A high-efficiency energy-saving type nickel-cobalt combined leaching reaction equipment

Abstract

The utility model relates to a high -efficient energy -conserving type nickel cobalt combined leaching reaction equipment, the utility model relates to metallurgical equipment technical field, heating coil fixed setting is constituted in the cavity between shell and inner shell, the upper portion of reaction tank body is fixedly arranged with motor, the inside of reaction tank body is rotationally arranged with stirring shaft through bearing, the output shaft of motor is connected with stirring shaft, axial flow impeller is fixedly arranged in the lower end of stirring shaft, and stirring sleeve is rotationally set up on stirring shaft through sealing bearing, radial flow impeller is fixedly set up on stirring sleeve, exhaust pipe is located at the rear side position of feed pipe line at the upper portion of reaction tank body, one end of exhaust pipe is equipped with spiral heat pipe, and spiral heat pipe is fixedly set up on feed pipe line, one end of spiral heat pipe is connected with external tail gas treatment equipment, not only can through multistage combination stirring of material, to ensure the uniform mixing of material, but also can realize the recycling of heat energy, reduce energy consumption and improve efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a high-efficiency and energy-saving nickel-cobalt combined leaching reaction equipment. Background Technology

[0002] Nickel and cobalt, as important strategic metals, are widely used in new energy batteries, high-temperature alloys, catalysts, and other fields. Hydrometallurgy is the mainstream process for extracting nickel and cobalt, and the leaching reaction is the key link that determines the metal recovery rate and energy consumption. At present, mechanically stirred leaching tanks or reactors are commonly used in industry for nickel and cobalt co-leaching. However, traditional stirred tanks usually adopt a single stirring mode (such as paddle or turbine), which is difficult to meet the requirements of solid suspension and enhanced mass transfer at the same time. This results in insufficient mixing of the slurry, leading to uneven local acid concentration or oxidant distribution, which reduces the nickel and cobalt leaching rate. At the same time, the leaching reaction needs to maintain a high temperature. The high-temperature gas generated during the leaching reaction usually enters the tail gas treatment system and cannot be used for the leaching reaction equipment, thus causing energy waste. Therefore, there is an urgent need for a high-efficiency and energy-saving nickel-cobalt co-leaching reaction equipment. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a rationally designed, highly efficient, and energy-saving nickel-cobalt combined leaching reaction device to solve the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a support frame and a reaction tank, the reaction tank is fixedly installed on the upper part of the support frame, the reaction tank is composed of an outer shell and an inner shell, the inner shell is fixedly installed inside the outer shell, and the upper and lower sides of the reaction tank are respectively provided with a feed pipe and a discharge pipe. It also includes: A heating coil is fixedly installed in the cavity formed between the outer shell and the inner shell. A motor is fixedly installed on the upper part of the reaction vessel. A stirring shaft is rotatably installed inside the reaction vessel through a bearing. The output shaft of the motor is connected to the stirring shaft. An axial flow impeller is fixedly installed at the lower end of a stirring shaft. A stirring sleeve is rotatably mounted on the stirring shaft via a sealed bearing. A radial flow impeller is fixedly mounted on the stirring sleeve. A synchronous differential mechanism connected to the stirring sleeve and the stirring shaft is provided inside the inner shell. The exhaust pipe is located on the upper part of the reaction tank, behind the feed pipe. One end of the exhaust pipe is equipped with a spiral heat-conducting pipe, which is fixedly sleeved on the feed pipe. One end of the spiral heat-conducting pipe is connected to an external exhaust gas treatment device.

[0005] Furthermore, the synchronous differential mechanism includes: A fixed shell is fixedly installed on the inner top wall of the inner shell. The upper end of the stirring sleeve is rotatably inserted into the fixed shell through a bearing. A rotating rod is rotatably installed in the fixed shell at the right side position of the stirring sleeve through a bearing. There are two gears, one fixedly mounted on the stirring shaft and the other on the rotating rod. Gears 2 are fixedly mounted on the upper end of the stirring sleeve and the other on the rotating rod. Gears 1 and 2 are meshed together. The diameter of gear 1 is larger than that of gear 2.

[0006] Furthermore, a protective insulation cylinder is fixedly sleeved on the feed pipe, and a spiral heat-conducting pipe is fixedly installed inside the protective insulation cylinder.

[0007] Furthermore, the outer side of the reaction vessel has several opposing insulation plates with rounded corners, and adjacent insulation plates are connected by snap fasteners.

[0008] Furthermore, the heating coil is configured in two sections, with the spacing between the lower sections being smaller than that between the upper sections.

[0009] Furthermore, the bottom of the support frame is provided with several vibration damping seats, and the support frame is provided with several reinforcing ribs.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the high-efficiency and energy-saving nickel-cobalt combined leaching reaction equipment described in this utility model can not only ensure the uniform mixing of materials through multi-stage combined stirring, but also realize the recovery and utilization of heat energy, reduce energy consumption and improve efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a cross-sectional view of the reaction vessel and the protective insulation cylinder in this utility model.

[0013] Figure 3 yes Figure 2 Enlarged view of part A in the image.

[0014] Figure 4 This is an exploded view of the stirring shaft, axial flow impeller, stirring sleeve, radial flow impeller, and synchronous differential mechanism in this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Support frame; 2. Reaction tank body; 2-1. Outer shell; 2-2. Inner shell; 3. Heating coil; 4. Motor; 5. Stirring shaft; 6. Axial flow impeller; 7. Stirring sleeve; 8. Radial flow impeller; 9. Synchronous differential mechanism; 9. Fixed shell; 9-1. Rotating rod; 9-2. Gear No. 1; 9-3. Gear No. 2; 9-4. Exhaust pipe; 10. Spiral heat conduction pipe; 11. Protective insulation cylinder; 12. Insulation board; 13. Vibration damping seat; 14. Reinforcing rib plate; 15. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figures 1-4 As shown, this specific embodiment adopts the following technical solution: It includes a support frame 1 and a reaction tank 2. The reaction tank 2 is fixedly installed on the upper part of the support frame 1. The reaction tank 2 is composed of an outer shell 2-1 and an inner shell 2-2. The inner shell 2-2 is fixedly installed inside the outer shell 2-1. The upper and lower sides of the reaction tank 2 are respectively provided with inlet pipes and outlet pipes. Several abutting insulation plates 13 are distributed on the outer side of the reaction tank 2 with equal rounded corners. Adjacent insulation plates 13 are connected by snap-fit. The insulation plates 13 can reduce the... The heat loss during the reaction in the reaction tank 2 is also convenient. The disassembly and assembly of a single insulation board 13 is also relatively convenient. When a certain insulation board 13 is damaged, it is not necessary to remove the entire insulation layer composed of several insulation boards 13. The bottom of the support frame 1 is provided with several vibration damping seats 14, and the support frame 1 is provided with several reinforcing ribs 15. The reinforcing ribs 15 can improve the structural strength of the support frame 1, and the vibration damping seats 14 can provide vibration damping and buffering for the equipment, reducing the adverse effects of vibration on the equipment during the reaction process. It also includes: Heating coil 3 is fixedly installed in the cavity formed between the outer shell 2-1 and the inner shell 2-2. Heating coil 3 is set in two sections, with the spacing between the lower section tubes being smaller than that between the upper section. Both sections of heating coil 3 can be controlled independently. In the early stage of the reaction, both sections can be turned on simultaneously to achieve rapid heating. In the later stage, only the lower section of heating coil 3 can be turned on to maintain the temperature at the bottom of the reaction tank 2, thereby achieving energy saving. A motor 4 is fixedly installed on the upper part of the reaction tank 2. A stirring shaft 5 is rotatably installed inside the reaction tank 2 through bearings. The output shaft of the motor 4 is connected to the stirring shaft 5. An axial flow impeller 6 is fixedly installed at the lower end of a stirring shaft 5. A stirring sleeve 7 is rotatably mounted on the stirring shaft 5 via a sealed bearing. A radial flow impeller 8 is fixedly mounted on the stirring sleeve 7. A synchronous differential mechanism 9 connected to the stirring sleeve 7 and the stirring shaft 5 is provided inside the inner shell 2-2. An exhaust pipe 10 is located on the upper part of the reaction tank 2, behind the feed pipe. One end of the exhaust pipe 10 is provided with a spiral heat-conducting pipe 11, which is fixedly sleeved on the feed pipe. One end of the spiral heat-conducting pipe 11 is connected to an external exhaust gas treatment device. A protective insulation cylinder 12 is fixedly sleeved on the feed pipe. The spiral heat-conducting pipe 11 is fixedly installed inside the protective insulation cylinder 12. The protective insulation cylinder 12 can provide protection and heat insulation for the spiral heat-conducting pipe 11, reducing the waste of heat energy on the spiral heat-conducting pipe 11. The synchronous differential mechanism 9 includes: A fixed shell 9-1 is fixedly installed on the inner top wall of the inner shell 2-2. The upper end of the stirring sleeve 7 is rotatably inserted into the fixed shell 9-1 through a bearing. A rotating rod 9-2 is rotatably installed in the fixed shell 9-1 at the right side of the stirring sleeve 7 through a bearing. Two gears, numbered 9-3, are fixedly mounted on the stirring shaft 5 and the rotating rod 9-2, respectively. Two gears, numbered 9-4, are fixedly mounted on the upper end of the stirring sleeve 7 and the rotating rod 9-2. The first gear 9-3 and the second gear 9-4 are meshed together. The diameter of the first gear 9-3 is larger than that of the second gear 9-4. With the cooperation of the synchronous differential mechanism 9, not only can the axial flow impeller 6 and the radial flow impeller 8 be synchronously driven by the motor 4, reducing energy consumption, but the stirring sleeve 7 and the radial flow impeller 8 can also have a higher rotational speed than the stirring shaft 5 and the axial flow impeller 6. This allows the axial flow impeller 6 to rotate at a low speed, achieving a large-scale circulation of the fluid in the reaction tank 2 and avoiding turbulent dissipation caused by the high-speed rotation of the axial flow impeller 6. Meanwhile, the radial flow impeller 8 can rotate at high speed to generate a strong radial jet and high shear force, breaking bubbles and tearing the liquid-solid boundary layer.

[0018] When using this invention, the material is conveyed into the reaction tank 2 through the feed pipe, and the heating coil 3 and motor 4 are started. The heating coil 3 heats the material in the reaction tank, and the motor 4 drives the stirring shaft 5 to rotate. The stirring shaft 5 drives the first gear 9-3 and the axial flow impeller 6 connected to it to rotate. The first gear 9-3 meshes with the second gear 9-4 on the rotating rod 9-2, which in turn causes the rotating rod 9-2 to rotate. The rotating rod 9-2 drives the first gear 9-3 connected to it to rotate. The first gear 9-3 meshes with the second gear 9-4 on the stirring sleeve 7, which in turn drives the stirring sleeve. 7 rotates, and the stirring sleeve 7 drives the radial flow impeller 8 to rotate. At this time, the low-speed axial flow impeller 6 can generate strong axial flow in the fluid in the reaction tank 2, realize large-scale circulation, ensure uniform suspension of solid particles, and prevent sedimentation. The high-speed radial flow impeller 8 can provide strong shear force to ensure uniform mixing of materials and enhance the mass transfer process. After the leaching reaction is completed, the high-temperature gas in the reaction tank 2 can be discharged to the spiral heat conduction pipe 11 through the exhaust pipe 10, and the valve of the discharge pipe is opened for unloading. The spiral heat conduction pipe 11 can recover the residual heat in the gas and preheat the material entering the reaction tank 2 through the feed pipe.

[0019] Compared with the prior art, the beneficial effects of this utility model are: By cooperating with the motor 4, stirring shaft 5, axial flow impeller 6, stirring sleeve 7, radial flow impeller 8 and synchronous differential mechanism 9, a combination of large circulation and strong shear can be achieved in the reaction tank 2, which significantly improves the mixing uniformity and reaction efficiency of the materials. The waste heat in the exhaust gas can be used to preheat the subsequent materials through the spiral heat pipe 11, so as to realize the recovery and utilization of heat energy and achieve energy saving effect. The structural strength of the support frame 1 can be improved by reinforcing the stiffener 15, and the vibration damping seat 14 can provide vibration damping and buffering for the equipment, reducing the adverse effects of vibration on the equipment during the reaction process. The heat loss during the reaction process in the reaction vessel 2 can be reduced by the heat insulation plate 13. At the same time, the disassembly and assembly of a single heat insulation plate 13 is also relatively convenient. When a heat insulation plate 13 is damaged, it is not necessary to remove the entire heat insulation layer composed of several heat insulation plates 13.

[0020] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency and energy-saving nickel-cobalt co-leaching reaction device, comprising a support frame (1) and a reaction tank (2), wherein the reaction tank (2) is fixedly installed on the upper part of the support frame (1), the reaction tank (2) is composed of an outer shell (2-1) and an inner shell (2-2), the inner shell (2-2) is fixedly installed inside the outer shell (2-1), and the upper and lower sides of the reaction tank (2) are respectively provided with a feed pipe and a discharge pipe; Its features are, It also includes: Heating coil (3) is fixedly installed in the cavity formed between the outer shell (2-1) and the inner shell (2-2). A motor (4) is fixedly installed on the upper part of the reaction tank (2). A stirring shaft (5) is rotatably installed inside the reaction tank (2) through a bearing. The output shaft of the motor (4) is connected to the stirring shaft (5). An axial flow impeller (6) is fixedly installed at the lower end of a stirring shaft (5). A stirring sleeve (7) is rotatably mounted on the stirring shaft (5) through a sealed bearing. A radial flow impeller (8) is fixedly mounted on the stirring sleeve (7). A synchronous differential mechanism (9) connected to the stirring sleeve (7) and the stirring shaft (5) is provided inside the inner shell (2-2). The exhaust pipe (10) is located on the upper part of the reaction tank (2) at the rear side of the feed pipe. One end of the exhaust pipe (10) is provided with a spiral heat-conducting pipe (11), which is fixedly sleeved on the feed pipe. One end of the spiral heat-conducting pipe (11) is connected to an external exhaust gas treatment device.

2. The high-efficiency and energy-saving nickel-cobalt combined leaching reaction equipment according to claim 1, characterized in that: The synchronous differential mechanism (9) includes: A fixed shell (9-1) is fixedly installed on the inner top wall of the inner shell (2-2). The upper end of the stirring sleeve (7) is inserted into the fixed shell (9-1) through a bearing. A rotating rod (9-2) is installed in the fixed shell (9-1) at the right side of the stirring sleeve (7) through a bearing. There are two gears (9-3), which are fixedly mounted on the stirring shaft (5) and the rotating rod (9-2) respectively. Gears (9-4) are fixedly mounted on the upper end of the stirring sleeve (7) and the rotating rod (9-2). Gears (9-3) and gears (9-4) mesh with each other. The diameter of gears (9-3) is larger than that of gears (9-4).

3. The high-efficiency and energy-saving nickel-cobalt combined leaching reaction equipment according to claim 1, characterized in that: A protective insulation cylinder (12) is fixedly sleeved on the feed pipe, and a spiral heat-conducting pipe (11) is fixedly installed inside the protective insulation cylinder (12).

4. The high-efficiency and energy-saving nickel-cobalt combined leaching reaction equipment according to claim 1, characterized in that: The outer side of the reaction vessel (2) has several opposing insulation plates (13) with rounded corners, and adjacent insulation plates (13) are connected by snap fasteners.

5. The high-efficiency and energy-saving nickel-cobalt combined leaching reaction equipment according to claim 1, characterized in that: The heating coil (3) is configured in two sections, with the spacing between the lower section tubes being smaller than that between the upper section tubes.

6. The high-efficiency and energy-saving nickel-cobalt combined leaching reaction equipment according to claim 1, characterized in that: The bottom of the support frame (1) is provided with several vibration damping seats (14), and the support frame (1) is provided with several reinforcing ribs (15).

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