CN203754438U - Device for processing underflow and suspended matters of conical mother liquor tank - Google Patents
Device for processing underflow and suspended matters of conical mother liquor tank Download PDFInfo
- Publication number
- CN203754438U CN203754438U CN201320643012.7U CN201320643012U CN203754438U CN 203754438 U CN203754438 U CN 203754438U CN 201320643012 U CN201320643012 U CN 201320643012U CN 203754438 U CN203754438 U CN 203754438U
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- CN
- China
- Prior art keywords
- mother liquor
- liquor tank
- underflow
- pump
- tank
- 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.)
- Expired - Lifetime
Links
- 239000012452 mother liquor Substances 0.000 title claims abstract description 72
- 239000005432 seston Substances 0.000 claims description 19
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 16
- 239000006200 vaporizer Substances 0.000 claims description 15
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 238000010790 dilution Methods 0.000 description 7
- 239000012895 dilution Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000007667 floating Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000004131 Bayer process Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 206010039509 Scab Diseases 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a device for processing underflow and suspended matters of a conical mother liquor tank. The device is composed of an S1 conical mother liquor tank, an S3 mother liquor tank, an S5 evaporator and an S6 classifier, wherein the S1 is connected to the S6 through an underflow pump; the S3 is connected to the S5 through a big mother liquor pump; and the S6 is connected to a flat plate and a decomposer. Compared to an original flow, the device disclosed by the utility model is not required to deliver diluted mother liquor to the classifier through a special mother liquid pump and is not required to deliver underflow of the conical mother liquor tank to an overflow tank, so that an overflow pump is not required to run constantly and accessory equipment such as a leaf filter is not necessary; and therefore, the device not only simplifies flow and facilitates operation, but also greatly saves energy consumption and investment.
Description
Technical field
The utility model relates to organic metallurgical device technique field, particularly a kind of process taper mother liquor tank underflow and seston device.
Background technology
At the beginning of 21 century, rapidly, various countries' alumina industry has all expanded industrial scale in alumina industry development, and domestic alumina producing ability to 2007 will approximately reach 2,000 ten thousand tons of ore deposits the end of the year, and the production method of aluminum oxide be take Bayer process as main in the world at present.
Bayer process is that Bayer is named in 1889-1892 utility model, and it is when processing the high bauxite of alumina silica ratio, and flow process is simple, good product quality, and its reaction process is:
Al
2O
3·nH
2O+2NaOH+aq=2NaAl(OH)
4+aq
N is wherein 1 or 2.
The process of alumina producing Bayer process comprises: 1) high pressure digestion; 2) dissolved mineral slurry dilution and red mud separating, washing; 3) crystal seed is separated; 4) aluminium hydroxide separation, washing, roasting; 4) evaporation of decomposition nut liquid and the causticization of sodium carbonate.
Decomposition of crystal seed is wherein one of very crucial operation of alumina producing Bayer process, crystal seed separated abbreviation kind divides, lowering the temperature, adding under the condition of crystal seed, stirring exactly, make sodium aluminate solution separated, acquisition has certain performance to aluminium hydroxide product, obtain the seed precipitation solution that molecular ratio is higher, as the circulating mother liquor of stripping bauxite simultaneously.Technico-economical comparison to the output of product and quality and full factory has great effect.The Main Function of decomposition process is the seminal fluid that sedimentation operation is sent here, the aluminium hydroxide (crystal seed) filtering with vertical-disk filter after board-like heat exchange mixes, after mixing, enter decomposer and decompose, finally by crossing grading machine classification, the aluminium hydroxide that decomposition is completed is sent to square position filtration, roasting.
The separation circuit device of existing Bayer process is shown in accompanying drawing 2, this device comprises S1 taper mother liquor tank, S2 leaf filter, S3 mother liquor tank, S4 overflow groove, S5 vaporizer, S6 grading machine, the annexation of S1 and S2, taper mother liquor tank is sent to leaf filter by mother liquor floating material recovery pump and carries out mother liquor floating material recovery, S1 is connected with S4 by underflow pump, mother liquor tank by large mother liquor pumping toward vaporizer.
