CN106334350A - Settling tank for continuous separation of wet phosphoric acid solid content - Google Patents
Settling tank for continuous separation of wet phosphoric acid solid content Download PDFInfo
- Publication number
- CN106334350A CN106334350A CN201610653142.7A CN201610653142A CN106334350A CN 106334350 A CN106334350 A CN 106334350A CN 201610653142 A CN201610653142 A CN 201610653142A CN 106334350 A CN106334350 A CN 106334350A
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- Prior art keywords
- acid
- phosphoric acid
- solid content
- subsider
- cell body
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Classifications
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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
- B01D21/02—Settling tanks with single outlets for the separated liquid
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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
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- 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
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
- B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
-
- 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
- B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
-
- 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
-
- 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
- B01D21/2444—Discharge mechanisms for the classified liquid
-
- 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
- B01D21/245—Discharge mechanisms for the sediments
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/234—Purification; Stabilisation; Concentration
- C01B25/235—Clarification; Stabilisation to prevent post-precipitation of dissolved impurities
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a settling tank for continuous separation of wet phosphoric acid solid content, and belongs to the technical field of phosphoric acid production equipment. The settling tank includes a settling tank body and an upper cover; the settling tank body is provided with a mud scraper which can continuously operate; the settling tank body is externally provided with an acid discharge ring pipe; the acid discharge ring pipe communicates with the settling tank body through a plurality of overflow pipes; the acid discharge ring pipe communicates with a lower acid pipe pump through an acid discharge pipe; the lower acid pipe pump sends an acid to a finished product workshop; the bottom of the settling tank body is provided with a conical slag discharge port; the outlet end of the conical slag discharge port is provided with a slag discharge pipe and a plurality of cleaning valves; the slag discharge pipe communicates with a slag discharge pump. The settling tank can separate the solid content in dilute phosphoric acid, and also can separate the solid content in concentrated phosphoric acid; through structures of an acid feeding guide cylinder, the acid discharge ring pipe, the acid discharge pipe and the valves, continuous acid feeding, continuous precipitation of phosphoric acid and acid layer-by-layer continuous discharge are achieved, qualified dilute phosphorus acid or concentrated phosphoric acid with low solid content is obtained, and the production efficiency and the product quality are both improved.
Description
Technical field
The invention belongs to phosphoric acid production equipment technical field, it is related to a kind of dress reducing solid impurity content in phosphoric acid production
Put, especially relate to a kind of subsider being continuously separated phosphoric acid by wet process solid content.
Background technology
Phosphoric acid is a kind of important intermediate chemicals, and industrialized phosphoric acid production method mainly has two big class, and a class is
Full-boiled process, gained phosphoric acid claims thermal phosphoric acid, and because its quality is higher, impurity content is few, mainly for the production of phosphate, does the raw material of industry
Or additive；Another kind of for wet method, gained phosphoric acid claims phosphoric acid by wet process, because it contains the plurality of impurities such as ferrum, aluminum, magnesium, is generally used for
Produce fertilizer.
Feature with sulfuric acid decomposition phosphorus ore significant reaction be decompose after product in addition to phosphoric acid solution, also generate two simultaneously
H 2 O calcium sulphate, calcium sulphate dihydrate is a kind of solid of dissolubility very little although can be realized by simple liquid, solid separative element
Phosphoric acid is separated with calcium sulphate dihydrate, but when phosphate ore pulp and sulphuric acid are reacted in phosphoric acid extraction groove, because technology controlling and process causes
The also tiny in a large number gypsum crystal of calcium sulphate dihydrate, slip liquid-solid ratio is about 1.8～2.5:1, is isolated by filtration to obtain phosphoric acid
Concentration is 24-27%, and in filter process, many tiny ardealite crystal grain and the impurity being dissolved into acid can pass through cake layer, enter
Enter in phosphoric acid,diluted, the solid content of phosphoric acid,diluted also has 2% about, and solid content is still too high；Phosphoric acid,diluted is after being deposited to less than 1%
Delivering to concentration systems and carrying out concentration becomes strong phosphoric acid, and the strong phosphoric acid concentration after concentration is more than 46%, and solid content is 4-8%.Because containing
Admittedly amount height can have a strong impact on phosphoric acid quality and phosphate fertilizer product quality, therefore need to carry out settlement treatment to phosphoric acid,diluted and strong phosphoric acid, make
The solid content of phosphoric acid,diluted is less than 1%, and the solid content of strong phosphoric acid is less than 2%, is then sent through production of phosphate fertilizer system, produce MAP and
Diammonium phosphate (DAP).
During sulfuric acid decomposition phosphorus ore extractive reaction, temperature has 80-90 DEG C, has part acid non-soluble substance can be dissolved in acid
In, when temperature reduces, can parse, crystallize out in solid form, enter concentration systems, the raising of phosphoric acid concentration, dissolving
Part acid non-soluble substance in acid, is also precipitated out in entrance concentrated acid with solid crystal.Solid due to containing ardealite etc. in phosphoric acid
Body impurity, can affect phosphate fertilizer product quality it is necessary to remove impurity therein in phosphoric acid,diluted and strong phosphoric acid production process it is ensured that producing
Quality.
There are mechanical Filtration (as surface filtration), gravitational settling falling temperature method during removing phosphoric acid impurity.Mechanical filter
Method has partly ultra-fine ardealite crystal and the acid non-soluble substance being dissolved in acid also can enter in filtration phosphoric acid in filter process, shadow
Ring subsequent processing product quality.Gravitational settling falling temperature method is a kind of reasonable method of impurity that separates at present.
But existing gravitational settling heat sink has the place of some inconveniences, if do not enabled series classification sedimentation,
Acid can not continuously be gone out while entering acid；Slag after sedimentation can not be completely exhausted out, and easy blocking, cause mud scraper locking, need
Shut down and heavy acid device is cleared up, affect production efficiency；Only one of which acid mouth, solid content is wayward；Container is hardly
Can lower the temperature, the acid non-soluble substance being dissolved in acid cannot efficiently separate.
Content of the invention
In order to solve the above problems, the invention provides a kind of subsider being continuously separated phosphoric acid by wet process solid content, pass through
Gravitational settling and the acid cooling in infall process parse part acid non-soluble substance and precipitate, reduce solid content in acid it is ensured that
The quality of phosphate fertilizer product, it is ensured that being normally carried out of phosphate fertilizer technique productions, makes production be in slave mode, prevents product quality
Accident.
The present invention is achieved by following technical solution.
A kind of subsider being continuously separated phosphoric acid by wet process solid content, including sedimentation cell body and Shang Gai, in described sedimentation cell body
It is provided with the mud scraper of continuously-running, described subsider is provided with acid discharge endless tube in vitro, acid discharge endless tube passes through some overflow pipes and sinks
Fall cell body connection, acid discharge endless tube is connected with lower acid tube pump by ACID, and acid is delivered to finishing room by lower acid tube pump；Described
Sedimentation cell body bottom is provided with taper slag-drip opening, and the described taper slag-drip opening port of export is provided with scum pipe and some cleaning valves, deslagging
Pipe is connected with deslagging pump.
Described subsider body wall is provided with the different valve of some height, and each valve two ends are by ACID with sedimentation cell body even
Logical.
Described mud scraper includes scraper plate, power transmission shaft and pull bar, and scraper plate is fixed on power transmission shaft lower end, power transmission shaft upper end with scrape mud
Machine actuating device connects, and arranges pull bar between scraper plate and power transmission shaft；Power transmission shaft bottom is provided with agitating type discharger, agitating type
Discharger is arranged in the taper slag-drip opening of sedimentation cell body bottom, rotates together with power transmission shaft.
Cover on described and be provided with into sour guide shell, enter sour guide shell and reach subsider bottom, enter sour guide shell lower port position
Above mud scraper pull bar；Enter to be provided with acid inlet tube in sour guide shell and phosphoric acid purification flocculant adds pipe, acid inlet tube and phosphoric acid net
Changing flocculant adds the port of export of pipe to there is difference in height.
Described enter sour guide shell lower port be located above mud scraper pull bar at 500mm.
Described overflow pipe at least 4, and be circumferentially evenly arranged.
Described sedimentation cell body is steel body structure, and liner rubber carries out anti-corrosion, after the lining rubber of bottom, then in rubber surface lining stone
Black plate, prevents from washing away.
Low in the middle of the scraper plate of described mud scraper, both sides are high, and scraper plate and bottom land angle are 5 degree, be adjusted by pull bar and
Stress is strengthened.
Described cleaning valve is located on the conical surface of taper slag-drip opening.
The invention has the beneficial effects as follows:
A kind of subsider being continuously separated phosphoric acid by wet process solid content of the present invention, in separable phosphoric acid,diluted containing solid
Amount, the also solid content in separable strong phosphoric acid, by entering sour guide shell, acid discharge endless tube, ACID and valve mechanism it is achieved that connecting
Continue into acid, continuous precipitation phosphoric acid, successively continuously go out acid, obtain the few qualified phosphoric acid,diluted of solid content or strong phosphoric acid, production efficiency and
Product quality is all improved；And there are multiple acid mouths can go out acid simultaneously simultaneously, accelerate out the speed of acid, and acid discharge endless tube
It is located at compared with high level, and can realize being classified out acid by controlling longitudinal valve, make in liquid acid according to the solid content in acid
Solid content is effectively controlled.
Meanwhile, sour guide shell setting phosphoric acid feed pipe and phosphoric acid purification flocculant feed pipe are being entered, two tubes form one
Determine the discrepancy in elevation, and tube outlet angle is relatively, can achieve that acid is pre-mixed with purifying flocculant.
Mud scraper is formed an angle with bottom shape, and bottom surface utilizes slag to form certain slope, in can scraping the slag by cell wall
Heart cylinder position, achievable continuous discharging slag.
By using agitating type discharger, adding scum pipe and clearing up the design of valve so that being difficult in taper slag-drip opening
Form precipitum, even if forming a small amount of precipitum, also can be cleared up in time by clearing up valve, solid slag is discharged in time,
It is difficult to result in blockage it is ensured that mud scraper continuous and steady operation, it is to avoid shut down cleaning, ensured production efficiency.
Sedimentation cell body container good cooling effect, acid enters fast cooling after container, is dissolved in acid non-soluble substance in acid quickly
Separate out, precipitate rapidly in the presence of flocculant, efficiently separated.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the arrangement schematic diagram of acid discharge endless tube and mud scraper in the present invention.
In figure: 1- settles cell body, 101- taper slag-drip opening, 2- supporting leg, 3- deslagging pump, 4- acid discharge endless tube, and 5- covers, and 6- enters
Sour guide shell, 7- acid inlet tube, 8- phosphoric acid purification flocculant adds pipe, 9- ACID, 10- mud scraper, 1001- scraper plate, and 1002- passes
Moving axis, 1003- pull bar, 1004- agitating type discharger, acid tube pump under 11-, 12- scum pipe, 13- clears up valve, 14- overflow
Pipe, 15- valve, 16- mud scraper driving means, 17- centre bore, 18- top board.
Specific embodiment
Further describe technical scheme below in conjunction with the accompanying drawings, but claimed scope is not limited to institute
State.
As shown in Figure 1 and Figure 2, a kind of subsider being continuously separated phosphoric acid by wet process solid content of the present invention, including sedimentation
Cell body 1 and upper lid 5, are provided with the mud scraper 10 of continuously-running in described sedimentation cell body 1, described sedimentation cell body 1 is externally provided with acid discharge
Endless tube 4, acid discharge endless tube 4 is passed through some overflow pipes 14 and is connected with sedimentation cell body 1, and acid discharge endless tube 4 is passed through ACID 9 and used with lower acid tube
Pump 11 connects, and acid is delivered to finishing room by lower acid tube pump 11；Described sedimentation cell body 1 bottom is provided with taper slag-drip opening 101, described
Taper slag-drip opening 101 port of export is provided with scum pipe 12 and some cleaning valves 13, and scum pipe 12 is connected with deslagging pump 3.
Described sedimentation cell body 1 wall is provided with the different valve of some height 15, and each valve 15 two ends by ACID 9 and settle
Cell body 1 connects.Valve 15 can be opened from top to bottom when needing clear groove and successively be put acid it is ensured that the solid content of phosphoric acid is minimum,
Realize step emission.The quantity of described valve 15 is 4 groups.
Described mud scraper 10 includes scraper plate 1001, power transmission shaft 1002 and pull bar 1003, and scraper plate 1001 is fixed on power transmission shaft
1002 lower ends, power transmission shaft 1002 upper end passes through the centre bore 17 of upper lid 5 to be connected with mud scraper driving means 16, and driving means 16 are solid
It is scheduled on the top board 18 being supported by some supporting legs 2, pull bar 1003 is set between scraper plate 1001 and power transmission shaft 1002；Power transmission shaft
1002 bottoms are provided with agitating type discharger 1004, and agitating type discharger 1004 is arranged on the taper deslagging of sedimentation cell body 1 bottom
In mouth 101.
Described upper lid 5 is provided with into sour guide shell 6, enters sour guide shell 6 and reaches subsider bottom, enters sour guide shell 6 lower end
Mouth is located above mud scraper 10 pull bar 1003；Enter to be provided with acid inlet tube 7 in sour guide shell 6 and phosphoric acid purification flocculant adds pipe 8, enter
Acid tube 7 and phosphoric acid purification flocculant add the port of export of pipe 8 to there is difference in height, and tube outlet angle relatively, can achieve sour and net
Change flocculant to be pre-mixed.
Described sedimentation cell body 1 is cylinder, a diameter of 14-25 rice.
Described enter sour guide shell 6 lower port be located at the 500mm of mud scraper 10 pull bar 18 top.
Described overflow pipe 14 at least 4, and be circumferentially evenly arranged.
Described sedimentation cell body 1 is steel body structure, and liner rubber carries out anti-corrosion, after the lining rubber of bottom, then in rubber surface lining
Graphite cake, prevents from washing away.
Embodiment
During the work of this device, from the next phosphoric acid,diluted in phosphoric acid workshop or strong phosphoric acid from the acid inlet tube 7 entering installation sour guide shell 6
Enter in sour guide shell 6, the solid content of sedimentation cell body 1 bottom is higher than top by gravitational settling effect, simultaneously net from phosphoric acid
Changing flocculant adds pipe 8 to add flocculant polyacrylamide, and the phosphoric acid of addition utilizes acid inlet tube 7 to add with phosphoric acid purification flocculant
Entering in sour guide shell 6 to be sufficiently mixed, mixed acid carries out weight by entering sour guide shell 6 and entering sedimentation cell body 1 to the discrepancy in elevation of pipe 8
Power settles.Entering sour guide shell 6 is 316l rustless steel, will serve as a contrast rubber in the part entering sour guide shell 6 and exposing acid solution face, prevents fluorine rotten
Erosion.
Due to adding flocculant, the solid in acid can be made to condense and to grow up, be sunk to sedimentation cell body 1 bottom by action of gravity,
By mud scraper 10, ardealite solid is scraped in the taper slag-drip opening 101 at sedimentation cell body 1 middle part, then pass through agitating type discharger
1004 and deslagging pump 3 be extracted into next device.
Low in the middle of the scraper plate 1001 of mud scraper 10, both sides are high, and scraper plate 1001 and bottom land angle are 5 degree, by pull bar 1003
It is adjusted strengthening with stress, when mud scraper 10 runs, sedimentation cell body 1 bottom forms necessarily domatic, by ardealite solid content
Scrape from sedimentation cell body 1 cell wall and carry out deslagging at tapered centre slag-drip opening 101.
Acid clearly after sedimentation rests in sedimentation cell body 1, is uniformly distributed by 4 of arrangement on sedimentation cell body 1 cell wall
Overflow pipe 14 enter in acid discharge endless tube 4, then time acid tube pump 11 is entered by the ACID 9 that connect with acid discharge endless tube 4, passes through
Lower acid tube pump 11 is transported to finished product production of phosphate fertilizer unit.When needing clear groove, valve 15 can be opened from top to bottom successively and carry out
Successively put acid it is ensured that the solid content of phosphoric acid is minimum, realize step emission.
Sedimentation cell body 1 be steel body structure, liner rubber carry out anti-corrosion, bottom lining rubber after, graphite cake also to be served as a contrast, prevent rush
Brush, damages rubber and cell body.Due to settling a diameter of 14-25 rice of cell body 1, steel body structure and easy heat radiation, 80 DEG C about high temperature phosphorous
After acid enters sedimentation cell body 1, temperature can be reduced to 40 DEG C, and sour temperature reduces, and the acid non-soluble substance being dissolved in acid reduces because of temperature
And separate out, form solid crystal in the presence of flocculant, be deposited to bottom, discharge from taper slag-drip opening 101.
When needing to clear up taper slag-drip opening 101, the cleaning valve 13 on taper slag-drip opening 101 conical surface can be opened, that is,
Residual mixture in taper slag-drip opening 101 can be cleared up.
The technical program is to continuously settle to the phosphoric acid,diluted or strong phosphoric acid having solid content, simultaneously in infall process
Middle reduction acid temperature, quickly parses precipitate；And settle after clear acid, again can by acid discharge endless tube 4, ACID 9 and
The valve 15 that can open successively from high to low, realizes successively releasing, finally realizes continuous solid-liquid separation.
Claims (9)
1. a kind of subsider being continuously separated phosphoric acid by wet process solid content, including sedimentation cell body (1) and upper lid (5), described subsider
Be provided with the mud scraper (10) of continuously-running in body (1) it is characterised in that: described sedimentation cell body (1) be externally provided with acid discharge endless tube
(4), acid discharge endless tube (4) is passed through some overflow pipes (14) and connect with sedimentation cell body (1), acid discharge endless tube (4) by ACID (9) and
Lower acid tube is connected with pump (11), and acid is delivered to finishing room by lower acid tube pump (11)；Described sedimentation cell body (1) bottom is provided with taper
Slag-drip opening (101), described taper slag-drip opening (101) port of export is provided with scum pipe (12) and some cleanings valve (13), scum pipe
(12) connect with deslagging pump (3).
2. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: described heavy
Fall cell body (1) wall is provided with the different valves of some height (15), and each valve (15) two ends by ACID (9) and settle cell body
(1) connect.
3. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: described scrape
Mud machine (10) includes scraper plate (1001), power transmission shaft (1002) and pull bar (1003), and scraper plate (1001) is fixed on power transmission shaft (1002)
Lower end, power transmission shaft (1002) upper end is connected with mud scraper driving means (16), between scraper plate (1001) and power transmission shaft (1002)
Setting pull bar (1003)；Power transmission shaft (1002) bottom is provided with agitating type discharger (1004), and agitating type discharger (1004) is pacified
It is contained in the taper slag-drip opening (101) of sedimentation cell body (1) bottom.
4. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: on described
Lid (5) is provided with into sour guide shell (6), enters sour guide shell (6) and reaches subsider bottom, enters sour guide shell (6) lower port and be located at
Above mud scraper (10) pull bar (1003)；Enter to be provided with acid inlet tube (7) in sour guide shell (6) and phosphoric acid purification flocculant adds pipe
(8), acid inlet tube (7) and phosphoric acid purification flocculant add the port of export of pipe (8) to there is difference in height.
5. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: described enter
Sour guide shell (6) lower port is located at 500mm above mud scraper (10) pull bar (18).
6. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: described overflow
Flow tube (14) at least 4, and be circumferentially evenly arranged.
7. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: described heavy
Fall cell body (1) be steel body structure, liner rubber carry out anti-corrosion, bottom lining rubber after, then rubber surface serve as a contrast graphite cake, prevent rush
Brush.
8. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: described scrape
Low in the middle of the scraper plate (1001) of mud machine (10), both sides are high, and scraper plate (1001) and bottom land angle are 5 degree, are entered by pull bar (1003)
Row is adjusted and stress is strengthened.
9. a kind of subsider being continuously separated phosphoric acid by wet process solid content according to claim 1 it is characterised in that: described clear
Reason valve (13) is located on the conical surface of taper slag-drip opening (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610653142.7A CN106334350B (en) | 2016-08-11 | 2016-08-11 | A kind of subsider of continuous separation phosphoric acid by wet process solid content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610653142.7A CN106334350B (en) | 2016-08-11 | 2016-08-11 | A kind of subsider of continuous separation phosphoric acid by wet process solid content |
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| Publication Number | Publication Date |
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| CN106334350A true CN106334350A (en) | 2017-01-18 |
| CN106334350B CN106334350B (en) | 2018-11-13 |
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ID=57825013
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610653142.7A Expired - Fee Related CN106334350B (en) | 2016-08-11 | 2016-08-11 | A kind of subsider of continuous separation phosphoric acid by wet process solid content |
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Cited By (4)
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| CN109107269A (en) * | 2018-09-27 | 2019-01-01 | 南京金陵化工厂有限责任公司 | A kind of compound stabilizer production spun down slot |
| CN110292796A (en) * | 2019-07-15 | 2019-10-01 | 长沙矿山研究院有限责任公司 | A kind of concentrator and dense method |
| CN112619212A (en) * | 2020-11-19 | 2021-04-09 | 中国三峡建设管理有限公司 | Adjustable water outlet device for sandstone wastewater radial flow sedimentation tank and application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110292796A (en) * | 2019-07-15 | 2019-10-01 | 长沙矿山研究院有限责任公司 | A kind of concentrator and dense method |
| CN112619212A (en) * | 2020-11-19 | 2021-04-09 | 中国三峡建设管理有限公司 | Adjustable water outlet device for sandstone wastewater radial flow sedimentation tank and application method |
| CN113018971A (en) * | 2021-03-03 | 2021-06-25 | 江西铜博科技有限公司 | Filtration equipment for copper sulfate solution |
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