Hydrometallurgy reaction device

Abstract

The utility model discloses a hydrometallurgy reaction device. The hydrometallurgy reaction device comprises a normal-pressure reaction tank body, the normal-pressure reaction tank body is provided with a normal-pressure reaction cavity, and a mounting hole is formed in the wall surface of the normal-pressure reaction cavity; the stirrer is arranged in the normal pressure reaction cavity; the gas inlet spray pipe is arranged at the mounting hole, the gas inlet spray pipe comprises a body section and a contraction section, one end of the contraction section is connected with the body section, the other end of the contraction section is provided with a gas spraying opening, at least one part of the contraction section is located in the normal-pressure reaction cavity, and the gas spraying opening is communicated with the gas spraying opening. The contraction section extends downwards in an inclined mode from the body section so that the air spraying opening can be opened in the downward inclined direction. The hydrometallurgy reaction device disclosed by the utility model can effectively improve the dissolved oxygen content of reaction liquid, so that the hydrometallurgy reaction device has the advantages of high oxygen utilization rate, short reaction time and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydrometallurgy, and in particular to a hydrometallurgy reaction device. BACKGROUND

[0002] The oxidation leaching reaction and the impurity removal reaction in hydrometallurgy need to consume a large amount of oxygen. In the related art, the oxygen is provided by a stirring shaft air inlet mode. This oxygen providing mode 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 limitation of the stirring shaft, the stirring shaft air inlet mode cannot be used in the working condition with a large amount of air supply. SUMMARY

[0003] The utility model aims at at least one of the technical problems in the related art to some extent. To this end, the embodiments of the utility model provide a hydrometallurgy reaction device.

[0004] The hydrometallurgy reaction device of the utility model includes: an atmospheric pressure reaction tank body, the atmospheric pressure reaction tank body has an atmospheric pressure reaction cavity, and the wall surface of the atmospheric pressure reaction cavity is provided with a mounting hole; a stirrer, the stirrer is arranged in the atmospheric pressure reaction cavity; and an air inlet nozzle, the air inlet nozzle is arranged at the mounting hole, the air inlet nozzle includes a body section and a contraction section, one end of the contraction section is connected with the body section, and the other end of the contraction section is provided with a gas injection port, wherein at least a part of the contraction section is located in the atmospheric pressure reaction cavity, the contraction section extends downwardly and obliquely from the body section, so that the gas injection port is open in the obliquely downward direction.

[0005] The hydrometallurgy reaction device of the utility model can effectively improve the dissolved oxygen content of the reaction liquid, thereby having the advantages of high oxygen utilization rate and short reaction time.

[0006] Optionally, the stirrer includes a stirring shaft and a stirring paddle, the stirring paddle is arranged on the stirring shaft, wherein the center line of the gas injection port intersects with the rotation axis of the stirring shaft at a first point, and the first point is located below the stirring paddle.

[0007] Optionally, the gas injection port is located below the stirring paddle; and / or the air inlet nozzle is a plurality of air inlet nozzles, and the plurality of air inlet nozzles are arranged at intervals along the circumference of the atmospheric pressure reaction cavity, wherein the center lines of the gas injection ports of the plurality of air inlet nozzles intersect with the rotation axis of the stirring shaft at the first point.

[0008] Optionally, the hydrometallurgy reaction device further includes a baffle, the baffle is arranged on the wall surface of the atmospheric pressure reaction cavity, the length direction of the baffle is consistent with the axial direction of the stirring shaft, and the gas injection port of the air inlet nozzle is located outside the inner edge of the baffle.

[0009] Optionally, the first part of the convergent section is located in the atmospheric reaction cavity, and a ratio of a size of the first part in a radial direction of the atmospheric reaction cavity to a size of the baffle in the radial direction of the atmospheric reaction cavity is (0.26-0.39):1.

