CN110613963A - Multistage precipitation separation system for solid-liquid separation of phosphorized slag - Google Patents
Multistage precipitation separation system for solid-liquid separation of phosphorized slag Download PDFInfo
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- CN110613963A CN110613963A CN201911020425.8A CN201911020425A CN110613963A CN 110613963 A CN110613963 A CN 110613963A CN 201911020425 A CN201911020425 A CN 201911020425A CN 110613963 A CN110613963 A CN 110613963A
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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
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/245—Discharge mechanisms for the sediments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/10—Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a multistage sedimentation separation system for solid-liquid separation of phosphated slag, which comprises a reaction kettle, a main sedimentation tank, a tertiary secondary sedimentation system, a centrifugal solid-liquid separator, a liquid storage tank, a plurality of connecting pipelines and a plurality of delivery pumps, wherein the side edge of the reaction kettle is provided with the main sedimentation tank, the water inlet end of the main sedimentation tank is connected with the output end of the reaction kettle through the connecting pipeline, the delivery pump is arranged on the connecting pipeline between the reaction kettle and the main sedimentation tank, and the side edge of the main sedimentation tank is provided with the tertiary secondary sedimentation system. Has little harm to the environment and improves the utilization rate of the phosphorization slag.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of phosphated slag treatment, in particular to the technical field of solid-liquid separation of phosphated slag.
[ background of the invention ]
Phosphating is a common surface treatment technology and is widely applied to industries such as automobiles, chemical engineering, ships, aerospace, household appliances and the like. In the process of phosphating treatment, a phosphating slag precipitate is continuously generated along with the progress of a phosphating film forming reaction. The phosphated slag belongs to hazardous waste, is acidic in national hazardous waste records and mainly contains iron, zinc and phosphate radical; meanwhile, according to the type of the used phosphating solution, the phosphating solution also contains a certain amount of calcium, potassium, nickel and other ions. If the phosphorization slag is directly discharged into soil, substances such as phosphate in the phosphorization slag can generate soil acidification reaction or other reactions through weathering, rain and snow leaching and erosion of the runoff on the earth surface, and some trace metal substances can be accumulated in the soil. If the phosphorization slag enters rivers, lakes or oceans along with natural rainfall or surface runoff, the surface water is polluted, and the excessive phosphorus can cause water eutrophication; if the runoff permeates underground along the surface of the land, the groundwater can be polluted. Therefore, if the phosphorization slag is not treated and is discharged into the environment, serious pollution is caused to soil and water, but the existing separation equipment is not thorough in separation, solid residues can still be contained in the filtrate after solid-liquid separation, the phosphorization slag and a flocculating agent and other medicaments react too slowly, so that solid residues and the like can still be contained in the subsequent filtrate, and the phosphorization slag can be directly discharged out without treatment to pollute the environment.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a multistage precipitation separation system for solid-liquid separation of phosphated slag, which can improve the solid-liquid separation quality of phosphated slag and the solid-liquid separation efficiency of phosphated slag, and the phosphated slag in the liquid after solid-liquid separation has low content and little harm to the environment, and the utilization rate of the phosphated slag is improved.
In order to achieve the purpose, the invention provides a multistage sedimentation separation system for solid-liquid separation of phosphorized slag, which comprises a reaction kettle, a main sedimentation tank, a tertiary secondary sedimentation system, a centrifugal solid-liquid separator, a liquid storage tank, a plurality of connecting pipelines and a plurality of conveying pumps, wherein the side edge of the reaction kettle is provided with the main sedimentation tank, the water inlet end of the main sedimentation tank is connected with the output end of the reaction kettle through the connecting pipeline, the conveying pump is arranged on the connecting pipeline between the reaction kettle and the main sedimentation tank, the side edge of the main sedimentation tank is provided with the tertiary secondary sedimentation system, the liquid output end of the side edge of the main sedimentation tank is communicated with the input end of the tertiary secondary sedimentation system through the connecting pipeline, the conveying pump is arranged on the connecting pipeline between the main sedimentation tank and the tertiary secondary sedimentation system, the side edge of the tertiary secondary sedimentation system is provided with the liquid storage tank, and the input end of the liquid storage tank is communicated with the clarified liquid output, and the output ends of the sediments of the main sedimentation tank and the tertiary secondary sedimentation system are communicated with the input end of the centrifugal solid-liquid separator through connecting pipelines.
