31 can also flow toward the first gas-liquid mixture outlet 3121, so as to improve the fluidity of the gas-liquid mixture.

[0050] The jet port 321 of each air intake nozzle 32 is located in the gas-liquid premixing section 31, or the jet port 321 of each air intake nozzle 32 can be located outside the gas-liquid premixing section 31 and communicated with the space in the gas-liquid premixing section 31 through the mounting hole 313. In addition, the jet port 321 of each air intake nozzle 32 is flush with the inner wall surface of the gas-liquid premixing section 31, thereby not only preventing the air intake nozzle 32 from obstructing the flow of liquid, but also facilitating the air intake nozzle 32 to spray the oxygen-containing gas into the gas-liquid premixing section 31.

[0051] Optionally, the air inlet nozzle 32 sprays the oxygen-containing gas into the gas-liquid premixing section 31 at a speed of 250 m / s-350 m / s. Thus, the liquid can better shear the oxygen-containing gas to further reduce the size of the oxygen-containing gas bubbles in the liquid, thereby further increasing the gas-liquid contact area to further increase the dissolved oxygen content of the liquid.

[0052] Further optionally, the air inlet nozzle 32 sprays the oxygen-containing gas into the gas-liquid premixing section 31 at a speed of 340 m / s-350 m / s. Thus, the liquid can better shear the oxygen-containing gas to further reduce the size of the oxygen-containing gas bubbles in the liquid, thereby further increasing the gas-liquid contact area to further increase the dissolved oxygen content of the liquid.

[0053] Further optionally, the air inlet nozzle 32 sprays the oxygen-containing gas at a speed of 350 m / s into the gas-liquid premixing section 31. Thus, the liquid can better shear the oxygen-containing gas to further reduce the size of the oxygen-containing gas bubbles in the liquid, thereby further increasing the gas-liquid contact area to further increase the dissolved oxygen content of the liquid.

[0054] like Figure 2As shown, the pressure stabilizing section 35 has a fourth gas-liquid mixture inlet 351 and a fourth gas-liquid mixture outlet 352. The fourth gas-liquid mixture inlet 351 of the pressure stabilizing section 35 is connected to the first gas-liquid mixture outlet 3121 of the second sub-tube 312 (gas-liquid premixing section 31), and the fourth gas-liquid mixture outlet 352 of the pressure stabilizing section 35 is connected to the second gas-liquid mixture inlet 3311 of the gas dispersion section 33. The pressure stabilizing section 35 is provided with a pressure detector 355, a regulating valve 353 and a switch valve 354. Thus, the pressure of the gas-liquid mixture in the gas disperser 3 can be accurately and timely adjusted, so that the gas disperser 3 and the hydrometallurgical reaction device 100 can operate more stably.

[0055] like Figure 7 As shown, there are two first gas-liquid mixture inlets 13, which are arranged opposite to each other in the horizontal direction. By providing two first gas-liquid mixture inlets 13, a large flow of gas-liquid mixture can be more conveniently input into the normal pressure reaction chamber 11.

[0056] like Figure 1 , Figure 2 and Figure 5 As shown, the gas dispersion section 33 includes a venturi tube 331, a three-way pipe 332, a first delivery pipe 333 and a second delivery pipe 334. The venturi tube 331 has a fifth gas-liquid mixture outlet 3312 and a second gas-liquid mixture inlet 3311, and the second gas-liquid mixture inlet 3311 of the venturi tube 331 is connected to the fourth gas-liquid mixture outlet 352 of the pressure stabilizing section 35.

[0057] The three-way pipe fitting 332 has a first port, a second port, and a third port, and the first port of the three-way pipe fitting 332 is connected to the fifth gas-liquid mixture outlet 3312 of the venturi tube 331. One end of the first delivery pipe 333 is connected to the second port of the three-way pipe fitting 332, and the other end of the first delivery pipe 333 constitutes a second gas-liquid mixture outlet 335 and is connected to one first gas-liquid mixture inlet 13. One end of the second delivery pipe 334 is connected to the third port of the three-way pipe fitting 332, and the other end of the second delivery pipe 334 constitutes a second gas-liquid mixture outlet 335 and is connected to another first gas-liquid mixture inlet 13.

[0058] The gas-liquid mixture leaving the gas-liquid premixing section 31 returns to the normal pressure reaction chamber 11 through the pressure stabilizing section 35, the venturi tube 331, the three-way pipe 332, the first delivery pipe 333 (the second delivery pipe 334) in sequence.

[0059] Each first gas-liquid mixture inlet 13 is located below the agitator 2. Optionally, the agitator 2 includes a stirring shaft 21 and a stirring paddle 22, the stirring shaft 21 is located in the normal pressure reaction chamber 11, and the stirring paddle 22 is arranged on the stirring shaft 21, that is, the stirring paddle 22 is located in the normal pressure reaction chamber 11, and the first gas-liquid mixture inlet 13 is located below the stirring paddle 22. Thus, the stirring paddle 22 can shear the oxygen-containing gas bubbles in the liquid, thereby further reducing the size of the oxygen-containing gas bubbles in the liquid, and further increasing the gas-liquid contact area to further increase the dissolved oxygen content of the liquid, and make the oxygen-containing gas bubbles more evenly dispersed in the liquid.

[0060] like Figure 7 As shown, the hydrometallurgical reaction device 100 further includes a baffle 42, which is arranged on the wall surface of the atmospheric pressure reaction chamber 11, and the baffle 42 extends in the up-down direction. By arranging the baffle 42 in the atmospheric pressure reaction chamber 11, the turbulence degree of the liquid in the atmospheric pressure reaction chamber 11 can be increased, so that the oxygen-containing gas bubbles are more evenly dispersed in the liquid, so that the chemical reaction can be carried out better.

[0061] In one example of the present invention, the hydrometallurgical reaction device 100 is a hydrometallurgical leaching device, and the atmospheric pressure reaction tank body 1 also has a hydrogen outlet, which is connected to the atmospheric pressure reaction chamber 11. Thus, the hydrometallurgical reaction device 100 can perform wet leaching on the raw material containing the metal phase. The hydrogen generated by the reaction of the metal and the acid can be discharged through the hydrogen outlet to improve the safety of the hydrometallurgical reaction device 100.

[0062] Since hydrogen will be generated when wet leaching raw materials containing metal phases, it is impossible to use a high-pressure reaction device to wet leaching raw materials containing metal phases (high pressure makes it impossible to discharge hydrogen, which is prone to explosion). However, the solubility of oxygen under normal pressure is low. By using the hydrometallurgical reaction device 100 of the present invention, the solubility of oxygen can be greatly improved under normal pressure, so as to greatly increase the dissolved oxygen content of the liquid in the normal pressure reaction chamber 11 of the hydrometallurgical reaction device 100.

[0063] Alternatively, the raw material containing the metal phase may be a nickel alloy, a cobalt alloy, a copper alloy, nickel matte, copper matte, nickel iron, or the like.

[0064] For example, the hydrometallurgical reaction device 100 is used to oxidatively leach the copper-nickel sulfide material. The reaction temperature of the oxidative leaching is 85 degrees Celsius to 90 degrees Celsius, and the pH of the oxidative leaching reaction is 1.4-1.8. After the oxidative leaching reaction is carried out for 2 hours, the nickel-cobalt leaching rate is greater than or equal to 80%, and the oxygen utilization rate is greater than or equal to 70%. If the stirring shaft air intake method in the prior art is adopted, after the oxidative leaching reaction is carried out for 8 hours, the nickel-cobalt leaching rate is about 40%, and the oxygen utilization rate is about 15%.

[0065] In another example of the present invention, the hydrometallurgical reaction device 100 is a hydrometallurgical impurity removal device.

[0066] For example, the cobalt sulfate pre-iron removal solution is removed by the hydrometallurgical reaction device 100, and the concentration of ferrous iron in the cobalt sulfate pre-iron removal solution is about 3g / L. The reaction temperature of the impurity removal reaction is 70 degrees Celsius-75 degrees Celsius, and the pH of the impurity removal reaction is 3.5-4.0. After the impurity removal reaction is carried out for about 1.5 hours, the concentration of ferrous iron in the cobalt sulfate solution is reduced to 0.05g / L, and the oxygen utilization rate is greater than or equal to 80%. If the stirring shaft air intake method in the prior art is adopted, it takes more than 4 hours to reduce the concentration of ferrous iron in the cobalt sulfate solution to 0.05g / L, and the oxygen utilization rate is about 20%.

[0067] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A hydrometallurgical reaction device, characterized in that: include: A normal pressure reaction tank body, the normal pressure reaction tank body having a normal pressure reaction chamber and a first liquid outlet and a first gas-liquid mixture inlet communicated with the normal pressure reaction chamber; A stirrer, the stirrer is arranged in the normal pressure reaction chamber; as well as A gas disperser, comprising: a gas-liquid premixing section, the gas-liquid premixing section having a first liquid inlet, a first gas-liquid mixture outlet and a plurality of mounting holes, the first liquid inlet being in communication with the first liquid outlet, the plurality of mounting holes being arranged at intervals in at least one of an extension direction and a circumferential direction of the gas-liquid premixing section, and the plurality of mounting holes being located between the first liquid inlet and the first gas-liquid mixture outlet in the extension direction of the gas-liquid premixing section; A plurality of air intake nozzles, wherein the plurality of air intake nozzles are arranged at the plurality of mounting holes in a one-to-one correspondence; and The gas dispersion section has a second gas-liquid mixture inlet and a second gas-liquid mixture outlet, wherein the second gas-liquid mixture inlet is connected to the first gas-liquid mixture outlet, and the second gas-liquid mixture outlet is connected to the first gas-liquid mixture inlet.

2. The hydrometallurgical reaction device according to claim 1, characterized in that: The first liquid outlet is arranged at the upper part of the wall surface of the atmospheric pressure reaction chamber, and the hydrometallurgical reaction device further includes an overflow baffle, which is arranged at the upper part of the wall surface of the atmospheric pressure reaction chamber, and the overflow baffle is opposite to the first liquid outlet in the horizontal direction.