Composition in tapered mother liquor tank is the seed precipitation solution that filter filters out, contain aluminium hydroxide more than 0.8g/l, the mother liquor overflow on taper mother liquor tank top is in mother liquor tank, its contained aluminum hydroxide particles seldom, underflow in taper mother liquor tank has precipitated most aluminum hydroxide particles, and a part is delivered to overflow groove through underflow pump, and overflow groove is sent to decomposer by overflow type pump by slip, a part is carried out the recovery of mother liquor floating material through leaf filter in addition
But the problem that this device occurs is: the underflow seston higher (being greater than 0.8g/l) of taper mother liquor tank, the main component of seston is aluminum oxide, after heating after heating up by plate-type heat exchanger and by vaporizer, this part aluminum oxide can be dissolved in sodium aluminate solution again, but also can in plate-type heat exchanger and vaporizer, produce and scab, not only reduce thermo-efficiency, and etch evaporator and board-like heat exchanger; In order to solve this problem of underflow seston, generally all need reaction unit to install specially the auxiliary facilitys such as a cover system such as overflow groove, leaf filter machine, carry out seston recovery, not only invest high, complicated operation, working cost is high and recovering effect is also undesirable, the seston index of general treatment solution is greater than 0.3g/l, and it is not only not easy to operate but also greatly increased energy consumption that this flow process more complicated has been driven mother liquor pump, overflow type pump, leaf filter and auxiliary facility thereof more.
Therefore, need to provide a kind of device that addresses the above problem and save energy consumption.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is underflow and the seston of processing taper mother liquor tank, and saves the problem of energy consumption.
(2) technical scheme
A kind of device of processing taper mother liquor tank underflow and seston that the utility model provides, by S1 taper mother liquor tank, S3 mother liquor tank, S5 vaporizer and S6 grading machine, formed, wherein S1 is connected by underflow pump with S6, and S3 is connected with S5 by large mother liquor pump, and S6 connects square position and decomposer.
Wherein, during S6 classification, oarse-grained aluminum hydroxide particles is separated and is sent to square position filtration roasting; Short grained aluminium hydroxide returns in decomposer, continues to use as crystal seed.
(3) beneficial effect
1, existing flow process is that the mother liquor that filter filters out is sent to tapered mother liquor tank, and mother liquor tank is removed in the overflow of taper mother liquor tank, and mother liquor tank is delivered to vaporizer, and the underflow of tapered mother liquor tank is directly sent to grading machine and does the use of dilution mother liquor.
Compare with former flow process, the device that the utility model provides no longer needs special mother liquor pump to send dilution mother liquor toward grading machine, taper mother liquor tank underflow does not need to go overflow groove again, thereby overflow type pump does not need to move always, the auxiliary facilitys such as leaf filter also can not re-use, not only make process simplification convenient operation, and greatly saved energy consumption and investment;
2, the little mother liquor pump of former flow process 185KW, overflow type pump 110KW, the current consumption of leaf filter fresh feed pump 280KW pump is being approximately 2,500,000 yuan of left and right every year, facility investment is approximately 1,000,000 left and right, also have in addition the inconvenience bringing in operation, the grading machine that the utility model is directly delivered to decomposition using tapered mother liquor tank underflow uses as dilution mother liquor; The type selecting of underflow pump meets flow and the lift of grading machine dilution mother liquor; Cancel special mother liquor floating material recovery system, reduced investment, no longer need mother liquor floating material to reclaim this cover system.
3, the utility model adopts S1 taper mother liquor tank, S3 mother liquor tank, S5 vaporizer and S6 grading machine, the mechanism that solves underflow seston is: by underflow pump, underflow (together with seston) is sent to grading machine as dilution mother liquor, seston has entered not only decomposer (but also entered in decomposing system) through grading machine classification, and former flow process needs to reclaim this part seston by leaf filter.
4, in prior art, the material of grading machine separation is the aluminum hydroxide particles having decomposed, its Main Function is separated oarse-grained aluminum hydroxide particles exactly and is sent to square position filtration, roasting, and short grained aluminium hydroxide returns in decomposer and continues to use as crystal seed.
Accompanying drawing explanation
Fig. 1: process the device of taper mother liquor tank underflow and seston, wherein S1 is that taper mother liquor tank, S3 are that mother liquor tank, S5 are that vaporizer and S6 are grading machine;
Fig. 2: the device of existing processing taper mother liquor tank underflow and seston, wherein S1 is taper mother liquor tank, and S2 is leaf filter, and S3 is mother liquor tank, and S4 is overflow groove, and S5 is vaporizer, and S6 is grading machine.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Embodiment 1: a kind of device of processing taper mother liquor tank underflow and seston
As shown in Figure 1, wherein S1 is that taper mother liquor tank, S3 are that mother liquor tank, S5 are that vaporizer and S6 are grading machine, and wherein S1 is connected by underflow pump with S6, and S3 is connected with S5 by large mother liquor pump, and S6 connects square position and decomposer.