Preferably, the main sedimentation tank comprises an upper sedimentation tank, a lower sedimentation tank, an upper sedimentation tank liquid inlet, an upper sedimentation tank liquid outlet, a phosphorized slag outlet of the lower sedimentation tank, a sedimentation inclined baffle plate and an upper sedimentation tank cover, the upper end of the upper sedimentation tank is provided with the upper sedimentation tank cover which can be matched with the upper sedimentation tank, the upper sedimentation tank cover is detachably connected with the upper sedimentation tank, the lower end of the upper sedimentation tank is provided with the lower sedimentation tank, the lower end of the upper sedimentation tank is communicated with the lower sedimentation tank, the side edge of one side of the upper sedimentation tank is provided with the upper sedimentation tank liquid inlet, the other end of the upper sedimentation tank liquid inlet is communicated with the output end of the reaction kettle, one side of the upper sedimentation tank, which is far away from the upper sedimentation tank liquid inlet, is provided with the upper sedimentation tank liquid outlet, the other end of the upper sedimentation tank liquid outlet is communicated with the input end of the tertiary secondary sedimentation system, and the upper sedimentation tank is, the side of one side of the lower sedimentation tank is provided with a lower sedimentation tank phosphorization slag outlet, the other end of the lower sedimentation tank phosphorization slag outlet is communicated with the input end of the centrifugal solid-liquid separator, the bottom of the upper sedimentation tank is a downward convex pointed bottom, and the lowest end of the pointed bottom is provided with a communication port matched with the lower sedimentation tank.
As preferred, last sedimentation tank in be close to last sedimentation tank inlet department be equipped with can with last sedimentation tank inlet complex first baffle, the vertical setting of first baffle, first baffle upper end and last sedimentation tank lid fixed connection, first baffle lower extreme and last sedimentation tank bottom between be equipped with certain clearance, last sedimentation tank in be close to last sedimentation tank liquid outlet department be equipped with can with last sedimentation tank liquid outlet complex second baffle, the vertical setting of second baffle, second baffle lower extreme and last sedimentation tank bottom fixed connection, second baffle upper end and last sedimentation tank lid between be equipped with certain clearance, the second baffle on be close to the one side of last sedimentation tank liquid outlet be equipped with can with last sedimentation tank liquid outlet complex horizontal baffle, horizontal baffle locate last sedimentation tank lower extreme.
Preferably, the three-level secondary sedimentation system comprises a first vertical sedimentation tower, a second vertical sedimentation tower, a third vertical sedimentation tower, a total sediment output pipe, a sedimentation tower connecting pipe and a sediment output port, the upper end input end of the first vertical sedimentation tower is communicated with the liquid output end of the main sedimentation tank through a connecting pipeline, the first vertical settling tower and the second vertical settling tower, and the second vertical settling tower and the third vertical settling tower are communicated through settling tower connecting pipes, the lower ends of the first vertical settling tower, the second vertical settling tower and the third vertical settling tower are all provided with a sediment outlet, the lower end of the sediment output port is transversely provided with a total sediment output pipe, the sediment output ports are communicated with the total sediment output pipe, and the output end of the total sediment output pipe is communicated with the input end of the centrifugal solid-liquid separator.
Preferably, a dosing box is arranged on the side edge of the reaction kettle and communicated with the upper end of the reaction kettle.
Preferably, the upper end of the reaction kettle is provided with a material inlet.
The multistage precipitation separation system for solid-liquid separation of the phosphorization slag has the beneficial effects that: according to the invention, the main sedimentation tank and the tertiary secondary sedimentation system are arranged to carry out multiple sedimentation separation on the mixed liquid of the phosphated slag, so that the solid-liquid separation quality of the phosphated slag is improved, the possibility that solid residues and the like are still contained in subsequent filtrate due to the slow reaction of the phosphated slag and drugs such as flocculating agent and the like is prevented, the solid-liquid separation efficiency of the phosphated slag is improved, the content of the phosphated slag in the liquid after solid-liquid separation is low, the environmental harm is small, and the utilization rate of the phosphated slag is improved.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a multistage precipitation separation system for solid-liquid separation of phosphorized slag.
