Carbide slag activated slurry solid-liquid separation device

Abstract

The invention relates to solid-liquid separation, and provides a carbide slag activated slurry solid-liquid separation device which comprises a frame body with an upper opening and a lower opening, a plurality of first filter boxes, a plurality of second filter boxes, a first grouting device, a first gas filling device, a second grouting device, a second gas filling device, a third grouting device and a fourth gas filling device, the second grouting device and the second gas filling device are connected with the second filter box, and the first driving device is used for driving the first filter box and the second filter box to rotate; the plurality of first filter boxes and the plurality of second filter boxes are located at the same height, and a liquid discharge gap is formed between the adjacent first filter box and second filter box. The carbide slag activated slurry solid-liquid separation device disclosed by the invention can be used for efficiently carrying out solid-liquid separation on carbide slag slurry.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, and in particular to a carbide slag activated slurry solid-liquid separation device. Background Art

[0002] Carbide slag is the waste residue with calcium hydroxide as the main component after acetylene gas is obtained by hydrolysis of calcium carbide. After the carbide slag is activated by an activator, the carbide slag can be used instead of lime to dissolve alumina in aluminum preparation.

[0003] Red mud is an industrial solid waste discharged when the aluminum industry extracts alumina. When red mud is used for secondary use, dealkalization of red mud (i.e., removing the strong alkalinity of red mud) is an extremely important step and basis. Red mud can usually be mixed with lime to dealkalize red mud, but carbide slag can replace lime to dealkalize red mud to a certain extent. After the red mud dealkalization process, carbide slag itself is also activated, so it can be used in the aluminum preparation process.

[0004] After carbide slag and red mud are mixed into slurry, the slurry needs to be separated into solid and liquid, and the liquid phase of the output contains red mud after dealkalization, and the solid phase contains carbide slag. However, since carbide slag has been fully ground, its particle size is relatively low. When performing solid-liquid separation, in addition to the static method (long time consuming), there is also a filtering method (low time consuming), wherein due to the low particle size of carbide slag, it is easy to be blocked, so that the filter assembly needs to be frequently cleaned during the separation process. Therefore, it is necessary to design a more efficient solid-liquid separation device. Summary of the invention

[0005] The object of the present invention is to provide a carbide slag activated slurry solid-liquid separation device, which can efficiently perform solid-liquid separation on carbide slag slurry.

[0006] An embodiment of the present invention is achieved through the following technical scheme: the solid-liquid separation device of the activated slurry of calcium carbide slag of the present invention includes a frame with openings on the upper and lower sides, a plurality of first filter boxes and second filter boxes alternately arranged in the frame, a first grouting device and a first aeration device connected to the first filter box, a second grouting device and a second aeration device connected to the second filter box, and a first driving device for driving the first filter box and the second filter box to rotate; the plurality of the first filter boxes and the plurality of the second filter boxes are all located at the same height, and a drainage gap is provided between adjacent first filter boxes and second filter boxes.

[0007] Furthermore, the first driving device includes a support ring sleeved on the outer wall of the frame, support rods arranged on the sides of the first filter box and the second filter box, a pair of support plates respectively connected to the two sides of the support ring, a pair of motors, and a pillar for supporting the motor; multiple support rods are connected to the support ring, and the output shaft of the motor is fixedly connected to the support plate.

[0008] Furthermore, a pair of the support rings is provided, and both of the pair of support rings are connected to the support plate.

[0009] Furthermore, a plurality of partitions are provided on the lower side of the frame, and both sides of the first filter box and the second filter box are slidably connected to the partitions.

[0010] Furthermore, it also includes a second driving device for driving the frame to rise and fall.

[0011] Furthermore, the second driving device includes a long strip through hole opened on the support plate, a pair of pull rods respectively arranged on both sides of the frame, a sleeve rotatably connected to the pull rod, a pull rope connected to the sleeve, and a hoist connected to the pull rope; the pull rod is arranged to pass through the through hole.

[0012] Furthermore, a clearance groove is provided on the upper side of the frame body in the vertical direction, and the clearance groove is used for the support rod to pass through.

[0013] Furthermore, two opposite inner side walls of the frame are provided with partition bars; the partition bars are provided between the adjacent first filter box and the second filter box.

[0014] Furthermore, the first grouting device includes a first pump body and a first grouting pipe for connecting the first pump body and the first filter box; the second grouting device includes a second pump body and a second grouting pipe for connecting the second pump body and the second filter box; the first aeration device includes a first air compressor and a first air duct for connecting the first air compressor and the first filter box; the second aeration device includes a second air compressor and a second air duct for connecting the second air compressor and the second filter box.

[0015] The technical scheme of the embodiment of the present invention has at least the following advantages and beneficial effects: the solid-liquid separation device of the calcium carbide slag activated slurry of the present invention, when in use, the slurry to be separated is respectively sent into a plurality of first filter boxes by the first grouting device, and the slurry is sent into a plurality of second filter boxes by the second grouting device. During filtering, high-pressure air is continuously injected into the first filter box by the first air-injecting device, and the slurry in the first filter box is subjected to pressure filtration, and the liquid in the first filter box is discharged through the liquid discharge gap (the second filter box is the same). In the early stage of filtering, the first filter box and the second filter box perform filtering operation simultaneously. In the later stage of filtering, since the first filter box and the second filter box will produce a certain degree of blockage, the two filter boxes are alternately operated for several cycles, specifically, when the first filter box is filtering, the second filter box is not injected with slurry and is not pressurized, so that when the liquid passes through the first filter box, it will impact the two sides of the second filter box, and then the second filter box is backwashed to flush out the impurities blocked in the filter holes of the second filter box. Then the second filter box starts to filter, and the first filter box is not injected with slurry and is not pressurized, and the first filter box is backwashed. In this way, by flushing back and forth several times, the first filter box and the second filter box can be backwashed well, which can effectively ensure the best filtering efficiency without stopping the first filter box and the second filter box for cleaning. After a batch of filtration is completed, the first drive device drives the first filter box and the second filter box to flip and discharge the solid particles accumulated therein. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a solid-liquid separation device for carbide slag activated slurry provided in an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the internal structure of a solid-liquid separation device for carbide slag activated slurry provided in an embodiment of the present invention;

[0019] Figure 3 A structural schematic diagram of a frame body provided by an embodiment of the present invention from one perspective;

[0020] Figure 4 A schematic diagram of the structure of a frame from two viewing angles provided by an embodiment of the present invention;

[0021] Figure 5 A schematic structural diagram of the first filter box portion provided in an embodiment of the present invention.

[0022] Icons: 11-frame, 12-gap, 13-drainage gap, 14-partition, 15-dividing bar, 16-pull rod, 17-sleeve, 18-pull rope, 21-first filter box, 22-first grouting pipe, 23-first air guide pipe, 24-second filter box, 25-support rod, 26-support ring, 27-support plate, 28-motor, 29-pillar, 210-through hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example

[0029] The following is further described in conjunction with specific embodiments. Figure 1 -Attached Figure 5 As shown, the solid-liquid separation device for activated slurry of carbide slag comprises a frame 11 with openings at the top and bottom, a plurality of first filter boxes 21 and second filter boxes 24 alternately arranged in the frame 11, a first grouting device and a first gas-filling device connected to the first filter box 21, a second grouting device and a second gas-filling device connected to the second filter box 24, and a first driving device for driving the first filter box 21 and the second filter box 24 to rotate; the plurality of first filter boxes 21 and the plurality of second filter boxes 24 are all located at the same height, and a drainage gap 13 is provided between adjacent first filter boxes 21 and second filter boxes 24. Specifically, when in use, the slurry to be separated is respectively fed into the plurality of first filter boxes 21 through the first grouting device, and the slurry is fed into the plurality of second filter boxes 24 through the second grouting device. During filtering, high-pressure air is continuously injected into the first filter box 21 through the first gas-filling device, and the slurry in the first filter box 21 is subjected to pressure filtration, and the liquid in the first filter box 21 is discharged through the drainage gap 13 (the same applies to the second filter box 24). In the early stage of filtration, the first filter box 21 and the second filter box 24 perform filtering operations at the same time. In the later stage of filtration, since the first filter box 21 and the second filter box 24 will be blocked to a certain extent, the two are operated alternately for several cycles. Specifically, when the first filter box 21 is filtering, no slurry is injected into the second filter box 24 and no pressurization is applied. In this way, when the liquid passes through the first filter box 21, it will impact the two sides of the second filter box 24, and then the second filter box 24 is backwashed to flush out the impurities blocked in the filter holes of the second filter box 24. Then the second filter box 24 starts to filter, and the first filter box 21 is not injected with slurry or pressurized, and the first filter box 21 is backwashed. In this way, by flushing each other back and forth several times, the first filter box 21 and the second filter box 24 can be backwashed well, which can effectively ensure the best filtering efficiency without stopping the first filter box 21 and the second filter box 24 for cleaning. After a batch of filtration is completed, the first filter box 21 and the second filter box 24 are driven to flip through the first driving device to discharge the solid particles accumulated therein (it should be noted that since the solid content in the slurry is not high, it is usually filtered multiple times, and the solids are discharged after a certain amount of solids have accumulated in the first filter box 21 and the second filter box 24). When discharging, you only need to open the lids of the first filter box 21 and the second filter box 24, and then pour out the solids.

[0030] The first driving device in this embodiment includes a support ring 26 sleeved on the outer wall of the frame 11, a support rod 25 provided on the side of the first filter box 21 and the second filter box 24, a pair of support plates 27 respectively connected to the two sides of the support ring 26, a pair of motors 28, and a support column 29 for supporting the motor 28; a plurality of support rods 25 are connected to the support ring 26, and the output shaft of the motor 28 is fixedly connected to the support plate 27. A pair of support rings 26 are provided, and a pair of support rings 26 are connected to the support plate 27. Specifically, through a pair of support rings 26 and a plurality of support rods 25, a plurality of first filter boxes 21 and a plurality of second filter boxes 24 can be well supported, and by the motor 28 driving the support plate 27 to rotate, the first filter box 21, the second filter box 24 and the frame 11 as a whole can be turned over to facilitate the removal of solids therein.

[0031] In this embodiment, a plurality of partitions 14 are provided at the lower side of the interior of the frame 11, and both sides of the first filter box 21 and the second filter box 24 are slidably connected to the partitions 14. A second driving device for driving the frame 11 to rise and fall is also included. The second driving device includes a long through hole 210 provided on the support plate 27, a pair of pull rods 16 respectively provided on both sides of the frame 11, a sleeve 17 rotatably connected to the pull rod 16, a pull rope 18 connected to the sleeve 17, and a hoist connected to the pull rope 18; the pull rod 16 is provided through the through hole 210. Specifically, since the slurry needs to be poured into the first filter box 21 and the second filter box 24 for filtering multiple times, solid particles will continuously accumulate at the bottom of the first filter box 21 and the second filter box 24. Therefore, during filtering, each time the filtering is completed, the frame 11 can be pulled up a certain distance by a hoist through the pull rope 18, the sleeve 17 and the pull rod 16, which is equivalent to pulling the partition 14 upward so that the partition 14 covers the solid particles at the bottom of the first filter box 21 and the second filter box 24. This can reduce the squeezing force of the solid particles at the bottom of the first filter box 21 and the second filter box 24 on the side walls of the first filter box 21 and the second filter box 24, and can prevent them from entering the filter hole. The hoist can also be replaced by a simple electric hoist or other equipment that can provide vertical pulling force.

[0032] In this embodiment, a clearance groove 12 is formed on the upper side of the frame 11 along the vertical direction, and the clearance groove 12 is used for the support rod 25 to pass through.

[0033] In this embodiment, two opposite inner side walls of the frame body 11 are both provided with a partition bar 15 ; the partition bar 15 is provided between the adjacent first filter box 21 and the second filter box 24 .

[0034] The first grouting device in this embodiment includes a first pump body and a first grouting pipe 22 for connecting the first pump body and the first filter box 21; the second grouting device includes a second pump body and a second grouting pipe for connecting the second pump body and the second filter box 24; the first gas filling device includes a first air compressor and a first air duct 23 for connecting the first air compressor and the first filter box 21; the second gas filling device includes a second air compressor and a second air duct for connecting the second air compressor and the second filter box 24. Specifically, during most of the filtering time, the first filter box 21 and the second filter box 24 are filtering synchronously, and only during the middle time of filtering (that is, when the first filter box 21 and the second filter box 24 need to be backwashed), the first filter box 21 and the second filter box 24 will perform filtering operations alternately, so it is necessary to design independently operated first grouting pipes 22 and second grouting pipes, and independently operated first air compressors and second air compressors.

[0035] In summary, the solid-liquid separation device for activated slurry of carbide slag of the present embodiment, when in use, the slurry to be separated is respectively sent into a plurality of first filter boxes 21 by the first grouting device, and the slurry is sent into a plurality of second filter boxes 24 by the second grouting device. During filtering, high-pressure air is continuously injected into the first filter box 21 by the first aerator, and the slurry in the first filter box 21 is subjected to pressure filtration, and the liquid in the first filter box 21 is discharged through the drainage gap 13 (the second filter box 24 is the same). In the early stage of filtering, the first filter box 21 and the second filter box 24 perform filtering operation simultaneously, and in the later stage of filtering, since the first filter box 21 and the second filter box 24 will produce a certain degree of blockage, the two are alternately operated for several cycles, specifically, the first filter box 21 is not injected into the second filter box 24 during filtering, and is not pressurized, so that when the liquid passes through the first filter box 21, it will impact the two sides of the second filter box 24, and then the second filter box 24 is backwashed, and the impurities blocked in the filter holes of the second filter box 24 are flushed out. Then the second filter box 24 starts filtering, and the first filter box 21 is not injected with slurry, and is not pressurized, and the first filter box 21 is backwashed. In this way, by flushing back and forth several times, the first filter box 21 and the second filter box 24 can be well backwashed, which can effectively ensure the best filtering efficiency and does not need to stop the first filter box 21 and the second filter box 24 for cleaning. After a batch of filtration is completed, the first drive device drives the first filter box 21 and the second filter box 24 to flip, and the solid particles accumulated therein can be discharged.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A carbide slag activated slurry solid-liquid separation device, characterized in that: The invention comprises a frame (11) with openings at the top and the bottom, a plurality of first filter boxes (21) and second filter boxes (24) arranged alternately in the frame (11), a first grouting device and a first gas supplying device connected to the first filter box (21), a second grouting device and a second gas supplying device connected to the second filter box (24), and a first driving device for driving the first filter box (21) and the second filter box (24) to rotate; The plurality of first filter boxes (21) and the plurality of second filter boxes (24) are located at the same height, and drainage gaps (13) are provided between adjacent first filter boxes (21) and second filter boxes (24).

2. The solid-liquid separation device for carbide slag activated slurry according to claim 1, characterized in that: The first driving device comprises a support ring (26) sleeved on the outer wall of the frame (11), a support rod (25) arranged on the sides of the first filter box (21) and the second filter box (24), a pair of support plates (27) respectively connected to the two sides of the support ring (26), a pair of motors (28), and a support column (29) for supporting the motors (28); The plurality of support rods (25) are all connected to the support ring (26), and the output shaft of the motor (28) is fixedly connected to the support plate (27).

3. The solid-liquid separation device for carbide slag activated slurry according to claim 2, characterized in that: A pair of the support rings (26) is provided, and both of the pair of support rings (26) are connected to the support plate (27).

4. The solid-liquid separation device for carbide slag activated slurry according to claim 2, characterized in that: A plurality of partitions (14) are provided on the lower inner side of the frame (11), and both sides of the first filter box (21) and the second filter box (24) are slidably connected to the partitions (14).

5. The solid-liquid separation device for carbide slag activated slurry according to claim 4, characterized in that: It also includes a second driving device for driving the frame (11) to rise and fall.

6. The solid-liquid separation device for carbide slag activated slurry according to claim 5, characterized in that: The second driving device comprises a long strip through hole (210) opened on the support plate (27), a pair of pull rods (16) respectively arranged on both sides of the frame (11), a sleeve (17) rotatably connected to the pull rod (16), a pull rope (18) connected to the sleeve (17), and a hoist connected to the pull rope (18); The pull rod (16) is arranged through the through hole (210).

7. The solid-liquid separation device for carbide slag activated slurry according to claim 6, characterized in that: A clearance groove (12) is provided on the upper side of the frame (11) in the vertical direction, and the clearance groove (12) is used for the support rod (25) to pass through.

8. The solid-liquid separation device for carbide slag activated slurry according to claim 1, characterized in that: Two opposite inner side walls of the frame (11) are each provided with a partition bar (15); the partition bar (15) is arranged between the adjacent first filter box (21) and the second filter box (24).

9. The solid-liquid separation device for carbide slag activated slurry according to claim 1, characterized in that: The first grouting device comprises a first pump body and a first grouting pipe (22) for connecting the first pump body and the first filter box (21); the second grouting device comprises a second pump body and a second grouting pipe for connecting the second pump body and the second filter box (24); The first air filling device comprises a first air compressor and a first air duct (23) for connecting the first air compressor and the first filter box (21); the second air filling device comprises a second air compressor and a second air duct for connecting the second air compressor and the second filter box (24).

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