CN213253139U - Settling tank for aluminum oxide production - Google Patents
Settling tank for aluminum oxide production Download PDFInfo
- Publication number
- CN213253139U CN213253139U CN202020652338.6U CN202020652338U CN213253139U CN 213253139 U CN213253139 U CN 213253139U CN 202020652338 U CN202020652338 U CN 202020652338U CN 213253139 U CN213253139 U CN 213253139U
- Authority
- CN
- China
- Prior art keywords
- pipe
- tank
- stirring
- settling
- feeding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model discloses a subsider is used in aluminium oxide production, include: the bottom of the tank body is of a conical structure; the supporting device is arranged on the groove body; the lower part of the stirring shaft is provided with a stirring rake which is attached along the inclined plane at the bottom of the tank body; a stirring mechanism; the feeding mechanism comprises a feeding pipe and a sedimentation agent pipe, wherein a plurality of discharging pipes are arranged on the feeding pipe, the inner diameter of a feeding port and a discharging port of each discharging pipe is larger than that of a pipe body in the middle of the feeding pipe, a plurality of sedimentation agent discharging pipes are arranged on the sedimentation agent pipe, and the plurality of sedimentation agent discharging pipes are arranged in one-to-one correspondence with the discharging pipes of the feeding pipe and communicated with the middle upper part of the discharging pipes; the swash plate is arranged along the inner wall of the groove body in a downward inclined mode; and the mud blocking plate comprises a plate body and a filter layer, wherein the plate body is provided with a plurality of water permeable holes, and the filter layer is positioned on the lower surface of the plate body. The utility model discloses a settling tank has improved the settlement efficiency of red mud thick liquid.
Description
Technical Field
The utility model relates to the technical field of alumina production, in particular to a settling tank for alumina production.
Background
Red mud is a waste produced in the process of refining alumina from bauxite and is named as red and red mud. With the continuous development of the aluminum industry, about 6000 million tons of red mud are produced all over the world at present, and the red mud emission amount of China is more than 450 million tons each year. Most alumina plants in the world pile up or dump red mud into the deep sea.
In the production process of alumina, the red mud slurry after dissolution and dilution mainly consists of a sodium chlorate solution and red mud, and the sodium chlorate solution and the red mud must be separated to obtain a pure sodium chlorate solution meeting the decomposition requirement of seed crystals. The separated red mud is washed, and Na lost in the red mud in the form of the attached liquid is reduced as much as possible2O and Al2O3. At present, the alumina factory usually adopts a washing and settling tank to carry out 4-7 times of reverse settling washing, which needs a continuous settling tank to carry out continuous settling. However, since the natural settling time is long, the small-particle suspended matters in the wastewater are not easy to settle, and under the condition of not using a settling agent, the primary settling time is often required to be several days, so that an enterprise cannot carry out continuous production on a large scale, the discharged wastewater cannot completely reach the national discharge standard, and the settling effect is poor. Therefore, when the red mud is treated in a settling tank, a settling agent is usually added to accelerate the settling of small-particle suspended matters in the red mud. In order to quickly discharge thick slurry settled at the bottom of settling tank, continuous process is usedOften, a stirring device is arranged in the settling tank. However, in order to sufficiently mix the settling agent with the red mud slurry when the settling agent is added, it is generally necessary to provide stirring blades on the stirring shaft of the settling tank, and the stirring blades stir the slurry while rotating the rake teeth. However, the mineral slurry is greatly disturbed in the stirring process, circulation is easily formed in the continuous settling tank, the sedimentation is not facilitated, and the sedimentation efficiency of the continuous settling tank is low.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an aluminium oxide is subsided groove for production to overcome and subside agent and red mud thick liquid mix inhomogeneous and the stirring is unfavorable for subsiding the shortcoming that influences the efficiency of subsiding.