In the figure: 1-a reaction kettle, 2-a main sedimentation tank, 3-a tertiary secondary sedimentation system, 4-a centrifugal solid-liquid separator, 5-a liquid storage tank, 6-a connecting pipeline, 7-a delivery pump, 8-a dosing tank, 11-a material input port, 21-an upper sedimentation tank, 22-a lower sedimentation tank, 23-an upper sedimentation tank liquid inlet and 24-an upper sedimentation tank liquid outlet, 25-a phosphorization slag outlet of a lower sedimentation tank, 26-a sedimentation inclined baffle, 27-an upper sedimentation tank cover, 31-a first vertical sedimentation tower, 32-a second vertical sedimentation tower, 33-a third vertical sedimentation tower, 34-a total sediment output pipe, 35-a sedimentation tower connecting pipe, 36-a sediment output port, 211-a first baffle, 212-a second baffle and 216-a communication port.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1, the multistage sedimentation separation system for solid-liquid separation of phosphated residues comprises a reaction kettle 1, a main sedimentation tank 2, a tertiary secondary sedimentation system 3, a centrifugal solid-liquid separator 4, a liquid storage tank 5, a plurality of connecting pipelines 6 and a plurality of delivery pumps 7, wherein the main sedimentation tank 2 is arranged on the side edge of the reaction kettle 1, the water inlet end of the main sedimentation tank 2 is connected with the output end of the reaction kettle 1 through the connecting pipeline 6, the delivery pump 7 is arranged on the connecting pipeline 6 between the reaction kettle 1 and the main sedimentation tank 2, the tertiary secondary sedimentation system 3 is arranged on the side edge of the main sedimentation tank 2, the liquid output end on the side edge of the main sedimentation tank 2 is communicated with the input end of the tertiary secondary sedimentation system 3 through the connecting pipeline 6, the delivery pump 7 is arranged on the connecting pipeline 6 between the main sedimentation tank 2 and the tertiary secondary sedimentation system 3, the liquid storage tank 5 is arranged on the side edge of the tertiary secondary sedimentation system 3, the input end of the liquid storage tank 5 is communicated with the clarified liquid output end of the tertiary secondary sedimentation system 3 through a connecting pipeline 6, the sediment output ends of the main sedimentation tank 2 and the tertiary secondary sedimentation system 3 are communicated with the input end of the centrifugal solid-liquid separator 4 through the connecting pipeline 6, the main sedimentation tank 2 comprises an upper sedimentation tank 21, a lower sedimentation tank 22, an upper sedimentation tank liquid inlet 23, an upper sedimentation tank liquid outlet 24, a lower sedimentation tank phosphorization slag outlet 25, a sedimentation inclined baffle 26 and an upper sedimentation tank cover 27, the upper end of the upper sedimentation tank 21 is provided with the upper sedimentation tank cover 27 matched with the upper sedimentation tank 21, the upper sedimentation tank cover 27 is detachably connected with the upper sedimentation tank 21, the lower end of the upper sedimentation tank 21 is provided with the lower sedimentation tank 22, the lower end of the upper sedimentation tank 21 is communicated with the lower sedimentation tank 22, one side of the upper sedimentation tank 21 is provided with the upper sedimentation tank liquid inlet 23, the other end of the upper sedimentation tank liquid inlet 23 is communicated with the output end of the reaction kettle 1, one side of the upper sedimentation tank 21, which is far away from the upper sedimentation tank liquid inlet 23, is provided with an upper sedimentation tank liquid outlet 24, the other end of the upper sedimentation tank liquid outlet 24 is communicated with the input end of the tertiary sedimentation system 3, the upper sedimentation tank 21 is internally provided with a plurality of sedimentation inclined baffles 26, the side edge of one side of the lower sedimentation tank 22 is provided with a lower sedimentation tank phosphorization slag outlet 25, the other end of the lower sedimentation tank phosphorization slag outlet 25 is communicated with the input end of the centrifugal solid-liquid separator 4, the bottom of the upper sedimentation tank 21 is a downwards convex pointed bottom, the lowest end of the pointed bottom is provided with a communication port 216 which can be matched with the lower sedimentation tank 22, the position in the upper sedimentation tank 21, which is close to the upper sedimentation tank liquid inlet 23, is provided with a first baffle 211 which can be matched with the, the vertical setting of first baffle 211, first baffle 211 upper end and last sedimentation tank pond lid 27 fixed connection, first baffle 211 lower extreme and last sedimentation tank 21 bottom between be equipped with certain clearance, last sedimentation tank 21 in be close to last sedimentation tank liquid outlet 24 department be equipped with can with last sedimentation tank liquid outlet 24 complex second baffle 212, the vertical setting of second baffle 212, second baffle 212 lower extreme and last sedimentation tank 21 bottom fixed connection, second baffle 212 upper end and last sedimentation tank lid 27 between be equipped with certain clearance, second baffle 212 on be close to one side of last sedimentation tank liquid outlet 24 be equipped with can with last sedimentation tank liquid outlet 24 complex horizontal baffle 13, horizontal baffle 13 locate last sedimentation tank liquid outlet 24 lower extreme, tertiary inferior sedimentation system 3 include first vertical settling tower 31, second vertical settling tower 32, A third vertical precipitation tower 33, a total output pipe 34 of the precipitate, a connection pipe 35 of the precipitation tower and a precipitate output port 36, wherein the input end of the upper end of the first vertical precipitation tower 31 is communicated with the liquid output end of the main precipitation tank 2 through a connection pipe 6, the space between the first vertical precipitation tower 31 and the second vertical precipitation tower 32 and the space between the second vertical precipitation tower 32 and the third vertical precipitation tower 33 are communicated through the connection pipe 35 of the precipitation tower, the lower ends of the first vertical precipitation tower 31, the second vertical precipitation tower 32 and the third vertical precipitation tower 33 are all provided with the precipitate output port 36, the lower end of the precipitate output port 36 is transversely provided with the total output pipe 34 of the precipitate, the precipitate output port 36 is communicated with the total output pipe 34 of the precipitate, the output end of the total output pipe 34 of the precipitate is communicated with the input end of the centrifugal solid-liquid separator 4, the side of the reaction kettle 1 is provided with a dosing tank 8, the dosing tank 8 is communicated with the upper end of the reaction kettle 1, and a material input port 11 is arranged at the upper end of the reaction kettle 1.
The working process of the invention is as follows:
the invention relates to a multistage sedimentation separation system for solid-liquid separation of phosphorization slag, which guides phosphorization slag mixed liquid into a reaction kettle 1 in the working process, the medicine is introduced through the medicine adding box 8 to react with the mixed liquid of the phosphorization slag, the mixed liquid after the reaction is introduced into the main sedimentation tank 2, precipitating in a main sedimentation tank 2, discharging the precipitate through a phosphorization slag outlet 25 of a lower sedimentation tank, guiding the precipitate into a centrifugal solid-liquid separator 4 for centrifugal solid-liquid separation, guiding the liquid in the main sedimentation tank 2 into a tertiary sedimentation system 3 through an upper sedimentation tank liquid outlet 24, the third standing and precipitation are carried out through a first vertical precipitation tower 31, a second vertical precipitation tower 32 and a third vertical precipitation tower 33 of the third-stage secondary precipitation system 3, the precipitate is led into a total precipitate output pipe 34 through a precipitate output port 36, then the liquid is discharged into a centrifugal solid-liquid separator 4 for centrifugal solid-liquid separation, and the liquid precipitated by the tertiary precipitation system 3 is led into a liquid storage tank 5 for storage and standby.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (6)
1. The utility model provides a multistage sedimentation separation system for bonderizing sediment solid-liquid separation which characterized in that: comprises a reaction kettle (1), a main sedimentation tank (2), a tertiary secondary sedimentation system (3), a centrifugal solid-liquid separator (4), a liquid storage tank (5), a plurality of connecting pipelines (6) and a plurality of delivery pumps (7), wherein the side edge of the reaction kettle (1) is provided with the main sedimentation tank (2), the water inlet end of the main sedimentation tank (2) is connected with the output end of the reaction kettle (1) through the connecting pipeline (6), the connecting pipeline (6) between the reaction kettle (1) and the main sedimentation tank (2) is provided with the delivery pump (7), the side edge of the main sedimentation tank (2) is provided with the tertiary secondary sedimentation system (3), the liquid output end of the side edge of the main sedimentation tank (2) is communicated with the input end of the tertiary secondary sedimentation system (3) through the connecting pipeline (6), the connecting pipeline (6) between the main sedimentation tank (2) and the tertiary secondary sedimentation system (3) is provided with the delivery pumps (7), the side of the tertiary secondary sedimentation system (3) is provided with a liquid storage tank (5), the input end of the liquid storage tank (5) is communicated with the clarified liquid output end of the tertiary secondary sedimentation system (3) through a connecting pipeline (6), and the sediment output ends of the main sedimentation tank (2) and the tertiary secondary sedimentation system (3) are communicated with the input end of the centrifugal solid-liquid separator (4) through the connecting pipeline (6).
2. The multistage sedimentation separation system for solid-liquid separation of phosphated residue of claim 1, wherein: the main sedimentation tank (2) comprises an upper sedimentation tank (21), a lower sedimentation tank (22), an upper sedimentation tank inlet (23), an upper sedimentation tank liquid outlet (24), a lower sedimentation tank phosphorization slag outlet (25), a sedimentation inclined baffle (26) and an upper sedimentation tank cover (27), wherein the upper end of the upper sedimentation tank (21) is provided with the upper sedimentation tank cover (27) matched with the upper sedimentation tank, the upper sedimentation tank cover (27) is detachably connected with the upper sedimentation tank (21), the lower end of the upper sedimentation tank (21) is provided with the lower sedimentation tank (22), the lower end of the upper sedimentation tank (21) is communicated with the lower sedimentation tank (22), one side edge of the upper sedimentation tank (21) is provided with the upper sedimentation tank inlet (23), the other end of the upper sedimentation tank inlet (23) is communicated with the output end of the reaction kettle (1), one side of the upper sedimentation tank (21) far away from the upper sedimentation tank inlet (23) is provided with the upper sedimentation tank liquid outlet (24), go up the input intercommunication of sedimentation tank liquid outlet (24) other end and tertiary inferior sedimentation system (3), last sedimentation tank (21) in be equipped with a plurality of oblique baffles (26) that precipitate, sedimentation tank (22) one side limit be equipped with down sedimentation tank bonderizing sediment slag notch (25), sedimentation tank bonderizing sediment slag notch (25) other end and centrifugal solid-liquid separation machine's (4) input intercommunication down, last sedimentation tank (21) bottom be at the bottom of downward convex sharp, sharp bottom be equipped with can with sedimentation tank (22) complex intercommunication mouth (216).
3. The multistage sedimentation separation system for solid-liquid separation of phosphated residue of claim 2, wherein: go up sedimentation tank (21) in be close to last sedimentation tank inlet (23) department be equipped with can with last sedimentation tank inlet (23) complex first baffle (211), first baffle (211) vertical setting, first baffle (211) upper end and last sedimentation tank lid (27) fixed connection, first baffle (211) lower extreme and last sedimentation tank (21) bottom between be equipped with certain clearance, last sedimentation tank (21) in be close to last sedimentation tank outlet (24) department be equipped with can with last sedimentation tank outlet (24) complex second baffle (212), second baffle (212) vertical setting, second baffle (212) lower extreme and last sedimentation tank (21) bottom fixed connection, second baffle (212) upper end and last sedimentation tank lid (27) between be equipped with certain clearance, second baffle (212) on be close to one side of last sedimentation tank outlet (24) be equipped with can with last sedimentation tank outlet (24) complex The horizontal baffle (13), horizontal baffle (13) locate upper sedimentation tank liquid outlet (24) lower extreme.
4. The multistage sedimentation separation system for solid-liquid separation of phosphated residue of claim 1, wherein: the three-level secondary sedimentation system (3) comprises a first vertical sedimentation tower (31), a second vertical sedimentation tower (32), a third vertical sedimentation tower (33), a total sediment output pipe (34), a sedimentation tower connecting pipe (35) and a sediment output port (36), wherein the upper end input end of the first vertical sedimentation tower (31) is communicated with the liquid output end of the main sedimentation tank (2) through a connecting pipeline (6), the first vertical sedimentation tower (31) is communicated with the second vertical sedimentation tower (32), the second vertical sedimentation tower (32) is communicated with the third vertical sedimentation tower (33) through the sedimentation tower connecting pipe (35), the lower ends of the first vertical sedimentation tower (31), the second vertical sedimentation tower (32) and the third vertical sedimentation tower (33) are respectively provided with a sediment output port (36), the lower end of the sediment output port (36) is transversely provided with the total sediment output pipe (34), the sediment output ports (36) are communicated with a sediment total output pipe (34), and the output end of the sediment total output pipe (34) is communicated with the input end of the centrifugal solid-liquid separator (4).
5. The multistage sedimentation separation system for solid-liquid separation of phosphated residue of claim 1, wherein: a dosing box (8) is arranged on the side edge of the reaction kettle (1), and the dosing box (8) is communicated with the upper end of the reaction kettle (1).
6. The multistage sedimentation separation system for solid-liquid separation of phosphated residue of claim 1, wherein: the upper end of the reaction kettle (1) is provided with a material inlet (11).
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Cited By (1)
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CN112057912A (en) * | 2020-09-18 | 2020-12-11 | 金驰能源材料有限公司 | Double-row pipe vortex settling device |
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