3. The hydrometallurgical reaction device according to claim 2, characterized in that: Further including: an external overflow tube, the external overflow tube having a gas outlet, a second liquid inlet and a second liquid outlet, the second liquid outlet is located below the second liquid inlet, the second liquid inlet is located below the gas outlet, and the second liquid inlet is connected to the first liquid outlet; and A circulation pump, wherein the inlet of the circulation pump is communicated with the second liquid outlet, and the outlet of the circulation pump is communicated with the first liquid inlet.

4. The hydrometallurgical reaction device according to claim 1, characterized in that: The gas disperser further includes a liquid inlet section having an overflow port, a third liquid inlet and a third liquid outlet. The third liquid inlet is communicated with the first liquid outlet, and the third liquid outlet is communicated with the first liquid inlet.

5. The hydrometallurgical reaction device according to claim 1, characterized in that: The plurality of mounting holes constitute a plurality of mounting hole groups, the plurality of mounting hole groups are arranged at intervals in the extension direction of the gas-liquid premixing section, and each of the mounting hole groups includes a plurality of mounting holes arranged at intervals in the circumferential direction of the gas-liquid premixing section; and / or The gas-liquid premixing section includes a first sub-tube and a second sub-tube, the first sub-tube having a third gas-liquid mixture outlet and the first liquid inlet, the second sub-tube having a third gas-liquid mixture inlet and the first gas-liquid mixture outlet, the third gas-liquid mixture outlet being connected to the third gas-liquid mixture inlet, wherein the inner diameter of the second sub-tube is larger than the inner diameter of the first sub-tube, the first sub-tube having a plurality of mounting holes spaced apart in at least one of its extension direction and circumferential direction, and the second sub-tube having a plurality of mounting holes spaced apart in at least one of its extension direction and circumferential direction.

6. The hydrometallurgical reaction device according to claim 1, characterized in that: The gas disperser further includes a pressure stabilizing section, which has a fourth gas-liquid mixture inlet and a fourth gas-liquid mixture outlet, the fourth gas-liquid mixture inlet is connected to the first gas-liquid mixture outlet, and the fourth gas-liquid mixture outlet is connected to the second gas-liquid mixture inlet, and the pressure stabilizing section is provided with a pressure detector, a regulating valve and a switch valve.

7. The hydrometallurgical reaction device according to claim 1, characterized in that: There are two first gas-liquid mixture inlets, which are arranged opposite to each other in the horizontal direction, and each first gas-liquid mixture inlet is located below the agitator. The gas dispersion section includes: a venturi tube having a fifth gas-liquid mixture outlet and the second gas-liquid mixture inlet; A three-way pipe fitting, the three-way pipe fitting having a first port, a second port and a third port, the first port being in communication with the fifth gas-liquid mixture outlet; a first delivery pipe, one end of which is in communication with the second port, and the other end of which constitutes the second gas-liquid mixture outlet and is in communication with a first gas-liquid mixture inlet; and A second delivery pipe, one end of the second delivery pipe is communicated with the third port, and the other end of the second delivery pipe constitutes the second gas-liquid mixture outlet and is communicated with another first gas-liquid mixture inlet.

8. The hydrometallurgical reaction device according to claim 5, characterized in that: Each of the air intake nozzles includes a main body section and a contraction section, one end of the contraction section is connected to the main body section, and the other end of the contraction section constitutes the jet port, and the contraction section extends obliquely from the main body section toward the first gas-liquid mixture outlet along the extension direction of the gas-liquid premixing section, wherein a plurality of the air intake nozzles constitute a plurality of air intake nozzle groups, and a plurality of the air intake nozzle groups are arranged at intervals in the extension direction of the gas-liquid premixing section, and each of the air intake nozzle groups includes a plurality of the air intake nozzles arranged at intervals in the circumferential direction of the gas-liquid premixing section, and the center lines of the jet ports of the plurality of the air intake nozzles of each air intake nozzle group are spaced apart.

9. The hydrometallurgical reaction device according to any one of claims 1 to 8, characterized in that: The hydrometallurgical reaction device is a hydrometallurgical leaching device, and the atmospheric pressure reaction tank body further has a hydrogen outlet, and the hydrogen outlet is connected to the atmospheric pressure reaction chamber; or The hydrometallurgical reaction device is a hydrometallurgical impurity removal device.

10. An operating method of a hydrometallurgical reaction device according to any one of claims 1 to 8, characterized in that: The following steps are involved: The liquid in the atmospheric pressure reaction chamber of the atmospheric pressure reaction tank body is transported to the gas-liquid premixing section of the gas disperser, and the oxygen-containing gas is sprayed into the gas-liquid premixing section at a speed of 200m / s-400m / s by the air inlet nozzle, so that the oxygen-containing gas is sheared into micro-nano bubbles by the liquid, and a gas-liquid mixture is obtained; The gas-liquid mixture is returned to the normal pressure reaction chamber through the gas dispersion section of the gas disperser.

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