CN110090477A - A kind of deep-cone settling slot feeding device - Google Patents
A kind of deep-cone settling slot feeding device Download PDFInfo
- Publication number
- CN110090477A CN110090477A CN201810093354.3A CN201810093354A CN110090477A CN 110090477 A CN110090477 A CN 110090477A CN 201810093354 A CN201810093354 A CN 201810093354A CN 110090477 A CN110090477 A CN 110090477A
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- China
- Prior art keywords
- deep
- mixing chamber
- feeding device
- diffuser casing
- compressed air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2405—Feed mechanisms for settling tanks
Abstract
The present invention relates to a kind of deep-cone settling slot feeding devices of alumina producing Bayer process.A kind of deep-cone settling slot feeding device, the overflow pipe on deep-cone settling slot are successively connect with mixing chamber and diffuser casing, and venturi mouth is equipped between mixing chamber and diffuser casing, and diffuser casing discharge end is connect with settling tank feeding pipe, equipped with compressed air inlet pipe on mixing chamber.The advantages of this hair effect: the fluctuation that the present invention has fully considered subsider feed rate and contained admittedly, by the feeding device for changing both air flow modulation feed rate, the bubble that compressed air generates can play the role of mixing slurry, substantially increase the mixing efficiency of subsider, it can make static mixer use, the height difference of discharging feed inlet is utilized simultaneously, flows automatically to subsider overflow in feeding device main body, has saved energy consumption.Dilution liquid flow can be adjusted with Feedstock fluctuation, while the feed system after optimization can guarantee being sufficiently mixed for slurry, the mixing efficiency for being sufficiently mixed rear slurry can also significantly improve.
Description
Technical field
The present invention relates to a kind of subsider feeding device more particularly to a kind of deep-cone settling slots of alumina producing Bayer process
Feeding device.
Background technique
Red- mud settlement and separation washing is one of the important procedure in Bayer process aluminum oxide production process, after Bayer Process digestion
Dilution slurries are the mixtures of sodium aluminate solution and red mud, and the two can be separated into pure sodium aluminate solution by red-mud settlement
With large arch dam red mud.Deep-cone settling slot input concentration is higher, needs to be diluted again with the supernatant liquor of this subsider, to reach
Better effect of settling.Since the supernatant liquor amount of traditional deep-cone settling slot venturi feed pipe sucking is unable to control, work as charging
When flow velocity is with consolidating containing changing, it is extremely difficult to preferable dilution effect, causes effect of settling poor, serious shadow is caused to production
It rings.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of deep-cone settling slot feeding devices, it is therefore an objective to solve deep cone
Settle the problem for the dilution effect difference that Feedstock fluctuation generates.
A kind of deep-cone settling slot feeding device of the invention for the above-mentioned purpose, overflow pipe on deep-cone settling slot successively with it is mixed
It closes room to connect with diffuser casing, venturi mouth is equipped between mixing chamber and diffuser casing, diffuser casing discharge end and settling tank feeding pipe connect
It connects, compressed air inlet pipe is equipped on mixing chamber.
Diffuser casing, compressed air inlet pipe and mixing chamber are seamless steel pipe, and venturi mouth is variable diameter mouth.
Compressed air enters mixing chamber towards slurry flow direction.
The insertion mixing of compressed air inlet pipe is indoor, and elbow, flow direction of the elbow towards slurry are equipped at insert port.
The diameter at venturi mouth both ends is identical as the diameter of mixing chamber and diffuser casing, and the mid diameter of venturi mouth is less than text
The diameter at the mound both ends Li Kou.
Venturi mouth is welded to together with diffuser casing and mixing chamber, and weld bead height is that thin pieces is thick in two adjacent weldments
Degree.
The advantages of this hair effect:, the fluctuation that the present invention has fully considered subsider feed rate and contained admittedly passes through change
The feeding device of both air flow modulation feed rate, the bubble that compressed air generates can play the role of mixing slurry, significantly
The mixing efficiency of subsider is improved, static mixer use can be made, while the height difference of discharging feed inlet is utilized, makes subsider
Overflow flows automatically in feeding device main body, has saved energy consumption.Dilution liquid flow can be adjusted with Feedstock fluctuation, while after optimization
Feed system can guarantee being sufficiently mixed for slurry, and the mixing efficiency for being sufficiently mixed rear slurry can also significantly improve.
Detailed description of the invention
Fig. 1 is elevational schematic view of the present invention.
Fig. 2 is floor map of the present invention.
In figure: 1, diffuser casing；2, venturi mouth；3, mixing chamber；4, compressed air inlet pipe；5, overflow pipe；6, subsider
Feed pipe；7, deep-cone settling slot.
Specific embodiment
Embodiments of the present invention combination attached drawing is described in detail below.
As shown, a kind of deep-cone settling slot feeding device of the present invention, overflow pipe 5 on deep-cone settling slot 7 successively with it is mixed
Room 3 and diffuser casing 1 is closed to connect, be equipped between mixing chamber 3 and diffuser casing 1 venturi mouth 2,1 discharge end of diffuser casing and subsider into
Expects pipe 6 connects, and compressed air inlet pipe 4 is equipped on mixing chamber 3.
Diffuser casing 1, compressed air inlet pipe 4 and mixing chamber 3 are seamless steel pipe, and venturi mouth 2 is variable diameter mouth.
Compressed air enters mixing chamber 3 towards slurry flow direction.
Compressed air inlet pipe 4 is inserted into mixing chamber 3, and elbow, flow direction of the elbow towards slurry are equipped at insert port.
The diameter at 2 both ends of venturi mouth is identical as the diameter of mixing chamber 3 and diffuser casing 1, and the mid diameter of venturi mouth 2 is small
Diameter in 2 both ends of venturi mouth.
Venturi mouth 2 is welded to together with diffuser casing 1 and mixing chamber 3, and weld bead height is thin pieces in two adjacent weldments
Thickness.Diffuser casing is connected with settling tank feeding pipe 6, will be sent by the slurry of venturi mouth to subsider, and venturi mouth 2 is to become
Diameter mouth, effect is the flow velocity for passing through Venturi tube slurry by changing, so that the pressure reduction of 1 side of diffuser casing, pushes slurry
It is flowed at towards settling tank feeding pipe 6.The compressed air being passed through from compressed air inlet pipe 4, in mixing chamber 3 and from overflow
Enter venturi mouth 2 after the overflow mixing of pipe 5, reduce the density of overflow, mixes indoor pulp density and be lower than from sedimentation
The density of slot overflow slurry, produces pressure difference, is conducive to slurry and flows to diffuser casing 1, is entering simultaneous with the slurry of bubble
It can be sufficiently mixed with other slurries (such as sedimentation underflow) when settling tank feeding pipe 6, improve mixing efficiency, be conducive to wash.When heavy
The slurry flow and solid when containing fluctuation, adjustable compressed air inlet amount for dropping slot feed pipe 6 change the stream from subsider overflow
Amount guarantees that the pulp density for entering subsider is up to standard.Settling tank feeding pipe effect is the material needed each stock into subsider
Summarize, enters subsider together with the overflow from diffuser casing 1.
Claims (6)
1. a kind of deep-cone settling slot feeding device, it is characterised in that overflow pipe on deep-cone settling slot successively with mixing chamber and diffusion
Room connection, is equipped with venturi mouth, diffuser casing discharge end is connect with settling tank feeding pipe, in mixing chamber between mixing chamber and diffuser casing
It is equipped with compressed air inlet pipe.
2. a kind of deep-cone settling slot feeding device according to claim 1, it is characterised in that diffuser casing, compressed air inlet
Pipe and mixing chamber are seamless steel pipe, and venturi mouth is variable diameter mouth.
3. a kind of deep-cone settling slot feeding device according to claim 1, it is characterised in that compressed air is flowed towards slurry
Direction enters mixing chamber.
4. a kind of deep-cone settling slot feeding device according to claim 3, it is characterised in that the insertion of compressed air inlet pipe
Mix it is indoor, at insert port be equipped with elbow, flow direction of the elbow towards slurry.
5. a kind of deep-cone settling slot feeding device according to claim 2, it is characterised in that the diameter at venturi mouth both ends
Identical as the diameter of mixing chamber and diffuser casing, the mid diameter of venturi mouth is less than the diameter at venturi mouth both ends.
6. a kind of deep-cone settling slot feeding device according to claim 1, it is characterised in that venturi mouth and diffuser casing and
Mixing chamber is welded to together, and weld bead height is thin pieces thickness in two adjacent weldments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093354.3A CN110090477B (en) | 2018-01-31 | 2018-01-31 | Deep cone settling tank feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093354.3A CN110090477B (en) | 2018-01-31 | 2018-01-31 | Deep cone settling tank feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110090477A true CN110090477A (en) | 2019-08-06 |
| CN110090477B CN110090477B (en) | 2021-09-10 |
Family
ID=67441978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810093354.3A Active CN110090477B (en) | 2018-01-31 | 2018-01-31 | Deep cone settling tank feeding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110090477B (en) |
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| CN205933369U (en) * | 2016-08-11 | 2017-02-08 | 浙江合众环保科技有限公司 | Novel jet aeration device |
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Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017390A (en) * | 1974-06-07 | 1977-04-12 | Societe Lab | Method for separating solid pollutants from fluids |
| CN1315923A (en) * | 1998-06-02 | 2001-10-03 | K·E·法尔克纳 | Hydrogen sulfide removal methods and apparatus |
| CN2767939Y (en) * | 2004-11-04 | 2006-03-29 | 徐建国 | Jet-type steam and water mixer |
| CN101428889A (en) * | 2008-11-28 | 2009-05-13 | 江苏工业学院 | Treatment method for removing ammonia nitrogen from wastewater |
| CN201530748U (en) * | 2009-10-29 | 2010-07-21 | 中国中化股份有限公司 | Gas blasting movable injection aerator |
| CN203208925U (en) * | 2013-05-03 | 2013-09-25 | 中石化南京工程有限公司 | Mixer |
| CN103447185A (en) * | 2013-08-06 | 2013-12-18 | 广东电网公司电力科学研究院 | Dry ice spraying device and dry ice spraying method |
| CN203663723U (en) * | 2013-12-31 | 2014-06-25 | 常州市钜岳水务环保科技有限公司 | Micro-nano air-water mixer |
| CN105597380A (en) * | 2016-01-03 | 2016-05-25 | 安徽康迪纳电力科技有限责任公司 | Pneumatic conveying dry powder direct charging system |
| CN105689157A (en) * | 2016-04-11 | 2016-06-22 | 安徽理工大学 | Swinging-stirring flotation equipment with self-slurry-mixing function |
| CN205933369U (en) * | 2016-08-11 | 2017-02-08 | 浙江合众环保科技有限公司 | Novel jet aeration device |
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|---|---|
| CN110090477B (en) | 2021-09-10 |
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