[0010] Optionally, the baffle is a plurality of, and the gas inlet nozzle is a plurality of, wherein the plurality of gas inlet nozzles and the plurality of baffles are arranged alternately in a circumferential direction of the atmospheric reaction cavity, and the plurality of gas inlet nozzles and the plurality of baffles are matched one by one, wherein the convergent section of the gas inlet nozzle is adjacent to the matched baffle in the circumferential direction of the atmospheric reaction cavity, and the convergent section of the matched gas inlet nozzle and the baffle are spaced by 11-17 degrees in the circumferential direction of the atmospheric reaction cavity.

[0011] Optionally, an angle between an extension direction of the convergent section and a vertically downward direction is 40-70 degrees.

[0012] Optionally, the convergent section is frustoconical, and an angle between a generatrix of the convergent section and a center line of the convergent section is 5-8 degrees.

[0013] Optionally, the first part of the convergent section is located in the atmospheric reaction cavity, and a ratio of a size of the first part in a radial direction of the atmospheric reaction cavity to a size of the baffle in the radial direction of the atmospheric reaction cavity is (0.26-0.39):1.

[0014] Optionally, the hydrometallurgical reaction device is a hydrometallurgical leaching device, and the atmospheric reaction tank body further has a hydrogen outlet, and the hydrogen outlet is communicated with the atmospheric reaction cavity; or the hydrometallurgical reaction device is a hydrometallurgical impurity removal device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure schematic view of a hydrometallurgical reaction device according to an embodiment of the present application;

[0016] Figure 2 is Figure 1 is an enlarged view of an A area in

[0017] Figure 3 is a local structure schematic view of an atmospheric reaction tank body of a hydrometallurgical reaction device according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0019] A hydrometallurgical reaction device 100 according to an embodiment of the present application is described below with reference to the accompanying drawings. As shown in Figures 1-3 the hydrometallurgical reaction device 100 according to the embodiment of the present application comprises an atmospheric reaction tank body 1, a stirrer 2 and a gas disperser 3.

[0020] The atmospheric reaction tank body 1 has an atmospheric reaction cavity 11, and the wall surface of the atmospheric reaction cavity 11 is provided with a mounting hole 12. The stirrer 2 is arranged in the atmospheric reaction cavity 11, and the gas inlet nozzle 3 is arranged at the mounting hole 12.

[0021] The gas inlet nozzle 3 comprises a body section 32 and a contraction section 33, one end of the contraction section 33 is connected with the body section 32, and the other end of the contraction section 33 has a gas outlet 31. At least a part of the contraction section 33 is located in the atmospheric reaction cavity 11, and the contraction section 33 extends obliquely downward from the body section 32 so that the gas outlet 31 opens in an obliquely downward direction.

[0022] That is, the gas outlet 31 is located in the atmospheric reaction cavity 11, and the gas outlet 31 opens downward and inward. The "inward" refers to a direction toward the center of the atmospheric reaction cavity 11, and the inner-outer direction is shown by an arrow B in Figure 1 , and the up-down direction is shown by an arrow C in Figure 1 .

[0023] The hydrometallurgical reaction device 100 according to the embodiment of the present application is provided with the gas inlet nozzle 3 whose gas outlet 31 opens in an obliquely downward direction, so that the gas inlet nozzle 3 can be used to spray the oxygen-containing gas into the atmospheric reaction cavity 11 at a speed of 200 m / s-400 m / s to obtain a gas-liquid mixture. Since there is a great speed difference between the sprayed oxygen-containing gas and the reaction liquid in the atmospheric reaction cavity 11, the reaction liquid can shear the oxygen-containing gas into micro-nano bubbles, thereby increasing the gas-liquid contact area to improve the dissolved oxygen content of the reaction liquid. That is, part of the oxygen-containing gas bubbles is micron-sized bubbles, and part of the oxygen-containing gas bubbles is nano-sized bubbles.

[0024] By effectively improving the dissolved oxygen content of the reaction liquid, the oxygen utilization rate can be effectively improved, and the reaction time can be shortened. Moreover, by arranging the stirrer 2, the gas-liquid mixture in the atmospheric reaction cavity 11 can be stirred to make the oxygen-containing gas bubbles more uniformly and dispersedly distributed in the reaction liquid, so that the chemical reaction can be better carried out.

