CN105709479A - Filtering device for slag-washing water of blast furnace - Google Patents

Filtering device for slag-washing water of blast furnace Download PDF

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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
Authority
CN
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
Application number
CN201610272000.6A
Other languages
Chinese (zh)
Inventor
周涛
董茂林
谢建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CISDI Engineering Co Ltd
Original Assignee
CISDI Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CISDI Engineering Co Ltd filed Critical CISDI Engineering Co Ltd
Priority to CN201610272000.6A priority Critical patent/CN105709479A/en
Publication of CN105709479A publication Critical patent/CN105709479A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11Filters 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
    • B01D29/13Supported filter elements
    • B01D29/23Supported filter elements arranged for outward flow filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/64Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6407Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
    • B01D29/6415Regenerating 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/66Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/04Supports for the filtering elements
    • B01D2201/0415Details of supporting structures
    • B01D2201/0423Details of supporting structures not in the inner side of the cylindrical filtering elements

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

A kind of blast furnace slag flushing water filtering device
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.
CN201610272000.6A 2016-04-27 2016-04-27 Filtering device for slag-washing water of blast furnace Pending CN105709479A (en)

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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

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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

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Cited By (10)

* Cited by examiner, † Cited by third party
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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CN101284197A (en) * 2007-04-12 2008-10-15 王勇 Vortex solid-liquid filter
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CN205627266U (en) * 2016-04-27 2016-10-12 中冶赛迪工程技术股份有限公司 Blast furnace slag water filter equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101284197A (en) * 2007-04-12 2008-10-15 王勇 Vortex solid-liquid filter
US20140021126A1 (en) * 2012-07-18 2014-01-23 Dan Lin Reversible backwashing self-cleaning filter
CN102861479A (en) * 2012-09-24 2013-01-09 邹云 Self-cleaning cyclone composite precision sand remover
CN202983391U (en) * 2012-10-16 2013-06-12 陈凤珠 Sucking-type blowdown filtering machine
WO2015038079A1 (en) * 2013-09-12 2015-03-19 Antel Aritma Tesi̇sleri̇ İnşaat Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Nozzle-brush automatic cleaning filter with motor reducer
CN205627266U (en) * 2016-04-27 2016-10-12 中冶赛迪工程技术股份有限公司 Blast furnace slag water filter equipment

Cited By (10)

* Cited by examiner, † Cited by third party
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