A high-pressure leaching reactor with double-power stirring

Abstract

This application relates to a high-pressure leaching reactor with dual-power stirring, comprising a reactor body, a stirring assembly, a liquid supply assembly, and a drive assembly. The stirring assembly includes a hollow shaft, a jet nozzle, and a stirring element. The hollow shaft is rotatably connected to the reactor body, with the top end of the hollow shaft connected to the external solution and the bottom end connected to the jet nozzle. The jet nozzle is positioned pointing towards the inner bottom wall of the reactor body. The stirring element is mounted on the hollow shaft. The liquid supply assembly is mounted on the reactor body and connected to the hollow shaft. The drive assembly is mounted on the reactor body and connected to the hollow shaft. The liquid supply assembly delivers the solution into the hollow shaft and out through the jet nozzle, impacting the bottom of the reactor body and blowing up the deposited slurry. The stirring element stirs the solution, thereby forming a hydraulic-mechanical dual-power stirring structure, preventing slurry deposition and increasing the reaction rate.

Description

Technical Field

[0001] This application relates to the field of reaction vessel technology, and in particular to a high-pressure leaching reaction vessel equipped with dual-power stirring. Background Technology

[0002] Currently, in the hydrometallurgical process for laterite nickel ore, the ore slurry, sulfuric acid, and steam are typically injected into a high-pressure reactor for smelting to extract nickel and cobalt from the ore. Specifically, the slurry and strong acid are injected from the top of the reactor, along with high-temperature steam, creating a high-temperature, high-pressure, and strong acid environment inside the reactor.

[0003] To improve reaction efficiency, a stirring device is usually installed inside the reactor. For example, the stirring device for a polyester reactor proposed in patent application number CN202122267204.X specifically includes a shaft, stirring blades, a flange, a motor, a mounting plate, a cylinder, a first sealing ring, and a second sealing ring. The motor controls the shaft to drive the stirring blades to rotate and stir, while the cylinder controls the stirring blades to move up and down.

[0004] However, some of the slurry will deposit at the bottom of the reactor under gravity, resulting in insufficient contact with the acid solution and affecting the reaction rate.

[0005] Application content

[0006] In view of this, it is necessary to provide a high-pressure leaching reactor with dual-power stirring to solve the problem that some slurry will settle at the bottom of the reactor under gravity, resulting in insufficient contact with the acid and affecting the reaction rate.

[0007] This application provides a high-pressure leaching reactor with dual-power stirring, including a reactor body, a stirring assembly, a liquid supply assembly, and a drive assembly. The stirring assembly includes a hollow shaft, a jet nozzle, and a stirring element. The hollow shaft is rotatably connected to the reactor body. The top end of the hollow shaft is connected to a solution, and the bottom end of the hollow shaft is connected to the jet nozzle. The jet nozzle is positioned pointing towards the inner bottom wall of the reactor body. The solution discharged by the jet nozzle blows up the slurry deposited at the bottom of the reactor body. The stirring element is mounted on the hollow shaft. The liquid supply assembly is mounted on the reactor body and is connected to the hollow shaft to deliver solution into the hollow shaft. The drive assembly is mounted on the reactor body, and its output end is connected to the hollow shaft to drive the hollow shaft to rotate.

[0008] Furthermore, the jet nozzle includes a plurality of first nozzles evenly arranged circumferentially along the hollow axis, the first nozzles being inclined away from the hollow axis in a vertically downward direction.

[0009] Furthermore, the jet nozzle includes a second nozzle connected to the bottom end of the hollow shaft, the second nozzle being arranged vertically downwards.

[0010] Furthermore, the stirring assembly also includes an annular guide plate, which is a tapered structure that gradually expands in a vertically downward direction. The annular guide plate is fixedly connected to the tapered inner bottom wall of the reactor body. The annular guide plate has a tapered guiding surface, and a plurality of first nozzles are arranged parallel to the tapered guiding surface. The second nozzles extend into the annular guide plate.

[0011] Furthermore, the bottom edge of the annular guide plate is provided with a plurality of water passage holes evenly arranged along its circumference;

[0012] The stirring assembly also includes a plurality of support rods evenly arranged around the annular guide plate. The bottom ends of the plurality of support rods are fixedly connected to the inner bottom wall of the reactor body, and the top ends of the plurality of support rods are all connected to the annular guide plate.

[0013] Furthermore, the stirring element includes a rising impeller and a stirring impeller arranged sequentially on the hollow shaft in a vertically upward direction. The rising impeller drives the solution to flow in a vertically upward direction by rotating thereon, and the stirring impeller drives the solution to diffuse in all directions by rotating thereon.

[0014] Furthermore, the rising impeller includes an inner ring, an outer ring, and multiple rising blades. The inner ring is coaxially sleeved on the hollow shaft. The inner ring and the outer ring are connected by multiple rising blades. The multiple rising blades are evenly arranged around the inner ring. The top of each rising blade has an inclined surface, which is inclined downward along the rotation direction of the hollow shaft.

[0015] Furthermore, the stirring impeller includes a stirring ring and multiple stirring blades. The stirring ring is coaxially sleeved on the hollow shaft, and the multiple stirring blades are evenly arranged along the circumference of the stirring ring. The stirring blades are vertical flat plates, and the extension direction of the stirring blades is perpendicular to the stirring ring.

[0016] Furthermore, the drive assembly includes a motor, a coupling, and a rotary joint. The motor is mounted on the top of the reactor body, and the output end of the motor is connected to the hollow shaft in sequence via the coupling and the rotary joint. The liquid supply assembly is connected to the hollow shaft via the rotary joint.

[0017] Furthermore, the rotary joint has a cavity, and the opposite sides of the coupling and the hollow shaft are rotatably and sealingly connected to the rotary joint and extend into and connected to the cavity of the rotary joint. A water inlet hole is provided on the side wall of the portion of the hollow shaft located in the cavity, and the liquid supply assembly communicates with the cavity.

[0018] Compared with existing technologies, the liquid supply component delivers the solution into the hollow shaft and out through the jet nozzle, impacting the bottom of the reactor body to blow up the deposited slurry. The drive component drives the agitator connected to the hollow shaft to rotate, thereby stirring the solution, thus forming a hydraulic-mechanical dual-power stirring structure, avoiding slurry deposition and improving the reaction rate. Attached Figure Description

[0019] Figure 1 A schematic diagram of the internal structure of the horizontal reactor body in a high-pressure leaching reactor equipped with dual-power stirring, provided for an embodiment of this application;

[0020] Figure 2 A schematic diagram of the internal structure of a vertical reactor body in a high-pressure leaching reactor equipped with dual-power stirring, provided in an embodiment of this application.

[0021] Figure 3 The high-pressure leaching reactor with dual-power stirring provided in the embodiments of this application Figure 2 Enlarged diagram of section A in the middle;

[0022] Figure 4 A top view of the annular guide plate in a high-pressure leaching reactor with dual-power stirring, provided in an embodiment of this application;

[0023] Figure 5 A top view of the rising impeller in a high-pressure leaching reactor with dual-power stirring, provided in an embodiment of this application;

[0024] Figure 6 A top view of the stirring impeller in a high-pressure leaching reactor with dual-power stirring, provided in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the rotary joint in a high-pressure leaching reactor with dual-power stirring, provided in an embodiment of this application. Detailed Implementation

[0026] The preferred embodiments of this application are described in detail below with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of this application to illustrate the principles of this application, but are not intended to limit the scope of this application.

[0027] like Figure 1-2As shown, this application provides a high-pressure leaching reactor with dual-power stirring, including a reactor body 100, a stirring assembly 200, a liquid supply assembly 300, and a drive assembly 400. The stirring assembly 200 includes a hollow shaft 210, a jet nozzle 220, and a stirring element. The hollow shaft 210 is rotatably connected to the reactor body 100. The top end of the hollow shaft 210 is connected to the external solution, and the bottom end of the hollow shaft 210 is connected to the jet nozzle 220, which points towards the reactor body 100. The inner bottom wall is designed so that the solution discharged by the jet nozzle 220 blows up the slurry deposited at the bottom of the reactor body 100. The stirring component is installed on the hollow shaft 210. The liquid supply component 300 is installed on the reactor body 100 and is connected to the hollow shaft 210 to transport the solution into the hollow shaft 210. The drive component 400 is installed on the reactor body 100 and the output end of the drive component 400 is connected to the hollow shaft 210 to drive the hollow shaft 210 to rotate.

[0028] During implementation, the liquid supply component 300 delivers the solution into the hollow shaft 210 and out through the jet nozzle 220, impacting the bottom of the reactor body 100 to blow up the deposited slurry. The drive component 400 drives the stirring element connected to the hollow shaft 210 to rotate, thereby stirring the solution, thus forming a hydraulic-mechanical dual-power stirring structure, avoiding slurry deposition and improving the reaction rate.

[0029] The reactor body 100 in this embodiment is a tank structure that is conceived by those skilled in the art, and will not be elaborated upon further here. It is understood that the reactor body 100 can be adopted as follows: Figure 1 The horizontal structure shown can also be adopted as follows: Figure 2 The vertical structures shown all achieve the intent of this application.

[0030] In this embodiment, the stirring assembly 200 is a hydraulic-mechanical dual-power stirring structure, which includes a hollow shaft 210, a jet nozzle 220, and a stirring element. The hollow shaft 210 is rotatably connected to the reactor body 100. The top of the hollow shaft 210 is connected to the external solution, and the bottom of the hollow shaft 210 is connected to the jet nozzle 220. The jet nozzle 220 is positioned pointing towards the inner bottom wall of the reactor body 100. The solution discharged by the jet nozzle 220 blows up the slurry deposited at the bottom of the reactor body 100. The stirring element is installed on the hollow shaft 210.

[0031] In this process, the slurry deposited at the bottom of the reactor body 100 can be blown up by hydraulic drive, and the agitator can stir the solution by mechanical drive.

[0032] like Figure 3As shown, in one embodiment, the jet nozzle 220 includes a plurality of first nozzles 221 evenly arranged circumferentially along the hollow shaft 210, and the first nozzles 221 are inclined away from the hollow shaft 210 in a vertically downward direction.

[0033] To increase the coverage area of ​​the jet nozzle 220, in one embodiment, the jet nozzle 220 includes a second nozzle 222 connected to the bottom end of the hollow shaft 210, and the second nozzle 222 is arranged vertically downward.

[0034] To facilitate the diffusion and upward flow of the water stream from the jet nozzle 220, in one embodiment, the stirring assembly 200 further includes an annular guide plate 223. The annular guide plate 223 is a tapered structure that gradually expands in the vertical downward direction. The annular guide plate 223 is fixedly connected to the tapered inner bottom wall of the reactor body 100. The annular guide plate 223 has a tapered guiding surface. A plurality of first nozzles 221 are arranged parallel to the tapered guiding surface, and second nozzles 222 extend into the annular guide plate 223.

[0035] Under the influence of gravity, the solution located above the annular guide plate 223 tends to flow downwards into the annular guide plate 223. To facilitate the removal of the slurry deposited inside the annular guide plate 223, such as... Figure 3-4 As shown, in one embodiment, a plurality of water passage holes 223a are uniformly arranged along its circumference at the bottom edge of the annular guide plate 223. The slurry deposited inside the annular guide plate 223 flows out through the water passage holes 223a to the outside of the annular guide plate 223 under the action of the second nozzle 222, and flows along with it under the action of the first nozzle 221.

[0036] It is understood that in this embodiment, the second nozzle 222 is positioned directly opposite the center of the bottom of the reactor body 100. Simultaneously, during the liquid discharge process, the reactor body 100 facilitates the removal of the solution accumulated on the annular guide plate 223 through the provided water passage 223a.

[0037] To improve the stability of the annular guide plate 223, in one embodiment, the stirring assembly 200 further includes a plurality of support rods 223b evenly arranged around the annular guide plate 223. The bottom ends of the plurality of support rods 223b are fixedly connected to the inner bottom wall of the reactor body 100, and the top ends of the plurality of support rods 223b are all connected to the annular guide plate 223.

[0038] The stirring component in this embodiment includes a rising impeller 230 and a stirring impeller 240 arranged sequentially on a hollow shaft 210 in a vertically upward direction. The rising impeller 230 drives the solution to flow in a vertically upward direction by rotating, and the stirring impeller 240 drives the solution to diffuse in all directions by rotating.

[0039] like Figure 5As shown, in one embodiment, the rising impeller 230 includes an inner ring 231, an outer ring 232, and a plurality of rising blades 233. The inner ring 231 is coaxially sleeved on the hollow shaft 210. The inner ring 231 and the outer ring 232 are connected by a plurality of rising blades 233. The plurality of rising blades 233 are evenly arranged around the inner ring 231. The top of the rising blades 233 has an inclined surface 234, which is inclined downward along the rotation direction of the hollow shaft 210.

[0040] like Figure 6 As shown, in one embodiment, the stirring impeller 240 includes a stirring ring 241 and a plurality of stirring blades 242. The stirring ring 241 is coaxially sleeved on the hollow shaft 210. The plurality of stirring blades 242 are evenly arranged around the stirring ring 241. The stirring blades 242 are vertical flat plates, and the extending direction of the stirring blades 242 is perpendicular to the stirring ring 241.

[0041] The liquid supply assembly 300 in this embodiment includes a water pump, an inlet pipe, and a return pipe. The inlet end of the water pump is connected to the interior of the reactor body 100 via the return pipe, and the inlet end of the water pump is connected to the rotary joint 430 via the inlet pipe.

[0042] The drive assembly 400 in this embodiment includes a motor 410, a coupling 420, and a rotary joint 430. The motor 410 is mounted on the top of the reactor body 100. The output end of the motor 410 is connected to the hollow shaft 210 in sequence via the coupling 420 and the rotary joint 430. The liquid supply assembly 300 is connected to the hollow shaft 210 via the rotary joint 430.

[0043] like Figure 7 As shown, in one embodiment, the rotary joint 430 has a cavity, and the opposite sides of the coupling 420 and the hollow shaft 210 are rotatably and sealingly connected to the rotary joint 430 and extend into and connected to the cavity of the rotary joint 430. A water inlet hole 211 is provided on the side wall of the portion of the hollow shaft 210 located in the cavity, and the liquid supply assembly 300 communicates with the cavity.

[0044] Compared with the prior art: the liquid supply component 300 delivers the solution into the hollow shaft 210 and out through the jet nozzle 220, which impacts the bottom of the reactor body 100 and blows up the deposited slurry. The drive component 400 drives the agitator connected to the hollow shaft 210 to rotate, thereby stirring the solution, thus forming a hydraulic and mechanical dual-power stirring structure, avoiding slurry deposition and improving the reaction rate.

[0045] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A high-pressure leaching reactor equipped with dual-power stirring, characterized in that, include: Reactor body; The stirring assembly includes a hollow shaft, a jet nozzle, and a stirring element. The hollow shaft is rotatably connected to the reactor body. The top end of the hollow shaft is connected to a solution, and the bottom end of the hollow shaft is connected to the jet nozzle. The jet nozzle is positioned pointing towards the inner bottom wall of the reactor body. The solution discharged by the jet nozzle blows up the slurry deposited at the bottom of the reactor body. The stirring element is mounted on the hollow shaft. A liquid supply assembly is installed on the reactor body and is connected to the hollow shaft to deliver solution into the hollow shaft. A drive assembly is mounted on the reactor body, and the output end of the drive assembly is connected to the hollow shaft to drive the hollow shaft to rotate.

2. The high-pressure leaching reactor with dual-power stirring according to claim 1, characterized in that, The jet nozzle includes a plurality of first nozzles evenly arranged circumferentially along the hollow axis, and the first nozzles are inclined away from the hollow axis in a vertically downward direction.

3. The high-pressure leaching reactor with dual-power stirring according to claim 2, characterized in that, The jet nozzle includes a second nozzle connected to the bottom end of the hollow shaft, and the second nozzle is arranged vertically downward.

4. The high-pressure leaching reactor with dual-power stirring according to claim 3, characterized in that, The stirring assembly also includes an annular guide plate, which is a tapered structure that gradually expands in a vertically downward direction. The annular guide plate is fixedly connected to the tapered inner bottom wall of the reactor body. The annular guide plate has a tapered guiding surface. A plurality of first nozzles are arranged parallel to the tapered guiding surface, and the second nozzles extend into the annular guide plate.

5. The high-pressure leaching reactor with dual-power stirring according to claim 4, characterized in that, The bottom edge of the annular guide plate is provided with multiple water passage holes evenly arranged along its circumference. The stirring assembly also includes a plurality of support rods evenly arranged around the annular guide plate. The bottom ends of the plurality of support rods are fixedly connected to the inner bottom wall of the reactor body, and the top ends of the plurality of support rods are all connected to the annular guide plate.

6. The high-pressure leaching reactor with dual-power stirring according to claim 1, characterized in that, The stirring component includes a rising impeller and a stirring impeller arranged sequentially on the hollow shaft in a vertically upward direction. The rising impeller drives the solution to flow in a vertically upward direction by rotating, and the stirring impeller drives the solution to diffuse in all directions by rotating.

7. The high-pressure leaching reactor with dual-power stirring according to claim 6, characterized in that, The rising impeller includes an inner ring, an outer ring, and multiple rising blades. The inner ring is coaxially sleeved on the hollow shaft. The inner ring and the outer ring are connected by multiple rising blades. The multiple rising blades are evenly arranged around the inner ring. The top of each rising blade has an inclined surface, which is inclined downwards along the rotation direction of the hollow shaft.

8. The high-pressure leaching reactor with dual-power stirring according to claim 6, characterized in that, The impeller includes an agitator ring and multiple agitator blades. The agitator ring is coaxially sleeved on the hollow shaft. The multiple agitator blades are evenly arranged along the circumference of the agitator ring. The agitator blades are vertical flat plates, and the extension direction of the agitator blades is perpendicular to the agitator ring.

9. The high-pressure leaching reactor with dual-power stirring according to claim 1, characterized in that, The drive assembly includes a motor, a coupling, and a rotary joint. The motor is mounted on the top of the reactor body. The output end of the motor is connected to the hollow shaft in sequence via the coupling and the rotary joint. The liquid supply assembly is connected to the hollow shaft via the rotary joint.

10. The high-pressure leaching reactor with dual-power stirring according to claim 9, characterized in that, The rotary joint has a cavity. The coupling and the opposite side of the hollow shaft are rotatably and sealed to the rotary joint and extend into and are connected to the cavity of the rotary joint. A water inlet hole is provided on the side wall of the portion of the hollow shaft located in the cavity. The liquid supply assembly communicates with the cavity.

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