CN107720794A - Subsider scabs soda boiling and reutilization system and method for work - Google Patents
Subsider scabs soda boiling and reutilization system and method for work Download PDFInfo
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- CN107720794A CN107720794A CN201711098603.XA CN201711098603A CN107720794A CN 107720794 A CN107720794 A CN 107720794A CN 201711098603 A CN201711098603 A CN 201711098603A CN 107720794 A CN107720794 A CN 107720794A
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- subsider
- underflow
- pump
- vat
- lye
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Scabbed soda boiling and reutilization system and method for work the invention discloses a kind of subsider, it solves the problems, such as that subsider scabs and clears up bothersome and easily cause accident, the subsider soda boiling that scabs is thorough, the alumina composition during subsider scabs is reclaimed, cost of labor is saved, aluminum oxide benefit is improved, its technical scheme is：Including lye tank (vat), subsider, the subsider underflow circulatory system and subsider overflow circulating system；The alkali lye of heating is delivered to subsider by the lye tank (vat) by delivery pump；The subsider underflow circulatory system includes the underflow pump being connected with sedimentation trench bottom, and underflow pump is returned by underflow circulating line and is connected to subsider bottom；The subsider overflow circulating system includes the flood pump being connected with subsider top, and flood pump is connected to subsider top by overflow circulating back of pipeline.
Description
Technical field
Scab processing technology field the present invention relates to subsider, scabbed soda boiling and recycling more particularly to a kind of subsider
System and method of work.
Background technology
At present, industrial production process for making alumina, refine, it is necessary to stripping slurry to obtain qualified thick liquid
Settled, equipment therefor is subsider.Due to reasons such as temperature reduction, slurry hydrolysis after subsider long-term operation, heavy
Adhere on drop groove cell wall and pipeline and largely scab, scab thick about 2 centimetres to 30 centimetres, because each subsider is in sedimenting system effect
Difference, the composition that scabs are different.The composition that scabs is：Aluminum oxide, content are 25% to 60%, and alumina silica ratio is 1.5 to 21.That scabs deposits
Subsider safe operation is being had a strong impact on, need to periodically cleared up.
Current subsider cleaning scabs as manual cleaning manually clears up subsider cell wall, it is necessary to prick after hack lever is ascended a height with pneumatic pick
Deng affiliated facility, scab manually to clear up after cleaning and manually clear up overflow cylinder with pneumatic pick to groove outside, it is necessary to be played with cage.
A large amount of unsafe factors (ascend a height and fall, scab to drop and smash hack lever etc.) in the scale removal process that scabs being present, cleaning is taken a lot of work, arduously,
About 30 days to 50 days used time.Scabbing for cleaning out need to be stored in alumina laterite stockyard with vehicle outward transport heap, be stored up as solid waste.By
A large amount of unsafe factors be present in manual cleaning, while scab to recycle and cause to waste.Therefore a kind of safe and efficient economy
Subsider manner of cleaning up and the recycling that scabs research it is extremely urgent.
In summary, scabbed in the prior art for subsider and clear up bothersome and easy the problem of causing accident, still lacked
Effective solution.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of subsider scab soda boiling and recycle system
System, it uses mechanized operation, saving of labor, laborsaving, time saving；
Further, the present invention uses following technical proposals：
Subsider scabs soda boiling and reutilization system, including lye tank (vat), subsider, the subsider underflow circulatory system and sedimentation
Groove overflow circulating system；The alkali lye of heating is delivered to subsider by the lye tank (vat) by delivery pump；The subsider underflow follows
Loop system includes the underflow pump being connected with sedimentation trench bottom, and underflow pump is returned by underflow circulating line and is connected to subsider bottom；Institute
The flood pump that subsider overflow circulating system includes being connected with subsider top is stated, flood pump is connected to by overflow circulating back of pipeline
Subsider top.
Further, pipeline, lye tank (vat) are passed through provided with the initial steam for extending to lye tank (vat) internal upper part at the top of the lye tank (vat)
Top is additionally provided with the alkali lye extended in the middle part of in lye tank (vat) and is passed through pipeline.
Further, it is provided with temperature measuring equipment at the top of the lye tank (vat).
Further, bottom sets agitating device in the subsider.
Further, the subsider top sets charging aperture, and delivery pump connects with charging aperture.
Further, the first initial steam input channel for extending to subsider internal upper part is provided with the top of the subsider, is sunk
Drop groove top portion is additionally provided with the second initial steam input channel for extending to bottom in subsider.
Further, it is equipped with temperature measuring equipment at the top and bottom of the subsider.
Further, the subsider top is provided with overfall, and overfall is connected by pipeline with overflow cylinder, overflow cylinder with
Flood pump connects.
Further, the overflow circulating pipeline connects with charging aperture.
Further, the underflow pump is also connected by underflow pipeline with lye tank (vat).
Further, the underflow pump is connected by underflow pipeline with accumulator tank, and accumulator tank connects with alumina leaching system
It is logical.
For overcome the deficiencies in the prior art, the work side for soda boiling and the reutilization system of being scabbed the invention provides subsider
Method, comprise the following steps：
Initial steam and alkali lye are passed through in lye tank (vat), alkali lye is added to 92-98 DEG C in lye tank (vat) through initial steam；
The alkali lye of heating is delivered in subsider by delivery pump, and soda boiling is carried out to subsider cell wall by agitating device；
Subsider bottom discharge enters subsider via underflow pump, and overflow discharging in subsider top is recycled into through flood pump
Subsider；
If monitoring subsider head temperature is less than 95 DEG C, initial steam is passed through to subsider internal upper part, if monitoring subsider bottom
Portion's temperature is less than 95 DEG C, and into subsider, bottom is passed through initial steam；
The complete slurry of soda boiling reclaims through underflow pump, and is delivered to alumina leaching system recovery aluminum oxide.
Compared with prior art, the beneficial effects of the invention are as follows：
By the system of the present invention, subsider is conveyed into by alkali lye is heated, the subsider soda boiling that scabs is thorough, change
Manual cleaning mode originally, realizes mechanization, improves operation rate, saving of labor, laborsaving, time saving.
In present system, the subsider underflow circulatory system is set to carry out subsider bottom cycle alkali in sedimentation trench bottom
Boil, set subsider overflow circulating system to carry out the soda boiling of overflow pipe at the top of subsider, and by making slurry in subsider
Flowing, accelerate the speed that scabs of soda boiling.
The system of the present invention, has incorporated alumina producing, has avoided the waste of resource (scabbing), the aluminum oxide in scabbing is straight
Connect and enter alumina producing flow, reclaimed the alumina composition during subsider scabs, saved cost of labor, improved oxygen
Change aluminium benefit.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is present system schematic diagram；
In figure, 1 lye tank (vat), 2 initial steams are passed through pipeline, and 3 alkali lye are passed through pipeline, 4 delivery pumps, 5 subsiders, 6 charging apertures, and 7
Agitating device, 8 underflow circulating lines, 9 underflow pumps, 10 temperature measuring equipments, 11 first initial steam input channels, 12 second initial steams are defeated
Enter pipeline, 13 overflow cylinders, 14 temperature measuring equipments, 15 flood pumps, 16 underflow pipelines, 17 temperature measuring equipments, 18 overflow circulating pipelines.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, it is bothersome and easily cause accident to there is the subsider cleaning that scabs in the prior art
Problem, in order to solve technical problem as above, scabbed soda boiling and reutilization system and work present applicant proposes a kind of subsider
Method, the alkali lye after being heated by initial steam is delivered to subsider charging aperture by delivery pump, entered by the underflow circulatory system
Row bottom cycle soda boiling, the soda boiling of overflow pipe is carried out by overflow circulating system, is settled by the stirring of agitating device
The soda boiling of groove cell wall and its subsider affiliated facility etc..Slurry (having reclaimed the aluminum oxide in scabbing) after soda boiling can directly enter
Enter alumina leaching system；The subsider of the present invention soda boiling system that scabs perfectly has incorporated alumina producing, and subsider is scabbed
Soda boiling is thorough, has reclaimed the alumina composition during subsider scabs, has saved cost of labor, improves aluminum oxide benefit.
In a kind of typical embodiment of the application, as shown in Figure 1, there is provided a kind of subsider scabs soda boiling and sharp again
With system, including lye tank (vat) 1, subsider 5, the subsider underflow circulatory system and subsider overflow circulating system；The lye tank (vat) 1
The alkali lye of heating is delivered to by subsider 5 by delivery pump 4；The subsider underflow circulatory system includes and the bottom of subsider 5
The underflow pump 9 of connection, underflow pump 9 is returned by underflow circulating line 8 is connected to the bottom of subsider 5；The subsider overflow circulating system
System includes the flood pump 15 being connected with the top of subsider 5, and flood pump 15 is returned by overflow circulating pipeline 18 and is connected on subsider 5
Portion.
The top of lye tank (vat) 1 is passed through pipeline 2 provided with the initial steam for extending to the internal upper part of lye tank (vat) 1, and the top of lye tank (vat) 1 is also
Pipeline 3 is passed through provided with the alkali lye for extending to middle part in lye tank (vat) 1.
The top of lye tank (vat) 1 is provided with temperature measuring equipment 17.
Bottom sets agitating device 7 in the subsider 5.Agitating device 7 can use rake machine stirring device.
The top of subsider 5 sets charging aperture 6, and delivery pump 4 connects with charging aperture 6, the overflow circulating pipeline 18 and
Charging aperture 6 connects.
The top of subsider 5 is provided with the first initial steam input channel 11 for extending to the internal upper part of subsider 5, subsider 5
Top is additionally provided with the second initial steam input channel 12 for extending to bottom in subsider 5.
The top of subsider 5 is provided with temperature measuring equipment 10, and the bottom of subsider 5 is provided with temperature measuring equipment 14.To realize subsider
Interior temperature accurately controls.
The top of subsider 5 is provided with overfall, and overfall is connected by pipeline with overflow cylinder 13, overflow cylinder 13 and overflow
Pump 15 connects.
The underflow pump 9 is also connected by underflow pipeline 16 with lye tank (vat) 1.
Or the underflow pump is connected by underflow pipeline with accumulator tank, accumulator tank and alumina leaching system connectivity.Alkali
The slurry boiled is reclaimed via underflow pump, and is conveyed to alumina leaching system and is reclaimed aluminum oxide therein.
The temperature measuring equipment 10 of the present invention, temperature measuring equipment 14, there is temp probe in temperature measuring equipment 17.
The initial steam being passed through in the present invention inside lye tank (vat) 1 and subsider 5 is from alumina producing dissolution heating material
Initial steam used in slurry.
In the typical embodiment of another kind of the application, there is provided a kind of subsider scabs soda boiling and reutilization system
Method of work, comprise the following steps：
Pipeline 2 being passed through via initial steam in lye tank (vat) 1 and being passed through initial steam, pipeline 3 is passed through via alkali lye in lye tank (vat) 1
Alkali lye is passed through, alkali lye is added to 92-98 DEG C in lye tank (vat) 1 through initial steam, and temperature is monitored by temperature measuring equipment 17；
The alkali lye of heating is delivered in subsider 5 by delivery pump 4, and being stirred soda boiling by the rotation of agitating device 7 sinks
The drop cell wall of groove 5 scabs and its affiliated facility；
The bottom discharge of subsider 5 enters subsider 5 via underflow pump 9, underflow circulating line 8, circulates soda boiling subsider vertebra
Bottom position；The top overflow discharging of subsider 5 is recycled into subsider 5 through flood pump 15, overflow circulating pipeline 18, passes through overflow alkali
Liquid enters overflow cylinder, is boiled over flow cartridge by subsider flood pump circulation alkali；
With alkali lye cyclic process, alkali liquid temperature reduces, if temperature measuring equipment 10 monitors the head temperature of subsider 5 and is less than 95 DEG C,
Initial steam is passed through via the first initial steam input channel 11 to the internal upper part of subsider 5 to heat subsider top, if thermometric
Device 14 monitors the bottom temp of subsider 5 and is less than 95 DEG C, is passed through bottom into subsider 5 via the second initial steam input channel 12
Initial steam heats to sedimentation trench bottom；
Scabbed with soda boiling subsider and incorporate alkali lye, its middle alumina composition that scabs enters alkali lye, and soda boiling complete slurry is the bottom of through
Stream pump 9 is reclaimed, and aluminum oxide is reclaimed as alumina producing slurry pipeline transport to alumina leaching system.
Using the system and method for the present invention, the processing that scabbed to subsider only needs the used time 10 to 15 days or so, greatly improved
Cleaning efficiency.
It is by present system and method, the subsider soda boiling that scabs is thorough, change original scab as solid waste heap
Deposit and be directly entered alumina producing flow with manual cleaning mode, the aluminum oxide in scabbing, realize waste (scab) resource,
Subsider cleaning realizes mechanization, improves the operation rate of subsider, has saved production cost, improves aluminum oxide effect
Benefit.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
- Soda boiling and reutilization system 1. subsider scabs, it is characterized in that, including lye tank (vat), subsider, subsider underflow cyclic system System and subsider overflow circulating system；The alkali lye of heating is delivered to subsider by the lye tank (vat) by delivery pump；The sedimentation Bottom land flow circulating system includes the underflow pump being connected with sedimentation trench bottom, and underflow pump is returned by underflow circulating line and is connected to subsider Bottom；The subsider overflow circulating system includes the flood pump being connected with subsider top, and flood pump passes through overflow circulating pipe Road returns and is connected to subsider top.
- 2. the system as claimed in claim 1, it is characterized in that, it is provided with the top of the lye tank (vat) and extends to the new of lye tank (vat) internal upper part Steam is passed through pipeline, and the alkali lye extended in the middle part of in lye tank (vat) is additionally provided with the top of lye tank (vat) and is passed through pipeline；At the top of the lye tank (vat) Provided with temperature measuring equipment.
- 3. the system as claimed in claim 1, it is characterized in that, bottom sets agitating device in the subsider；The subsider Top and bottom are equipped with temperature measuring equipment.
- 4. the system as claimed in claim 1, it is characterized in that, the subsider top sets charging aperture, delivery pump and charging aperture Connection.
- 5. the system as claimed in claim 1, it is characterized in that, it is provided with the top of the subsider and extends to the of subsider internal upper part One initial steam input channel, subsider top are additionally provided with the second initial steam input channel for extending to bottom in subsider.
- 6. the system as claimed in claim 1, it is characterized in that, the subsider top is provided with overfall, and overfall passes through pipeline Connected with overflow cylinder, overflow cylinder connects with flood pump.
- 7. system as claimed in claim 4, it is characterized in that, the overflow circulating pipeline connects with charging aperture.
- 8. the system as claimed in claim 1, it is characterized in that, the underflow pump is also connected by underflow pipeline with lye tank (vat).
- 9. the system as claimed in claim 1, it is characterized in that, the underflow pump is connected by underflow pipeline with accumulator tank, recovery Groove and alumina leaching system connectivity.
- 10. the method for work of the system as described in claim any one of 1-9, it is characterized in that, comprise the following steps：Initial steam and alkali lye are passed through in lye tank (vat), alkali lye is added to 92-98 DEG C in lye tank (vat) through initial steam；The alkali lye of heating is delivered in subsider by delivery pump, and soda boiling is carried out to subsider cell wall by agitating device；Subsider bottom discharge enters subsider via underflow pump, and overflow discharging in subsider top is recycled into sedimentation through flood pump Groove；If monitoring subsider head temperature is less than 95 DEG C, initial steam is passed through to subsider internal upper part, if monitoring sedimentation trench bottom temperature Degree is less than 95 DEG C, and into subsider, bottom is passed through initial steam；The complete slurry of soda boiling reclaims through underflow pump, and is delivered to alumina leaching system recovery aluminum oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711098603.XA CN107720794B (en) | 2017-11-09 | 2017-11-09 | Settling tank scar soda boiling and recycling system and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711098603.XA CN107720794B (en) | 2017-11-09 | 2017-11-09 | Settling tank scar soda boiling and recycling system and working method |
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| CN107720794A true CN107720794A (en) | 2018-02-23 |
| CN107720794B CN107720794B (en) | 2023-10-10 |
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Cited By (2)
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| CN108672446A (en) * | 2018-07-11 | 2018-10-19 | 江阴市华能电热器材有限公司 | A kind of comprehensive cleaning device for scabs of aluminium oxide settling tank and its application method |
| CN111410221A (en) * | 2020-03-26 | 2020-07-14 | 重庆市南川区先锋氧化铝有限公司 | Be applicable to crystal seed processing apparatus among sodium aluminate production technology |
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| CN111410221A (en) * | 2020-03-26 | 2020-07-14 | 重庆市南川区先锋氧化铝有限公司 | Be applicable to crystal seed processing apparatus among sodium aluminate production technology |
| CN111410221B (en) * | 2020-03-26 | 2022-11-08 | 重庆市九龙万博新材料科技有限公司 | Be applicable to crystal seed processing apparatus among sodium aluminate production technology |
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| Publication number | Publication date |
|---|---|
| CN107720794B (en) | 2023-10-10 |
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