A solid-liquid pretreatment mixing device for lithium sulfide recovery

Abstract

The present invention relates to the technical field of mixing devices, specifically a lithium sulfide recovery solid-liquid pretreatment mixing device, comprising a stirring kettle body, the top of which is connected to an end cover, a feed assembly and a water supply pipe, the feed assembly and the water supply pipe both penetrate into the interior of the end cover, and the feed ends of the feed assembly and the water supply pipe are at the top of the end cover; a distributor, the distributor is arranged inside the stirring kettle body, and the inside of the distributor is provided with a first distribution layer, a second distribution layer and a third distribution layer. The present invention improves the feed pipe of a traditional stirring kettle so that it can carry out proportional feeding under the control of an electromagnetic flow valve, and at the same time, during the feeding and distributing process, the initial wetting of the solid and liquid is achieved through a multi-layer distribution channel, and at the same time, the circumference is dispersed and dropped, so that the feeding process presents a three-layer distribution of the outside, the middle and the inside, thereby improving the uniformity of the feeding and further improving the convenience of the mixing.

Description

Technical Field

[0001] The invention relates to the technical field of mixing devices, in particular to a lithium sulfide recovery solid-liquid pretreatment mixing device. Background Art

[0002] The recovery of lithium sulfide can be achieved by using lithium sulfide waste to prepare industrial-grade lithium carbonate. This method first oxidizes and mixes lithium sulfide waste with hydrogen peroxide solution or sodium hypochlorite solution, and then undergoes subsequent precipitation, filtration, washing and drying to finally obtain industrial-grade lithium carbonate. The mixing efficiency of lithium sulfide waste and hydrogen peroxide solution or sodium hypochlorite solution in the early stage directly affects the efficiency of subsequent work, so the mixing of the two is crucial.

[0003] Traditional mixing devices mostly use a mixing kettle to achieve mixing and stirring of the two, especially when mixing lithium sulfide waste and sodium hypochlorite solution. Since the ratio of the two is similar, when adding materials, whether adding solids to liquids for synchronous stirring or adding liquids to solids for synchronous stirring, it is impossible to achieve solid-liquid mixing efficiently and quickly, which in turn affects subsequent work steps and greatly reduces the efficiency of its recovery process. Therefore, it is urgent to design a lithium sulfide recovery solid-liquid pretreatment mixing device to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a lithium sulfide recovery solid-liquid pretreatment mixing device to solve the problem proposed in the above background technology that no matter whether solid is added to liquid for synchronous stirring or liquid is added to solid for synchronous stirring, solid-liquid mixing cannot be achieved efficiently and quickly, thereby affecting subsequent work steps and greatly reducing the efficiency of its recovery process.

[0005] To achieve the above object, the present invention provides the following technical solution: a lithium sulfide recovery solid-liquid pretreatment mixing device, comprising:

[0006] A stirring kettle body, wherein the top of the stirring kettle body is connected to an end cover, and the top of the end cover is connected to a servo motor, and the output end of the servo motor is connected to a stirring shaft;

[0007] A feed assembly and a water supply pipe, wherein both the feed assembly and the water supply pipe penetrate into the interior of the end cover, and the feed ends of the feed assembly and the water supply pipe are located at the top of the end cover;

[0008] A distributor, wherein the distributor is arranged inside the stirring tank body, and the interior of the distributor is provided with a first distribution layer, a second distribution layer and a third distribution layer, and the distribution ends of the feeding assembly correspond to the interiors of the first distribution layer, the second distribution layer and the third distribution layer respectively, for conical uniform distribution, and the spray ends of the water supply pipe correspond to the tops of the first distribution layer, the second distribution layer and the third distribution layer respectively, for spraying and humidifying the materials therein.

[0009] Preferably, the outer wall of the stirring kettle body is fixedly connected with a positioning ear, the top of the stirring kettle body is sealed with the end cover through a flange, the bottom of the stirring kettle body is provided with a discharge valve pipe, and the bottom end of the stirring kettle body is conically inclined, and the outside of the stirring shaft is fixedly connected with a mixing blade.

[0010] Preferably, the feeding assembly includes a first feeding pipe, a second feeding pipe and a third feeding pipe, and the tops of the first feeding pipe, the second feeding pipe and the third feeding pipe are commonly connected to a solid feeding pipe, and electromagnetic flow valves are provided at the feeding ends of the solid feeding pipe and the water supply pipe, the lowest points of the first feeding pipe, the second feeding pipe and the third feeding pipe are distributed in a stepped manner, the bottoms of the first feeding pipe, the second feeding pipe and the third feeding pipe are all connected to a distribution pipe, and the third feeding pipe and the second feeding pipe respectively pass through the upper distribution pipe.

[0011] Preferably, the third feed pipe is placed inside the third cloth layer, the second feed pipe is placed inside the second cloth layer, the first feed pipe is placed inside the first cloth layer, the diameter of the first cloth layer is greater than the diameter of the second cloth layer, the diameter of the second cloth layer is greater than the diameter of the third cloth layer, and the first cloth layer, the second cloth layer and the third cloth layer are all distributed in a conical structure, and the preliminary mixed material passes through the first cloth layer, the second cloth layer and the third cloth layer in three inner, middle and outer circular rings to add materials downward.

[0012] Preferably, one end of the water supply pipe above the end cover is the liquid supply end, and the other end of the water supply pipe is respectively connected to the first diverter pipe and the second diverter pipe, the first guide pipe is evenly distributed at the bottom of the first diverter pipe, the second guide pipe and the third guide pipe are evenly distributed below the second diverter pipe, and the water supply pipe, the first diverter pipe, the second diverter pipe, the first guide pipe, the second guide pipe and the third guide pipe are all through structures.

[0013] Preferably, the interior of the distributor is further provided with a first cavity, a second cavity, a third cavity and a fourth cavity, the interior of the fourth cavity is evenly distributed with a second diversion pipe, the interior of the third cavity is evenly distributed with a third guide pipe, the interior of the second cavity is evenly distributed with a second guide pipe, the interior of the first cavity is evenly distributed with a first guide pipe, and below the first guide pipe, the second guide pipe and the third guide pipe are all annularly distributed with spray heads through liquid distribution pipes.

[0014] Preferably, there are three groups of spray heads in total, and the spray ends of the spray heads penetrate into the interior of the first cloth layer, the second cloth layer and the third cloth layer. The upper ends of the inner walls of the first cloth layer, the second cloth layer and the third cloth layer are fixedly connected with a group of baffles, and the other end of each group of baffles is fixedly connected with a limiting pressure net, and the baffles are used to block falling materials, and the limiting pressure net is used to limit the falling materials, and the limiting pressure net is a metal wire mesh structure.

[0015] Preferably, the second diversion pipe includes an upper circular pipe and a lower vertical pipe, and the vertical pipes are evenly distributed inside the fourth cavity, and the outside of each vertical pipe is connected to a second guide pipe and a third guide pipe, the second diversion pipe vertical pipe passes through the top of the distributor, and the end of the first guide pipe that passes through the first diversion pipe also passes through the top of the distributor, a positioning flange ring is provided on the edge of the outer wall of the distributor, and a support ring is provided on the inner wall of the mixing kettle body corresponding to the positioning flange ring, a stirring shaft passes through the center of the distributor, and the outer wall of the stirring shaft is rotatably connected to the distributor through a ball bearing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The lithium sulfide recovery solid-liquid pretreatment mixing device improves the feed pipe of the traditional stirring kettle so that it can discharge materials in equal proportions under the control of the electromagnetic flow valve. At the same time, during the feeding and distributing process, the multi-layer distribution channel is used to achieve the initial wetting of the solid and liquid. At the same time, the circumferential dispersion and falling make the feeding process present an outer, middle and inner three-layer distribution, thereby improving the uniformity of the feeding and the convenience of the mixing, shortening the stirring time by half, improving the overall working efficiency of the device, and ensuring that all lithium sulfide waste can contact and react with the sodium hypochlorite solution to improve its reaction efficiency.

