Acidification flash blowing reactor

Abstract

The utility model provides an acidification flash blowing reactor, and belongs to the technical field of recycling of cyanide residues of gold mines. The reactor comprises a shell, and a liquid inlet, a liquid outlet, an exhaust port and a stirring device which are arranged on the shell. A first partition wall and a second partition wall which divide the inner space of the shell into a first cavity, a second cavity and a third cavity are arranged in the shell. An emptying device is arranged below the shell and comprises a pipeline, an emptying connector and a dredging hole are formed in the side wall of the pipeline, the dredging hole is opposite to the emptying connector, and the emptying connector is connected with the bottom walls of the first cavity, the second cavity and the third cavity so that the emptying device can be communicated with the three cavities. A connector is further arranged at one end of the pipeline so that the pipeline can be connected with a tap water pipe or a water pump, the three cavities can be used for emptying ore pulp at the same time after the reaction is finished, and through impact and driving of water flow in the pipeline, the emptying efficiency is improved, and the hole blocking phenomenon is reduced.

Description

Technical Field

[0001] This application belongs to the field of gold mine cyanide slag recycling technology, specifically involving a highly integrated, closed, horizontal acidification flash blowing reactor. Background Technology

[0002] Cyanide slag is a solid waste generated during the gold smelting process, characterized by its large quantity, high toxicity, and significant pollution. If not properly disposed of, the cyanide and heavy metals contained in the slag can easily cause serious harm to the ecological environment. Therefore, how to recycle cyanide slag and turn it into a valuable resource is a research topic of great concern to gold mining companies both domestically and internationally.

[0003] Cyanide removal is the most important part of cyanide slag recovery. Currently, the most commonly used cyanide removal technology is acidification recovery. Traditional acidification recovery uses acidification mixing tanks, which are often poorly integrated, occupy a large area, have low exhaust efficiency, low slurry discharge efficiency, and are prone to clogging.

[0004] In view of this, it is necessary to design an improved acidification flash blow reactor to solve the above problems. Summary of the Invention

[0005] This application provides an acidification flash blow reactor, which is mainly used for decyanation treatment in cyanide slag recovery. It aims to solve the problems of low integration, large footprint, low exhaust efficiency, low venting efficiency, and easy clogging of existing equipment.

[0006] To solve the above-mentioned technical problems, the technical solution adopted in this application is:

[0007] An acidification flash blow reactor is provided, comprising a sealed shell and an inlet, a outlet, an exhaust port, and a stirring device disposed on the shell. The shell is provided with a first partition wall and a second partition wall dividing the internal space of the shell into a first chamber, a second chamber, and a third chamber. An evacuation device is disposed below the shell. The evacuation device includes a pipe, and the side wall of the pipe is provided with an evacuation port and a drainage hole. The drainage hole is positioned opposite to the evacuation port. The evacuation port is connected to the bottom walls of the first, second, and third chambers respectively, thereby communicating the evacuation device with the three chambers. A connector is also provided at one end of the pipe.

[0008] As a further improvement of this application, a first communicating device is provided on the top wall of the first chamber and the second chamber, and a second communicating device is provided on the top wall of the second chamber and the third chamber. A first overflow hole and a second overflow hole are respectively provided on the first partition wall and the second partition wall.

[0009] As a further improvement of this application, the first connecting device includes a first through hole and a second through hole respectively disposed on the top walls of the first chamber and the second chamber, and a pipe connecting the first through hole and the second through hole. The second connecting device includes a third through hole and a fourth through hole respectively disposed on the top walls of the second chamber and the third chamber, and a pipe connecting the third through hole and the fourth through hole.

[0010] As a further improvement of this application, the horizontal height of the plane where the first overflow hole is located is higher than the horizontal height of the plane where the second overflow hole is located.

[0011] As a further improvement of this application, the horizontal height of the plane where the liquid inlet is located is higher than the horizontal height of the plane where the first overflow hole is located.

[0012] As a further improvement of this application, the first chamber is connected to the liquid inlet, and an exhaust port is provided on the top wall of the first chamber.

[0013] As a further improvement to this application, the third chamber is connected to the drain port.

[0014] As a further improvement of this application, the stirring device includes a motor with a drive shaft, a stirring shaft connected to the drive shaft, and an impeller disposed on the stirring shaft; the motor is disposed on the outer wall of the housing, and one end of the stirring shaft connected to the impeller extends into the interior of the chamber; an aerator is disposed below the impeller.

