Acid leaching reaction kettle

Abstract

The utility model relates to the technical field of reaction kettle, concretely to a pickling reaction kettle, pickling reaction kettle includes kettle body and detachably sets up the kettle cover at the top of kettle body, is provided with the liquid outlet at the bottom of kettle body, is provided with first liquid inlet, second liquid inlet and exhaust port on the kettle cover, is provided with the stirring rod in the inside of kettle body on the rotary setting of kettle cover, is fixedly arranged with kettle frame on the outer wall of kettle body, is fixedly arranged with first acid -resistant mud layer on the inner wall of kettle body, is fixedly arranged with glass steel on first acid -resistant mud layer, is fixedly arranged with second acid -resistant mud layer on glass steel, is fixedly arranged with acid -resistant brick layer on second acid -resistant mud layer, and the stirring rod is located in the inside of acid -resistant brick layer, the pickling reaction kettle of the utility model, sets up first acid -resistant mud layer, glass steel, second acid -resistant mud layer and acid -resistant brick and plays the role of strengthening the acid -resistance of pickling reaction kettle, reduces the corrosion degree of pickling reaction kettle, effectively prolongs the service life of reaction kettle, effectively avoids the leakage phenomenon, reduces the security risk.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically to an acid leaching reaction vessel. Background Technology

[0002] The pH of the slurry needs to be readjusted before it can be used again. The slurry is slightly alkaline, and acid needs to be added to adjust it. Currently, acid treatment is performed on the slurry using a reaction vessel, but the existing 316L stainless steel acid leaching reaction vessel can only meet the requirements for short-term acid addition reactions. Because each acid addition to the slurry takes 80 minutes, a large amount of acid mist and particulate matter is generated during the process, and the liquid temperature reaches approximately 100℃. Therefore, the maximum service life of the 316L stainless steel acid leaching reaction vessel is only six months, during which time leakage of varying degrees may occur, posing significant safety hazards during operation. Existing stainless steel acid leaching reaction vessels exhibit leakage after long-term use, posing significant safety hazards during operation. Therefore, there is an urgent need for an acid leaching reaction vessel to solve the above problems. Utility Model Content

[0003] To address the technical problem of leakage and significant safety hazards during operation of existing stainless steel acid leaching reactors after long-term use, this utility model provides an acid leaching reactor. The reactor incorporates a first acid-resistant mud layer, fiberglass, a second acid-resistant mud layer, and acid-resistant bricks to enhance its acid resistance, reduce corrosion, and effectively extend its service life to one and a half years. This not only improves production efficiency but also effectively prevents leakage and reduces safety risks.

[0004] This utility model provides an acid leaching reactor, which includes a reactor body and a detachable reactor lid mounted on top of the reactor body. The reactor body has a drain port at its bottom, and the reactor lid has a first inlet, a second inlet, and an exhaust port. A stirring rod is rotatably mounted on the reactor lid inside the reactor body. A reactor frame is fixedly mounted on the outer wall of the reactor body, and a first acid-resistant mud layer is fixedly mounted on the inner wall of the reactor body. A fiberglass reinforced plastic (FRP) layer is fixedly mounted on the first acid-resistant mud layer, and a second acid-resistant mud layer is fixedly mounted on the FRP layer. An acid-resistant brick layer is fixedly mounted on the second acid-resistant mud layer, and the stirring rod is located inside the acid-resistant brick layer. The first acid-resistant mud layer and the FRP layer work together, with the first acid-resistant mud layer serving as the first protective layer and the FRP layer as the second protective layer. The first acid-resistant mud layer and the FRP layer form a double-layer film-type lining, which is then bonded together with the acid-resistant brick layer via the second acid-resistant mud layer.

[0005] Furthermore, the thickness of the first acid-resistant mud layer is 0.7 mm, and the thickness of the fiberglass is 0.5 mm.

