A cleaning and detoxification treatment device and treatment method for chromium slag

Abstract

The invention belongs to the field of chromium slag cleaning, and in particular to a cleaning and detoxification treatment device and a treatment method for chromium slag. In view of the problem that solid slag and chromium-containing supernatant need to be separated in the existing chromium slag cleaning treatment, the solid slag and the chromium-containing supernatant are easily remixed, resulting in a poor separation effect. The following scheme is now proposed, which includes an outer cylinder, an annular screen is fixedly connected to the interior of the outer cylinder, a stationary cylinder is fixedly connected to the interior of the annular screen, an annular plate is slidably connected to the inner wall of the outer cylinder, and two symmetrically arranged connecting rods are fixedly connected to the interior of the annular plate. In the present invention, a stirring blade is driven by a servo motor to stir the mixed liquid, and the sliding plate moves vertically upward under the elastic force of a compression spring. At this time, the mineralizer above the sliding plate is gradually added to the interior of the stationary cylinder. When the supernatant needs to be filtered, the inner cylinder can be lifted by a handle, and the mounting assembly can be installed with collection boxes of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of chromium slag cleaning, and in particular to a cleaning and detoxification treatment device and a treatment method for chromium slag. Background Art

[0002] Chromium slag refers to the waste slag containing hexavalent chromium produced in the chromium salt production and application industry. Hexavalent chromium is highly toxic and carcinogenic, and is listed as one of the eight chemical substances that are most harmful to humans.

[0003] After searching, the invention with announcement number CN106119545B discloses a method for cleaning and detoxifying chromium slag and extracting chromium, which belongs to the field of cleaning and recycling of chromium slag and resources. The specific steps of the method are: 1) adding water to the waste slag containing hexavalent chromium and mixing evenly; 2) adding hydrogen peroxide to the solution obtained in step 1), stirring thoroughly to obtain a mixed solution; 3) treating the mixed solution by hydrothermal method or direct heating; 4) after heating treatment, allowing the solid-liquid mixture to cool naturally to room temperature and stand; 5) separating the solid slag from the chromium-containing supernatant, and washing the filter residue with water and then drying; 6) recovering the chromium-containing solution and returning it to the process section, or recovering chromium. The mineralizer used in the present invention is green and pollution-free, and the treated supernatant can be directly reused in the process of chromium salt production or chromium salt use, and the filter residue can be comprehensively utilized. The method is clean and simple, with low investment, quick effect, and can recover hexavalent chromium, effectively controlling chromium pollution without causing secondary pollution.

[0004] In this type of chromium slag cleaning treatment, the solid slag needs to be separated from the chromium-containing supernatant. It is easy for the solid slag and the chromium-containing supernatant to remix, resulting in poor separation effect. Therefore, we propose a chromium slag cleaning and detoxification treatment equipment and treatment method to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the prior art, solid slag needs to be separated from chromium-containing supernatant during chromium slag cleaning treatment, and the solid slag and chromium-containing supernatant are easily remixed, resulting in poor separation effect. A cleaning and detoxification treatment equipment and treatment method for chromium slag are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A chromium slag cleaning and detoxification treatment device, comprising an outer cylinder, an annular screen is fixedly connected to the interior of the outer cylinder, a stationary cylinder is fixedly connected to the interior of the annular screen, an annular plate is slidably connected to the inner wall of the outer cylinder, two symmetrically arranged connecting rods are fixedly connected to the interior of the annular plate, an inner cylinder is fixedly connected between the two connecting rods, a sliding plate is slidably connected to the inner wall of the inner cylinder, a second fixed block is fixedly connected to the bottom of the sliding plate, and a fixing component for fixing the second fixed block is provided on one side of the inner cylinder;

[0008] A mixing assembly for mixing materials is provided at the bottom of the inner cylinder;

[0009] A collection box is arranged at the bottom of the outer cylinder, and three legs are fixedly connected to the outer wall of the outer cylinder, wherein a mounting assembly for mounting the collection box is arranged inside one of the legs.