In order to achieve the above object, the utility model provides a subsider is used in aluminium oxide production, include: the red mud slurry tank comprises a tank body, a water inlet, a water outlet and a water outlet, wherein the tank body is used for containing red mud slurry, the red mud slurry in the tank body is divided into a settling area and a clear liquid area, the bottom of the tank body is of a conical structure and is provided with the water outlet, the top of the tank body is provided with an overflow groove in a surrounding manner, and the overflow groove is provided with the; the supporting device is arranged on the groove body; one end of the stirring shaft is connected with the driving device, the other end of the stirring shaft can be rotatably arranged at the bottom of the tank body, a stirring rake is arranged at the lower part of the stirring shaft, and the stirring rake is attached to and arranged along the inclined plane at the bottom of the tank body; the stirring mechanism comprises a stirring rod and stirring blades, one end of the stirring rod is arranged on the stirring shaft, the other end of the stirring rod is arranged on the stirring rake, and a plurality of stirring blades are arranged on the stirring rod; the feeding mechanism is arranged at the middle upper part of the settling area of the tank body and comprises a feeding pipe and a settling agent pipe, the feeding pipe is provided with a plurality of discharging pipes, the inner diameter of a feeding port and a discharging port of each discharging pipe is larger than that of a pipe body in the middle of the feeding pipe, the settling agent pipe is provided with a plurality of settling agent discharging pipes, and the plurality of settling agent discharging pipes are arranged in one-to-one correspondence with the discharging pipes of the feeding pipe and are communicated with the middle upper part of the discharging pipes; the swash plate is obliquely arranged along the inner wall of the tank body downwards and is positioned between the stirring mechanism and the feeding mechanism; and the mud blocking plate is arranged in the groove body and is positioned above the feeding mechanism, the mud blocking plate comprises a plate body and a filter layer, a plurality of water permeable holes are formed in the plate body, and the filter layer is positioned on the lower surface of the plate body.
Preferably, in the above technical scheme, the settling tank further comprises a support frame, one end of the support frame is fixedly connected with the stirring shaft, and the other end of the support frame is fixedly connected with the stirring rake.
Preferably, in the above technical scheme, the discharging pipe includes upper pipe body, well body and lower body, the internal diameter of upper pipe body and lower body is greater than the internal diameter of well body, connect through annular inclined plane between upper pipe body, well body and the lower body.
Preferably, among the above-mentioned technical scheme, the discharging pipe is including the first body and the second body that are the loudspeaker form, the one end that first body internal diameter is little is connected with the one end that the second body internal diameter is little.
Preferably, in the above technical scheme, the first pipe body and the second pipe body are of an integrally formed structure.
Preferably, in the above technical scheme, the swash plate is a plurality of blocks which are uniformly distributed along the inner wall of the tank body.
Preferably, in the above technical scheme, the face of the wave breaker is towards the vertical direction, and the plate body is the downward sloping setting.
Preferably, among the above-mentioned technical scheme, the swash plate encircles and locates the inner wall of cell body forms the annular plate body, the face of swash plate is up, and the plate body is the downward sloping setting.
Preferably, in the above technical scheme, the filter layer is filter cloth.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses a subsider is used in aluminium oxide production, feed mechanism include the inlet pipe and subside the agent pipe, are equipped with a plurality of discharging pipes on the inlet pipe, and every discharging pipe corresponds and the well upper portion intercommunication of subsides the agent discharging pipe. The sedimentation agent enters the discharge pipe through the sedimentation agent discharge pipe and is mixed with the red mud slurry in the discharge pipe, and the slurry after mixing flows into the pipe body with larger inner diameter after passing through the pipe body with smaller inner diameter from the pipe body with larger inner diameter because the inner diameters of the feed inlet and the discharge outlet of the discharge pipe are larger than the inner diameter of the pipe body in the middle of the feed pipe. When the limited flow of the slurry passes through the reduced flow cross section, the flow velocity of the fluid is increased, the increase of the flow velocity is accompanied with the reduction of the pressure of the fluid, and low pressure is generated near the fluid flowing at high speed, so that the adsorption effect is generated. So that the settling agent and the red mud slurry are fully mixed to accelerate the settling of the red mud slurry.
(2) A plurality of red mud slurry discharging pipes are arranged in a settling area of the tank body, the slurry is sprayed out from the discharging holes at a high flow speed, and the slurry sprayed out at a high speed plays a role in stirring the slurry in the settling area. And the slurry is sprayed downwards to stir the slurry, so that the stirring influence on the liquid in the clear liquid area is small, and the sedimentation efficiency can be improved.
(3) When the stirring shaft in the settling tank stirs, the stirring blade stirs the slurry in the tank body, so that the settling agent is fully contacted with the red mud slurry, and the swash plate arranged on the inner wall of the tank body can prevent the circulation from being formed in the stirring process and reduce the settling efficiency.
(4) A mud blocking plate is arranged above the feeding mechanism, and can filter larger particles to enter a clear liquid area.
