Equipment for regenerating cryolite from electrolytic aluminum carbon residues

Abstract

The utility model discloses equipment for regenerating cryolite from electrolytic aluminum carbon residues, which relates to the technical field of electrolytic aluminum recovery and comprises a tank body, an overflow groove is connected onto the outer wall of the tank body, the bottom of the overflow groove is obliquely arranged, a rotating rod is arranged inside the tank body, a loop bar is arranged outside the rotating rod, and a plurality of grooves are formed in the loop bar. A cavity is formed between the rotating rod and the sleeve rod, a fixing frame is connected to the outer wall of the sleeve rod, a fixing column is fixedly connected to the outer wall of the fixing frame, and a hollow moving column is slidably connected to the interior of the fixing column. According to the equipment for regenerating cryolite from the electrolytic aluminum carbon residues, adhered objects on the inner wall can be scraped off by the inner wall scraping plate, and the adhered objects are scattered through eddy current generated during rotation of the rotating assembly, so that the adhered objects move upwards along with sprayed bubbles, the inner wall is cleaned, and the cryolite can be recycled. And in addition, the flotation can be scattered, so that the working efficiency during flotation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum recovery, and more specifically to a device for regenerating cryolite from electrolytic aluminum carbon slag. Background Art

[0002] A large amount of waste carbon slag is generated during the production of electrolytic aluminum. These waste carbon slags often contain a certain amount of cryolite (Na3AlF6). Cryolite is an important electrolyte in the electrolytic aluminum industry. Its effective recycling and reuse is of great significance for resource conservation and environmental protection. Harmless treatment of carbon slag can not only avoid environmental pollution, but also recover more than half of the electrolyte. It is an important cost-reduction and efficiency-increasing measure. In the process of producing cryolite from carbon slag, carbon slag needs to be flotated. However, the internal structure of the existing flotation machine is relatively simple, with low flotation recovery rate and poor efficiency. The internal material will adhere to the side wall and bottom of the tank, thereby reducing the working efficiency of the flotation machine.

[0003] A Chinese patent with application number 202120058754.8 discloses an aerated stirring mechanism for the production of regenerated cryolite, the structure of which includes a flotation box, a feed port being provided on one side of the flotation box, a flotation port being provided on one side of the upper surface of the flotation box, a bottom plate being fixedly installed at the lower part of the inside of the flotation box, and an inflation cavity being formed between the bottom plate and the inner bottom wall of the flotation box, a plurality of first air outlets connected to the inflation cavity being provided on the bottom plate, a rotatable rotating shaft being provided in the middle part of the flotation box, a relatively fixed hollow sleeve rod being sleeved on the outside of the rotating shaft, an air intake gap being left between the inner cavity of the hollow sleeve rod and the rotating shaft, and a plurality of second air outlets being provided on the hollow sleeve rod. The aerated stirring mechanism for the production of regenerated cryolite can clean up the materials adhering to the bottom of the tank by adding a scraper at the bottom of the stirring blade, thereby increasing the working efficiency during flotation. However, since the side walls have a larger surface area, more materials will adhere to the side walls. The device lacks a structure for cleaning the side walls. Moreover, the materials cleaned from the bottom wall will float up with the bubbles and will be adsorbed on the side walls, thereby causing a decrease in flotation efficiency.

[0004] Therefore, it is necessary to propose an electrolytic aluminum carbon slag regeneration cryolite equipment to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the utility model is to solve the problems raised in the above background technology and provide a cryolite regeneration device from electrolytic aluminum carbon slag.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0009] A cryolite regeneration device for electrolytic aluminum carbon slag, comprising a tank body, an overflow trough is connected to the outer wall of the tank body, the bottom of the overflow trough is inclined, a rotating rod is arranged inside the tank body, a sleeve rod is arranged outside the rotating rod, a cavity is arranged between the rotating rod and the sleeve rod, a fixed frame is connected to the outer wall of the sleeve rod, a fixed column is fixedly connected to the outer wall of the fixed frame, a hollow moving column is slidably connected inside the fixed column, one end of the moving column is fixedly connected to a vertical frame, and an inner wall scraper and a rotating component are connected to the vertical frame;

[0010] The interior of the vertical frame is connected to a hollow vertical rod, and a rotating bracket is arrayed on the outer wall of the vertical rod. The rotating assembly rotates on the rotating bracket. The rotating assembly includes a rotating plate and a guide plate fixed on the rotating plate. The bottom of the rotating plate is provided with a stirring vertical plate in an annular array. The guide plate is hollow inside and an air outlet is provided on each end. The rotating bracket and the vertical rod are provided with a connecting hole that penetrates to the inside of the guide plate.

[0011] The inner wall scraper is provided with an inclined platform and a guide groove, wherein the guide groove is located between two adjacent inclined platforms, the side of the guide groove in contact with the inner wall of the tank body is larger than the other end, and the top inclined surface of the guide groove points to the top of the rotating assembly;

[0012] One end of the movable column located inside the fixed column is connected to a telescopic tube, the other end of the telescopic tube is connected to the cavity, a spring is connected between one end of the movable column and the fixed frame, and the other end of the movable column is connected to the inside of the vertical rod.

[0013] Preferably, the bottom of the sleeve rod is connected to a bottom turntable, the four sides of the bottom turntable are connected to an arc plate, one side of the arc plate is connected to a bottom scraper, the inside of the arc plate is connected to the bottom turntable, and a jet port is opened on the top of the arc plate.

[0014] Preferably, a support beam is connected to the outer wall of the overflow trough, a bearing assembly is connected to the top of the support beam, an air intake pipe is fixedly connected to the top of the bearing assembly, the air intake pipe is connected to the cavity, and the bearing assembly is rotatably connected to the sleeve rod.

[0015] Preferably, the rotating rod is fixed in the sleeve rod through a support frame, and the top of the rotating rod is fixedly connected with a pulley.

[0016] Preferably, a discharge pipe is installed on the side wall of the overflow trough, and a feed pipe is installed on the side wall of the tank body.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. This device has a vertical frame on the outer wall of the sleeve rod. When the vertical frame rotates along the inner wall of the tank, the adhesion on the inner wall will be scraped off by the inner wall scraper, and the eddy current generated by the rotation of the rotating component will break up the adhesion, so that it moves upward with the ejected bubbles, cleans the inner wall, and can break it up, so as to improve the working efficiency during flotation.

[0019] 2. The device is provided with a spring with ductility between the fixed column and the movable column. The spring pushes the vertical frame to fit the inner wall of the tank body to enhance the scraping effect of the inner wall scraper on the adhesion, and can automatically adapt to the diameter of the inner wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the structure of the utility model;

[0022] Figure 3 It is a cross-sectional schematic diagram of the structure of the utility model;

[0023] Figure 4 It is a three-dimensional schematic diagram of the connection structure between the middle sleeve rod and the air intake pipe of the utility model;

[0024] Figure 5 It is an enlarged three-dimensional schematic diagram of the connection structure between the vertical frame and the inner wall scraper in the utility model;

[0025] Figure 6 It is a partial three-dimensional cross-sectional schematic diagram of the connection structure between the rotating assembly and the rotating bracket in the utility model;

[0026] Figure 7 It is a three-dimensional cross-sectional schematic diagram of the connection structure between the fixed column and the movable column in the utility model;

[0027] Figure 8 It is a three-dimensional schematic diagram of the connection structure between the bottom turntable and the arc plate in the utility model.

[0028] Reference numerals:

[0029] 101. Tank body; 102. Overflow trough; 103. Rotating rod; 104. Sleeve rod; 105. Cavity; 106. Fixed frame; 107. Fixed column; 108. Moving column; 109. Vertical frame; 110. Inner wall scraper; 111. Rotating assembly; 112. Vertical rod; 113. Rotating bracket; 114. Rotating plate; 115. Guide plate; 116. Vertical stirring plate; 117. Connecting hole; 118. Inclined platform; 119. Guide trough; 120. Telescopic tube; 121. Spring; 201. Bottom turntable; 202. Arc plate; 203. Bottom scraper; 204. Support beam; 205. Bearing assembly; 206. Inlet pipe; 207. Pulley. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-8 A cryolite regeneration device for electrolytic aluminum carbon slag includes a tank body 101, an overflow trough 102 is connected to the outer wall of the tank body 101, the overflow trough 102 is arranged outside the tank body 101 and is higher than the tank body 101, the bottom wall of the overflow trough 102 is inclined, and a discharge pipe is arranged on the outer wall at the lowest point for discharging the electrolyte after flotation, the bottom of the overflow trough 102 is inclined, a rotating rod 103 is arranged inside the tank body 101, a sleeve rod 104 is arranged outside the rotating rod 103, a cavity 105 is arranged between the rotating rod 103 and the sleeve rod 104, and the top of the cavity 105 is connected to the air intake pipe 206, The other end is connected with the interior of the bottom turntable 201, and the middle part is connected with the guide plate 115 through the telescopic tube 120, the moving column 108 and the vertical rod 112 in sequence. The outer wall of the sleeve rod 104 is connected with a fixed frame 106, and the outer wall of the fixed frame 106 is fixedly connected with a fixed column 107. The interior of the fixed column 107 is slidably connected with a hollow moving column 108. The moving column 108 is pushed by the spring 121 to extend from the fixed column 107, so as to be attached to the inner wall of the tank body 101. One end of the moving column 108 is fixedly connected with a vertical frame 109, and the vertical frame 109 is connected with an inner wall scraper 110 and a rotating assembly 111;

[0032] refer to Figures 3 to 6The interior of the vertical frame 109 is connected with a hollow vertical rod 112, and both ends of the vertical rod 112 are fixed on the vertical frame 109, and the interior is connected with the hollow moving column 108. The outer wall of the vertical rod 112 is arrayed with a rotating bracket 113, and the rotating bracket 113 is fixed on the vertical rod 112. The outer wall is provided with a connecting hole 117 that penetrates the interior of the vertical rod 112 and is used to transport the airflow in the vertical rod 112 to the guide plate 115. The rotating assembly 111 rotates on the rotating bracket 113. The rotating assembly 111 includes a rotating plate 114 and a rotating plate 114 fixed on the rotating plate 114. The guide plate 115 is provided with a pipe with an arc, and the airflow passing through the pipe is ejected from the other end, thereby driving the rotating component 111 to rotate. The bottom annular array of the rotating plate 114 has a stirring vertical plate 116. When the bottom rotating component 111 rotates, a rotating vortex is generated, and the vortex drives the stirring vertical plate 116 of the top rotating component 111 to rotate. The interior of the guide plate 115 is hollow, and each end is provided with an air outlet. The rotating bracket 113 and the vertical rod 112 are provided with a connecting hole 117 that penetrates to the interior of the guide plate 115;

[0033] refer to Figure 5 The inner wall scraper 110 is provided with an inclined platform 118 and a guide groove 119. The guide groove 119 is located between two adjacent inclined platforms 118. The inclined surface of the inclined platform 118 is inclined upward, so that the end of the guide groove 119 close to the inner wall is larger than the other end, and the smaller end is located at the top of the rotating assembly 111. The side of the guide groove 119 that contacts the inner wall of the tank body 101 is larger than the other end, and the top inclined surface of the guide groove 119 points to the top of the rotating assembly 111;

[0034] refer to Figure 3 and Figure 7 One end of the movable column 108 located in the fixed column 107 is connected to a telescopic tube 120, and the telescopic tube 120 enables the cavity 105 and the interior of the movable column 108 to be connected. At the same time, to adapt to the length of the movable column 108 when it is extended in the fixed column 107, the other end of the telescopic tube 120 is connected to the cavity 105, and a spring 121 is connected between one end of the movable column 108 and the fixed frame 106. The spring 121 pushes the movable column 108 to extend from the fixed column 107, and the other end of the movable column 108 is connected to the interior of the vertical rod 112.

[0035] Specifically, refer to Figure 4 and Figure 8The bottom of the sleeve rod 104 is connected to a bottom turntable 201, the interior of the bottom turntable 201 is connected to the cavity 105, the airflow in the cavity 105 is transported to each curved plate 202, and ejected through the air outlet holes on the curved plate 202, the bottom turntable 201 is connected to curved plates 202 on all sides, one side of the curved plate 202 is connected to a bottom scraper 203, the bottom scraper 203 and the curved plate 202 are both arranged with an arc, so that the attached objects can move to the top of the curved plate 202, the interior of the curved plate 202 is connected to the bottom turntable 201, and the top of the curved plate 202 is provided with an air jet.

[0036] Specifically, refer to Figure 2 and Figure 3 A support beam 204 is connected to the outer wall of the overflow trough 102, and the support beam 204 is used to support the bearing assembly 205. The bearing assembly 205 is connected to the top of the support beam 204. The bearing assembly 205 consists of a bearing seat and a bearing. The internal bearing sleeve is arranged at the top of the sleeve rod 104 to stabilize the rotation of the sleeve rod 104. The air intake pipe 206 is connected to the bearing seat. The top of the bearing assembly 205 is fixedly connected with the air intake pipe 206. The top of the air intake pipe 206 is provided with an air inlet for connecting to an external fan. The air intake pipe 206 is connected to the cavity 105, and the bearing assembly 205 is rotatably connected to the sleeve rod 104.

[0037] Specifically, refer to Figure 3 The rotating rod 103 is fixed in the sleeve rod 104 through a support frame. The rotating rod 103 and the sleeve rod 104 are coaxially arranged. The top of the rotating rod 103 is fixedly connected with a pulley 207.

[0038] Specifically, a discharge pipe is installed on the side wall of the overflow tank 102, and the discharge pipe is used to discharge the electrolyte after flotation. The feed pipe is used to inject the slurry raw material into the tank body 101. A circulation pipe is also provided on the outer wall of the tank body 101 for circulating the slurry. The feed pipe is installed on the side wall of the tank body 101.

[0039] In this embodiment, the pulley 207 at the top of the rotating rod 103 is connected to an external driving device, and the rotating rod 103 is driven to rotate by the pulley 207. When the rotating rod 103 rotates, it will drive the externally connected sleeve rod 104 to rotate together, and the slurry to be floated is injected into the tank body 101 through the feed pipe, and the required liquid medicine is added. The air intake pipe 206 is connected to an external air pump, and the external air is pumped into the cavity 105 through the air intake pipe 206, so that the slurry, air and medicine in the mixing area inside the tank body 101 are rapidly mixed. The air is dispersed into a large number of tiny bubbles under the action of sudden pressure drop and mechanical shearing. These bubbles are in close contact with the mineral particles in the slurry. The mineralized bubbles carry the mineral particles attached to them and float to the surface of the slurry to form a stable foam layer. In the foam layer, useful minerals are enriched, while most of the gangue minerals and minerals not acted by the reagent remain in the slurry. Then, the foam layer carrying the electrolyte overflows from the top of the tank body 101 and enters the overflow tank 102. The bottom of the overflow tank 102 is inclined toward the discharge pipe for the discharge of the electrolyte.

[0040] When the sleeve rod 104 rotates, the bottom drives the arc plate 202 to rotate through the bottom turntable 201. When the arc plate 202 rotates, the bottom scraper 203 will scrape off the adhesions attached to the bottom of the tank. The adhesions will move upward from the inclined surface of the bottom scraper 203 to the top of the arc plate 202. The top of the arc plate 202 is equipped with an air outlet. The air flow ejected from the air outlet will impact the adhesions and break them up, so that they move upward with a large number of bubbles to improve the flotation efficiency. The sleeve rod 104 drives the vertical frame 109 to rotate along the inner wall of the tank body 101 through the fixed column 107 and the movable column 108. When the vertical frame 109 rotates, the adhesions on the inner wall of the tank body 101 are scraped off through the inner wall scraper 110, thereby achieving the effect of cleaning the inner wall. The adhesions will be removed from the guide groove 119 between the two inclined platforms 118. The other end of the guide groove 119 will narrow upward, so that the adhesion will move to the top of the rotating component 111. The airflow in the cavity 105 passes through the telescopic tube 120 and the moving column 108 in sequence, and is connected with the inside of the vertical rod 112, so as to guide the airflow in the cavity 105 to the rotating component 111. The airflow in the vertical rod 112 enters the guide plate 115 through the connecting hole 117, and is discharged from the hole at the other end after passing through the arc-shaped pipe of the guide plate 115. The discharged airflow will push the rotating component 111 to rotate. When the rotating component 111 rotates, an upward rotating airflow will be generated. When the adhesion moves to the top of the rotating component 111, it will be driven by the rotating airflow to move upward, thereby improving the efficiency of flotation. The airflow generated when the rotating component 111 rotates will also accelerate the rotation of the top rotating component 111.

[0041] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A cryolite regeneration device for electrolytic aluminum carbon slag, comprising a tank body (101), an overflow trough (102) connected to the outer wall of the tank body (101), the bottom of the overflow trough (102) is inclined, and a rotating rod (103) is arranged inside the tank body (101), characterized in that: A sleeve rod (104) is arranged outside the rotating rod (103), a cavity (105) is arranged between the rotating rod (103) and the sleeve rod (104), a fixing frame (106) is connected to the outer wall of the sleeve rod (104), a fixing column (107) is fixedly connected to the outer wall of the fixing frame (106), a hollow moving column (108) is slidably connected inside the fixed column (107), one end of the moving column (108) is fixedly connected to a vertical frame (109), and an inner wall scraper (110) and a rotating assembly (111) are connected to the vertical frame (109); The interior of the vertical frame (109) is connected to a hollow vertical rod (112), and a rotating bracket (113) is arranged on the outer wall of the vertical rod (112). The rotating assembly (111) rotates on the rotating bracket (113). The rotating assembly (111) comprises a rotating plate (114) and a guide plate (115) fixed on the rotating plate (114). The bottom of the rotating plate (114) is provided with a stirring vertical plate (116) in an annular array. The interior of the guide plate (115) is hollow, and each end is provided with an air outlet. The rotating bracket (113) and the vertical rod (112) are provided with a connecting hole (117) penetrating to the interior of the guide plate (115); The inner wall scraper (110) is provided with an inclined platform (118) and a guide groove (119), wherein the guide groove (119) is located between two adjacent inclined platforms (118), the side of the guide groove (119) in contact with the inner wall of the tank body (101) is larger than the other end, and the top inclined surface of the guide groove (119) points to the top of the rotating assembly (111); One end of the movable column (108) located inside the fixed column (107) is connected to a telescopic tube (120), the other end of the telescopic tube (120) is connected to the cavity (105), a spring (121) is connected between one end of the movable column (108) and the fixed frame (106), and the other end of the movable column (108) is connected to the inside of the vertical rod (112).

2. The cryolite regeneration equipment of electrolytic aluminum carbon slag according to claim 1, characterized in that: The bottom of the sleeve rod (104) is connected to a bottom rotating disk (201), the four sides of the bottom rotating disk (201) are connected to an arc-shaped plate (202), one side of the arc-shaped plate (202) is connected to a bottom scraper (203), the interior of the arc-shaped plate (202) is connected to the bottom rotating disk (201), and a jet port is provided at the top of the arc-shaped plate (202).

3. The cryolite regeneration equipment from electrolytic aluminum carbon slag according to claim 1, characterized in that: A support beam (204) is connected to the outer wall of the overflow trough (102), a bearing assembly (205) is connected to the upper surface of the support beam (204), an air intake pipe (206) is fixedly connected to the top of the bearing assembly (205), the air intake pipe (206) is connected to the cavity (105), and the bearing assembly (205) is rotatably connected to the sleeve rod (104).

4. The cryolite regeneration equipment of electrolytic aluminum carbon slag according to claim 3 is characterized in that: The rotating rod (103) is fixed in the sleeve rod (104) via a support frame, and a pulley (207) is fixedly connected to the top of the rotating rod (103).

5. The cryolite regeneration equipment from electrolytic aluminum carbon slag according to claim 1, characterized in that: A discharge pipe is installed on the side wall of the overflow trough (102), and a feed pipe is installed on the side wall of the tank body (101).

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