[0018] 2. The lithium sulfide recovery solid-liquid pretreatment mixing device is provided with a conical distributor, so that the material is gradually dispersed in the process of gradually falling, thereby improving the efficiency of its contact with the liquid, and the shell between each layer of the cloth layer is provided with a cavity structure, and the internal cone is provided with a liquid distribution pipe and a spray head, and the spray head is distributed in a cone above the cloth layer, so that while the material is discharged into the cloth layer, it is sprayed for pre-wetting, and the material is discharged in three circular rings, so that the material distribution is more uniform and the subsequent stirring time is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0021] Figure 3It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the blanking direction structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the planar structure of the distributor of the present invention when viewed from above;

[0024] Figure 6 It is a partial cross-sectional structural schematic diagram of the distributor of the present invention;

[0025] Figure 7 It is a schematic diagram of the distribution structure of the liquid dispensing tubes of the present invention;

[0026] Figure 8 It is a schematic diagram of the overall structure of the feeding assembly of the present invention.

[0027] In the figure: 1. stirring kettle body; 11. positioning ear; 12. end cover; 13. servo motor; 14. stirring shaft; 15. discharge valve pipe; 16. support ring; 2. feeding assembly; 21. first feeding pipe; 22. second feeding pipe; 23. third feeding pipe; 24. distribution pipe; 3. water supply pipe; 31. first diverter pipe; 32. second diverter pipe; 33. first guide pipe; 34. second guide pipe; 35. third guide pipe; 36. liquid distribution pipe; 37. spray head; 4. distributor; 41. first distribution layer; 42. second distribution layer; 43. third distribution layer; 44. first cavity; 45. second cavity; 46. third cavity; 47. fourth cavity; 5. baffle; 51. limit pressure net. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-8 , an embodiment provided by the present invention:

[0030] A lithium sulfide recovery solid-liquid pretreatment mixing device, comprising:

[0031] A stirring kettle body 1, the top of the stirring kettle body 1 is connected with an end cover 12, and the top of the end cover 12 is connected with a servo motor 13, the output end of the servo motor 13 is connected with a stirring shaft 14, and the stirring shaft 14 is driven to rotate by starting the servo motor 13, so that the added mixed material can be fully stirred and mixed;

[0032] The feed assembly 2 and the water supply pipe 3 are both passed through the interior of the end cover 12, and the feed ends of the feed assembly 2 and the water supply pipe 3 are located at the top of the end cover 12. The settings of the feed assembly 2 and the water supply pipe 3 respectively realize the addition of solid feed;

[0033] The distributor 4 is arranged inside the stirring tank body 1, and the inside of the distributor 4 is provided with a first distribution layer 41, a second distribution layer 42 and a third distribution layer 43, and the distribution ends of the feeding component 2 correspond to the inside of the first distribution layer 41, the second distribution layer 42 and the third distribution layer 43 respectively, for conical uniform distribution, and the spraying ends of the water supply pipe 3 correspond to the top of the first distribution layer 41, the second distribution layer 42 and the third distribution layer 43 respectively, for spraying and humidifying the materials therein. Through the setting of this structure, through the setting of the three-layer distribution space, in cooperation with the water supply pipe 3 and other components, it is wetted to ensure that all solids can contact and react with the liquid.

[0034] Furthermore, a positioning ear 11 is fixedly connected to the outer wall of the stirring kettle body 1, the top of the stirring kettle body 1 is sealed with the end cover 12 through a flange, a discharge valve tube 15 is provided at the bottom of the stirring kettle body 1, and the bottom end of the inside of the stirring kettle body 1 is conically inclined, and a mixing blade is fixedly connected to the outside of the stirring shaft 14. Mixing blades of different structures can be selected according to different needs to achieve stirring and mixing of materials.

[0035] Furthermore, the feeding assembly 2 includes a first feeding pipe 21, a second feeding pipe 22 and a third feeding pipe 23, and the tops of the first feeding pipe 21, the second feeding pipe 22 and the third feeding pipe 23 are commonly connected to a solid feeding pipe, and electromagnetic flow valves are provided at the feeding ends of the solid feeding pipe and the water supply pipe 3. Through the setting of the electromagnetic flow valve, the ratio of solid-liquid transportation can be controlled to further improve the accuracy of mixed addition. The lowest points of the first feeding pipe 21, the second feeding pipe 22 and the third feeding pipe 23 are distributed in a stepped manner, and the bottoms of the first feeding pipe 21, the second feeding pipe 22 and the third feeding pipe 23 are all connected to a distribution pipe 24, and the third feeding pipe 23 and the second feeding pipe 22 respectively pass through the upper distribution pipe 24. Through the setting of this structure, the distribution space of different layers can be evenly loaded.

[0036] Furthermore, the third feed pipe 23 is placed inside the third cloth layer 43, the second feed pipe 22 is placed inside the second cloth layer 42, the first feed pipe 21 is placed inside the first cloth layer 41, the diameter of the first cloth layer 41 is greater than the diameter of the second cloth layer 42, the diameter of the second cloth layer 42 is greater than the diameter of the third cloth layer 43, and the first cloth layer 41, the second cloth layer 42 and the third cloth layer 43 are all distributed in a conical structure, and the preliminary mixed material is added downward in three circular rings through the first cloth layer 41, the second cloth layer 42 and the third cloth layer 43. The three-layer structure of the inside, the middle and the outside is set to avoid the accumulation of added materials in one place, thereby improving the convenience of mixing and stirring.

[0037] Furthermore, one end of the water supply pipe 3 above the end cover 12 is a liquid supply end, and the other end of the water supply pipe 3 is respectively connected to a first diversion pipe 31 and a second diversion pipe 32, a first guide pipe 33 is evenly distributed at the bottom of the first diversion pipe 31, a second guide pipe 34 and a third guide pipe 35 are evenly distributed below the second diversion pipe 32, and the water supply pipe 3, the first diversion pipe 31, the second diversion pipe 32, the first guide pipe 33, the second guide pipe 34 and the third guide pipe 35 are all through structures, and are also through with the liquid distribution pipe 36, so that the water supply pipe 3 transports liquid to the spray head 37 for spraying, ensuring sufficient diversion of the liquid, thereby ensuring that the materials in different spaces are wetted and treated to achieve their full reaction and mixing.

[0038] Furthermore, the interior of the distributor 4 is provided with a first cavity 44, a second cavity 45, a third cavity 46 and a fourth cavity 47. The interior of the fourth cavity 47 is evenly distributed with the second diverter pipe 32, the interior of the third cavity 46 is evenly distributed with the third guide pipe 35, the interior of the second cavity 45 is evenly distributed with the second guide pipe 34, the interior of the first cavity 44 is evenly distributed with the first guide pipe 33, and below the first guide pipe 33, the second guide pipe 34 and the third guide pipe 35 are all annularly distributed with spray heads 37 through the liquid distribution pipe 36.

[0039] Furthermore, three groups of spray heads 37 are provided, and the spray ends of the spray heads 37 penetrate into the first cloth layer 41, the second cloth layer 42 and the third cloth layer 43. The upper ends of the inner walls of the first cloth layer 41, the second cloth layer 42 and the third cloth layer 43 are fixedly connected with a group of baffles 5, and the other end of each group of baffles 5 is fixedly connected with a limiting pressure net 51, and the baffles 5 are used to block the falling materials, and the limiting pressure net 51 is used to limit the falling materials. The limiting pressure net 51 is a metal wire mesh structure. Through the setting of the baffles 5, too much material is prevented from being discharged at one time, thereby effectively blocking and limiting the material, thereby improving the uniformity of the spray head 37 spraying it.

[0040] Furthermore, the second diversion pipe 32 includes an upper circular pipe and a lower vertical pipe, and the vertical pipes are evenly distributed inside the fourth cavity 47, and the outside of each vertical pipe is connected to a second guide pipe 34 and a third guide pipe 35. The second diversion pipe 32 vertical pipe passes through the top of the distributor 4, and the end of the first guide pipe 33 that passes through the first diversion pipe 31 also passes through the top of the distributor 4. A positioning flange ring is provided on the edge of the outer wall of the distributor 4, and a support ring 16 is provided on the inner wall of the mixing tank body 1 corresponding to the positioning flange ring to ensure the convenience of installation of the distributor 4. A stirring shaft 14 passes through the center of the distributor 4, and the outer wall of the stirring shaft 14 is rotatably connected to the distributor 4 through a ball bearing.

[0041] Working principle: The stirring tank body 1 and the servo motor 13 used in the present application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be repeated here. When the present invention is used, the device is first installed, and the first feeding pipe 21, the second feeding pipe 22, the second diversion pipe 32 and the feeding end of the water supply pipe 3 are further connected to the corresponding feeding pipes to realize the electromagnetic flow control supply of the material. The first feeding pipe 21, the second feeding pipe 22 and the third feeding pipe 23 add the solid material to the first feeding pipe through the feeding pipe 24. The inside of the first cloth layer 41, the second cloth layer 42 and the third cloth layer 43 fall downward evenly through their conical structures, and in the process of the material falling, the water supply pipe 3 supplies liquid, which is diverted through the first shunt pipe 31, the second shunt pipe 32, the first guide pipe 33, the second guide pipe 34, the third guide pipe 35 and the liquid distribution pipe 36, and sprayed through the spray head 37 to achieve preliminary wet mixing and reaction of the materials inside the first cloth layer 41, the second cloth layer 42 and the third cloth layer 43, thereby ensuring that all solids can fully contact with the liquid, thereby improving the efficiency of the reaction and the uniformity of the mixing.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A lithium sulfide recovery solid-liquid pretreatment mixing device, characterized in that: include: A stirring kettle body (1), wherein the top of the stirring kettle body (1) is connected to an end cover (12), and the top of the end cover (12) is connected to a servo motor (13), and the output end of the servo motor (13) is connected to a stirring shaft (14); A material supply assembly (2) and a water supply pipe (3), wherein the material supply assembly (2) and the water supply pipe (3) both penetrate into the interior of the end cover (12), and the feed ends of the material supply assembly (2) and the water supply pipe (3) are located at the top of the end cover (12); A distributor (4), the distributor (4) being arranged inside the stirring kettle body (1), and the distributor (4) being provided with a first distribution layer (41), a second distribution layer (42) and a third distribution layer (43), and the distribution ends of the feeding assembly (2) respectively correspond to the inside of the first distribution layer (41), the second distribution layer (42) and the third distribution layer (43) for conical uniform distribution, and the spray ends of the water supply pipe (3) respectively correspond to the top of the first distribution layer (41), the second distribution layer (42) and the third distribution layer (43) for spraying and humidifying the materials therein; The distributor (4) is further provided with a first cavity (44), a second cavity (45), a third cavity (46) and a fourth cavity (47); the second flow distribution pipe (32) is evenly distributed inside the fourth cavity (47); the third flow guide pipe (35) is evenly distributed inside the third cavity (46); the second flow guide pipe (34) is evenly distributed inside the second cavity (45); the first flow guide pipe (33) is evenly distributed inside the first cavity (44); Spray heads (37) are distributed in an annular manner below the first flow guide tube (33), the second flow guide tube (34) and the third flow guide tube (35) through a liquid distribution tube (36). A total of three groups of the spray heads (37) are provided. The spray ends of the spray heads (37) penetrate into the interior of the first cloth layer (41), the second cloth layer (42) and the third cloth layer (43). The upper ends of the inner walls of the first cloth layer (41), the second cloth layer (42) and the third cloth layer (43) are fixedly connected to a group of baffles. (5), the other end of each group of the baffles (5) is fixedly connected to a limiting pressure net (51), and the baffles (5) are used to block falling materials, and the limiting pressure net (51) is used to limit the falling materials, and the limiting pressure net (51) is a metal wire mesh structure, and the second diversion pipe (32) includes an upper circular pipe and a lower vertical pipe, and the vertical pipes are evenly distributed inside the fourth cavity (47), and the outside of each vertical pipe is connected to a second guide pipe (34) and a third guide pipe (35), and the first The vertical pipe of the second branch pipe (32) penetrates to the top of the distributor (4), and the end of the first flow guide pipe (33) that is connected to the first branch pipe (31) also penetrates to the top of the distributor (4). A positioning flange ring is provided at the edge of the outer wall of the distributor (4), and a support ring (16) is provided on the inner wall of the stirring kettle body (1) corresponding to the positioning flange ring. A stirring shaft (14) penetrates the center of the distributor (4), and the outer wall of the stirring shaft (14) is rotatably connected to the distributor (4) via a ball bearing.