Drawings
FIG. 1 is a schematic structural view of a settling tank for alumina production according to the present invention;
FIG. 2 is a schematic structural view of a feeding structure in a settling tank for alumina production according to the present invention;
fig. 3 is a schematic structural view of a feed pipe of a feeding mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a feeding pipe in a feeding mechanism according to another embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 4, according to the utility model discloses a subsider is used in aluminium oxide production of embodiment mode, including cell body 1, cell body 1 top is equipped with strutting arrangement 2, be equipped with drive arrangement 3 on the strutting arrangement 2, drive arrangement 3 is connected with (mixing) shaft 4, the rotatable bottom of locating cell body 1 of the lower extreme of (mixing) shaft 4, be equipped with rabble 5 on the (mixing) shaft 4, rabble 5 sets up with the bottom surface laminating of cell body 1, be equipped with rabble mechanism 6 on the (mixing) shaft 4, upper portion in the subsidence area of cell body 1 is laid to feed mechanism 7, wave breaker 8 is located on the inner wall of cell body 1, be located between rabble mechanism 6 and the feed mechanism 7, hinder mud board 9 and locate in cell body 1, be located feed. The specific steps are as follows:
the tank body 1 is used for containing red mud slurry needing precipitation treatment, the slurry in the tank body 1 is divided into a settling zone I and a clear liquid zone II, namely the red mud slurry is subjected to precipitation treatment by the tank body 1, solid particle precipitates are precipitated downwards to form a settling zone, and the upper layer is a clear liquid zone. The bottom of the tank body 1 is in a conical structure, a discharge hole is arranged in the middle of the ground of the tank body, a thick slurry pipe 11 is connected to the discharge hole, and thick slurry is discharged through the thick slurry pipe. The top of the tank body 1 is provided with an overflow trough 12 in a surrounding way, and the overflow trough 12 is provided with a water outlet 13. The water in the upper clear liquid area of the tank body is discharged into the overflow tank 12 and is discharged through the water outlet 13. The supporting device 2 is arranged above the tank body 1, and the corridor is arranged on the supporting device 2, so that the maintenance of equipment and the like by operators is facilitated. The supporting device 2 is provided with a driving device 3, and the driving device 3 is a motor. One end of the stirring shaft 4 is connected with the driving device 3, and the other end is rotatably arranged at the bottom of the tank body 1. The lower part of the stirring shaft 4 is provided with a stirring rake 5, and the stirring rake 5 is arranged along the inclined plane at the bottom of the tank body 1 in a fitting manner. The driving device 3 drives the stirring shaft 4 to rotate, the rotation of the stirring shaft 4 drives the stirring rake 5 to rotate on the inclined plane of the tank body 1, so that the sediment deposited on the bottom surface of the tank body 1 is pushed to the discharge hole of the tank body and is discharged out of the tank body 1 through the thick slurry pipe 11. Preferably, the number of the rabbles 5 is two or more. The stirring shaft is provided with a plurality of stirring rakes 5 which can push the sediment at the bottom of the tank body 1 out of the tank body, thereby improving the working efficiency. The stirring shaft 4 is provided with a stirring mechanism 6, the stirring mechanism 6 comprises a stirring rod 61 and stirring blades 62, one end of the stirring rod 61 is arranged on the stirring shaft 4, the other end of the stirring rod 61 is arranged on the stirring rake 5, and the stirring rod 61 is provided with a plurality of stirring blades 62. Through the stirring of the stirring mechanism 6, the settling agent and the red mud slurry are mixed more uniformly.
The middle upper part of the settlement zone of the tank body 1 is provided with a feeding mechanism 7, the feeding mechanism 7 comprises a plurality of feeding pipes 71 and settlement agent pipes 72, and the feeding pipes 71 are arranged in parallel. Each feeding pipe 71 is provided with a plurality of discharging pipes 73, and the inner diameters of the feeding holes and the discharging holes of the discharging pipes 73 are larger than the inner diameter of the pipe body in the middle of the feeding pipe. The settling agent pipe 72 is provided in a plurality of parallel and perpendicular to the feeding pipe 71 to form a net-shaped feeding mechanism. Each settling agent pipe 72 is provided with a plurality of settling agent discharging pipes 74, and the settling agent discharging pipes 74 and the discharging pipes 73 are arranged in a one-to-one correspondence manner and are communicated with the middle upper parts of the discharging pipes. The feeding mechanism 7 is distributed on the sedimentation layer of the tank body in a net shape, when the red mud slurry is discharged, the slurry is sprayed out from the discharge hole to be at a high flow speed, and the slurry sprayed out at a high speed plays a role in stirring the slurry in the sedimentation area. And the slurry is sprayed downwards to stir the slurry, so that the stirring influence on the liquid in the clear liquid area is small, and the sedimentation efficiency can be improved.