[0025] Therefore, the hydrometallurgical reaction device 100 according to the embodiment of the present application can effectively improve the dissolved oxygen content of the reaction liquid, thereby having the advantages of high oxygen utilization rate, short reaction time and the like.

[0026] As shown in Figures 1-3As shown, the hydrometallurgy reaction device 100 according to the embodiment of the utility model includes atmospheric pressure reaction tank body 1, agitator 2 and gas disperser 3. Atmospheric pressure reaction tank body 1 has atmospheric pressure reaction cavity 11, and the wall surface of atmospheric pressure reaction cavity 11 is provided with mounting hole 12. In addition, reaction liquid inlet, acid adding port, pH meter port, liquid level meter port, thermometer port, potentiometer port, dissolved oxygen meter port and the like can also be provided on the wall surface of atmospheric pressure reaction cavity 11 as required.

[0027] Agitator 2 is arranged in atmospheric pressure reaction cavity 11. Optionally, agitator 2 includes stirring shaft 21 and stirring paddle 22, and stirring paddle 22 is arranged on stirring shaft 21. As shown in Figure 1 As shown, stirring paddle 22 is located in the lower part of atmospheric pressure reaction cavity 11. Optionally, agitator 2 includes a plurality of stirring paddles 22, and the plurality of stirring paddles 22 are arranged on stirring shaft 21 in a spaced-apart manner along the up-down direction, and the lowermost stirring paddle 22 is located in the lower part of atmospheric pressure reaction cavity 11.

[0028] As shown in Figure 1 and Figure 2 Gas inlet nozzle 3 is arranged at mounting hole 12. For example, gas inlet nozzle 3 can be mounted at mounting hole 12 through flange. Gas inlet nozzle 3 includes body section 32 and contraction section 33, one end of contraction section 33 is connected with body section 32, and the other end of contraction section 33 has gas injection port 31. At least a part of contraction section 33 is located in atmospheric pressure reaction cavity 11, so that it is more convenient and easier to spray oxygen-containing gas (such as air) into the reaction liquid in atmospheric pressure reaction cavity 11. As shown in Figure 2 Part of contraction section 33 is located in atmospheric pressure reaction cavity 11, and the other part of contraction section 33 is located outside atmospheric pressure reaction cavity 11.

[0029] Contraction section 33 extends obliquely downward from body section 32, so that gas injection port 31 opens in the obliquely downward direction. In this way, oxygen-containing gas can be sprayed into the reaction liquid in atmospheric pressure reaction cavity 11 along the obliquely downward direction, so that not only the flow path of oxygen-containing gas in the reaction liquid can be prolonged to make the reaction liquid shear the oxygen-containing gas more fully and obtain more micro-nano bubbles, but also the flow path of oxygen-containing gas bubbles floating in the reaction liquid can be prolonged to make the oxygen in the oxygen-containing gas bubbles be used more fully and improve the oxygen utilization rate.

[0030] As shown in Figure 2 Gas inlet nozzle 3 is arranged obliquely, the upper end of contraction section 33 is connected with the lower end of body section 32, and the lower end of contraction section 33 has gas injection port 31. In this way, the structure of gas inlet nozzle 3 can be made more reasonable.

[0031] Optionally, the angle between the extension direction of the converging section 33 and the vertically downward direction is 40-70 degrees. In this way, not only can the flow path of the oxygen-containing gas in the reaction liquid be further lengthened, so that the reaction liquid can more fully shear the oxygen-containing gas and more micro-nano bubbles can be obtained, but also the flow path of the oxygen-containing gas bubbles floating in the reaction liquid can be further lengthened, so that the oxygen in the oxygen-containing gas bubbles can be more fully utilized and the oxygen utilization rate can be improved.

[0032] Further optionally, the angle between the extension direction of the converging section 33 and the vertically downward direction is 55-65 degrees. In this way, not only can the flow path of the oxygen-containing gas in the reaction liquid be further lengthened, so that the reaction liquid can more fully shear the oxygen-containing gas and more micro-nano bubbles can be obtained, but also the flow path of the oxygen-containing gas bubbles floating in the reaction liquid can be further lengthened, so that the oxygen in the oxygen-containing gas bubbles can be more fully utilized and the oxygen utilization rate can be improved.

[0033] Further optionally, the angle between the extension direction of the converging section 33 and the vertically downward direction is 60 degrees. In this way, not only can the flow path of the oxygen-containing gas in the reaction liquid be further lengthened, so that the reaction liquid can more fully shear the oxygen-containing gas and more micro-nano bubbles can be obtained, but also the flow path of the oxygen-containing gas bubbles floating in the reaction liquid can be further lengthened, so that the oxygen in the oxygen-containing gas bubbles can be more fully utilized and the oxygen utilization rate can be improved.

[0034] Optionally, the converging section 33 is frustoconical, and the angle between the generatrix of the converging section 33 and the center line of the converging section 33 is 5-8 degrees. In this way, the speed (flow rate) of the oxygen-containing gas ejected by the gas inlet nozzle 3 can be effectively improved, so that the reaction liquid can more effectively shear the oxygen-containing gas, so that more micro-nano bubbles can be obtained, and in turn the gas-liquid contact area can be increased to improve the dissolved oxygen content of the reaction liquid.

[0035] Further optionally, the angle between the generatrix of the converging section 33 and the center line of the converging section 33 is 7-8 degrees. In this way, the speed (flow rate) of the oxygen-containing gas ejected by the gas inlet nozzle 3 can be effectively improved, so that the reaction liquid can more effectively shear the oxygen-containing gas, so that more micro-nano bubbles can be obtained, and in turn the gas-liquid contact area can be increased to improve the dissolved oxygen content of the reaction liquid.

[0036] Further optionally, the angle between the generatrix of the converging section 33 and the center line of the converging section 33 is 7 degrees. In this way, the speed (flow rate) of the oxygen-containing gas ejected by the gas inlet nozzle 3 can be effectively improved, so that the reaction liquid can more effectively shear the oxygen-containing gas, so that more micro-nano bubbles can be obtained, and in turn the gas-liquid contact area can be increased to improve the dissolved oxygen content of the reaction liquid.

[0037] Optionally, the intake nozzle 3 injects oxygen-containing gas into the reaction liquid within the atmospheric pressure reaction chamber 11 at a speed of 250 m / s-350 m / s. This allows the reaction liquid to better shear the oxygen-containing gas, further reducing the size of the oxygen-containing gas bubbles in the reaction liquid, thereby further increasing the gas-liquid contact area and thus further improving the dissolved oxygen content of the reaction liquid.

[0038] Alternatively, the intake nozzle 3 injects oxygen-containing gas into the reaction liquid within the atmospheric pressure reaction chamber 11 at a speed of 340 m / s-350 m / s. This allows the reaction liquid to better shear the oxygen-containing gas, further reducing the size of the oxygen-containing gas bubbles in the reaction liquid, thereby further increasing the gas-liquid contact area and further improving the dissolved oxygen content of the reaction liquid.

[0039] Alternatively, the intake nozzle 3 injects oxygen-containing gas into the reaction liquid within the atmospheric pressure reaction chamber 11 at a speed of 350 m / s. This allows the reaction liquid to better shear the oxygen-containing gas, further reducing the size of the oxygen-containing gas bubbles in the reaction liquid, thereby further increasing the gas-liquid contact area and thus further improving the dissolved oxygen content of the reaction liquid.

[0040] Optionally, the centerline of the jet nozzle 31 intersects the rotation axis of the stirring shaft 21 at a first point, which is located below the impeller 22. This not only further extends the flow path of oxygen-containing gas bubbles rising in the reaction solution, so as to make fuller use of the oxygen in the oxygen-containing gas bubbles and improve the oxygen utilization rate, but also allows the impeller 22 to more thoroughly stir the oxygen-containing gas bubbles, so that the oxygen-containing gas bubbles are more evenly and diffusely distributed in the reaction solution, thereby further improving the oxygen utilization rate and the dissolved oxygen content (concentration) of the reaction solution.

[0041] The rotation axis of the stirring shaft 21 can coincide with the center line of the atmospheric pressure reaction chamber 11, so as to make the structure of the hydrometallurgical reaction device 100 more reasonable. The center line of the atmospheric pressure reaction chamber 11 extends in the vertical direction.

[0042] like Figure 1 As shown, the jet nozzle 31 is located below the agitator 22 to further ensure that the first point is located below the agitator 22. This not only further extends the flow path of the oxygen-containing gas bubbles in the reaction liquid, allowing for more efficient utilization of the oxygen in the gas bubbles and improving oxygen utilization, but also allows the agitator 22 to more thoroughly agitate the oxygen-containing gas bubbles, resulting in a more uniform and dispersed distribution of the gas bubbles in the reaction liquid, thereby further improving oxygen utilization and the dissolved oxygen content of the reaction liquid.

[0043] like Figure 1 and Figure 3As shown, the plurality of air inlet nozzles 3 are arranged along the circumference of the normal pressure reaction chamber 11. The center lines of the air injection ports 31 of the plurality of air inlet nozzles 3 intersect with the rotation axis of the stirring shaft 21 at the first point. The wet metallurgical reaction device 100 of the present application can be used in the working condition with large air flow.

[0044] By arranging the plurality of air inlet nozzles 3, the oxygen-containing gas can be divided into multiple paths to enter the reaction liquid in the normal pressure reaction chamber 11, so as to greatly increase the total flow of the oxygen-containing gas, so as to further increase the dissolved oxygen content of the reaction liquid after the oxygen-containing gas is sheared into micro-nano bubbles, effectively increase the turbulence degree of the reaction liquid in the normal pressure reaction chamber 11, further reduce the size of the oxygen-containing gas bubbles in the reaction liquid, further increase the dissolved oxygen content of the reaction liquid, and make the oxygen-containing gas bubbles more uniformly and dispersedly distributed in the reaction liquid, so as to improve the oxygen utilization rate and make the chemical reaction better.

[0045] Furthermore, by making the center lines of the air injection ports 31 of the plurality of air inlet nozzles 3 intersect with the rotation axis of the stirring shaft 21 at the first point, the turbulence degree of the reaction liquid in the normal pressure reaction chamber 11 can be further increased, so as to further reduce the size of the oxygen-containing gas bubbles in the reaction liquid, further increase the dissolved oxygen content of the reaction liquid, and make the oxygen-containing gas bubbles more uniformly and dispersedly distributed in the reaction liquid, so as to improve the oxygen utilization rate and make the chemical reaction better.

[0046] As shown in Figs. Figure 1 As shown in Figs. The air injection ports 31 of the air inlet nozzles 3 are located outside the inner edge 41 of the baffle 4. That is, the inner edge 41 of the baffle 4 is adjacent to the center line of the normal pressure reaction chamber 11 in the inner-outer direction relative to the air injection ports 31 of the air inlet nozzles 3, i.e. the inner edge 41 of the baffle 4 is adjacent to the stirring paddle 22 in the inner-outer direction relative to the air injection ports 31 of the air inlet nozzles 3.

[0047] By arranging the baffle 4 on the wall surface of the normal pressure reaction chamber 11 and making the inner edge 41 of the baffle 4 located inside the air injection ports 31, the turbulence degree of the reaction liquid in the normal pressure reaction chamber 11 can be further increased, so as to further reduce the size of the oxygen-containing gas bubbles in the reaction liquid, further increase the dissolved oxygen content of the reaction liquid, and make the oxygen-containing gas bubbles more uniformly and dispersedly distributed in the reaction liquid, so as to improve the oxygen utilization rate and make the chemical reaction better.

