CN102107094A - Settling tank - Google Patents
Settling tank Download PDFInfo
- Publication number
- CN102107094A CN102107094A CN2009103124344A CN200910312434A CN102107094A CN 102107094 A CN102107094 A CN 102107094A CN 2009103124344 A CN2009103124344 A CN 2009103124344A CN 200910312434 A CN200910312434 A CN 200910312434A CN 102107094 A CN102107094 A CN 102107094A
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- China
- Prior art keywords
- feed pipe
- cylindrical shell
- flocculant
- cylinder body
- settling tank
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Abstract
The invention discloses a settling tank which comprises a cylinder body (1), wherein a raking machine (2) is arranged in the cylinder body (1); an overflow port (3) is arranged on the upper section of the cylinder wall of the cylinder body (1); a bottom flow outlet (4) is arranged at the bottom of the cylinder body (1); a feed well (5) is connected in the cylinder body (1); a feed pipe (6) is connected to the cylinder body (1); the outlet of the feed pipe (6) is tangential with the feed well (5); and a flocculant feed pipe (7) is connected to the feed pipe (6). According to the invention, flocculant and slurry are quickly mixed; and the mixed slurry enters the feed well along the tangential direction, rotates and settles in the feed well and is mixed with the flocculant again; therefore, by adopting the settling tank disclosed by the invention, the area of the settling tank can be reduced, the settling efficiency can be improved, and the solid content of settling bottom flow can be increased; and meanwhile, the tests and detection conducted by the applicant indicate that the size of the settling tank is reduced from phi40m-5m-50m to phi13m-16m after the settling tank disclosed by the invention is adopted.
Description
Technical field
The present invention relates to a kind of subsider, design the subsider that a kind of volume is little, settling efficiency is high especially.
Background technology
In the production procedure of aluminium oxide, the dilution ore pulp of sending from the stripping workshop is sent to that red mud separates and draining room, carries out preliminary Separation of Solid and Liquid, isolate red mud after, the thick liquid of overflow is sent to the controlled filter workshop and further filters, to obtain seminal fluid.In this process, we wish red mud sedimentation as soon as possible, and the overflow that obtains is limpid as much as possible, and obtain the high red mud that contains admittedly, to alleviate the washing times of subsequent wash workshop section, reduce the consumption of wash water.In the prior art, alumina producer adopts flat subsider to carry out separating, washing, the diameter of flat subsider reaches Φ 40～50m, flocculant also is directly to throw in from the whole bag in groove top, cause the floor space of subsider big like this, sinking speed is slow, and the underflow that obtains contains lower admittedly, and separating effect is not satisfactory.
Summary of the invention
The technical problem to be solved in the present invention is, provides that a kind of volume is little, settling efficiency is high, the sedimentation underflow contains high subsider admittedly, can overcome the deficiencies in the prior art.
Technical scheme of the present invention; It comprises cylindrical shell, is provided with the rake machine in cylindrical shell, is provided with overfall at the barrel epimere of cylindrical shell, be provided with the underflow outlet in the cylindrical shell bottom, in cylindrical shell, be connected with feedwell, on cylindrical shell, be connected with feed pipe, the outlet and the feedwell of feed pipe are tangent, and are connected with the flocculant feed pipe on feed pipe.
On feed pipe, be provided with Venturi tube.
The diameter of cylindrical shell is 13～16m,
The quantity of flocculant feed pipe is 2～5.
The tube end of cylindrical shell is taper.
The height of cylindrical shell is 17～23m.
The diameter of feedwell is Φ 3m～5m, highly is 4～6m.