When the settling agent is used for treatment, the settling agent is mixed with water and dissolved outside the tank body, and then the mixture is input into the tank body 1 through the settling agent pipe 72 to be mixed with the red mud slurry, so that the solid particle precipitation in the red mud slurry is accelerated. The sedimentation agent discharge pipe 74 is communicated with the middle upper part of the red mud slurry discharge pipe 73, and the sedimentation agent and the red mud slurry are mixed at the middle upper part of the discharge pipe 73. Because the inner diameters of the feed inlet and the discharge outlet of the discharge pipe 73 are larger than the inner diameter of the pipe body in the middle of the feed pipe, the mixed slurry flows into the pipe body with larger inner diameter after passing through the pipe body with smaller inner diameter from the pipe body with larger inner diameter. When the limited flow of the slurry passes through the reduced flow cross section, the flow velocity of the fluid is increased, the increase of the flow velocity is accompanied with the reduction of the pressure of the fluid, and low pressure is generated near the fluid flowing at high speed, so that the adsorption effect is generated. So that the settling agent and the red mud slurry are fully mixed to accelerate the settling of the red mud slurry.
A swash plate 8 which inclines downwards is arranged along the inner wall of the tank body 1, and the swash plate 8 is positioned between the stirring mechanism 6 and the feeding mechanism 7. When the stirring shaft in the settling tank stirs, the stirring blade stirs the slurry in the tank body, so that the settling agent is fully contacted with the red mud slurry, and the swash plate 8 arranged on the inner wall of the tank body can prevent the circulation from being formed in the stirring process, thereby improving the settling efficiency. A mud blocking plate 9 is arranged in the tank body 1 and is positioned above the feeding mechanism 6. The mud guard 9 includes a plate body 91 and a filter layer 92. A plurality of water permeable holes 93 are formed in the plate body 91, and a filter layer 92, which is preferably filter cloth, is formed on the lower surface of the plate body 91. The mud blocking plate 9 is arranged to further filter the mud, small particles or floccules in the red mud are filtered, and the red mud liquid in the settling zone enters the clear liquid zone after being filtered by the mud blocking plate.
Preferably, the discharging pipe 73 includes an upper pipe body 731, a middle pipe body 732 and a lower pipe body 733, the inner diameters of the upper pipe body 731 and the lower pipe body 732 are larger than the inner diameter of the middle pipe body 732, and the upper pipe body 731, the middle pipe body 732 and the lower pipe body 733 are connected by an annular slope. Preferably, the upper pipe body, the middle pipe body and the lower pipe body of the discharge pipe are of an integrally formed structure, and installation is facilitated. The pipe bodies are connected through the annular inclined plane, so that slurry flows more smoothly.
In another embodiment of the tapping pipe 73, the tapping pipe 73 comprises a first pipe 734 and a second pipe 735 in the form of a trumpet, the end of the first pipe 734 having a smaller inner diameter being connected to the end of the second pipe 735 having a smaller inner diameter. Preferably, the first pipe body and the second pipe body are of an integrally formed structure; or the first pipe body and the second pipe body are connected through a flange. The trumpet-shaped pipe body is used to ensure that the slurry flows more smoothly.
Preferably, the wave-preventing plates 8 are a plurality of blocks and are uniformly distributed along the inner wall of the tank body 1. The face of the wave breaker 8 faces the vertical direction, and the plate body is arranged in a downward inclination mode.
Regarding another embodiment of the wave breaker 8, the wave breaker 8 surrounds the inner wall of the tank body 1 and forms an annular board body, the surface of the wave breaker faces upwards, and the board body is arranged in a downward inclination manner.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (9)
1. The utility model provides an aluminium oxide production is with settling tank which characterized in that includes:
the red mud slurry tank comprises a tank body, a water inlet, a water outlet and a water outlet, wherein the tank body is used for containing red mud slurry, the red mud slurry in the tank body is divided into a settling area and a clear liquid area, the bottom of the tank body is of a conical structure and is provided with the water outlet, the top of the tank body is provided with an overflow groove in a surrounding manner, and the overflow groove is provided with the;
the supporting device is arranged on the groove body;
one end of the stirring shaft is connected with the driving device, the other end of the stirring shaft can be rotatably arranged at the bottom of the tank body, a stirring rake is arranged at the lower part of the stirring shaft, and the stirring rake is attached to and arranged along the inclined plane at the bottom of the tank body;
the stirring mechanism comprises a stirring rod and stirring blades, one end of the stirring rod is arranged on the stirring shaft, the other end of the stirring rod is arranged on the stirring rake, and a plurality of stirring blades are arranged on the stirring rod;
the feeding mechanism is arranged at the middle upper part of the settling area of the tank body and comprises a feeding pipe and a settling agent pipe, the feeding pipe is provided with a plurality of discharging pipes, the inner diameter of a feeding port and a discharging port of each discharging pipe is larger than that of a pipe body in the middle of the feeding pipe, the settling agent pipe is provided with a plurality of settling agent discharging pipes, and the plurality of settling agent discharging pipes are arranged in one-to-one correspondence with the discharging pipes of the feeding pipe and are communicated with the middle upper part of the discharging pipes;
the swash plate is obliquely arranged along the inner wall of the tank body downwards and is positioned between the stirring mechanism and the feeding mechanism; and
the mud blocking plate is arranged in the groove body and located above the feeding mechanism, the mud blocking plate comprises a plate body and a filter layer, a plurality of water permeable holes are formed in the plate body, and the filter layer is located on the lower surface of the plate body.