[0015] As a further improvement of this application, the stirring device includes a first stirring device, a second stirring device, and a third stirring device for stirring the first chamber, the second chamber, and the third chamber, respectively.

[0016] As a further improvement of this application, the housing is also provided with a first acid filling port communicating with the first chamber, a second acid filling port communicating with the second chamber, and a third acid filling port communicating with the third chamber.

[0017] The beneficial effects of this application are:

[0018] The acidification flash blow reactor provided in this application integrates multiple reaction chambers within a closed shell. Overflow holes and connecting devices for liquid and gas flow are provided between each reaction chamber, respectively. A venting device connecting the bottoms of each reaction chamber is located at the bottom of the shell, with one side of the venting device connected to a water pipe or pump. This design not only improves the integration and sealing of the equipment, but also allows for simultaneous slurry venting from all three chambers after the reaction. The impact and agitation of the water flow in the pipes enhances venting efficiency, reduces clogging, and achieves efficient space utilization while maintaining high processing efficiency.

[0019] The acidification flash blow reactor provided in this application is also equipped with three stirring devices on the shell, which extend into the interior of each reaction chamber. An aerator is installed at the bottom of the impeller of the stirring device. In actual use, the compressed gas output by the aerator can continuously disperse the gas generated inside the slurry during the reaction, so that the toxic acid gas can be quickly discharged through the exhaust port, thereby improving the exhaust efficiency.

[0020] In summary, compared with the dispersed acidification stirred tank in the prior art, the acidification flash blowing reactor provided in this application effectively saves equipment space, improves exhaust and venting efficiency, and reduces equipment, site and time costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the acidification flash blow reactor provided in this application. Detailed Implementation

[0022] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0024] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0027] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0028] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0029] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0030] How to recycle cyanide slag generated during the gold smelting process and turn it into a valuable resource has always been a research topic of great concern to gold mining companies both domestically and internationally. Cyanide removal is the most important part of the cyanide slag recovery process. Currently, the most commonly used cyanide removal technology is acidification recovery. Traditional acidification recovery methods use acidification mixing tanks, which often suffer from problems such as low equipment integration, large footprint, low exhaust efficiency, and easy clogging.

[0031] To address the aforementioned technical problems, this application discloses an acidification flash blow reactor that integrates multiple reaction chambers within a closed shell. Overflow holes and connecting devices for liquid and gas flow are provided between each reaction chamber, and a venting device connecting the bottoms of each reaction chamber is located at the bottom of the shell. One side of the venting device's pipe is connected to a water pipe or pump. This design not only improves the integration and sealing of the equipment but also allows for simultaneous slurry venting from all three chambers after the reaction. The impact and agitation of the water flow in the pipes enhances venting efficiency, reduces clogging, and achieves efficient space utilization while maintaining high treatment efficiency. The aeration structure inside the reaction chambers facilitates the continuous dispersion of gases generated within the slurry during the reaction, allowing toxic acid gases to be rapidly discharged through the exhaust ports, thus improving exhaust efficiency.

[0032] Please see Figure 1 This is a schematic diagram of the overall structure of the acidification flash blowing reactor provided in the embodiments of this application.

[0033] The acidification flash-blowing reactor provided in this embodiment includes a sealed shell 1 and an inlet 5, a outlet 10, an exhaust outlet 6, and a stirring device 7 disposed on the shell 1. The shell 1 is provided with a first partition wall 21 and a second partition wall 22 dividing the internal space of the shell 1 into a first chamber 41, a second chamber 42, and a third chamber 43. A first overflow hole 31 and a second overflow hole 32 are respectively disposed on the first partition wall 21 and the second partition wall 22. A first connecting device 91 is disposed on the top wall of the first chamber 41 and the second chamber 42, and a second connecting device 92 is disposed on the top wall of the second chamber 42 and the third chamber 43.

[0034] The first chamber 41 and the second chamber 42 are connected through the first connecting device 91 and the first overflow hole 31, and the second chamber 42 and the third chamber 43 are connected through the second connecting device 92 and the second overflow hole 32.

[0035] In this embodiment, the first connecting device 91 includes a first through hole and a second through hole respectively disposed on the top walls of the first chamber 41 and the second chamber 42, and a pipe connecting the first through hole and the second through hole. The second connecting device 92 includes a third through hole and a fourth through hole respectively disposed on the top walls of the second chamber 42 and the third chamber 43, and a pipe connecting the third through hole and the fourth through hole.

[0036] The first chamber 41 is connected to the liquid inlet 5, and the exhaust port 6 is located on the top wall of the first chamber 41.

[0037] With this configuration, the second connecting device 92 connects the second chamber 42 to the third chamber 43, and the first connecting device 91 connects the first chamber 41 to the second chamber 42, so that the gases generated by the reactions in the first chamber 41, the second chamber 42, and the third chamber 43 can all be discharged through the exhaust port 6.

[0038] The third chamber 43 is connected to the drain port 10.

[0039] The horizontal height of the plane where the first overflow hole 31 is located is higher than the horizontal height of the plane where the second overflow hole 32 is located, and the horizontal height of the plane where the liquid inlet 5 is located is higher than the horizontal height of the plane where the first overflow hole 31 is located. That is, the horizontal heights of the aforementioned three objects from top to bottom are, in order, the liquid inlet 5, the first overflow hole 31, and the second overflow hole 32.

[0040] With this configuration, the slurry flows into the first chamber 41 from the inlet 5 for stirring and reaction, then overflows through the first overflow hole 31 into the second chamber 42 for stirring and reaction, then overflows through the second overflow hole 32 into the third chamber 43 for stirring and reaction, and finally is discharged from the outlet 10.

[0041] The stirring device 7 includes a first stirring device 71, a second stirring device 72, and a third stirring device 73, which are respectively used for stirring the first chamber 41, the second chamber 42, and the third chamber 43.

[0042] In this embodiment, the first stirring device 71, the second stirring device 72, and the third stirring device 73 have basically the same structure and are all used for stirring materials. Here, only the structure of the first stirring device 71 will be described in detail, and the structures of the second stirring device 72 and the third stirring device 73 will not be described in detail.

[0043] The first stirring device 71 includes a motor 711 with a drive shaft 714, a stirring shaft 712 connected to the drive shaft 714, and an impeller 713 mounted on the stirring shaft 712. The motor 711 is mounted on the outer wall of the housing 1, and the side of the stirring shaft 712 connected to the impeller 713 extends into the interior of the chamber. With this configuration, when the operator starts the motor 711 located on the housing 1, the motor 711 drives the drive shaft 714 to rotate, and the stirring shaft 712 connected to the drive shaft 714 and the impeller 713 mounted on the stirring shaft 712 also rotate accordingly, thereby causing the slurry inside the chamber to move.

[0044] The acidification flash reactor provided in this embodiment also includes an aerator 11 disposed below the impeller 713. In use, the compressed gas output from the aerator 11 can continuously disperse the gas in the slurry, allowing the toxic acid gas generated in each chamber to be rapidly discharged.

[0045] The housing 1 is also provided with a first acid addition port 81 communicating with the first chamber 41, a second acid addition port 82 communicating with the second chamber 42, and a third acid addition port 83 communicating with the third chamber 43. In actual use, acidic materials can be added to the first chamber 41, the second chamber 42, and the third chamber 43 respectively through the first acid addition port 81, the second acid addition port 82, and the third acid addition port 83.

[0046] The acidification flash-blowing reactor provided in this application embodiment also includes an venting device 12 and a saddle 13 disposed below the shell.

[0047] The venting device 12 includes a pipe 121. Three venting ports 122 and three unclogging holes 123 are provided on the side wall of the pipe 121. The three unclogging holes 123 are positioned opposite to the three venting ports 122. The three venting ports 122 are respectively connected to the bottom walls of the first chamber 41, the second chamber 42, and the third chamber 43 to connect the venting device 12 to the three chambers. One end of the pipe 121 is also provided with a connector 124 for connecting to a water pipe or a water pump. In actual use, by simultaneously opening the three venting ports 122 and the water pipe (or water pump) connected to one end of the pipe 121, the slurry inside the first, second, and third chambers can flow into the pipe 121 simultaneously and be rapidly vented under the impact and force of the water flow. If blockage occurs, it can be cleared through the corresponding unclogging hole 123.

[0048] Preferably, the venting device 12 is detachable for easy cleaning.

[0049] The saddle 13 provides support and stability to the shell 1.

[0050] The shell 1 is made of 304 stainless steel. In addition, the aerator 11, liquid inlet 5, liquid outlet 10, exhaust outlet 6, venting device 12, first acid inlet 81, second acid inlet 82, third acid inlet 83 and saddle 13 are connected to the shell 1 by welding.

[0051] The working principle of this application is explained below:

[0052] Before use, this application requires inspection and ensuring that the inside of the reactor is clean and free of debris.