[0010] In a possible design, the fixing assembly includes a toothed plate that slides through one side of the inner cylinder, a first rectangular hole is opened inside the second fixing block for use with the toothed plate, the bottom of the connecting rod is fixedly connected to the first fixing block, and a second tension spring is fixedly connected between one side of the first fixing block and one end of the toothed plate.

[0011] In a possible design, the fixing assembly also includes a second rectangular hole opened inside the connecting rod, an inclined plate is slidably penetrated inside the second rectangular hole, a rectangular plate is fixedly connected to one side of the top of the inclined plate, a first tension spring is fixedly connected between the bottom of the rectangular plate and the top of the connecting rod, and the inclined plate is used in conjunction with the tooth plate.

[0012] In one possible design, the mixing assembly includes a round rod fixedly connected to the bottom of the inner cylinder, the outer wall of the round rod is rotatably sleeved with a fixed cylinder, the outer wall of the fixed cylinder is fixedly sleeved with a plurality of stirring blades, the inner wall of the static cylinder is slidably connected with a conical bottom plate, the fixed cylinder rotates through the conical bottom plate and is fixedly sleeved with a second gear, the bottom of the conical bottom plate is fixedly connected to a servo motor, the output shaft of the servo motor is fixedly sleeved with a first gear, and the first gear is meshed with the second gear.

[0013] In a possible design, a vertical plate is fixedly connected to one side of the inclined plate, a push rod is fixedly connected to the outer wall of the fixed cylinder, and the push rod is used in conjunction with the vertical plate.

[0014] In a possible design, a handle is fixedly connected to the top of the inner cylinder, grooves are provided on both sides of the inner cylinder, sliders are fixedly connected to both sides of the sliding plate, the sliders are slidably connected to the grooves, and a compression spring is fixedly connected between the bottom of the sliding plate and the inner wall of the bottom of the inner cylinder.

[0015] In a possible design, the mounting assembly includes two sliding rods symmetrically arranged and sliding through the inside of the support leg. One end of the two sliding rods is fixedly connected to the same arc plate, and the arc plate is used in conjunction with the collection box. One end of the arc plate is rotatably connected to a screw rod, and the screw rod thread passes through the support leg and is fixedly connected to a circular plate.

[0016] A method for cleaning and detoxifying chromium slag, comprising the following steps:

[0017] S1. Put hexavalent chromium waste residue into a stationary cylinder, add water into the stationary cylinder, and mix well;

[0018] S2, the tooth plate gradually moves laterally away from the second fixed block, and the mineralizer above the sliding plate is gradually added to the interior of the static cylinder, and the mineralizer is added to the obtained solution, and it is fully stirred to obtain a mixed solution;

[0019] S3. The obtained solid-liquid mixture is naturally cooled to room temperature and left to stand. The inner cylinder is lifted by a handle, and the supernatant flows out through the gradually increasing gap between the annular plate and the annular screen and enters the interior of the collection box to complete the collection.

[0020] In the present application, when in use, hexavalent chromium waste residue is put into the interior of the static cylinder, water is added to the static cylinder, and mixed evenly; the servo motor is started, the output shaft of the servo motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the fixed cylinder to rotate, the fixed cylinder drives the stirring blade to rotate, and the stirring blade stirs the mixed liquid;

[0021] The fixed cylinder drives the push rod to rotate while rotating. Each rotation of the push rod drives the vertical plate to move vertically upward. At this time, the vertical plate drives the inclined plate to move vertically upward. The inclined plate drives the rectangular plate to move vertically upward and stretches the first tension spring. At this time, the inclined plate is not engaged with the tooth plate. The tooth plate moves laterally under the tension of the second tension spring. At this time, the tooth plate gradually moves laterally away from the second fixed block.