[0048] Optionally, the first portion 331 of the converging section 33 is located within the normal-pressure reaction cavity 11. The ratio of the size of the first portion 331 of the converging section 33 in the radial direction of the normal-pressure reaction cavity 11 to the radius of the normal-pressure reaction cavity 11 is (0.06-0.09):1. In other words, the ratio of the size of the first portion 331 of the converging section 33 in the inner-outer direction to the radius of the normal-pressure reaction cavity 11 is (0.06-0.09):1.

[0049] Thus, while ensuring that the oxygen-containing gas is conveniently and effectively injected into the normal-pressure reaction cavity 11, the flow path of the oxygen-containing gas in the reaction liquid is extended, so that the reaction liquid can more fully shear the oxygen-containing gas and more micro-nano bubbles can be obtained, thereby further increasing the dissolved oxygen content of the reaction liquid and further improving the oxygen utilization rate.

[0050] Further optionally, the ratio of the size of the first portion 331 of the converging section 33 in the radial direction of the normal-pressure reaction cavity 11 to the radius of the normal-pressure reaction cavity 11 is (0.08-0.09):1. Thus, the reaction liquid can more fully shear the oxygen-containing gas and more micro-nano bubbles can be obtained, thereby further increasing the dissolved oxygen content of the reaction liquid and further improving the oxygen utilization rate.

[0051] Further optionally, the ratio of the size of the first portion 331 of the converging section 33 in the radial direction of the normal-pressure reaction cavity 11 to the radius of the normal-pressure reaction cavity 11 is (0.086-0.088):1. Thus, the reaction liquid can more fully shear the oxygen-containing gas and more micro-nano bubbles can be obtained, thereby further increasing the dissolved oxygen content of the reaction liquid and further improving the oxygen utilization rate.

[0052] Optionally, the ratio of the size of the first portion 331 of the converging section 33 in the radial direction of the normal-pressure reaction cavity 11 to the size of the flow baffle 4 in the radial direction of the normal-pressure reaction cavity 11 is (0.26-0.39):1. That is, the ratio of the size of the first portion 331 of the converging section 33 in the inner-outer direction to the size of the flow baffle 4 in the inner-outer direction is (0.26-0.39):1. Thus, the degree of turbulence of the reaction liquid in the normal-pressure reaction cavity 11 can be further increased, thereby further reducing the size of the oxygen-containing gas bubbles in the reaction liquid, further increasing the dissolved oxygen content of the reaction liquid, and more uniformly dispersing the oxygen-containing gas bubbles in the reaction liquid, so as to improve the oxygen utilization rate and better perform the chemical reaction.

[0053] Optionally, the ratio of the radial dimension of the first portion 331 of the contraction section 33 in the atmospheric pressure reaction chamber 11 to the radial dimension of the baffle 4 in the atmospheric pressure reaction chamber 11 is (0.29-0.34):1. This can further increase the turbulence of the reaction liquid in the atmospheric pressure reaction chamber 11, thereby further reducing the size of the oxygen-containing gas bubbles in the reaction liquid, further increasing the dissolved oxygen content of the reaction liquid, and making the oxygen-containing gas bubbles more uniformly and diffusely distributed in the reaction liquid, so as to improve oxygen utilization and enable the chemical reaction to proceed better.

[0054] Optionally, the ratio of the radial dimension of the first portion 331 of the contraction section 33 in the atmospheric pressure reaction chamber 11 to the radial dimension of the baffle 4 in the atmospheric pressure reaction chamber 11 is (0.31-0.33):1. This can further increase the turbulence of the reaction liquid in the atmospheric pressure reaction chamber 11, thereby further reducing the size of the oxygen-containing gas bubbles in the reaction liquid, further increasing the dissolved oxygen content of the reaction liquid, and making the oxygen-containing gas bubbles more uniformly and diffusely distributed in the reaction liquid, so as to improve oxygen utilization and allow the chemical reaction to proceed better.