[0053] Please see Figure 1In use, this application first introduces the slurry to be treated through an external pipe connected to the inlet 5. Simultaneously, as the slurry flows into the first chamber 41, the first batch of concentrated sulfuric acid is added to the first chamber 41 through the first acid inlet 81. The first stirring device 71 and the aerator 11 located below the first stirring device 71 are then activated, allowing the slurry and concentrated sulfuric acid to react rapidly under stirring. The toxic acid gas generated during the reaction is discharged through aeration, and the discharged gas is transported to the next process stage through an external pipe connected to the exhaust port 6. Then, the slurry that has finished reacting in the first chamber 41 overflows into the second chamber 42 through the first overflow hole 31. At the same time, the second batch of concentrated sulfuric acid is added to the second chamber 42 through the second acid inlet 82, and the second stirring device 72 and the aerator 11 located below the second stirring device 72 are activated to complete the second stirring process. The reaction produces gas that is transported to the next process stage through the first connecting device 91 and the exhaust port 6. Then, the slurry that has finished reacting in the second chamber 42 overflows to the third chamber 43 through the second overflow hole 32. At the same time, the third batch of concentrated sulfuric acid is added to the third chamber 43 through the third acid addition port 83, and the third stirring device 73 and the aerator 11 located below the third stirring device 73 are started to complete the third stirring reaction. The gas produced in the reaction is transported to the next process stage through the second connecting device 92 and the exhaust port 6. After the reaction is completed, the valve of the drain port 10 is opened first to drain the upper layer solution, and then the valve of the venting port 122 is opened. At the same time, the tap water pipe or water pump is turned on so that the slurry remaining in the first chamber 41, the second chamber 42 and the third chamber 43 is discharged through the venting device 12 under the impact and drive of the water flow.

[0054] If blockage occurs during the venting process, clear the blockage through the corresponding unblocking hole 123 below the venting interface 122.

[0055] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. An acidification flash blow reactor, characterized in that, The device includes a sealed housing and an inlet, a outlet, an exhaust port, and a stirring device disposed on the housing. The housing is provided with a first partition wall and a second partition wall that divide the internal space of the housing into a first chamber, a second chamber, and a third chamber. A venting device is disposed below the housing. The venting device includes a pipe with a venting interface and a drain hole on its side wall. The drain hole is positioned opposite to the venting interface. The venting interface is connected to the bottom walls of the first, second, and third chambers respectively, thereby connecting the venting device to the three chambers. A connector is also provided at one end of the pipe.

2. The acidification flash blow reactor according to claim 1, characterized in that, The top walls of the first chamber and the second chamber are provided with a first connecting device, and the top walls of the second chamber and the third chamber are provided with a second connecting device; the first partition wall and the second partition wall are respectively provided with a first overflow hole and a second overflow hole.

3. The acidification flash blow reactor according to claim 2, characterized in that: The first connecting device includes a first through hole and a second through hole respectively disposed on the top walls of the first chamber and the second chamber, and a pipe connecting the first through hole and the second through hole; the second connecting device includes a third through hole and a fourth through hole respectively disposed on the top walls of the second chamber and the third chamber, and a pipe connecting the third through hole and the fourth through hole.

4. The acidification flash blow reactor according to claim 3, characterized in that: The horizontal height of the plane where the first overflow hole is located is higher than the horizontal height of the plane where the second overflow hole is located.

5. The acidification flash blow reactor according to claim 4, characterized in that: The horizontal height of the plane where the liquid inlet is located is higher than the horizontal height of the plane where the first overflow hole is located.

6. The acidification flash blow reactor according to claim 5, characterized in that: The first chamber is connected to the liquid inlet, and an exhaust port is provided on the top wall of the first chamber.

7. The acidification flash blow reactor according to claim 6, characterized in that: The third chamber is connected to the drain port.

8. The acidification flash blow reactor according to claim 1, characterized in that, The stirring device includes a motor with a drive shaft, a stirring shaft connected to the drive shaft, and an impeller disposed on the stirring shaft; the motor is disposed on the outer wall of the housing, and one end of the stirring shaft connected to the impeller extends into the interior of the chamber; an aerator is disposed below the impeller.

9. The acidification flash blow reactor according to claim 8, characterized in that: The stirring device includes a first stirring device, a second stirring device, and a third stirring device, which are respectively used for stirring the first chamber, the second chamber, and the third chamber.

10. The acidification flash blow reactor according to claim 1, characterized in that: The housing is also provided with a first acid filling port communicating with the first chamber, a second acid filling port communicating with the second chamber, and a third acid filling port communicating with the third chamber.

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