Wherein, during S6 classification, oarse-grained aluminum hydroxide particles is separated and is sent to square position filtration roasting; Short grained aluminium hydroxide returns in decomposer, continues to use as crystal seed.
Embodiment 2: the device of existing processing taper mother liquor tank underflow and seston
As shown in Figure 2, S1 taper mother liquor tank, S2 leaf filter, S3 mother liquor tank, S4 overflow groove, S5 vaporizer, S6 grading machine, S1 is connected by mother liquor floating material recovery pump with S2, and S1 is connected with S4 by underflow pump, and S3 is connected by large mother liquor pump with S5.
Experimental example 1:
The device that Xiaoyi Xingan Chemical Co., Ltd. is being used embodiment 1 to provide, remove leaf filter and auxiliary facility, with pump by underflow directly send to grading machine as dilution mother liquor, no longer include leaf filter operation, change the actions such as cloth, greatly saved artificial loss; Seston is reclaimed mother liquor and still also has the aluminum oxide of 1g/L left and right, is sent to vaporizer and not only causes alumina loss but also cause and scab to vaporizer; After being directly sent to grading machine, through a classification part, be sent to square position, a part enters decomposer and no longer causes alumina loss.
Above embodiment is only for illustrating the utility model; and be not limitation of the utility model; those of ordinary skill in the art; in the situation that not departing from spirit and scope of the present utility model; also can make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (2)
1. a device of processing taper mother liquor tank underflow and seston, by taper mother liquor tank (S1), mother liquor tank (S3), vaporizer (S5) and grading machine (S6), formed, wherein taper mother liquor tank (S1) is connected by underflow pump with grading machine (S6), mother liquor tank (S3) is connected with vaporizer (S5) by large mother liquor pump, and grading machine (S6) connects square position and decomposer.
2. device according to claim 1, is characterized in that, during grading machine (S6) classification, oarse-grained aluminum hydroxide particles is separated and is sent to square position filtration roasting; Short grained aluminium hydroxide returns in decomposer, continues to use as crystal seed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643012.7U CN203754438U (en) | 2013-10-17 | 2013-10-17 | Device for processing underflow and suspended matters of conical mother liquor tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643012.7U CN203754438U (en) | 2013-10-17 | 2013-10-17 | Device for processing underflow and suspended matters of conical mother liquor tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203754438U true CN203754438U (en) | 2014-08-06 |
Family
ID=51249737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320643012.7U Expired - Lifetime CN203754438U (en) | 2013-10-17 | 2013-10-17 | Device for processing underflow and suspended matters of conical mother liquor tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203754438U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186009A (en) * | 2016-07-15 | 2016-12-07 | 开曼铝业（三门峡）有限公司 | A kind of alumina decomposition system and alumina decomposition slot device intermediate temperature drop method |
| CN106186010A (en) * | 2016-07-15 | 2016-12-07 | 开曼铝业（三门峡）有限公司 | A kind of alumina decomposition system and alumina decomposition slot device intermediate temperature drop method |
| CN109678185A (en) * | 2018-12-18 | 2019-04-26 | 杭州科创有色金属研究有限公司 | A kind of devices and methods therefor for crude liquid refining in alumina producing |
| CN115612864A (en) * | 2022-11-10 | 2023-01-17 | 中铝矿业有限公司 | Process for reducing content of suspended matters in metal gallium adsorption mother liquor |
-
2013
- 2013-10-17 CN CN201320643012.7U patent/CN203754438U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186009A (en) * | 2016-07-15 | 2016-12-07 | 开曼铝业（三门峡）有限公司 | A kind of alumina decomposition system and alumina decomposition slot device intermediate temperature drop method |
| CN106186010A (en) * | 2016-07-15 | 2016-12-07 | 开曼铝业（三门峡）有限公司 | A kind of alumina decomposition system and alumina decomposition slot device intermediate temperature drop method |
| CN109678185A (en) * | 2018-12-18 | 2019-04-26 | 杭州科创有色金属研究有限公司 | A kind of devices and methods therefor for crude liquid refining in alumina producing |
| CN115612864A (en) * | 2022-11-10 | 2023-01-17 | 中铝矿业有限公司 | Process for reducing content of suspended matters in metal gallium adsorption mother liquor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |