CN115286167B - Circulating water treatment system for steel mill - Google Patents
Circulating water treatment system for steel mill Download PDFInfo
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- CN115286167B CN115286167B CN202210975970.8A CN202210975970A CN115286167B CN 115286167 B CN115286167 B CN 115286167B CN 202210975970 A CN202210975970 A CN 202210975970A CN 115286167 B CN115286167 B CN 115286167B
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- slag
- disc
- centrifugal
- sludge
- movable
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
- C02F1/482—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The invention discloses a steel mill circulating water treatment system which comprises a centrifugal hopper, a magnetization box and an organic matter treatment box which are sequentially communicated, wherein a fixed disc and a movable disc which are coaxially arranged with the centrifugal hopper are arranged at the bottom of the centrifugal hopper, the fixed disc is fixedly connected with the centrifugal hopper, the movable disc is coaxially and rotatably connected with the fixed disc, a slag spreading channel is formed between the movable disc and the fixed disc, slag washing spray rings are arranged outside the fixed disc and the movable disc, a water collecting groove is arranged below the slag washing spray rings, and a slag collecting disc is also arranged outside the slag washing spray rings.
Description
Technical Field
The invention relates to the technical field of steel mill water treatment, in particular to a steel mill circulating water treatment system.
Background
The steel mill sewage has the following characteristics that (1) suspended matters are high, and suspended solids have high specific gravity. Some raw water is not high in suspended matters, but solid particles with high concentration and larger specific gravity are easy to form after neutralization treatment and lime softening treatment, so that suspended particles are easy to precipitate to form sludge with larger specific gravity; (2) oil and organic matter. The wastewater of continuous casting, hot rolling, cold rolling and the like contains oil, and the oil is usually combined with suspended particles in the water through coagulation to form flocs which are removed in a sedimentation tank. In the prior art, a plurality of steel plants adopt a different-direction flow inclined tube (inclined plate) sedimentation technology to treat converter gas washing water, continuous casting secondary cooling water, hot rolling turbid circulating water, cold rolling wastewater, comprehensive wastewater of the whole plant and the like. But the sedimentation speed is slow, the occupied space is large, the mud discharging pipe at the bottom of the sedimentation tank is easy to be blocked, and the produced mud slag also contains residual harmful organic matters, so that the direct discharge is not beneficial to environmental protection.
Disclosure of Invention
The invention aims to solve the problems of the prior art that the sewage of a steel mill is treated by adopting an anisotropic flow inclined tube (inclined plate) sedimentation technology, and provides a circulating water treatment system of the steel mill, which is used for carrying out the processes of magnetization, coagulation, centrifugal separation and the like on the sewage to carry out the recycling treatment on the sewage, and simultaneously keeping the residual of organic matters in discharged granular waste to be less and ensuring safer discharge.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the steel mill circulating water treatment system comprises a centrifugal hopper, a magnetizing box and an organic matter treatment box which are sequentially communicated.
Specifically, the centrifugal hopper is conical and is provided with a high-pressure pump, the water inlet direction of the feeding pipe is tangential to the inner wall of the centrifugal hopper, sewage enters the centrifugal hopper to perform centrifugal rotation, the mud residue of solid particles in the sewage is large in mass, the wall sticking phenomenon is generated in the centrifugal hopper, and under the action of gravity, the mud residue enters the outlet of the bottom of the centrifugal hopper along the inner wall of the centrifugal hopper. The top of centrifugal bucket sets up the drain pipe, and the water after the processing is discharged from the drain pipe, and the drain pipe communicates with the water inlet end of magnetization case, and the water outlet end of magnetization case communicates with the water inlet end of organic matter processing case.
Preferably, the bottom of the centrifugal hopper is provided with a separation plate, the separation plate is a circular plate coaxially arranged with the centrifugal hopper, a sludge channel is arranged between the separation plate and the hopper wall of the centrifugal hopper, and the separation plate can play a role in preventing sludge from rising.
Further, the bottom of the centrifugal hopper is provided with a fixed disc and a movable disc which are coaxially arranged with the centrifugal hopper, the fixed disc is fixedly connected with the centrifugal hopper, the middle part of the fixed disc is provided with a through hole communicated with the outlet of the bottom of the centrifugal hopper, the movable disc is rotatably connected with the coaxial center of the fixed disc, and a slag spreading channel is formed between the movable disc and the fixed disc. The frame sets up the rotatory motor of drive movable disk, and movable disk is rotatory relative to the fixed disk, and the mud sediment of piling up in the through-hole in fixed disk middle part is carried into the exhibition sediment passageway between movable disk and the fixed disk, and the mud sediment is ground into slice mud sediment in exhibition sediment passageway to leave at the edge of movable disk and fixed disk.
In order to keep enough kinetic energy of the sludge when the sludge is discharged from the sludge spreading channel, an accelerating groove is formed in the edge of the fixed disc opposite to the movable disc surface, the bottom surface edge of the fixed disc is inclined upwards by the accelerating groove, when the sludge reaches the accelerating groove, the centrifugal force of the movable disc to the sludge can play a maximum role because of no friction force of the bottom surface of the fixed disc to the sludge, so that the sludge is thrown out and has a certain initial speed V0.
Preferably, the centrifugal hopper is provided with a slag induction piece below the isolation plate, and the slag induction piece is separated from the bottom of the through hole in the middle of the fixed disc by a distance. The slag induction piece is used for inducing whether mud slag is accumulated in the through holes in the middle of the fixed disc. When the mud residue is piled up in the through hole in the middle of the fixed disc, the movable disc starts to rotate, and the mud residue is brought into the residue spreading channel between the movable disc and the fixed disc.
Further, the extension rod vertical to the top surface of the movable plate is arranged in the middle of the top surface of the movable plate, the extension rod penetrates through the through hole in the middle of the fixed plate to be fixedly connected with the isolation plate, a sailboard is arranged in the through hole in the middle of the fixed plate, the sailboard can rotate along with the movable plate, mud residues in the through hole in the middle of the fixed plate are attached to the inner wall of the through hole in the middle of the fixed plate, mud residue layers are attached to the inner wall of the through hole in the middle of the fixed plate and the inlet of the residue spreading channel, and the liquid in the residue spreading channel and the centrifugal hopper are isolated, so that the residue spreading channel is ensured to be only used for solid mud residue treatment.
Further, the outside of fixed disk and movable disk sets up washes the sediment and spouts the ring, it spouts the below of ring to wash the sediment and set up the water collecting vat, wash the passageway between sediment and spout ring and the water collecting vat and the exhibition sediment passageway intercommunication between fixed disk and the movable disk. The sheet sludge is discharged from the sludge spreading channel and then passes through the sludge washing spray ring, the sludge washing spray ring can spray clean water to wash the sheet sludge, organic matters remained on the sludge are washed again, and the washed water is collected by the water collecting tank.
The outside of the slag washing spray ring is also provided with a slag collecting disc, and in the invention, the speed V0 of leaving the sludge from the slag spreading channel and the speed V1 of spraying water flow from the slag washing spray ring meet the following conditions: when the sand slag passes through the slag washing water flow, the sand slag is not contacted with the water collecting tank and directly enters the slag collecting tray.
Preferably, an elastic support piece in the vertical direction is arranged between the movable disc and the frame, the bottom of the elastic support piece is fixedly connected with the frame, the upper part of the elastic support piece is fixedly connected with a rotary plate, and the rotary plate is rotatably connected with the bottom of the movable disc. The elastic support piece can apply pressure close to the fixed disc to the movable disc, so that the movable disc can shake sludge properly in the sludge spreading channel, and sand and sludge can be crushed into sheets more easily.
Preferably, the movable tray is connected with the water collecting tank through a synchronous bracket, the synchronous bracket is rotatably connected with the movable tray, the synchronous bracket can keep the water collecting tank and the movable tray to synchronously move, sand residues can be ensured to cross the water collecting tank after passing through the slag washing spray ring, and the sand residues smoothly enter the slag collecting tray.
Preferably, the bottom of the water collecting tank is provided with a groove, the groove is communicated with the drain pipe through a return pipe, and the return pipe is provided with a water pump.
Preferably, the organic matter treating tank includes a mixing chamber in an upper part, a rotating chamber in a lower part, and a stirring rod communicating the mixing chamber and the rotating chamber. The upper portion of mixing chamber sets up the material feeding pipe, and the material feeding pipe is used for throwing in the flocculating agent, and the puddler is used for evenly stirring the inside sewage of mixing chamber and flocculating agent.
Further, the puddler is located the bottom of organic matter treatment incasement portion and sets up the inlet opening, rotatory indoor inside sets up the cartridge filter, the bottom of puddler extends to the inside of cartridge filter, rotatory room sets up the outlet pipe in the outside of cartridge filter. The stirring rod can guide the water in the mixing chamber into the rotating chamber through the water inlet hole.
The mixing chamber and the puddler swivelling joint of this department, mixing chamber bottom set up the rotating electrical machines that is used for driving the puddler and rotate, and rotating chamber and puddler fixed connection, puddler can drive the rotating chamber and rotate, carries out centrifugal separation, and the cartridge filter blocks the large granule thing in the sewage inside the cartridge filter, and water passes through the cartridge filter and gets into the outside of cartridge filter, goes out from the outlet pipe, cyclic utilization.
Preferably, a fixing frame is arranged at the bottom of the mixing chamber, and the fixing frame is rotationally connected with the rotating chamber and used for stably rotating the rotating chamber.
Further, at least one pair of magnetic poles are arranged on the magnetizing box, a magnetic field is formed between the magnetic poles, and sewage is magnetized between the magnetic poles.
The beneficial effects of the invention are as follows: the steel mill circulating water treatment system removes large-particle sludge by carrying out cyclone separation on sewage, and then carries out organic matter treatment to obtain recyclable water. In the sludge removal process, the circulating water treatment system performs sheet treatment and cleaning on the sludge, so that the organic matter residue can be kept less, and the discharge is safer.
Drawings
FIG. 1 is a schematic diagram of a steel mill circulating water treatment system;
FIG. 2 is a schematic diagram of the structure of a movable plate of a circulating water treatment system of a steel mill;
fig. 3 is a schematic top view of a steel mill circulating water treatment system fixed disc.
In the figure: 1. a centrifugal hopper; 2. a magnetizing box; 3. an organic matter treatment tank; 4. a partition plate; 5. a fixed plate; 6. a movable plate; 7. washing slag spraying rings; 8. a water collection tank; 9. an elastic support; 10. a synchronous support; 11. a motor; 12. a slag collection tray; 13. a slag discharge pipe; 14. a return pipe; 15. a drain pipe; 16. accelerating the groove; 17. a slag induction member; 31. a feeding pipe; 32. a stirring rod; 33. a rotating chamber; 34. a filter cartridge; 35. a water outlet pipe; 36. a fixing frame; 61. an extension rod; 62. a windsurfing board; 81. a groove; 91. a rotating plate; 321. and a water inlet hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1, the circulating water treatment system of the steel mill comprises a centrifugal hopper 1, a magnetizing box 2 and an organic matter treatment box 3 which are sequentially communicated.
Specifically, the toper fill form of centrifugal fill 1, the inlet pipe of centrifugal fill 1 sets up the high-pressure pump, and the inlet direction of inlet pipe is tangent with the inner wall of centrifugal fill 1, and inside sewage entering centrifugal fill 1 is centrifugal rotatory, because the mud sediment quality of solid particle is great in the sewage, produces the wall phenomenon in centrifugal fill 1 inside, and under the effect of gravity, the export of the mud sediment entering centrifugal fill 1 bottom along the inner wall of centrifugal fill 1. The top of the centrifugal hopper 1 is provided with a drain pipe 15, the treated water is discharged from the drain pipe 15, the drain pipe 15 is communicated with the water inlet end of the magnetizing box 2, and the water outlet end of the magnetizing box 2 is communicated with the water inlet end of the organic matter treatment box 3.
In this embodiment, the bottom of centrifugal bucket 1 sets up division board 4, division board 4 be with the coaxial circular plate that sets up of centrifugal bucket 1, be the mud sediment passageway between division board 4 and the bucket wall of centrifugal bucket 1, division board 4 can play the effect that prevents the mud sediment and gush up.
Referring to fig. 2, a fixed disc 5 and a movable disc 6 are arranged at the bottom of the centrifugal bucket 1 and are coaxially arranged with the centrifugal bucket 1, the fixed disc 5 is fixedly connected with the centrifugal bucket 1, a through hole communicated with an outlet at the bottom of the centrifugal bucket 1 is arranged in the middle of the fixed disc 5, the movable disc 6 is rotatably connected with the fixed disc 5 coaxially, and a slag spreading channel is formed between the movable disc 6 and the fixed disc 5. The frame sets up the rotatory motor 11 of drive movable dish 6, and movable dish 6 is rotatory relative to fixed disk 5, and the mud sediment of piling up in fixed disk 5 middle part through-hole is brought into the exhibition sediment passageway between movable dish 6 and the fixed disk 5, and the mud sediment is ground into slice mud sediment in exhibition sediment passageway to leave at the edge of movable dish 6 and fixed disk 5.
In order to keep enough kinetic energy of the sludge when the sludge outlet channel is formed, an accelerating groove 16 is formed in the edge of the fixed disc 5 opposite to the surface of the movable disc 6, the accelerating groove 16 enables the edge of the bottom surface of the fixed disc 5 to incline upwards, when the sludge reaches the accelerating groove 16, the centrifugal force of the movable disc 6 to the sludge can play the maximum role because of no friction force of the bottom surface of the fixed disc 5 to the sludge, so that the sludge is thrown out and has a certain initial speed V0.
In this embodiment, the centrifugal hopper 1 is provided with a slag sensor 17 below the isolation plate 4, and the slag sensor 17 is spaced from the bottom of the middle through hole of the fixed disk 5. The slag sensor 17 is used for sensing whether the mud slag is accumulated in the middle through hole of the fixed disc 5.
In this embodiment, the slag sensor 17 includes an optical signal emitter and an optical signal receiver, and when the slag is piled up between the optical signal emitter and the optical signal receiver, the optical signal receiver cannot receive the optical signal of any optical signal emitter.
When the sludge is piled up in the middle through hole of the fixed disc 5, the movable disc 6 starts to rotate, and the sludge is brought into a sludge spreading channel between the movable disc 6 and the fixed disc 5. Referring to fig. 3, an extension rod 61 perpendicular to the top surface of the movable disc 6 is disposed in the middle of the top surface of the movable disc 6, the extension rod 61 penetrates through the middle through hole of the fixed disc 5 to be fixedly connected with the partition board 4, a sailboard 62 is disposed in the middle through hole of the fixed disc 5, the sailboard 62 can rotate along with the movable disc 6, mud residues in the middle through hole of the fixed disc 5 are attached to the inner wall of the middle through hole of the fixed disc 5, mud residue layers are attached to the inner wall of the middle through hole of the fixed disc 5 and the inlet of the residue spreading channel, and are used for isolating the residue spreading channel from liquid in the centrifugal bucket 1, so that the residue spreading channel is only used for solid mud residue treatment.
Further, the outside of fixed disk 5 and movable disk 6 sets up washes sediment and spouts ring 7, wash sediment and spout the below of ring 7 and set up water collecting vat 8, wash sediment and spout the passageway between ring 7 and the water collecting vat 8 and the exhibition sediment passageway intercommunication between fixed disk 5 and the movable disk 6. The sheet sludge passes through the sludge washing spray ring 7 after coming out of the sludge spreading channel, the sheet sludge can be washed by clean water sprayed by the sludge washing spray ring 7, the organic matters remained on the sludge are washed again, and the washed water is collected by the water collecting tank 8.
The outside of the slag washing spray ring 7 is also provided with a slag collecting disc 12, in the invention, the speed V0 of leaving the sludge from the slag spreading channel and the speed V1 of spraying water flow from the slag washing spray ring 7 meet the following conditions: when sand slag passes through the slag washing water flow, the sand slag is not contacted with the water collecting tank 8 and directly enters the slag collecting tray 12.
In this embodiment, an elastic support 9 in the vertical direction is disposed between the movable disk 6 and the frame, the bottom of the elastic support 9 is fixedly connected with the frame, the upper portion of the elastic support 9 is fixedly connected with a rotating plate 91, and the rotating plate 9 is rotatably connected with the bottom of the movable disk 6. The elastic supporting piece 9 can apply pressure to the movable disc 6 close to the fixed disc 5, so that the sludge of the movable disc 6 can shake properly in the sludge spreading channel, and the sand is easier to grind into sheets.
In this embodiment, the movable tray 6 is connected with the water collecting tank 8 through the synchronous support 10, the synchronous support 10 is rotatably connected with the movable tray 6, and the synchronous support 10 can keep the water collecting tank 8 and the movable tray 6 to move synchronously, so that sand and slag can pass through the slag washing spray ring 7 and then cross the water collecting tank 8, and smoothly enter the slag collecting tray 12.
In this embodiment, a groove 81 is provided at the bottom of the water collection tank 8, and the groove 81 communicates with the drain pipe 15 via the return pipe 14.
In this embodiment, the organic matter treating tank 3 includes a mixing chamber at an upper portion, a rotating chamber 33 at a lower portion, and a stirring rod 32 communicating the mixing chamber and the rotating chamber 33. The upper portion of mixing chamber sets up the feeding pipe 31, and feeding pipe 31 is used for throwing in the flocculating agent, and puddler 32 is used for evenly stirring the inside sewage of mixing chamber and flocculating agent.
Further, the bottom of the stirring rod 32 located at the inner part of the organic matter treatment tank 3 is provided with a water inlet 321, the inside of the rotating chamber 33 is provided with a filter cartridge 34, the bottom of the stirring rod 32 extends to the inside of the filter cartridge 34, and the rotating chamber 33 is provided with a water outlet 35 outside the filter cartridge 34. The stirring rod 32 in this place can introduce the water in the mixing chamber into the rotating chamber 33 through the water inlet 321.
The mixing chamber and the puddler 32 swivelling joint of this department, mixing chamber bottom set up the rotating electrical machines that is used for driving puddler 32 rotatory, and rotatory room 33 and puddler 32 fixed connection, puddler 32 can drive rotatory room 33 rotatory, carries out centrifugal separation, and cartridge filter 34 blocks the large granule thing in the sewage inside cartridge filter 34, and water passes through cartridge filter 34 and gets into cartridge filter 34's outside, from outlet pipe 35, but cyclic utilization.
In this embodiment, a fixing frame 36 is disposed at the bottom of the mixing chamber, and the fixing frame 36 is rotatably connected to the rotating chamber 33 for stable rotation of the rotating chamber 33.
Further, at least one pair of magnetic poles is arranged on the magnetizing box 2, a magnetic field is formed between the magnetic poles, and sewage is magnetized between the magnetic poles.
The working process of the steel mill circulating water treatment system in the embodiment is as follows:
step one: the high-pressure pump sends sewage into the centrifugal bucket 1, and the sewage is centrifugal rotatory in centrifugal bucket 1 inside, because the mud sediment quality of solid particle is great in the sewage, produces the wall phenomenon in centrifugal bucket 1 inside, and under the effect of gravity, the mud sediment gets into centrifugal bucket 1 bottom along centrifugal bucket 1's inner wall, then gets into fixed disk 5 middle part through-hole.
Step two: when the sludge is piled up in the middle through hole of the fixed disc 5, the movable disc 6 starts to rotate, and the sludge is brought into a sludge spreading channel between the movable disc 6 and the fixed disc 5. The sludge layer attached to the inlet of the sludge spreading channel can isolate the sludge spreading channel from the liquid in the centrifugal hopper 1, so that the sludge spreading channel is only used for solid sludge treatment;
the sludge is crushed into sheet sludge in the sludge spreading channel and leaves at the edge of the movable disc 6 and the fixed disc 5 with a certain initial velocity V0.
Step three: the sheet sludge is discharged from the sludge spreading channel and passes through the sludge washing spray ring 7, the sludge washing spray ring 7 can spray clean water to wash the sheet sludge, residual organic matters on the sludge are washed again, the washed water is collected by the water collecting tank 8, and the sand directly enters the sludge collecting tray 12.
Step four: the water in the collecting tank 8 enters a water discharge pipe 15 through a return pipe 14 and enters the magnetizing box 2 for magnetizing treatment.
Step five: the magnetized water enters a mixing chamber of the organic matter treatment box 3, is mixed with flocculating agent to generate large flocculating particles, and then enters a rotating chamber 33 through a water inlet 321 of a stirring rod 32; simultaneously, the stirring rod 32 can drive the rotating chamber 33 to rotate for centrifugal separation, the filter cartridge 34 blocks large particles in sewage inside the filter cartridge 34, and water enters the outside of the filter cartridge 34 through the filter cartridge 34 and goes out from the water outlet pipe 35 for recycling.
The steel mill circulating water treatment system in the embodiment removes large-particle sludge by carrying out cyclone separation on sewage, and then carries out organic matter treatment to obtain recyclable water. In the sludge removal process, the circulating water treatment system performs sheet treatment and cleaning on the sludge, so that the organic matter residue can be kept less, and the discharge is safer.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The steel mill circulating water treatment system comprises a centrifugal bucket (1), a magnetizing box (2) and an organic matter treatment box (3) which are sequentially communicated, wherein the centrifugal bucket (1) is conical, a drain pipe (15) is arranged at the top of the centrifugal bucket (1), and the steel mill circulating water treatment system is characterized in that a fixed disc (5) and a movable disc (6) which are coaxially arranged with the centrifugal bucket (1) are arranged at the bottom of the centrifugal bucket (1), the fixed disc (5) is fixedly connected with the centrifugal bucket (1), a through hole communicated with an outlet at the bottom of the centrifugal bucket (1) is formed in the middle of the fixed disc (5), and the movable disc (6) is coaxially and rotatably connected with the fixed disc (5) to form a slag spreading channel between the movable disc (6) and the fixed disc (5);
the slag washing and spraying device is characterized in that slag washing and spraying rings (7) are arranged outside the fixed disc (5) and the movable disc (6), a water collecting tank (8) is arranged below the slag washing and spraying rings (7), and a channel between the slag washing and spraying rings (7) and the water collecting tank (8) is communicated with a slag spreading channel between the fixed disc (5) and the movable disc (6);
a slag collecting disc (12) is further arranged outside the slag washing spray ring (7);
the bottom of the centrifugal hopper (1) is provided with a separation plate (4), the separation plate (4) is a circular plate coaxially arranged with the centrifugal hopper (1), and a sludge channel is arranged between the separation plate (4) and the hopper wall of the centrifugal hopper (1); the centrifugal hopper (1) is provided with a slag induction piece (17) below the isolation plate (4), and the slag induction piece (17) is at a certain distance from the bottom of the middle through hole of the fixed disc (5);
the speed V0 of leaving the sludge from the sludge spreading channel and the speed V1 of spraying water flow from the sludge washing spray ring (7) meet the following conditions: when the slag passes through the slag washing water flow, the slag is not contacted with the water collecting tank (8) and directly enters the slag collecting tray (12).
2. The steel mill circulating water treatment system according to claim 1, wherein an elastic support (9) in the vertical direction is arranged between the movable disc (6) and the frame, the bottom of the elastic support (9) is fixedly connected with the frame, the upper part of the elastic support (9) is fixedly connected with a rotary plate (91), and the rotary plate (91) is rotatably connected with the bottom of the movable disc (6).
3. The steel mill circulating water treatment system according to claim 2, characterized in that the movable plate (6) is connected with the water collecting tank (8) through a synchronous bracket (10), and the synchronous bracket (10) is rotatably connected with the movable plate (6).
4. A steel mill circulating water treatment system according to claim 3, characterized in that the bottom of the water collection tank (8) is provided with a groove (81), said groove (81) being in communication with the drain pipe (15) through a return pipe (14).
5. The steel mill circulating water treatment system according to claim 4, wherein the organic matter treatment tank (3) includes a mixing chamber at an upper portion, a rotating chamber (33) at a lower portion, and a stirring rod (32) communicating the mixing chamber and the rotating chamber (33);
the upper part of the mixing chamber is provided with a feeding pipe (31), and the bottom of the stirring rod (32) positioned in the organic matter treatment box (3) is provided with a water inlet hole (321);
the filter cartridge (34) is arranged in the rotary chamber (33), the bottom of the stirring rod (32) extends to the inside of the filter cartridge (34), and the rotary chamber (33) is provided with a water outlet pipe (35) outside the filter cartridge (34).
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| CN202210975970.8A CN115286167B (en) | 2022-08-15 | 2022-08-15 | Circulating water treatment system for steel mill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210975970.8A CN115286167B (en) | 2022-08-15 | 2022-08-15 | Circulating water treatment system for steel mill |
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| CN115286167A CN115286167A (en) | 2022-11-04 |
| CN115286167B true CN115286167B (en) | 2023-10-20 |
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