Hydrometallurgy dissolution reactor
By setting up an extrusion pit on the outer peripheral surface of the heat exchange tube of the hydrometallurgy dissolution reactor and an extrusion projection on the inner peripheral surface, the turbulence of bauxite slurry is formed, and the problem of easy scaling of the existing reactor is solved, and the effect of reducing equipment size, reducing wear and extending service life is achieved.
Patent Information
- Application Number
- CN202421590366.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The existing hydrometallurgical dissolution reactors are prone to scale during the heat exchange process, resulting in increased equipment size, increased wear and shorter service life.
Several extrusion pits formed inwardly squeezed are provided on the outer peripheral surface of the heat exchange tube, and extrusion projections are formed in the corresponding position of the inner peripheral surface, resulting in the formation of turbulence of the bauxite slurry, reducing the scaling phenomenon of silicon impurities, and reducing flow velocity and friction.
Through structural design, reduce equipment size, reduce wear, improve service life, reduce scale and improve heat exchange efficiency.
Smart Images
Figure CN222846782U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, in particular to a hydrometallurgical dissolution reactor. Background Art
[0002] Hydrometallurgy is a method of bringing ores, concentrates enriched by beneficiation or other raw materials into contact with aqueous solutions or other liquids, and then transferring the useful metals contained in the raw materials into the liquid phase through chemical reactions, and then separating and enriching the various useful metals contained in the liquid phase, and finally recovering them in the form of metals or other compounds. It mainly includes unit operations such as leaching, liquid-solid separation, solution purification, metal extraction from solution and wastewater treatment.
[0003] During the hydrometallurgical process, the heat exchange between steam and bauxite slurry is completed by using a dissolution reactor. In the existing dissolution reactor structure, in order to avoid scaling inside the reactor, the flow rate of the bauxite slurry usually needs to be large enough, which makes the passage inside the reactor for the bauxite slurry to pass through long enough, resulting in a larger size of the entire equipment, and also causing more serious wear of the passage inside the reactor for the bauxite slurry to pass through, thereby reducing the service life.
[0004] Therefore, how to provide a hydrometallurgical dissolution reactor with a simpler and more reasonable structural design, which can reduce the size of the equipment, reduce the wear on the equipment to increase the service life, and reduce scaling has become a technical problem to be solved by technical personnel in this field. Utility Model Content
[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to provide a hydrometallurgical dissolution reactor with a simpler and more reasonable structural design, which can reduce the size of the equipment through structural design, reduce the wear on the equipment to increase the service life, and reduce scaling.
[0006] To achieve the above-mentioned purpose, the utility model provides a hydrometallurgical dissolution reactor, comprising a reactor body, wherein the reactor body comprises an outer shell, in which a heat exchange tube is arranged; a steam channel is formed inside the outer shell, and a steam input port and a condensate discharge port are arranged on the outer shell; a metallurgical slurry input port and a metallurgical slurry output port are respectively formed at both ends of the heat exchange tube; the utility model is characterized in that a plurality of extrusion pits formed by inward extrusion are arranged on the outer peripheral surface of the heat exchange tube, and an extrusion protrusion is formed at a position corresponding to the extrusion pit on the inner peripheral surface of the heat exchange tube, so that the bauxite slurry passing through the inside of the heat exchange tube forms turbulence at the position of the extrusion protrusion.
[0007] In this way, by providing a plurality of extrusion pits formed by inward extrusion on the outer circumferential surface of the heat exchange tube, and at the same time forming extrusion protrusions at positions corresponding to the extrusion pits on the inner circumferential surface of the heat exchange tube, during operation, the bauxite slurry passing through the inside of the heat exchange tube forms turbulence at the position of the extrusion protrusion. After the bauxite slurry forms turbulence, the scaling phenomenon of silicon impurities contained in the bauxite slurry can be reduced, thereby reducing the flow rate of the bauxite slurry in the heat exchange tube, achieving the purpose of reducing the size of the equipment, reducing the friction on the inside of the heat exchange tube, and increasing the service life.
[0008] As an optimization, the extrusion pits are multiple groups arranged at intervals along the axial direction of the heat exchange tube; and each group of extrusion pits is multiple and evenly arranged along the circumferential direction of the heat exchange tube.
[0009] In this way, the arrangement of the extrusion pits on the heat exchange tube is more reasonable, and the number and arrangement of the corresponding extrusion protrusions are also more reasonable, which can better form turbulence.
[0010] As an optimization, the distance between the inner peripheral wall of the heat exchange tube and the outer surface of the extrusion protrusion is greater than or equal to one sixth of the inner diameter of the heat exchange tube.
[0011] In this way, the inwardly protruding size of the extrusion protrusion is more reasonable.
[0012] Furthermore, the spacing between two adjacent groups of extrusion protrusions is greater than or equal to the inner diameter of the heat exchange tube.
[0013] In this way, the spacing between two adjacent groups of extrusion protrusions is designed more reasonably.
[0014] As an optimization, the outer shell includes an outer shell tube in the middle, and a steam input port and a condensate discharge port are respectively arranged on the side walls at both ends of the outer shell tube; end cover plates are respectively arranged at both ends of the outer shell tube, and installation and fixing holes are respectively arranged on the end cover plates, and the two ends of the heat exchange tube are respectively installed and fixed in the installation and fixing holes; a confluence barrel with a barrel-shaped structure design is respectively arranged on the outer side of the end cover plate, and the open end of the confluence barrel is connected and fixed to the outer side of the end cover plate; metallurgical slurry input ports and metallurgical slurry output ports are respectively arranged on the confluence barrels.
[0015] In this way, the structural design of the entire reactor is simpler and more reasonable, and can better provide heat exchange between steam and bauxite slurry.
[0016] As an optimization, a first connecting pipe is respectively connected to the steam inlet and the condensate discharge outlet, and a first connecting flange is respectively connected to the first connecting pipe; a second connecting pipe is respectively connected to the metallurgical slurry inlet and the metallurgical slurry outlet, and a second connecting flange is respectively connected to the second connecting pipe.
[0017] In this way, it is more convenient to connect with external pipelines.
[0018] As an optimization, three installation fixing holes are distributed in a triangular shape on the end cover plate; and the heat exchange tubes are three distributed in a triangular shape.
[0019] In this way, the design has three heat exchange tubes, which can improve the heat exchange efficiency between steam and bauxite slurry.
[0020] As an optimization, the diameter of the end cover plate is set larger than the diameter of the outer shell tube; and a plurality of screw holes evenly distributed along the circumferential direction are set on the edge of the end cover plate; a connecting ring is sleeved and fixed on the open end of the confluence barrel, and the connecting ring is set in contact with the edge of the end cover plate, and screw insertion holes are set on the connecting ring respectively corresponding to the screw holes.
[0021] In this way, it is more convenient to install and fix the end cover plate and the junction barrel, and it is more convenient to disassemble and assemble.
[0022] As an optimization, the confluence barrel includes a confluence pipe section and an elliptical shell head connected to the outer end of the confluence pipe section.
[0023] In this way, the structural design of the manifold is simpler and more reasonable, and is more convenient to process and manufacture.
[0024] In summary, the use of the above equipment to complete the heat exchange between steam and bauxite slurry can reduce scaling; and the above equipment can reduce the size of the equipment through structural design, which can reduce the wear on the equipment and increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of a hydrometallurgical dissolution reactor in a specific embodiment of the utility model (due to the large size of the equipment, only the rear half of the equipment is captured).
[0026] Figure 2 yes Figure 1 Schematic diagram of the structure after rotation by an angle.
[0027] Figure 3 yes Figure 1 Schematic diagram of the main view.
[0028] Figure 4 yes Figure 1 Schematic diagram of the right side.
[0029] Figure 5 yes Figure 1 Schematic diagram of the left side.
[0030] Figure 6 yes Figure 1 Schematic top view of .
[0031] Figure 7 yes Figure 1 Schematic diagram of the structure of the heat exchange tubes inside the hydrometallurgical dissolution reactor.
[0032] Figure 8 yes Figure 7 AA cross-sectional view of .
[0033] Fig. 9 yes Figure 7 BB cross-sectional view. DETAILED DESCRIPTION
[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation on the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0035] like Figures 1 to 9 As shown, a hydrometallurgical dissolution reactor comprises a reactor body, wherein the reactor body comprises an outer shell 1, in which a heat exchange tube 2 is arranged; a steam channel is formed inside the outer shell, and a steam input port and a condensate discharge port are arranged on the outer shell; a metallurgical slurry input port and a metallurgical slurry output port are respectively formed at both ends of the heat exchange tube; it is characterized in that a plurality of extrusion pits 3 formed by inward extrusion are arranged on the outer peripheral surface of the heat exchange tube, and an extrusion protrusion 4 is formed at a position corresponding to the extrusion pits on the inner peripheral surface of the heat exchange tube, so that the bauxite slurry passing through the inside of the heat exchange tube forms turbulence at the position of the extrusion protrusion.
[0036] In this way, by providing a plurality of extrusion pits formed by inward extrusion on the outer circumferential surface of the heat exchange tube, and at the same time forming extrusion protrusions at positions corresponding to the extrusion pits on the inner circumferential surface of the heat exchange tube, during operation, the bauxite slurry passing through the inside of the heat exchange tube forms turbulence at the position of the extrusion protrusion. After the bauxite slurry forms turbulence, the scaling phenomenon of silicon impurities contained in the bauxite slurry can be reduced, thereby reducing the flow rate of the bauxite slurry in the heat exchange tube, achieving the purpose of reducing the size of the equipment, reducing the friction on the inside of the heat exchange tube, and increasing the service life.
[0037] In this specific implementation manner, the extrusion pits are a plurality of groups arranged at intervals along the axial direction of the heat exchange tube; and each group of extrusion pits is a plurality of groups evenly arranged along the circumferential direction of the heat exchange tube.
[0038] In this way, the arrangement of the extrusion pits on the heat exchange tube is more reasonable, and the number and arrangement of the corresponding extrusion protrusions are also more reasonable, which can better form turbulence. Specifically, the number of each group of extrusion pits can be two, three, four, five or six; preferably three.
[0039] In this specific embodiment, the distance between the inner peripheral wall of the heat exchange tube and the outer surface of the extrusion protrusion is greater than or equal to one sixth of the inner diameter of the heat exchange tube.
[0040] In this way, the inwardly protruding size of the extrusion protrusion is more reasonable.
[0041] Furthermore, the spacing between two adjacent groups of extrusion protrusions is greater than or equal to the inner diameter of the heat exchange tube.
[0042] In this way, the spacing between two adjacent groups of extrusion protrusions is designed more reasonably.
[0043] In this specific embodiment, the outer shell includes an outer shell tube 5 in the middle, and a steam input port and a condensate discharge port are respectively arranged on the side walls at both ends of the outer shell tube; end cover plates 6 are respectively arranged at both ends of the outer shell tube, and installation and fixing holes are respectively arranged on the end cover plates, so that the two ends of the heat exchange tube are respectively installed and fixed in the installation and fixing holes; a confluence barrel 7 with a barrel-shaped structure design is respectively arranged on the outer side of the end cover plate, and the open end of the confluence barrel is connected and fixed to the outer side of the end cover plate; metallurgical slurry input ports and metallurgical slurry output ports are respectively arranged on the confluence barrels.
[0044] In this way, the structural design of the entire reactor is simpler and more reasonable, and can better provide heat exchange between steam and bauxite slurry.
[0045] In this specific embodiment, a first connecting pipe 8 is respectively connected to the steam input port and the condensate discharge port, and a first connecting flange 9 is respectively connected to the first connecting pipe; a second connecting pipe 10 is respectively connected to the metallurgical slurry input port and the metallurgical slurry output port, and a second connecting flange 11 is respectively connected to the second connecting pipe.
[0046] In this way, it is more convenient to connect with external pipelines.
[0047] In this specific implementation manner, three installation fixing holes are distributed in a triangular shape on the end cover plate; and the number of the heat exchange tubes is three and distributed in a triangular shape.
[0048] In this way, the design has three heat exchange tubes, which can improve the heat exchange efficiency between steam and bauxite slurry.
[0049] In this specific embodiment, the diameter of the end cover plate is larger than the diameter of the outer shell tube; and a plurality of screw holes evenly distributed along the circumferential direction are set on the edge of the end cover plate; a connecting ring 12 is sleeved and fixed on the open end of the confluence barrel, and the connecting ring is set in contact with the edge of the end cover plate, and screw insertion holes are set on the connecting ring respectively corresponding to the screw holes.
[0050] In this way, it is more convenient to install and fix the end cover plate and the junction barrel, and it is more convenient to disassemble and assemble.
[0051] In this specific implementation, the manifold barrel includes a manifold section 13 and an elliptical shell head 14 connected to the outer end of the manifold section.
[0052] In this way, the structural design of the manifold is simpler and more reasonable, and is more convenient to process and manufacture.
[0053] Specifically, the hydrometallurgical dissolution reactor also includes monitoring, control and safety accessories (not shown in the figure).
[0054] In summary, the use of the above equipment to complete the heat exchange between steam and bauxite slurry can reduce scaling; and the above equipment can reduce the size of the equipment through structural design, which can reduce the wear on the equipment and increase the service life.
[0055] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A hydrometallurgical dissolution reactor, comprising a reactor body, the reactor body comprising an outer shell, a heat exchange tube is arranged in the outer shell; a steam channel is formed inside the outer shell, and a steam input port and a condensed water discharge port are arranged on the outer shell; a metallurgical slurry input port and a metallurgical slurry output port are respectively formed at both ends of the heat exchange tube; characterized in that; A plurality of extrusion pits formed by inward extrusion are arranged on the outer circumference of the heat exchange tube, and extrusion protrusions are formed at positions corresponding to the extrusion pits on the inner circumference of the heat exchange tube, so that the bauxite slurry passing through the inside of the heat exchange tube forms turbulence at the extrusion protrusions.
2. A hydrometallurgical dissolution reactor according to claim 1, characterized in that: The extrusion pits are multiple groups arranged at intervals along the axial direction of the heat exchange tube; and each group of extrusion pits is multiple and evenly arranged along the circumferential direction of the heat exchange tube.
3. A hydrometallurgical dissolution reactor according to claim 1, characterized in that: The distance between the inner peripheral wall of the heat exchange tube and the outer surface of the extrusion protrusion is greater than or equal to one sixth of the inner diameter of the heat exchange tube.
4. A hydrometallurgical dissolution reactor according to claim 1, characterized in that: The outer shell includes an outer shell tube in the middle, and a steam input port and a condensate discharge port are respectively arranged on the side walls at both ends of the outer shell tube; end cover plates are respectively arranged at both ends of the outer shell tube, and mounting and fixing holes are respectively arranged on the end cover plates, so that the two ends of the heat exchange tube are respectively installed and fixed in the mounting and fixing holes; a confluence barrel with a barrel-shaped structure design is respectively arranged on the outer side of the end cover plate, and the open end of the confluence barrel is connected and fixed to the outer side of the end cover plate; a metallurgical slurry input port and a metallurgical slurry output port are respectively arranged on the confluence barrel.
5. A hydrometallurgical dissolution reactor as claimed in claim 4, characterized in that: A first connecting pipe is connected to the steam input port and the condensate discharge port, and a first connecting flange is connected to the first connecting pipe; a second connecting pipe is connected to the metallurgical slurry input port and the metallurgical slurry output port, and a second connecting flange is connected to the second connecting pipe.
6. A hydrometallurgical dissolution reactor as claimed in claim 4, characterized in that: There are three installation fixing holes distributed in a triangle on the end cover plate; and there are three heat exchange tubes distributed in a triangle.
7. A hydrometallurgical dissolution reactor according to claim 4, characterized in that: The diameter of the end cover plate is larger than the diameter of the outer shell tube; and a plurality of screw holes evenly distributed along the circumferential direction are arranged on the edge of the end cover plate; a connecting ring is sleeved and fixed on the open end of the confluence barrel, and the connecting ring is arranged on the edge of the end cover plate, and screw insertion holes are arranged on the connecting ring respectively corresponding to the screw holes.
8. A hydrometallurgical dissolution reactor as claimed in claim 4, characterized in that: The confluence barrel comprises a confluence pipe section and an elliptical shell head connected to the outer end of the confluence pipe section.