CN105709479A - Filtering device for slag-washing water of blast furnace - Google Patents
Filtering device for slag-washing water of blast furnace Download PDFInfo
- Publication number
- CN105709479A CN105709479A CN201610272000.6A CN201610272000A CN105709479A CN 105709479 A CN105709479 A CN 105709479A CN 201610272000 A CN201610272000 A CN 201610272000A CN 105709479 A CN105709479 A CN 105709479A
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- China
- Prior art keywords
- slag
- blast furnace
- inner core
- filtering device
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000001914 filtration Methods 0.000 title claims abstract description 42
- 238000005406 washing Methods 0.000 title abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 61
- 239000010865 sewage Substances 0.000 claims abstract description 24
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 238000010926 purge Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 206010017000 Foreign body aspiration Diseases 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 238000011001 backwashing Methods 0.000 abstract description 8
- 239000011490 mineral wool Substances 0.000 abstract description 7
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/04—Supports for the filtering elements
- B01D2201/0415—Details of supporting structures
- B01D2201/0423—Details of supporting structures not in the inner side of the cylindrical filtering elements
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention discloses a filtering device for slag-washing water of a blast furnace, belonging to the technical field of the blast furnace ironmaking. The filtering device for slag-washing water of blast furnace comprises a shell with a water inlet and a water outlet, wherein the water inlet is formed at the lateral upward side of the shell, the water outlet is formed at the lateral down side of the shell, a sewage draining outlet and a slag hole are formed at the top part and the bottom part of the shell respectively, the water inlet and the water outlet are communicated to form a deslagging channel, the slag hole is communicated with the water outlet to form a filtering channel, the slag hole is communicated with the sewage draining outlet to form a back washing channel, a filter is arranged on the filtering channel, and a back washing device is arranged on the back washing channel. The filtering device can separate heavy iron slag particles from slag-washing water by centrifugal rotational flows, and can filter small slag wool and suspended matters by a filter screen. That is to say, the filtering device can realize coarse filtration and fine filtration simultaneously, the filtering efficiency and the filtering quality are improved, the back washing device can realize online full-automatic back washing, the operation is simple and convenient and the operating efficiency is further improved.
Description
Technical field
The invention belongs to technical field of blast furnace ironmaking, relate to a kind of blast furnace slag flushing water filtering device.
Background technology
In iron-making production, iron ore, in blast furnace internal-combustion, is melted and produces reduction reaction by coke, produces molten iron and the blast furnace slag of about 1450 DEG C.Blast furnace slag and molten iron separated after, molten iron enters the next production procedure such as steel-making；Blast furnace slag is main side-product, it is necessary to flows out from blast furnace, and processes, if the blast furnace slag of 1450 DEG C cools down rapidly through flush slag, the blast furnace slag obtained is the good material producing cement, cools down rapidly if not carrying out flush slag, and what obtain is the refuse of the first sample of image-stone.Therefore, the blast furnace slag of 1450 DEG C is cooled down by the commonly used flush slag technique of iron and steel enterprise.Blast furnace slag flushing process, washing slag water absorbs the heat of blast furnace slag, and own temperature raises and reaches more than 80 DEG C, and blast furnace slag quenching water is used further to blast furnace slag flushing after slag bath precipitation, heat radiation, and the heat taken away is every year up to 10,000,000 tons of standard coals.
The waste heat reclaiming blast furnace slag quenching water heats, and not only solves the heat source of heat supply in winter, also reduces the consumption of washing slag water, is the effective way of current blast furnace slag quenching water UTILIZATION OF VESIDUAL HEAT IN.Due to blast furnace slag quenching water internal containing substantial amounts of big 3 proportion slag granules and density less than slag wool float less than 5 μm of 1000kg/m, diameter, enter priming reservoir after precipitation, suspension content is still up to 80mg/L, for removing slag wool float, fiber bundle filter is currently mainly adopted to be filtered, and existing fiber bundle filter can only partial interception slag wool, some then can pass the filtering layer of fiber bundle filter, and with current outflow filter, thus the heat exchanger of next link can be entered, and it is deposited in above heat exchanger plates, affect heat transfer effect.Additionally, when filter after using a period of time is carried out backwash to recover its filtering function, specifically when needing to carry out backwash and backwashing time etc. needs operator to control by rule of thumb, often delay the best opportunity of backwash, thus affecting filter effect and the service life of filter.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of blast furnace slag flushing water filtering device, can effectively remove the granule in washing slag water and float, and realize automatic on-line backwash, improve filter effect and the stability of filter, provide reliability for follow-up UTILIZATION OF VESIDUAL HEAT IN.
It is an object of the invention to be achieved through the following technical solutions:
A kind of blast furnace slag flushing water filtering device, including the housing with water inlet and outlet, described water inlet is arranged on above the side of housing, outlet is arranged on the side-lower of housing, the top of described housing and bottom are also respectively provided with sewage draining exit and slag notch, and water inlet connects formation slag releasing channel with slag notch: slag notch connects formation filtration channel with outlet；Slag notch connects formation backwash passage with sewage draining exit；Filtration channel is provided with filter；Backwash passage is provided with back purge system.
Further, described back purge system includes inner core, the soil pick-up assembly in inner core is fixed in inner core drainage screen and rotation, the two ends of described inner core are fixed by upper bracket and lower carriage and housing seal, described inner core drainage screen is arranged concentrically and makes one airtight annular purge chamber of formation between the two in inner core, a cylindrical filter chamber is formed between described inner core drainage screen and upper bracket and lower carriage, described annular filter chamber connects with outlet, described cylindrical filter chamber respectively with filtration channel, backwash channel connection, backwash passage is connected by described soil pick-up assembly with sewage draining exit.
Further, described soil pick-up assembly includes rotating shaft, multiple steel brush being fixed in rotating shaft by support and rotating shaft drive motor, described rotating shaft is provided with the drain outlet connected with sewage draining exit, described drain outlet is connected with steel brush by the sewage routeway arranged in support, described steel brush is provided with multiple for the sewage discharge tube from inner core drainage screen surface Foreign body aspiration.
Further, described filter is inner core drainage screen.
Further, described inner core drainage screen adopts titanium alloy material to make and order number is less than 30 orders.
Further, the inner surface of described housing is provided with abrasion-proof corrosion-proof erosion resisting coating.
The invention has the beneficial effects as follows:
The present invention is by scum granule heavier in centrifugal cyclone separation washing slag water, and less slag wool and float is filtered by filter screen, namely in an equipment, realize coarse filtration simultaneously and essence filters, improve filter efficiency and quality, simultaneously, realizing full-automatic online backwashing by back purge system, it is simple, convenient, improves operating efficiency further.
Other advantages of the present invention, target and feature will be illustrated to a certain extent in the following description, and to a certain extent, will be apparent to those skilled in the art based on to investigating hereafter, or can be instructed from the practice of the present invention.The target of the present invention and other advantages can be realized by description below and obtain.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is the structural representation of the present invention.
Description of symbols:
1-water inlet；2-outlet；3-housing；4-sewage draining exit；5-slag notch；6-slag releasing channel；7-filtration channel；8-backwash passage；9-back purge system；91-inner core；92-inner core drainage screen；93-upper bracket；94-lower carriage；95-annular purge chamber；96-cylindrical filter chamber；97-rotating shaft；98-support；99-steel brush；100-rotating shaft drive motor；10-drain outlet；11-sewage routeway.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment is only for illustrating the present invention, rather than in order to limit the scope of the invention.
As shown in the figure, a kind of blast furnace slag flushing water filtering device of the present embodiment, including the housing 3 with water inlet 1 and outlet 2, water inlet 1 is arranged on above the side of housing, outlet 2 is arranged on the side-lower of housing, make there is pressure differential between water inlet 1 and outlet 2, convenient under gravity to washing slag water natural filtration, it is beneficial to minimizing energy consumption, the present embodiment is provided with sewage draining exit 4 at the top of housing, it is beneficial to formation backwash passage, the bottom of housing is provided with slag notch 5, it is beneficial under gravity, heavier scum granule is made to be expelled directly out, form coarse filtration, water inlet connects formation slag releasing channel 6 with slag notch: slag notch connects formation filtration channel 7 with outlet, slag notch connects formation backwash passage 8 with sewage draining exit, backwash passage is provided with back purge system 9, lighter dregs are discharged；Filtration channel 7 is provided with filter, forms essence and filter.
The present invention is by scum granule heavier in centrifugal cyclone separation washing slag water, and is filtered less slag wool and float by filter screen, namely realizes coarse filtration simultaneously and essence filters；And realize full-automatic online backwashing by back purge system, lighter dregs are discharged, it is achieved an import, the multi-level of three outlets are filtered, and filter efficiency and quality are greatly improved, and it is simple, convenient, has the stronger suitability.
In the present embodiment, back purge system 9 includes inner core 91, inner core drainage screen 92 and rotates the soil pick-up assembly being fixed in inner core, the two ends of inner core are fixed with housing seal by upper bracket 93 and lower carriage 94, inner core drainage screen 92 is arranged concentrically and makes one airtight annular purge chamber 95 of formation between the two in inner core 91, a cylindrical filter chamber 96 is formed between inner core drainage screen and upper bracket and lower carriage, annular filter chamber 95 connects with outlet, cylindrical filter chamber 96 respectively with filtration channel, backwash channel connection, backwash passage is connected by soil pick-up assembly with sewage draining exit.
In the present embodiment, soil pick-up assembly includes rotating shaft 97, multiple steel brush 99 being fixed in rotating shaft 97 by support 98 and rotating shaft drive motor 100, rotating shaft 97 is provided with the drain outlet 10 connected with sewage draining exit, drain outlet 10 is connected with steel brush 99 by the sewage routeway 11 arranged in support 98, steel brush 99 is provided with multiple for the sewage discharge tube (not shown) from inner core drainage screen surface Foreign body aspiration.
In the present embodiment, filter is inner core drainage screen, and namely inner core drainage screen had both been filter, again for backwash part.
Work process: the washing slag water containing blast furnace slag and float is entered housing by water inlet, under the centrifugal cyclone effect and action of gravity of soil pick-up assembly, heavier blast furnace slag granule falls into housing bottom, discharges through slag notch, completes coarse filtration；Washing slag water after coarse filtration enters the annular filter chamber of inner core through the lower carriage top of housing, and from inside to outside by inner core drainage screen, the outlet of the scrubbing water side-lower after filtration is discharged, and completes essence filtration；It is to be cleaned that the float thinner than drainage screen and slag wool are blocked and accumulate in inner surface of filter screen etc.:
When dregs accumulate on filter screen inner surface, between the inside and outside surface of filter screen, form pressure reduction, when pressure reduction reaches predetermined value, by controller opens sewage draining exit valve, turn down outlet valve simultaneously.Due to sewage draining exit outlet and atmosphere, the pressure reduction formed between such filter interior hydraulic pressure and outside atmosphere can make soil pick-up assembly produce powerful suction, motor drives soil pick-up assembly to rotate simultaneously, under the dual function of suction and steel brush, it is ensured that the dregs of filter screen inner surface are effectively discharged.Along with the discharge of filter screen inner surface dregs, filter screen inside and outside differential pressure will be gradually reduced, and when lower than setting value, automatically having cleaned, controller cuts out blowoff valve, opens big outlet valve, enters normal operating conditions, completes the discharge of lighter dregs.
In order to better ensure work efficiency and the service life of filter, inner core drainage screen adopts corrosion resistant titanium alloy to make, and its filter screen order number is less than 30 orders；Filter housings is provided with anticorrosive wear-resistant coating, can improve service life.
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of the technical program, it all should be encompassed in the middle of scope of the presently claimed invention.
Claims (6)
1. a blast furnace slag flushing water filtering device, including the housing with water inlet and outlet, it is characterized in that: described water inlet is arranged on above the side of housing, outlet is arranged on the side-lower of housing, the top of described housing and bottom are also respectively provided with sewage draining exit and slag notch, and water inlet connects formation slag releasing channel with slag notch: slag notch connects formation filtration channel with outlet；Slag notch connects formation backwash passage with sewage draining exit；Filtration channel is provided with filter；Backwash passage is provided with back purge system.
2. a kind of blast furnace slag flushing water filtering device according to claim 1, it is characterized in that: described back purge system includes inner core, the soil pick-up assembly in inner core is fixed in inner core drainage screen and rotation, the two ends of described inner core are fixed by upper bracket and lower carriage and housing seal, described inner core drainage screen is arranged concentrically and makes one airtight annular purge chamber of formation between the two in inner core, a cylindrical filter chamber is formed between described inner core drainage screen and upper bracket and lower carriage, described annular filter chamber connects with outlet, described cylindrical filter chamber respectively with filtration channel, backwash channel connection, backwash passage is connected by described soil pick-up assembly with sewage draining exit.
3. a kind of blast furnace slag flushing water filtering device according to claim 2, it is characterized in that: described soil pick-up assembly includes rotating shaft, multiple steel brush being fixed in rotating shaft by support and rotating shaft drive motor, described rotating shaft is provided with the drain outlet connected with sewage draining exit, described drain outlet is connected with steel brush by the sewage routeway arranged in support, described steel brush is provided with multiple for the sewage discharge tube from inner core drainage screen surface Foreign body aspiration.
4. a kind of blast furnace slag flushing water filtering device according to claim 2, it is characterised in that: described filter is inner core drainage screen.
5. according to the arbitrary described a kind of blast furnace slag flushing water filtering device of claim 1-4, it is characterised in that: described inner core drainage screen adopts titanium alloy material to make and order number is less than 30 orders.
6. according to the arbitrary described a kind of blast furnace slag flushing water filtering device of claim 1-4, it is characterised in that: the inner surface of described housing is provided with abrasion-proof corrosion-proof erosion resisting coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272000.6A CN105709479A (en) | 2016-04-27 | 2016-04-27 | Filtering device for slag-washing water of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272000.6A CN105709479A (en) | 2016-04-27 | 2016-04-27 | Filtering device for slag-washing water of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105709479A true CN105709479A (en) | 2016-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610272000.6A Pending CN105709479A (en) | 2016-04-27 | 2016-04-27 | Filtering device for slag-washing water of blast furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN105709479A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110727A (en) * | 2016-08-23 | 2016-11-16 | 江苏嘉恒环境科技有限公司 | A kind of back flushing type front defecator and water purifier |
| CN106362463A (en) * | 2016-11-23 | 2017-02-01 | 济南多舜信息科技有限公司 | Slag washing water filter |
| CN106390570A (en) * | 2016-11-23 | 2017-02-15 | 济南多舜信息科技有限公司 | Blast furnace flag flashing water filter |
| CN106430371A (en) * | 2016-12-09 | 2017-02-22 | 中冶赛迪工程技术股份有限公司 | Filter device and blast furnace waste water filter |
| CN108636120A (en) * | 2018-05-29 | 2018-10-12 | 珠海市江河海水处理科技股份有限公司 | Spiral-flow type accurate filter |
| CN109289280A (en) * | 2018-11-05 | 2019-02-01 | 韩业 | A kind of improved sewage disposal device |
| CN109692516A (en) * | 2019-01-19 | 2019-04-30 | 中国农业科学院农田灌溉研究所 | A kind of preposition self-cleaning filter device of water pump |
| WO2021086277A1 (en) * | 2019-10-31 | 2021-05-06 | Fts Fi̇ltrasyon Aritim Si̇stemleri̇ San. Ti̇c. A.Ş. | Two-stage automatic filtration systems |
| CN114748902A (en) * | 2022-04-07 | 2022-07-15 | 张乃翠 | Hydraulic engineering residue filters collection device |
| CN115282665A (en) * | 2022-10-10 | 2022-11-04 | 江苏赛沐思环保科技有限公司 | Filter-pressing formula sewage filter equipment for environmental protection |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110727A (en) * | 2016-08-23 | 2016-11-16 | 江苏嘉恒环境科技有限公司 | A kind of back flushing type front defecator and water purifier |
| CN106362463A (en) * | 2016-11-23 | 2017-02-01 | 济南多舜信息科技有限公司 | Slag washing water filter |
| CN106390570A (en) * | 2016-11-23 | 2017-02-15 | 济南多舜信息科技有限公司 | Blast furnace flag flashing water filter |
| CN106430371A (en) * | 2016-12-09 | 2017-02-22 | 中冶赛迪工程技术股份有限公司 | Filter device and blast furnace waste water filter |
| CN108636120A (en) * | 2018-05-29 | 2018-10-12 | 珠海市江河海水处理科技股份有限公司 | Spiral-flow type accurate filter |
| CN109289280A (en) * | 2018-11-05 | 2019-02-01 | 韩业 | A kind of improved sewage disposal device |
| CN109692516A (en) * | 2019-01-19 | 2019-04-30 | 中国农业科学院农田灌溉研究所 | A kind of preposition self-cleaning filter device of water pump |
| WO2021086277A1 (en) * | 2019-10-31 | 2021-05-06 | Fts Fi̇ltrasyon Aritim Si̇stemleri̇ San. Ti̇c. A.Ş. | Two-stage automatic filtration systems |
| CN114748902A (en) * | 2022-04-07 | 2022-07-15 | 张乃翠 | Hydraulic engineering residue filters collection device |
| CN115282665A (en) * | 2022-10-10 | 2022-11-04 | 江苏赛沐思环保科技有限公司 | Filter-pressing formula sewage filter equipment for environmental protection |
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Application publication date: 20160629 |