[0055] like Figure 1 and Figure 3 As shown, there are multiple baffles 4 and multiple air intake nozzles 3. The multiple air intake nozzles 3 and multiple baffles 4 are alternately arranged circumferentially in the atmospheric pressure reaction chamber 11 (atmospheric pressure reaction tank 1). Each air intake nozzle 3 is paired with one of the multiple baffles 4, and the converging section 33 of the air intake nozzle 3 is adjacent to the paired baffle 4 circumferentially in the atmospheric pressure reaction chamber 11. The converging section 33 of the paired air intake nozzle 3 and the baffle 4 are spaced 11-17 degrees apart circumferentially in the atmospheric pressure reaction chamber 11.

[0056] This allows the baffle 4 to better match the constriction section 33 of the air intake nozzle 3, thereby further increasing the turbulence of the reaction liquid in the atmospheric pressure reaction chamber 11, which in turn further reduces the size of the oxygen-containing gas bubbles in the reaction liquid, further increases the dissolved oxygen content of the reaction liquid, and makes the oxygen-containing gas bubbles more evenly and diffusely distributed in the reaction liquid, so as to improve oxygen utilization and make the chemical reaction proceed better.

[0057] Optionally, the constriction section 33 of the cooperating air intake nozzle 3 and the baffle 4 are spaced 14-15 degrees apart in the circumferential direction of the atmospheric pressure reaction chamber 11. This allows the baffle 4 to better cooperate with the constriction section 33 of the air intake nozzle 3, thereby further increasing the turbulence of the reaction liquid in the atmospheric pressure reaction chamber 11, further reducing the size of the oxygen-containing gas bubbles in the reaction liquid, further increasing the dissolved oxygen content of the reaction liquid, and making the oxygen-containing gas bubbles more uniformly and diffusely distributed in the reaction liquid, so as to improve oxygen utilization and enable the chemical reaction to proceed better.

[0058] In one example of the present application, the hydrometallurgical reaction device 100 is a hydrometallurgical leaching device, and the atmospheric pressure reaction tank body 1 further has a hydrogen outlet which is in communication with the atmospheric pressure reaction cavity 11. Thus, the hydrometallurgical reaction device 100 can perform hydrometallurgical leaching on the raw material containing metal phase. The hydrogen generated by the reaction of the metal and the acid can be discharged through the hydrogen outlet, so as to improve the safety of the hydrometallurgical reaction device 100.

[0059] Since the hydrometallurgical leaching on the raw material containing metal phase will generate hydrogen, the raw material containing metal phase cannot be subjected to hydrometallurgical leaching by using a high-pressure reaction device (high pressure leads to the inability of hydrogen to be discharged, and is prone to explosion). The solubility of oxygen under atmospheric pressure is low, and by using the hydrometallurgical reaction device 100 of the present application, the solubility of oxygen under atmospheric pressure can be greatly improved, so as to greatly improve the dissolved oxygen content of the reaction liquid in the atmospheric pressure reaction cavity 11 of the hydrometallurgical reaction device 100.

[0060] Optionally, the raw material containing metal phase can be nickel alloy, cobalt alloy, copper alloy, ice nickel, ice copper, nickel-iron, etc.

[0061] For example, the hydrometallurgical reaction device 100 is used for oxidative leaching of copper-nickel sulfide material. The reaction temperature of the oxidative leaching is 85-90 degrees Celsius, and the pH of the oxidative leaching reaction is 1.5. After 4 hours of oxidative leaching reaction, the nickel-cobalt leaching rate is greater than or equal to 55%, and the oxygen utilization rate is greater than or equal to 30%. If the existing technology of the stirring shaft air inlet mode is used, after 8 hours of oxidative leaching reaction, the nickel-cobalt leaching rate is about 40%, and the oxygen utilization rate is about 15%.

[0062] In another example of the present application, the hydrometallurgical reaction device 100 is a hydrometallurgical impurity removal device.

[0063] For example, the hydrometallurgical reaction device 100 is used for impurity removal of cobalt sulfate pre-iron removal liquid. The concentration of divalent iron in the cobalt sulfate pre-iron removal liquid is about 3g / L. The reaction temperature of the impurity removal reaction is 70-75 degrees Celsius, and the pH of the impurity removal reaction is 3.5-4.0. After about 3 hours of impurity removal reaction, the concentration of divalent iron in the cobalt sulfate solution is reduced to 0.05g / L, and the oxygen utilization rate is greater than or equal to 40%. If the existing technology of the stirring shaft air inlet mode is used, it takes more than 4 hours to reduce the concentration of divalent iron in the cobalt sulfate solution to 0.05g / L, and the oxygen utilization rate is about 20%.