2. A lithium sulfide recovery solid-liquid pretreatment mixing device according to claim 1, characterized in that: The outer wall of the stirring kettle body (1) is fixedly connected with a positioning lug (11); the top of the stirring kettle body (1) is sealedly connected to the end cover (12) via a flange; a discharge valve pipe (15) is provided at the bottom of the stirring kettle body (1); the bottom end of the stirring kettle body (1) is tapered and inclined; and a mixing blade is fixedly connected to the outside of the stirring shaft (14).

3. A lithium sulfide recovery solid-liquid pretreatment mixing device according to claim 1, characterized in that: The feed assembly (2) comprises a first feed pipe (21), a second feed pipe (22) and a third feed pipe (23), and the tops of the first feed pipe (21), the second feed pipe (22) and the third feed pipe (23) are connected to a solid feed pipe, and electromagnetic flow valves are provided at the feed ends of the solid feed pipe and the water supply pipe (3), the lowest points of the first feed pipe (21), the second feed pipe (22) and the third feed pipe (23) are distributed in a stepped manner, the bottoms of the first feed pipe (21), the second feed pipe (22) and the third feed pipe (23) are connected to a distribution pipe (24), and the third feed pipe (23) and the second feed pipe (22) respectively penetrate the upper distribution pipe (24).

4. A lithium sulfide recovery solid-liquid pretreatment mixing device according to claim 3, characterized in that: The third feed pipe (23) is placed inside the third cloth layer (43), the second feed pipe (22) is placed inside the second cloth layer (42), the first feed pipe (21) is placed inside the first cloth layer (41), the diameter of the first cloth layer (41) is greater than the diameter of the second cloth layer (42), the diameter of the second cloth layer (42) is greater than the diameter of the third cloth layer (43), and the first cloth layer (41), the second cloth layer (42) and the third cloth layer (43) are all distributed in a conical structure, and the preliminary mixed material passes through the first cloth layer (41), the second cloth layer (42) and the third cloth layer (43) to form three inner, middle and outer rings for material addition downward.

5. A lithium sulfide recovery solid-liquid pretreatment mixing device according to claim 1, characterized in that: One end of the water supply pipe (3) located above the end cover (12) is a liquid supply end, and the other end of the water supply pipe (3) is respectively connected to a first flow diversion pipe (31) and a second flow diversion pipe (32); a first flow guide pipe (33) is evenly distributed at the bottom of the first flow diversion pipe (31); a second flow guide pipe (34) and a third flow guide pipe (35) are evenly distributed below the second flow diversion pipe (32); and the water supply pipe (3), the first flow diversion pipe (31), the second flow diversion pipe (32), the first flow guide pipe (33), the second flow guide pipe (34) and the third flow guide pipe (35) are all in a through structure.

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