[0006] Furthermore, an automatic drain valve is fixedly installed at the drain port of the reactor body, and an automatic inlet valve is fixedly installed at the first inlet of the reactor cover. A sulfuric acid tank and an acid mist scrubbing tower are installed outside the reactor body. The sulfuric acid tank is fixedly connected to and communicates with the second inlet via an inlet pipe, and the acid mist scrubbing tower is fixedly connected to and communicates with the exhaust port via an exhaust pipe. After slurrying, the liquid and sulfuric acid are thoroughly mixed to generate acidic gas and a mixed liquid. The acidic gas enters the acid mist scrubbing tower through the exhaust port and exhaust pipe, awaiting further processing. The automatic drain valve is activated, and the mixed liquid is discharged through the drain port.

[0007] Furthermore, a protective groove located inside the vessel frame is fixed to the bottom of the vessel body by several fixing ribs. A gap is left between the protective groove and the bottom of the vessel body. The automatic drain valve is fixedly connected to the drain pipe, and the bottom of the drain pipe extends to the outside of the protective groove. In the event that the acid leaching reactor still leaks, the leaked liquid will flow into the protective groove, thereby preventing the leaked liquid from falling directly onto the working ground and preventing the liquid from causing injury to the workers.

[0008] Furthermore, a level gauge is installed inside the protective groove, and a sealing layer is fixedly installed on the outer wall of the protective groove. The sealing layer can prevent leaked liquid from leaking out of the protective groove, further improving safety.

[0009] Furthermore, a bearing seat and a motor are fixedly installed on the reactor lid. The top of the stirring rod passes through the bearing in the bearing seat and is fixedly connected to it. The output shaft of the motor is fixedly connected to the top of the stirring rod and drives it to rotate. The bottom of the stirring rod is located inside the reactor body. When the motor starts, it drives the stirring rod and the bearing to rotate in the bearing seat. After the stirring rod rotates, the slurry and sulfuric acid are fully mixed, producing acidic gas and mixed liquid.

[0010] Furthermore, the stirring rod is provided with multiple stirring structures at equal intervals. Each stirring structure includes two blades fixedly mounted on the stirring rod, and the two blades are symmetrically arranged. The length of the blades of the multiple stirring structures increases sequentially from top to bottom. When the stirring rod rotates, the multiple blades rotate accordingly. The sequentially increasing blade lengths of the multiple stirring structures accelerate the uniformity of the sulfuric acid reaction and ensure that the sulfuric acid flows at the same frequency both upwards and downwards inside the reactor.

[0011] Furthermore, a first connecting plate is fixedly installed on the top of the vessel body, and a second connecting plate is fixedly installed on the bottom of the vessel lid. The first and second connecting plates are provided with screw holes, which are then fixedly connected by nuts and bolts. The vessel body and vessel lid are detachable via the first and second connecting plates.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The acid leaching reactor of this utility model is equipped with a first acid-resistant mud layer, fiberglass, a second acid-resistant mud layer, and acid-resistant bricks, which enhance the acid resistance of the acid leaching reactor, reduce the corrosion resistance of the acid leaching reactor, and effectively extend the service life of the reactor to one and a half years. After use, it not only improves production efficiency, but also effectively avoids leakage and reduces safety risks. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural schematic diagram of an acid leaching reactor according to this utility model;

[0015] Figure 2 This is a utility model Figure 1 Enlarged structural diagram of A in the middle;

[0016] Figure 3 This is a utility model Figure 1 Enlarged structural diagram of B in the middle;

[0017] Figure 4 This is a schematic diagram of the acid leaching reactor of this utility model;

[0018] The numbers in the attached diagram are:

[0019] 1. Reactor body; 11. First acid-resistant mud layer; 12. Fiberglass; 13. Second acid-resistant mud layer; 14. Acid-resistant brick layer; 15. First connecting plate; 16. Automatic drain valve; 161. Drain pipe; 17. Automatic inlet valve; 18. Inlet pipe; 19. Exhaust pipe; 2. Reactor cover; 21. Second connecting plate; 3. Stirring rod; 31. Blade; 4. Reactor frame; 5. Protective groove; 51. Fixing rib; 52. Sealing layer; 53. Level gauge; 6. Motor; 7. Sulfuric acid tank; 8. Acid mist scrubbing tower. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-4As shown, an acid leaching reactor includes a reactor body 1 and a detachable reactor cover 2 mounted on top of the reactor body 1. The reactor body 1 is an elliptical stainless steel reactor with a capacity of 16L and 10m³. A drain port is provided at the bottom of the reactor body 1. The reactor cover 2 has a first inlet, a second inlet, and an exhaust port. A stirring rod 3 is rotatably mounted on the reactor cover 2 and is located inside the reactor body 1. A reactor frame 4 is fixedly mounted on the outer wall of the reactor body 1, providing support. A first acid-resistant mud layer 11 (using adhesive) is fixedly mounted on the inner wall of the reactor body 1. The first acid-resistant mud layer 11 is fixedly mounted with a fiberglass 12 (the fiberglass 12 is constructed using a three-layer fabric and four-layer adhesive bonding method). That is, the fiberglass 12 is fixed to the inner wall of the vessel body 1 via the first acid-resistant mud layer 11. A second acid-resistant mud layer 13 is fixedly mounted on the fiberglass 12, and an acid-resistant brick layer 14 is fixedly mounted on the second acid-resistant mud layer 13. That is, the acid-resistant brick layer 14 is fixed to the fiberglass 12 via the second acid-resistant mud layer 13. The acid-resistant brick layer 14 is composed of several acid-resistant bricks, and the stirring rod 3 is located inside the acid-resistant brick layer 14. Preferably, the thickness of the first acid-resistant mud layer 11 is 0.7 mm, and the thickness of the fiberglass 12 is 0.5 mm. Preferably, the length, width, and height of the acid-resistant brick 14 are 150 mm, 200 mm, and 40 mm, respectively.

[0022] The working process of the acid leaching reactor in this embodiment is as follows: After slurrying, the liquid enters the interior of the reactor body 1 through the first inlet (specifically, inside the acid-resistant brick layer 14), and sulfuric acid enters the interior of the reactor body 1 through the second inlet (specifically, inside the acid-resistant brick layer 14). After the stirring rod 3 rotates, the liquid slurry and sulfuric acid are fully mixed to generate acidic gas and mixed liquid. The acidic gas is discharged through the exhaust port, and the mixed liquid is discharged through the drain port.

[0023] The first acid-resistant mud layer 11 and the fiberglass 12 work together, with the first acid-resistant mud layer 11 serving as the first layer of protection and the fiberglass 12 serving as the second layer of protection. The first acid-resistant mud layer 11 and the fiberglass 12 together form a double-layer film-type lining, and are then bonded together with the acid-resistant brick 14 through the second acid-resistant mud layer 13.

[0024] The existing reaction vessel has a service life of six months after acid leaching. In this embodiment, the acid leaching reaction vessel is protected by acid-resistant bricks 14, which can resist long-term corrosion by sulfuric acid. Simultaneously, a first acid-resistant mud layer 11, fiberglass 12, and a second acid-resistant mud layer 13 are used. These layers enhance the acid resistance of the reaction vessel, reduce its corrosion resistance, and effectively extend its service life to one and a half years. This not only improves production efficiency but also effectively prevents leakage and reduces safety risks.

[0025] In one possible implementation, an automatic drain valve 16 is fixedly installed at the drain port of the vessel body 1, and an automatic inlet valve 17 is fixedly installed at the first inlet of the vessel cover 2. A sulfuric acid tank 7 and an acid mist scrubbing tower 8 are installed outside the vessel body 1. The height of the sulfuric acid tank 7 is higher than the height of the vessel body 1 to facilitate the entry of sulfuric acid into the vessel body 1. The sulfuric acid tank 7 is fixedly connected to and communicates with the second inlet via an inlet pipe 18. The acid mist scrubbing tower 8 is fixedly connected to and communicates with the exhaust port via an exhaust pipe 19. When the automatic inlet valve 17 is activated, the slurry enters the vessel body 1 through the first inlet. The sulfuric acid tank 7 stores sulfuric acid, which enters the vessel body 1 through the inlet pipe 18 and the second inlet. The slurry and sulfuric acid are thoroughly mixed to produce acidic gas and a mixed liquid. The acidic gas enters the acid mist scrubbing tower 8 through the exhaust port and exhaust pipe 19 for further processing. When the automatic drain valve 16 is activated, the mixed liquid is discharged through the drain port.

[0026] Preferably, a pump body is installed outside the sulfuric acid tank 7, and the inlet and outlet of the pump body are fixedly connected and communicate with the sulfuric acid tank 7 and the liquid inlet pipe 18, respectively. When the pump body is started, the sulfuric acid in the sulfuric acid tank 7 is drawn into the interior of the vessel body 1.

[0027] In one possible implementation, a protective groove 5 located inside the vessel frame 4 is fixedly provided at the bottom of the vessel body 1 by several fixing ribs 51. A gap is left between the protective groove 5 and the bottom of the vessel body 1. The automatic drain valve 16 is fixedly connected to the drain pipe 161, and the bottom of the drain pipe 161 extends to the outside of the protective groove 5. When the slurry and sulfuric acid are thoroughly mixed to produce acidic gas and a mixed liquid, the automatic drain valve 16 is activated, and the mixed liquid is discharged through the drain port and the drain pipe 161.

[0028] In the unlikely event that the acid leaching reactor still leaks, the leaking liquid will flow into the protective groove 5, thus preventing the leaking liquid from falling directly onto the work surface and causing injury to personnel. With the protective groove 5 in place, the acid leaching reactor can still be used for a short period even if leakage occurs.

[0029] Preferably, the protective groove 5 is provided with a through hole and a sealing ring is provided at the through hole. The bottom of the drain pipe 161 passes through the through hole to the outside of the protective groove 5, and the sealing ring prevents liquid from leaking from the through hole.

[0030] In one possible implementation, a level gauge 53 is installed inside the protective groove 5, and a sealing layer 52 is fixedly installed on the outer wall of the protective groove 5. The level gauge 53 is used to detect the liquid level in the protective groove 5. When the liquid level in the protective groove 5 exceeds a set position, the operator can proceed with further processing of the liquid in the protective groove 5. The sealing layer 52 prevents liquid leakage from the protective groove 5, further improving safety.

[0031] In one possible implementation, a bearing housing and a motor 6 are fixedly mounted on the vessel lid 2. The top of the stirring rod 3 passes through and is fixedly connected to the bearing in the bearing housing. The output shaft of the motor 6 is fixedly connected to the top of the stirring rod 3 and drives it to rotate. The bottom of the stirring rod 3 is located inside the vessel body 1. When the motor 6 starts, it drives the stirring rod 3 and the bearing to rotate in the bearing housing. After the stirring rod 3 rotates, the slurry and sulfuric acid are thoroughly mixed.

[0032] In one possible implementation, the stirring rod 3 is provided with multiple stirring structures at equal intervals. Each stirring structure includes two blades 31 fixedly mounted on the stirring rod 3, and the two blades 31 are symmetrically arranged. The lengths of the blades 31 of the multiple stirring structures increase sequentially from top to bottom. When the stirring rod 3 rotates, the multiple blades 31 rotate accordingly. The sequentially increasing lengths of the blades 31 of the multiple stirring structures accelerate the uniformity of the sulfuric acid reaction and ensure that the sulfuric acid moves at the same frequency both upwards and downwards inside the reactor body 1.

[0033] Furthermore, the distance between the blades 31 of two adjacent stirring structures ranges from 10cm to 25cm, and preferably, the distance between the blades 31 of two adjacent stirring structures is 13.5cm.

[0034] In one possible implementation, a first connecting plate 15 is fixedly installed on the top of the vessel body 1, and a second connecting plate 21 is fixedly installed on the bottom of the vessel cover 2. The first connecting plate 15 and the second connecting plate 21 are provided with screw holes, which are then fixedly connected by nuts and bolts. Through the first connecting plate 15 and the second connecting plate 21, the vessel body 1 and the vessel cover 2 are detachable, thereby enabling periodic cleaning of the vessel body 1, the vessel cover 2, and the stirring rod 3.

[0035] The embodiments described above are merely preferred embodiments of this utility model and are only used to explain this utility model. They are not intended to limit the scope of implementation of this utility model. For those skilled in the art, other implementation methods can be easily made by substitution or modification based on the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. An acid leaching reactor, comprising a reactor body (1) and a reactor cover (2) detachably disposed on the top of the reactor body (1), wherein the bottom of the reactor body (1) is provided with a drain port, and the reactor cover (2) is provided with a first inlet, a second inlet, and an exhaust port, and a stirring rod (3) is rotatably disposed on the reactor cover (2) and located inside the reactor body (1), characterized in that, A vessel frame (4) is fixedly installed on the outer wall of the vessel body (1). A first acid-resistant mud layer (11) is fixedly installed on the inner wall of the vessel body (1). A fiberglass (12) is fixedly installed on the first acid-resistant mud layer (11). A second acid-resistant mud layer (13) is fixedly installed on the fiberglass (12). An acid-resistant brick layer (14) is fixedly installed on the second acid-resistant mud layer (13). The stirring rod (3) is located inside the acid-resistant brick layer (14).

2. The acid leaching reactor according to claim 1, characterized in that, The thickness of the first acid-resistant mud layer (11) is 0.7 mm, and the thickness of the fiberglass (12) is 0.5 mm.

3. The acid leaching reactor according to claim 1, characterized in that, An automatic drain valve (16) is fixedly installed at the drain port of the vessel body (1), and an automatic inlet valve (17) is fixedly installed at the first inlet of the vessel cover (2). A sulfuric acid tank (7) and an acid mist scrubbing tower (8) are installed outside the vessel body (1). The sulfuric acid tank (7) is fixedly connected to and communicates with the second inlet through the inlet pipe (18), and the acid mist scrubbing tower (8) is fixedly connected to and communicates with the exhaust port through the exhaust pipe (19).

4. The acid leaching reactor according to claim 3, characterized in that, The bottom of the vessel body (1) is fixedly provided with a protective groove (5) located inside the vessel frame (4) by a number of fixing ribs (51). There is a gap between the protective groove (5) and the bottom of the vessel body (1). The automatic drain valve (16) is fixedly connected to the drain pipe (161). The bottom of the drain pipe (161) extends to the outside of the protective groove (5).

5. The acid leaching reactor according to claim 4, characterized in that, A level gauge (53) is installed inside the protective groove (5), and a sealing layer (52) is fixedly installed on the outer wall of the protective groove (5).

6. The acid leaching reactor according to claim 1, characterized in that, The lid (2) is fixedly provided with a bearing seat and a motor (6). The top of the stirring rod (3) passes through the bearing in the bearing seat and is fixedly connected to it. The output shaft of the motor (6) is fixedly connected to the top of the stirring rod (3) and drives it to rotate. The bottom of the stirring rod (3) is located inside the body (1).

7. The acid leaching reactor according to claim 6, characterized in that, The stirring rod (3) is provided with multiple stirring structures at equal intervals. Each stirring structure includes two blades (31) fixedly arranged on the stirring rod (3) and the two blades (31) are arranged symmetrically. The length of the blades (31) of the multiple stirring structures increases from top to bottom.

8. The acid leaching reactor according to claim 1, characterized in that, The top of the vessel body (1) is fixedly provided with a first connecting plate (15), and the bottom of the vessel cover (2) is fixedly provided with a second connecting plate (21). The first connecting plate (15) and the second connecting plate (21) are provided with screw holes, and the screw holes on the first connecting plate (15) and the second connecting plate (21) are fixedly connected by nuts and bolts.

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