[0064] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0065] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0066] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0067] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0068] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the features of different embodiments or examples described in the present application and the features of different embodiments or examples within the scope of the present application without contradiction.

[0069] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A hydrometallurgical reaction apparatus characterized by, The wet metallurgical reaction device comprises: a normal-pressure reaction tank body having a normal-pressure reaction cavity, a wall surface of the normal-pressure reaction cavity being provided with a mounting hole; a stirrer arranged in the normal-pressure reaction cavity; and an air inlet nozzle arranged at the mounting hole, the air inlet nozzle comprising a body section and a converging section, one end of the converging section being connected to the body section, the other end of the converging section being provided with an air outlet, wherein at least a part of the converging section is located in the normal-pressure reaction cavity, the converging section extends obliquely downward from the body section so that the air outlet is open in the obliquely downward direction. The stirrer comprises a stirring shaft and a stirring paddle arranged on the stirring shaft, wherein a center line of the air outlet intersects with a rotation axis of the stirring shaft at a first point, the first point being located below the stirring paddle.

2. The hydrometallurgical reaction apparatus of claim 1, wherein 3. The wet metallurgical reaction device according to claim 2, wherein the air outlet is located below the stirring paddle; and / or a plurality of air inlet nozzles are arranged at intervals in the circumferential direction of the normal-pressure reaction cavity, wherein the center lines of the air outlets of the plurality of air inlet nozzles intersect with the rotation axis of the stirring shaft at the first point. Further comprising a baffle plate arranged on the wall surface of the normal-pressure reaction cavity, a length direction of the baffle plate being consistent with the axial direction of the stirring shaft, wherein the air outlet of the air inlet nozzle is located outside an inner edge of the baffle plate.

4. The hydrometallurgical reaction apparatus of claim 2, wherein A first part of the converging section is located in the normal-pressure reaction cavity, a ratio of a size of the first part in the radial direction of the normal-pressure reaction cavity to a size of the baffle plate in the radial direction of the normal-pressure reaction cavity is (0.26-0.39):

1.

5. The hydrometallurgical reaction apparatus of claim 4, wherein, A plurality of baffle plates are arranged, a plurality of air inlet nozzles are arranged, wherein the plurality of air inlet nozzles and the plurality of baffle plates are arranged alternately in the circumferential direction of the normal-pressure reaction cavity, the plurality of air inlet nozzles and the plurality of baffle plates are matched one by one, wherein the converging section of the air inlet nozzle is adjacent to the matched baffle plate in the circumferential direction of the normal-pressure reaction cavity, the converging section of the matched air inlet nozzle and the baffle plate are spaced apart by 11-17 degrees in the circumferential direction of the normal-pressure reaction cavity.

6. The hydrometallurgical reaction apparatus of claim 4, wherein, An angle between an extension direction of the converging section and a vertically downward direction is 40-70 degrees.

7. The hydrometallurgical reaction apparatus of claim 1, wherein The converging section is frustoconical, an angle between a generatrix of the converging section and a center line of the converging section is 5-8 degrees.

8. The hydrometallurgical reaction apparatus of claim 1, wherein, A ratio of a size of the first part in the radial direction of the normal-pressure reaction cavity to a radius of the normal-pressure reaction cavity is (0.06-0.09):

1.

9. The hydrometallurgical reaction apparatus of claim 1, wherein, 10. The wet metallurgical reaction device according to any one of claims 1-9, wherein the wet metallurgical reaction device is a wet metallurgical leaching device, the normal-pressure reaction tank body is further provided with a hydrogen outlet, the hydrogen outlet being in communication with the normal-pressure reaction cavity; or the wet metallurgical reaction device is a wet metallurgical impurity removal device. ​

Images