Compared with the prior art, the present invention is by connecting feedwell in cylindrical shell, on cylindrical shell, connect feed pipe, the outlet and the feedwell of feed pipe are tangent, on feed pipe, be connected with the flocculant feed pipe, just can contact after the next dilution slip of stripping enters feed pipe like this with the flocculant in the flocculant feed pipe, make flocculant and slip rapid mixing, mixed slip tangentially enters feedwell, slip rotates sedimentation in the feed well mixes with flocculant once more, and fast hierarchical obtains limpid overflow layer under the effect of gravity and flocculant, muddy intermediate layer and bottom flow layer; Therefore adopt the present invention just can reduce the area of subsider, improve settling efficiency, the sedimentation underflow contains admittedly, simultaneously through testing detection through the applicant, the size of subsider just can be reduced to Φ 13m～16m from Φ 40m～5m～50m behind employing the present invention, with diameter is that 14 subsider is an example, the inventor adopts the separation tank of 1 Φ 14m, 5 Φ 14m sinks, can handle the dried red mud amount of 60t/h～70t/h, underflow contains admittedly can reach 42%～46%, the last underflow contains admittedly can reach 50%～52%, separates overflow (thick liquid) and once washing overflow and contains admittedly≤150mg/L.On feed pipe, establish Venturi tube,, can suck when time washing overflow and carry out from dilution like this from the pulp flow scooter 2.5～3.5m/s of feed pipe nozzle ejection; The diameter of cylindrical shell is 13～16m, and the height of cylindrical shell is 17～23m, and the diameter of feedwell is Φ 3m～5m, highly is 4～6m, and these data all are that the applicant tests and detection back gained through a large amount of, and purpose is to satisfy technological requirement, can save construction costs again.The quantity of flocculant feed pipe is made as 2～5, can make flocculant more even with contacting of slip like this; Taper is adopted at the tube end of cylindrical shell, makes things convenient for the work of rake machine like this.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A view of Fig. 1.
The specific embodiment
Embodiment 1: as depicted in figs. 1 and 2, subsider, it comprises the cylindrical shell 1 of steel, the diameter of cylindrical shell 1 is for being 13～16m, highly be 17～23m, cylindrical shell 1 is by barrel, the tube end and cover are welded to each other formation, and the tube end is taper, cover is a sphere shape, be provided with the rake machine 2 that stirs slip in cylindrical shell 1, the speed that the rake machine rotates is 0.12 rev/min, and rake machine 2 can carry out when the moment of torsion load increases, and moment of torsion is high reports to the police, the high warning, and can shut down self-protection, barrel epimere at cylindrical shell 1 is provided with overfall 3, is provided with underflow outlet 4 at the tube end of cylindrical shell 1, is welded with a columniform feedwell 5 in cylindrical shell 1, the diameter of feedwell 5 is Φ 3m～5m, highly is 4～6m; Also be connected with a feed pipe 6 on cylindrical shell 1, the inwall of the outlet of feed pipe 6 and feedwell 5 is tangent, and the upper end that is connected with 7,2～5 flocculant feed pipes 7 of 2～5 flocculant feed pipes on feed pipe 6 is connected with the flocculant house steward.
When concrete the use, the dilution slip that stripping comes enters feed pipe 6 from charging aperture, 2～5 flocculant feed pipes 7 are connected and can make flocculant and slip fast and evenly mix on the feed pipe 6, the mixed slurry of ejection tangentially enters feedwell 5, slip rotates sedimentation in feedwell 5 mixes with flocculant once more, and fast hierarchical obtains limpid overflow layer, muddy intermediate layer and bottom flow layer under the effect of gravity and flocculant.Can be divided into separation tank and washing settling groove because of subsider simultaneously, because the material in the washing settling groove feed pipe is thicker, therefore can on feed pipe 7, Venturi tube be set, high speed slip from the ejection of the venturi mouth of pipe just can contact dilution once more with isolated washing lotion like this, improves separation, clean result.
Claims (7)
1. subsider, it comprises cylindrical shell (1), in cylindrical shell (1), be provided with rake machine (2), barrel epimere at cylindrical shell (1) is provided with overfall (3), be provided with underflow outlet (4) in cylindrical shell (1) bottom, its feature in: in cylindrical shell (1), be connected with feedwell (5), on cylindrical shell (1), be connected with feed pipe (6), the outlet of feed pipe (6) and feedwell (5) are tangent, and are connected with flocculant feed pipe (7) on feed pipe (6).
2. subsider according to claim 1 is characterized in that: be provided with Venturi tube on feed pipe (6).
3. subsider according to claim 1 is characterized in that: the diameter of cylindrical shell (1) is 13～16m,
4. according to claim 1 or 3 described subsiders, it is characterized in that: the tube end of cylindrical shell (1) is taper.
5. subsider according to claim 1 is characterized in that: the quantity of flocculant feed pipe (7) is 2～5.
6. subsider according to claim 1 is characterized in that: the height of cylindrical shell (1) is 17～23m.
7. subsider according to claim 1 is characterized in that: the diameter of feedwell (5) is Φ 3m～5m, highly is 4～6m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103124344A CN102107094A (en) | 2009-12-28 | 2009-12-28 | Settling tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103124344A CN102107094A (en) | 2009-12-28 | 2009-12-28 | Settling tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102107094A true CN102107094A (en) | 2011-06-29 |
Family
ID=44171444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103124344A Pending CN102107094A (en) | 2009-12-28 | 2009-12-28 | Settling tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102107094A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230684A (en) * | 2013-05-09 | 2013-08-07 | 中南大学 | Double-feed-pipe flat-bottom settling tank |
| CN104069657A (en) * | 2013-03-29 | 2014-10-01 | 沈阳铝镁设计研究院有限公司 | Device for preventing high-efficient settling tank from scarring and configuration method |
| CN105013600A (en) * | 2015-07-03 | 2015-11-04 | 攀钢集团钛业有限责任公司 | Device used for continuously separating coarse grains before coating process of titanium dioxide |
| CN105641980A (en) * | 2016-02-18 | 2016-06-08 | 长江勘测规划设计研究有限责任公司 | Solid-liquid separation device for sand washing wastewater |
| CN105828902A (en) * | 2013-12-20 | 2016-08-03 | 力拓艾尔坎国际有限公司 | Settler for decanting mineral slurries and method for separating clarified liquid from thickened slurry of said mineral slurries |
| CN106582070A (en) * | 2017-02-19 | 2017-04-26 | 王莉萍 | Ferric chloride coagulating agent uniform sprinkling device for sedimentation tank |
| CN107626120A (en) * | 2017-10-20 | 2018-01-26 | 中国恩菲工程技术有限公司 | For concentrator feeding mechanism and there is its concentrator |
-
2009
- 2009-12-28 CN CN2009103124344A patent/CN102107094A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069657A (en) * | 2013-03-29 | 2014-10-01 | 沈阳铝镁设计研究院有限公司 | Device for preventing high-efficient settling tank from scarring and configuration method |
| CN103230684A (en) * | 2013-05-09 | 2013-08-07 | 中南大学 | Double-feed-pipe flat-bottom settling tank |
| CN105828902A (en) * | 2013-12-20 | 2016-08-03 | 力拓艾尔坎国际有限公司 | Settler for decanting mineral slurries and method for separating clarified liquid from thickened slurry of said mineral slurries |
| CN105013600A (en) * | 2015-07-03 | 2015-11-04 | 攀钢集团钛业有限责任公司 | Device used for continuously separating coarse grains before coating process of titanium dioxide |
| CN105641980A (en) * | 2016-02-18 | 2016-06-08 | 长江勘测规划设计研究有限责任公司 | Solid-liquid separation device for sand washing wastewater |
| CN105641980B (en) * | 2016-02-18 | 2018-12-14 | 长江勘测规划设计研究有限责任公司 | Washed-out sand waste water solid separator |
| CN106582070A (en) * | 2017-02-19 | 2017-04-26 | 王莉萍 | Ferric chloride coagulating agent uniform sprinkling device for sedimentation tank |
| CN107626120A (en) * | 2017-10-20 | 2018-01-26 | 中国恩菲工程技术有限公司 | For concentrator feeding mechanism and there is its concentrator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110629 |