[0022] When the tooth plate moves out of the first rectangular hole, the second fixed block is no longer engaged with the tooth plate, and the sliding plate moves vertically upward under the elastic force of the compression spring. At this time, the mineralizer above the sliding plate is gradually added into the interior of the static cylinder, and the mineralizer is added to the obtained solution, and the solution is fully stirred to obtain a mixed solution; the mineralizer is hydrogen peroxide; the obtained solid-liquid mixture is naturally cooled to room temperature and allowed to stand;

[0023] When the supernatant needs to be filtered, the inner cylinder can be lifted up by the handle. At this time, the inner cylinder drives the connecting rod to move vertically upward, and the connecting rod drives the annular plate to move vertically upward. At the same time, the conical bottom plate is moved vertically upward through the round rod and the fixed cylinder. The conical bottom plate moves the chromium slag and the supernatant above upward, and the supernatant flows out through the gradually increasing gap between the annular plate and the annular screen and enters the interior of the collection box. After collection is completed, it is slowly lifted up to complete the solid-liquid separation;

[0024] When the sizes of the collection boxes are different, the circular plate can be rotated, the circular plate drives the screw to rotate, and the screw drives the arc plate to move horizontally. At this time, multiple sliding rods can ensure the stability of the movement of the arc plate, which can help stabilize the collection box and adapt to collection boxes of different sizes, which is easy to use.

[0025] In the present invention, the cleaning and detoxification treatment equipment and treatment method of chromium slag can achieve the effect of fixing the second fixing block through the fixing component;

[0026] In the present invention, the cleaning and detoxification treatment equipment and treatment method of chromium slag can achieve the effect of being able to install a collection box and adapt to collection boxes of different sizes by installing components;

[0027] In the present invention, the servo motor drives the stirring blade to stir the mixed liquid, and the sliding plate moves vertically upward under the elastic force of the compression spring. At this time, the mineralizer above the sliding plate is gradually added to the interior of the static cylinder. When the supernatant needs to be filtered, the inner cylinder can be lifted by the handle. The installation component can install collection boxes of different sizes, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional structural schematic diagram of a chromium slag cleaning and detoxification treatment device proposed by the present invention;

[0029] Figure 2 A schematic diagram of the three-dimensional structure of a chromium slag cleaning and detoxification treatment device proposed by the present invention from a second viewing angle;

[0030] Figure 3 This is a schematic diagram of the three-dimensional structure of an outer cylinder in a chromium slag cleaning and detoxification treatment device proposed by the present invention;

[0031] Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of an outer cylinder in a chromium slag cleaning and detoxification treatment device proposed by the present invention;

[0032] Figure 5 A schematic diagram of the three-dimensional structure of a stationary cylinder and an annular plate in a chromium slag cleaning and detoxification treatment device proposed by the present invention;

[0033] Figure 6A schematic diagram of the three-dimensional structure of an annular plate and a stirring blade in a chromium slag cleaning and detoxification treatment device proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of a three-dimensional cross-sectional structure of an inner cylinder in a chromium slag cleaning and detoxification treatment device proposed by the present invention;

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of a connecting rod in a chromium slag cleaning and detoxification treatment device proposed by the present invention.

[0036] In the figure: 1. outer cylinder; 2. support leg; 3. collecting box; 4. handle; 5. arc plate; 6. screw rod; 7. round plate; 8. sliding rod; 9. annular plate; 10. connecting rod; 11. inner cylinder; 12. stirring blade; 13. static cylinder; 14. annular screen; 15. servo motor; 16. first gear; 17. fixed cylinder; 18. second gear; 19. round rod; 20. push rod; 21. groove; 22. slider; 23. sliding plate; 24. compression spring; 25. vertical plate; 26. first fixed block; 27. second fixed block; 28. first rectangular hole; 29. ​​rectangular plate; 30. second rectangular hole; 31. first tension spring; 32. inclined plate; 33. tooth plate; 34. second tension spring; 35. conical bottom plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0038] Reference Figure 1-8A cleaning and detoxification treatment device comprises: an outer cylinder 1, an annular screen 14 is fixedly connected inside the outer cylinder 1, a stationary cylinder 13 is fixedly connected inside the annular screen 14, an annular plate 9 is slidably connected to the inner wall of the outer cylinder 1, two symmetrically arranged connecting rods 10 are fixedly connected inside the annular plate 9, an inner cylinder 11 is fixedly connected between the two connecting rods 10, a sliding plate 23 is slidably connected to the inner wall of the inner cylinder 11, a second fixed block 27 is fixedly connected to the bottom of the sliding plate 23, a fixing assembly for fixing the second fixed block 27 is provided on one side of the inner cylinder 11, and a fixing assembly for fixing the second fixed block 27 is fixedly connected to the inner wall of the inner cylinder 11. The assembly includes a toothed plate 33 that slides through one side of the inner tube 11, a first rectangular hole 28 that cooperates with the toothed plate 33 is opened inside the second fixed block 27, the bottom of the connecting rod 10 is fixedly connected to the first fixed block 26, and a second tension spring 34 is fixedly connected between one side of the first fixed block 26 and one end of the toothed plate 33. The fixing assembly also includes a second rectangular hole 30 opened inside the connecting rod 10, an inclined plate 32 slides through the inside of the second rectangular hole 30, and a rectangular plate 29 is fixedly connected to the top side of the inclined plate 32, and the bottom of the rectangular plate 29 is fixed to the connecting rod 10. The top is fixedly connected with the same first tension spring 31, the inclined plate 32 is used in conjunction with the tooth plate 33, one side of the inclined plate 32 is fixedly connected with the vertical plate 25, the outer wall of the fixed cylinder 17 is fixedly connected with the push rod 20, the push rod 20 is used in conjunction with the vertical plate 25, and the fixed cylinder 17 drives the push rod 20 to rotate while rotating, and each rotation of the push rod 20 drives the vertical plate 25 to move vertically upward, at this time the vertical plate 25 drives the inclined plate 32 to move vertically upward, the inclined plate 32 drives the rectangular plate 29 to move vertically upward and stretch the first tension spring 31, at this time the inclined plate 32 is not in contact with the tooth plate 3 3 are engaged, and the tooth plate 33 moves laterally under the tension of the second tension spring 34. At this time, the tooth plate 33 gradually moves laterally in the direction away from the second fixed block 27. When the tooth plate 33 moves out of the first rectangular hole 28, the second fixed block 27 is no longer engaged with the tooth plate 33. At this time, the sliding plate 23 moves vertically upward under the elastic force of the compression spring 24. At this time, the mineralizer above the sliding plate 23 is gradually added to the interior of the static cylinder 13, and the mineralizer is added to the obtained solution, and it is fully stirred to obtain a mixed solution; the mineralizer is hydrogen peroxide; the obtained solid-liquid mixture is naturally cooled to room temperature and left to stand;

[0039] A mixing assembly for mixing materials is provided at the bottom of the inner cylinder 11, and the mixing assembly includes a round rod 19 fixedly connected to the bottom of the inner cylinder 11, and the outer wall of the round rod 19 is rotatably sleeved with a fixed cylinder 17, and the outer wall of the fixed cylinder 17 is fixedly sleeved with a plurality of stirring blades 12, and the inner wall of the static cylinder 13 is slidably connected with a conical bottom plate 35, and the fixed cylinder 17 rotates through the conical bottom plate 35 and is fixedly sleeved with a second gear 18, and the bottom of the conical bottom plate 35 is fixedly connected with a servo motor 15, and the output shaft of the servo motor 15 is fixedly sleeved with a first gear 16, and the first gear 16 is meshed with the second gear 18, and the hexavalent chromium waste residue is put into the static cylinder 13, and water is added to the static cylinder 13 to mix evenly; start the servo motor 15, and the output shaft of the servo motor 15 drives the first gear 16 to rotate, and the first gear 16 drives the second gear 18 to rotate, and the second gear 18 drives the fixed cylinder 17 to rotate, and the fixed cylinder 17 drives the stirring blade 12 to rotate, and the stirring blade 12 stirs the mixed liquid;

[0040] A collecting box 3 is provided at the bottom of the outer cylinder 1, and three legs 2 are fixedly connected to the outer wall of the outer cylinder 1, and an installation assembly for installing the collecting box 3 is provided inside one of the legs 2, and the installation assembly includes two slide rods 8 symmetrically arranged by sliding through the legs 2, and one end of the two slide rods 8 is fixedly connected to the same arc plate 5, and the arc plate 5 is used in conjunction with the collecting box 3. One end of the arc plate 5 is rotatably connected to a screw rod 6, and the screw rod 6 threadedly penetrates the legs 2 and is fixedly connected to a circular plate 7. When the size of the collecting box 3 is different, the circular plate 7 can be rotated, and the circular plate 7 drives the screw rod 6 to rotate, and the screw rod 6 drives the arc plate 5 to move horizontally. At this time, multiple slide rods 8 can ensure the stability of the movement of the arc plate 5, which can help stabilize the collecting box 3, and then can adapt to collection boxes 3 of different sizes, which is easy to use.

[0041] A method for cleaning and detoxifying chromium slag, comprising the following steps:

[0042] S1, putting hexavalent chromium waste residue into the static cylinder 13, adding water into the static cylinder 13, and mixing evenly;

[0043] S2, the tooth plate 33 gradually moves laterally away from the second fixed block 27, and the mineralizer above the sliding plate 23 is gradually added into the interior of the static cylinder 13, and the mineralizer is added to the obtained solution, and it is fully stirred to obtain a mixed solution;

[0044] S3. The obtained solid-liquid mixture is naturally cooled to room temperature and left to stand. The inner cylinder 11 is lifted by the handle 4. The supernatant flows out through the gradually increasing gap between the annular plate 9 and the annular screen 14 and enters the interior of the collecting box 3 to complete the collection.

[0045] The present application can be used in the field of slag separation and cleaning, and can also be used in other fields applicable to the present application. Example

[0046] Reference Figure 1-8 , improved on the basis of Example 1: a chromium slag cleaning and detoxification treatment equipment, which is used in the field of chromium slag cleaning, a handle 4 is fixedly connected to the top of the inner cylinder 11, grooves 21 are opened on both sides of the inner cylinder 11, and sliders 22 are fixedly connected to both sides of the sliding plate 23, the sliders 22 are slidably connected to the grooves 21, and the bottom of the sliding plate 23 is fixedly connected to the inner wall of the bottom of the inner cylinder 11 with the same compression spring 24. When it is necessary to filter the supernatant, the handle 4 can be used to lift the inner cylinder 11. At this time, the inner cylinder 11 drives the connecting rod 10 to move vertically upward, and the connecting rod 10 drives the annular plate 9 to move vertically upward. At the same time, the conical bottom plate 35 is moved vertically upward through the round rod 19 and the fixed cylinder 17. The conical bottom plate 35 moves the chromium slag and supernatant above upward, and the supernatant flows out through the gradually increasing gap between the annular plate 9 and the annular screen 14, enters the interior of the collecting box 3, completes the collection, and is slowly lifted to complete the solid-liquid separation.

[0047] However, as is well known to those skilled in the art, the working principle and wiring method of the servo motor 15 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selection according to their needs or convenience.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chromium slag cleaning and detoxification treatment device, comprising an outer cylinder (1), characterized in that: An annular screen (14) is fixedly connected to the interior of the outer cylinder (1), a stationary cylinder (13) is fixedly connected to the interior of the annular screen (14), an annular plate (9) is slidably connected to the inner wall of the outer cylinder (1), two symmetrically arranged connecting rods (10) are fixedly connected to the interior of the annular plate (9), an inner cylinder (11) is fixedly connected between the two connecting rods (10), a handle (4) is fixedly connected to the top of the inner cylinder (11), a sliding plate (23) is slidably connected to the inner wall of the inner cylinder (11), a compression spring (24) is fixedly connected between the bottom of the sliding plate (23) and the inner wall of the bottom of the inner cylinder (11), a second fixing block (27) is fixedly connected to the bottom of the sliding plate (23), a fixing assembly for fixing the second fixing block (27) is provided on one side of the inner cylinder (11), the fixing assembly comprises a fixing block (27) which slides through the inner cylinder (11) a toothed plate (33) on one side, a first rectangular hole (28) for use with the toothed plate (33) is provided inside the second fixed block (27), the first fixed block (26) is fixedly connected to the bottom of the connecting rod (10), a second tension spring (34) is fixedly connected between one side of the first fixed block (26) and one end of the toothed plate (33), the fixing assembly further comprises a second rectangular hole (30) provided inside the connecting rod (10), an inclined plate (32) is slidably penetrated inside the second rectangular hole (30), a rectangular plate (29) is fixedly connected to one side of the top of the inclined plate (32), a first tension spring (31) is fixedly connected between the bottom of the rectangular plate (29) and the top of the connecting rod (10), the inclined plate (32) is used in conjunction with the toothed plate (33), and a vertical plate (25) is fixedly connected to one side of the inclined plate (32); A mixing assembly for mixing materials is provided at the bottom of the inner cylinder (11), the mixing assembly comprising a round rod (19) fixedly connected to the bottom of the inner cylinder (11), the outer wall of the round rod (19) being rotatably sleeved with a fixed cylinder (17), the outer wall of the fixed cylinder (17) being fixedly sleeved with a plurality of stirring blades (12), the inner wall of the static cylinder (13) being slidably connected with a conical bottom plate (35), the fixed cylinder (17) rotatably passes through the conical bottom plate (35) and is fixedly sleeved with a second gear (18), the bottom of the conical bottom plate (35) being fixedly connected with a servo motor (15), the output shaft of the servo motor (15) being fixedly sleeved with a first gear (16), the first gear (16) being meshed with the second gear (18), the outer wall of the fixed cylinder (17) being fixedly connected with a push rod (20), the push rod (20) being used in conjunction with the vertical plate (25); A collection box (3) is provided at the bottom of the outer cylinder (1), and three legs (2) are fixedly connected to the outer wall of the outer cylinder (1), wherein a mounting assembly for mounting the collection box (3) is provided inside one of the legs (2).

2. The chromium slag cleaning and detoxification treatment equipment according to claim 1, characterized in that: Grooves (21) are provided on both sides of the inner cylinder (11), and sliding blocks (22) are fixedly connected to both sides of the sliding plate (23), and the sliding blocks (22) are slidably connected to the grooves (21).

3. The cleaning and detoxification equipment for chromium slag according to claim 1 is characterized in that: The mounting assembly comprises two sliding rods (8) symmetrically arranged inside the supporting legs (2) and slidingly passing through them. One end of the two sliding rods (8) is fixedly connected to the same arc-shaped plate (5). The arc-shaped plate (5) is used in conjunction with the collection box (3). One end of the arc-shaped plate (5) is rotatably connected to a screw rod (6). The screw rod (6) is threadedly passed through the supporting legs (2) and fixedly connected to the circular plate (7).

4. The method for cleaning and detoxifying chromium slag according to any one of claims 1 to 3, characterized in that: The specific steps include: S1, putting hexavalent chromium waste residue into the interior of the static cylinder (13), adding water into the static cylinder (13), and mixing evenly; S2, the tooth plate (33) gradually moves laterally in a direction away from the second fixed block (27), and the mineralizer above the sliding plate (23) is gradually added to the interior of the static cylinder (13), and the mineralizer is added to the obtained solution, which is fully stirred to obtain a mixed solution; S3. The solid-liquid mixture is naturally cooled to room temperature and allowed to stand. The inner cylinder (11) is lifted by the handle (4). The supernatant flows out through the gradually increasing gap between the annular plate (9) and the annular screen (14) and enters the interior of the collection box (3), completing the collection.

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