2. The settling tank for aluminum oxide production according to claim 1, further comprising a support frame, wherein one end of the support frame is fixedly connected with the stirring shaft, and the other end of the support frame is fixedly connected with the stirring rake.
3. The settling tank for alumina production according to claim 1, wherein the discharge pipe comprises an upper pipe body, a middle pipe body and a lower pipe body, the inner diameter of the upper pipe body and the inner diameter of the lower pipe body are larger than that of the middle pipe body, and the upper pipe body, the middle pipe body and the lower pipe body are connected through an annular inclined surface.
4. The settling tank for alumina production according to claim 1, wherein the tapping pipe comprises a first pipe body and a second pipe body which are flared, and the end of the first pipe body having a smaller inner diameter is connected to the end of the second pipe body having a smaller inner diameter.
5. The alumina production settler of claim 4, wherein the first tube and the second tube are of an integrally formed structure.
6. The settling tank for aluminum oxide production as claimed in claim 1, wherein the swash plate is a plurality of swash plates uniformly distributed along the inner wall of the tank body.
7. The settling tank for alumina production according to claim 6, wherein the surface of the swash plate faces in the vertical direction, and the plate body is inclined downward.
8. The settling tank for aluminum oxide production as claimed in claim 1, wherein the wave guard surrounds the inner wall of the tank body and forms an annular plate body, the surface of the wave guard faces upwards, and the plate body is arranged in a downward inclination manner.
9. The settling tank for alumina production as claimed in claim 1, wherein the filter layer is a filter cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020652338.6U CN213253139U (en) | 2020-04-26 | 2020-04-26 | Settling tank for aluminum oxide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020652338.6U CN213253139U (en) | 2020-04-26 | 2020-04-26 | Settling tank for aluminum oxide production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213253139U true CN213253139U (en) | 2021-05-25 |
Family
ID=75935453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020652338.6U Active CN213253139U (en) | 2020-04-26 | 2020-04-26 | Settling tank for aluminum oxide production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213253139U (en) |
-
2020
- 2020-04-26 CN CN202020652338.6U patent/CN213253139U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206486333U (en) | A kind of coagulating sedimentation integrated reactor | |
| CN1315219A (en) | Solid-liquid separator | |
| CN206069590U (en) | Rainwater high efficiency clarification tank | |
| CN103880131B (en) | A kind of method and apparatus of micro-vortex efficient clarifying reaction device | |
| JP2008246282A (en) | Muddy water purifying separator | |
| CN107337263A (en) | Vertical-flow coagulating sedimentation and the dual-purpose pond of air supporting | |
| CN112811675A (en) | Underground coal mine muddy water treatment and reuse system and method | |
| CN208694465U (en) | A kind of water environment treatment sewage-treatment plant | |
| CN213253139U (en) | Settling tank for aluminum oxide production | |
| CN112358017B (en) | System and method for treating sewage by utilizing induced crystallization | |
| CN213253137U (en) | Settling tank | |
| CN210885400U (en) | Flotation device for sewage treatment | |
| CN214327423U (en) | Waste water purifying and clarifying pool | |
| CN215102771U (en) | Efficient muddy water treatment thickener with coagulation structure | |
| CN104692559A (en) | High-density sedimentation and clarifying integrated device with square overall upper and lower cross sections for water treatment | |
| KR20190102376A (en) | Digging waste water treating apparatus having high efficiency of admixture·flock sedimentation equipment and the method | |
| CN112897842A (en) | Efficient muddy water treatment thickener with coagulation structure | |
| CN208320181U (en) | A kind of detention tank | |
| CN208022757U (en) | Labyrinth type water purifier | |
| CN111170546A (en) | High-density clarification tank | |
| CN210159243U (en) | Slag water clarifying tank for gasification furnace | |
| CN214654143U (en) | Underground coal mine muddy water treatment and reuse system | |
| CN210457903U (en) | Sludge settling tank | |
| CN217398611U (en) | Carbon sand coagulating sedimentation device | |
| CN217808876U (en) | Industrial wastewater sedimentation treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |