CN106906320B - Blast furnace water slag-flushing bottom of pond portion backwashing system - Google Patents
Blast furnace water slag-flushing bottom of pond portion backwashing system Download PDFInfo
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- CN106906320B CN106906320B CN201710134124.2A CN201710134124A CN106906320B CN 106906320 B CN106906320 B CN 106906320B CN 201710134124 A CN201710134124 A CN 201710134124A CN 106906320 B CN106906320 B CN 106906320B
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- water
- blast furnace
- slag
- pipe
- flushing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4642—Counter-current flushing, e.g. by air with valves, e.g. rotating valves
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
Blast furnace water slag-flushing bottom of pond provided by the invention portion backwashing system only need to increase a Backwash pipeline and two branch pipe(tube)s (i.e. the first branch pipe and the second branch pipe) in original design；One backwash Hand-operated butterfly valve is installed in Backwash pipeline, one first backwash electric butterfly valve is installed respectively on first pipeline, one second backwash electric butterfly valve is installed respectively on second pipeline；The backwash work to the first blast furnace water slag-flushing pond is can be realized as by the first branch pipe, the backwash work to the second blast furnace water slag-flushing pond can be realized as by the second branch pipe；So that the blast furnace water slag-flushing bottom of pond portion backwashing system of the present invention has the characteristics that simple in structure, manufacturing cost is low, while the present invention can fast and efficiently carry out bottom of pond backsurging operation, greatly improve work efficiency.
Description
Technical field
The invention belongs to technical field of smelting, specifically, the present invention relates to blast furnace ironmaking field one kind it is practical and convenient,
The device for improving backwash effect simple in structure, operability is strong, the backwash of specifically a kind of blast furnace water slag-flushing bottom of pond portion
System.
Background technology
Generated high temperature slag iron is after sow is detached with molten iron in blast furnace production process, and slag is into after people's granulated slag groove
Flushing cinder pond is flowed into after the high-velocity flow water quenching granulating sprayed by special nozzle, the grain slag in granulating pit is chronically at hot environment,
The grain slag knot tying of grain slag layer lower part, scale formation are more serious, cause the cobblestone water penetration of slag bath bottom to be deteriorated, with the time
Passage, bottom filter less effective, cause tower pumping water unsmooth, cause tower pump in the process of running occur acutely shake, and
The phenomenon that becoming larger extremely with noise (water pump is pumped into the load running of large quantity of air sky), brings to upper tower pump assembly and pipe-line equipment
Great hidden danger influences the normal production of blast furnace.A kind of flush slag bottom backwashing system now designed, by original design
Innovation is carried out, the defect of flushing cinder bottom of pond portion backwash operation function, the technique for further improving slag treatment are compensated for
Demand.
Country's Treating Methods for BF Slag has furnace slag granulating, is allowed to dry slag, flushing cinder cotton or the swollen slag of production etc. at present, but using the most
Generally flush slag processing method.By the classification of flush slag processing method, midsole filters method Water Quenching Slag using relatively conventional,
But backwash effect is undesirable, and summing up mainly has following characteristics and disadvantage：
1. the back purge system used, repercussion effect is undesirable, when granulating pit bottom knot tying, fouling are serious, leads to slag bath
The cobblestone water penetration of bottom is deteriorated, and manually or mechanically cleaning flushing cinder bottom of pond portion foulant is carried out when needing to overhaul using the end of the year,
Labor intensity is big；
2. the back purge system used, operation is complex, completes that the entire counter-flushing process used time is longer, and working efficiency is inclined
It is low；
3. the back purge system used, in operation process, upper tower pump needs to carry out shutdown operation.
4. the back purge system used, the backsurging operation frequency is relatively low, and the operation used time is longer, it is necessary to put iron interval time
More than backsurging operation can be carried out under 30min or more or blast furnace staying.As shown in Figure 1, the back purge system of the prior art into
When row backsurging operation, must be requested that blast furnace, which puts iron interval time, ensures the safety of upper tower pump high-voltage motor more than 30min or more
Start and stop, therefore blast furnace necessarily is in Status of hugh wind can just carry out backwash operation to washing slag water pond, backwash frequency January/time, pole
The big filter effect for influencing granulating pit bottom filter system easily causes blocking, and blast furnace normal slag iron discharge is directly affected when serious.
Invention content
The purpose of the present invention is to provide a kind of blast furnace water slag-flushing bottom of pond portion backwashing systems, at least to solve the prior art
Present in complicated for operation, technical problem that backwash effect is bad, while backwash existing in the prior art can be solved
The operation frequency is relatively low, operation used time longer technical problem.
The purpose of the present invention is being directed to the deficiencies in the prior art, provide it is a kind of it is practical and convenient, simple in structure, can
Strong operability, specifically a kind of flush slag bottom of pond portion backwashing system improve backwash effect.
To solve the above-mentioned problems, the present invention provides a kind of blast furnace water slag-flushing bottom of pond portion backwashing system, technical solution
It is as follows：
A kind of blast furnace water slag-flushing bottom of pond portion backwashing system, including Backwash pipeline, the input end of the Backwash pipeline
Be connected to the water outlet of turbid cisterna ambiens, point there is the first branch pipe and the second branch pipe in the Backwash pipeline, first branch pipe with
First blast furnace water slag-flushing pond is connected to, and second branch pipe is connected to the second blast furnace water slag-flushing pond, is equipped on first branch pipe
First back flush valves are equipped with the second back flush valves on second branch pipe；And collection conduits, in the collection conduits
Dividing has the first outlet pipe and the second outlet pipe, first outlet pipe to be connected to first blast furnace water slag-flushing pond, and described second
Outlet pipe is connected to second blast furnace water slag-flushing pond, and the first Water-pumping valve is housed on first outlet pipe, described the
Second Water-pumping valve is housed on two outlet pipes, also divides to have in the collection conduits and is equipped with tower on first pumps first and draws water
Pipe, first drinking-water pipe are connected to the water inlet of the turbid cisterna ambiens.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that blast furnace water slag-flushing bottom of pond portion
Backwashing system further includes：Second drinking-water pipe；Second drinking-water pipe be communicated in the collection conduits and the turbid cisterna ambiens into
The mouth of a river is equipped with tower on second on second drinking-water pipe and pumps, the 4th Water-pumping valve is housed on second drinking-water pipe；
Third Water-pumping valve is housed on first drinking-water pipe.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that first back flush valves,
Two back flush valves, the first Water-pumping valve, the second Water-pumping valve, third Water-pumping valve and the 4th Water-pumping valve are electrically operated valve
And it is operated by the control open and close of master control indoor equipment.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that first back flush valves, institute
It is electric butterfly valve to state the second back flush valves, first Water-pumping valve and second Water-pumping valve；The third is drawn water
Valve and the 4th Water-pumping valve are electrical ball valve.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that second drinking-water pipe and described
First drinking-water pipe is connected to through return pipe with the water inlet of the turbid cisterna ambiens, and the 5th Water-pumping valve is housed on the return pipe.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that first branch pipe and described
One outlet pipe is connected to through the first aqueduct with first blast furnace water slag-flushing pond；Second branch pipe and second outlet pipe
It is connected to second blast furnace water slag-flushing pond through the second aqueduct.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that the Backwash pipeline into
Mouth end is provided with the 4th back flush valves.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that also dividing in the collection conduits has
First pipe, the first pipe are connected to the water outlet of the turbid cisterna ambiens, are backwashed equipped with third in the first pipe
Valve.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that the first pipe and described anti-
Flushing pipe is connected to through water inlet line with the water outlet of the turbid cisterna ambiens.
In blast furnace water slag-flushing bottom of pond as described above portion backwashing system, it is preferable that blast furnace water slag-flushing bottom of pond portion
Backwashing system further includes：Holder, for fixing the Backwash pipeline.
Analysis is it is found that compared with prior art, the advantages of the present invention are：
1. simple in structure, manufacturing cost is low
2. it is good to be applicable in effect
The applicable effect of the present invention is good, practice have shown that in backsurging operation, improves traditional backwashing system work flow
The drawbacks such as complicated, activity duration length, substantially increase operating efficiency.
3. operating flexibility
Without stopping upper tower pump when flushing cinder bottom of pond portion backwashes, backwash synchronous can be carried out with upper tower pumping operation, be improved
The stability of the present invention, while avoiding the damage that tower pump shutdown operation carrys out equipment belt.
4. improving the operation frequency, securely and reliably
Early period backsurging operation, must be requested that blast furnace puts iron interval time ensures upper tower pump high-voltage electricity more than 30min or more
The safe start and stop of machine, therefore blast furnace necessarily is in Status of hugh wind just and can liquidate slag bath and carries out backwash operation, backwashes the frequency 1
Month/time, the filter effect that extreme influence to flushing cinder bottom of pond filters system easily cause blocking, blast furnace normal slag are directly affected when serious
Iron discharges.It is normal to put the progress of iron gap, it can be carried out to target slag bath by operating each motor-driven valve per heat interval 10min
Recoil, start and stop water pump high-voltage motor operation that it goes without doing securely and reliably and ensure the normal of flushing cinder bottom of pond filter system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the back purge system of the prior art.
Fig. 2 is the structural schematic diagram of the blast furnace water slag-flushing bottom of pond portion backwashing system of the preferred embodiment of the present invention.
In figure, the first blast furnace water slag-flushings of 1- pond；The second blast furnace water slag-flushings of 2- pond；3- first pipes；30- collection conduits；31-
Hand-operated butterfly valve；32- third back flush valves；33- Hand-operated butterfly valves；35- sluice motor-driven valves；The second drinking-water pipes of 4-；40- first goes out
Water pipe, 41- Hand-operated butterfly valves；The first Water-pumping valves of 42-；43- manual ball valves；Tower pumps on 44- second；45- check-valves；46- the 4th
Water-pumping valve；47- manual ball valves；The first aqueducts of 48-；The first drinking-water pipes of 5-；The second outlet pipes of 50-；51- Hand-operated butterfly valves；
The second Water-pumping valves of 52-；53- manual ball valves；Tower pumps on 54- first；55- check-valves；56- third Water-pumping valves；The manual balls of 57-
Valve；The second aqueducts of 58-；6- Backwash pipelines；60- water inlet lines；The first branch pipes of 61-；The first back flush valves of 611-；
The second branch pipes of 62-；The second back flush valves of 621-；The 4th back flush valves of 63-；7- return pipes；The 5th Water-pumping valves of 71-；72-
Manual ball valve；8- holders；The turbid cisterna ambiens of 9-；121- surges valve；122- surges valve；123- surges valve；124- surges valve.
Specific implementation mode
The present invention is described in further details with reference to the accompanying drawings and detailed description.
As shown in Fig. 2, the blast furnace water slag-flushing bottom of pond portion backwashing system of the preferred embodiment of the present invention includes mainly：Backwash
Pipeline 6 and collection conduits 30.The input end of Backwash pipeline 6 is connected to the water outlet of turbid cisterna ambiens 9 to receive in backwash
From in the washing slag water of turbid cisterna ambiens 9, point there are the first branch pipe 61 and the second branch pipe 62 in Backwash pipeline 6, the first branch pipe 61 and the
One blast furnace water slag-flushing pond 1 is connected to, and the first back flush valves 611 are housed on the first branch pipe 61, and the first back flush valves 611 are opened
When, the 61 interior washing slag water to circulate of the first branch pipe flows into the first blast furnace water slag-flushing pond 1.Second branch pipe 62 and the second blast furnace water slag-flushing
Pond 2 is connected to, and the second back flush valves 621 are housed on the second branch pipe 62, when the first back flush valves 621 are opened, the second branch pipe
The washing slag water to circulate in 62 flows into the second blast furnace water slag-flushing pond 2.Dividing in collection conduits 30 has the first outlet pipe 40 and second
Outlet pipe 50, the first outlet pipe 40 is connected to the first blast furnace water slag-flushing pond 1 so that the first blast furnace water slag-flushing pond 1 goes out by first
Water pipe 40 is connected to collection conduits 30, and the first Water-pumping valve 42 is housed on the first outlet pipe 40, and the first Water-pumping valve 42 is opened
When, the washing slag water in the first blast furnace water slag-flushing pond 1 is extracted and flows into the first outlet pipe 40.Second outlet pipe 50 and the second blast furnace water
Flushing cinder pond 2 is connected to so that the second blast furnace water slag-flushing pond 2 is connected to by the second outlet pipe 50 with collection conduits 30, in the second water outlet
Second Water-pumping valve 52 is housed, when the second Water-pumping valve 52 is opened, the washing slag water in the second blast furnace water slag-flushing pond 2 is extracted on pipe 50
And flow into the second outlet pipe 50.Also dividing in collection conduits 30 has the first drinking-water pipe 5, is equipped on first on the first drinking-water pipe 5
Tower pump 54, and the water inlet of turbid cisterna ambiens 9 is connected to so that collection conduits 30 are connected to by the first drinking-water pipe 5 with turbid cisterna ambiens 9.
To sum up, backwashing system invention in blast furnace water slag-flushing bottom of pond provided by the invention portion has simple in structure, manufacture
Feature at low cost, while inventing backwash and pumping operation and can be carried out at the same time, enabling it is anti-fast and efficiently to carry out bottom of pond
Operation is rinsed, is greatly improved work efficiency.
Blast furnace water slag-flushing bottom of pond portion backwashing system further includes：Second drinking-water pipe 4；Second drinking-water pipe 4 is communicated in manifold trunk
The water inlet of road 30 and turbid cisterna ambiens 9 is drawn water second so that collection conduits 30 are connected to by the second drinking-water pipe 4 with turbid cisterna ambiens 9
Tower pump 44 on second is installed on pipe 4, the 4th Water-pumping valve 46 is housed on the second drinking-water pipe 4；It is equipped on the first drinking-water pipe 5
Third Water-pumping valve 56.At production status (drawing water), tower pump 44 can only open one, i.e. shape on tower pump 54 and second on first
At the using and the reserved state, so as to when tower pump breaks down on a certain platform, enable tower on another platform and pump, do not delay production,
Realize the continuity of production.Second drinking-water pipe 4 and the first drinking-water pipe 5 are connected to through return pipe 7 with the water inlet of turbid cisterna ambiens 9, are being returned
5th Water-pumping valve 71 is housed on water pipe 7, to reduce the change operation to turbid cisterna ambiens 9 when the second drinking-water pipe 4 is arranged, and is conducive to
Control washing slag water flows back in turbid cisterna ambiens 9.
First back flush valves 611, the second back flush valves 621, the first Water-pumping valve 42, the second Water-pumping valve 52,
Three Water-pumping valves 56 and the 4th Water-pumping valve 46 are electrically operated valve and are connect in master control indoor equipment with master control indoor equipment
Control under, complete open and close operation, to improve the degree of automation, be easy to be controlled remotely.
First branch pipe 61 and the first outlet pipe 40 are connected to through the first aqueduct 48 with the first blast furnace water slag-flushing pond 1；Second
Branch pipe 62 and the second outlet pipe 50 are connected to through the second aqueduct 58 with the second blast furnace water slag-flushing pond 2, so as in setting the
The change to the first blast furnace water slag-flushing pond 1 and the second blast furnace water slag-flushing pond 2 is reduced when one branch pipe 61 and the second branch pipe 62 to operate, and
The first blast furnace water slag-flushing pond 1 and the second blast furnace water slag-flushing pond 2 or washing slag water are flowed into from the first blast furnace water conducive to control washing slag water
Flushing cinder pond 1 and the second blast furnace water slag-flushing eat 2 outflows.Backwash pipeline 6 is flowed into for the ease of control washing slag water, in Backwash pipeline
Input end be provided with the 4th back flush valves 63, the 4th back flush valves 63 are preferably manually-operated gate, further preferably hand
Dynamic butterfly valve.
Also dividing in collection conduits 30 has first pipe 3, and first pipe 3 is connected to the water outlet of turbid cisterna ambiens 9, in first pipe
Third back flush valves 32 are housed on 3.The water outlet of first pipe 3 and Backwash pipeline 6 through water inlet line 60 and turbid cisterna ambiens 9 connects
It is logical, so that blast furnace water slag-flushing bottom of pond portion backwashing system, only it is (i.e. anti-need to can to increase a total pipeline in original design
Flushing pipe 6) and two branch pipe(tube)s (i.e. the first branch pipe 61 and the second branch pipe 62)；One is installed respectively on two branch pipelines
First back flush valves 611 and the second back flush valves 621, change is small, at low cost.
In order to make Backwash pipeline 6 obtain firm support, as shown in Fig. 2, backwash system of blast furnace water slag-flushing bottom of pond portion
System invention further includes holder 8, for fixing Backwash pipeline 6.In the present invention, holder 8 is 4, can be with by 4 holders 8
Ensure Backwash pipeline 6 stablizes support.
Invention invention invention is for the ease of the control to backwash, the first back flush valves 611, second of the invention recoil
It is electric butterfly valve, preferably DN800 electric butterfly valves to wash valve 621, the first Water-pumping valve 42 and the second Water-pumping valve 52.Third is taken out
Penstock 56, the 4th Water-pumping valve 46 and the 5th Water-pumping valve 71 are electrical ball valve, preferably DN600 electrical ball valves.Third is anti-
Flushing valve 32 is electric butterfly valve, preferably DN600 electric butterfly valves.
Invention invention is as shown in Fig. 2, blast furnace water slag-flushing bottom of pond portion backwashing system further includes multiple check-valves and multiple hands
Movable valve (such as Hand-operated butterfly valve and manual ball valve), with reference to aforementioned electrically operated valve to the installation position of manually-operated gate and check-valves
It illustrates：It is equipped with Hand-operated butterfly valve 31, electric butterfly valve 32, Hand-operated butterfly valve 33 successively in the flow direction of 3 upper edge washing slag water of first pipe；
It is equipped with Hand-operated butterfly valve 41 on the first aqueduct 48, electric butterfly valve 42 is equipped on the first outlet pipe 40, in the second drinking-water pipe 4
Upper edge washing slag water flow direction is equipped with tower pump 44, check-valves 45, electrical ball valve 46 and manual ball valve on manual ball valve 43, second successively
47,；It is equipped with Hand-operated butterfly valve 51 on the second aqueduct 58, electric butterfly valve 52 is equipped on the second outlet pipe 50, is taken out first
5 upper edge washing slag water of water pipe flow direction successively be equipped with manual ball valve 53, first on tower pump 54, check-valves 55, electrical ball valve 56 and manually
Ball valve 57；Electrical ball valve 71 and manual ball valve 72 are equipped on return pipe 7.
Blast furnace during normal production, weekly backwashes flush slag bottom of pond portion, if occurring repeatability slag in production process
Bottom of pond filters tower pump 54 (i.e. 2# pumps and 1# are pumped in Fig. 2) flowed fluctuations of drawing water on tower pump 44 or first on effect variation or second
When, backwash operation number can be properly increased.Second blast furnace water slag-flushing pond 2 need to be backwashed, confirm iron mouth before State of Blast Furnace
It has been blocked up that, and slag runner scum has gone out.Backwash is done after slag runner scum stream is complete to prepare；
When being backwashed to the second blast furnace water slag-flushing pond 2：Confirm Hand-operated butterfly valve 41,42 full-gear of electric butterfly valve and
In normal flushing cinder；Confirm that backwash Hand-operated butterfly valve (i.e. the 4th back flush valves) 63 is shown in a fully open operation；Confirm each electronic
Valve signal feedback is normal；Confirm and closes electric butterfly valve 52；Open the second backwash electric butterfly valve (i.e. the second back flush valves)
621, after " reaching position " signal feedback in place afterwards close sluice motor-driven valve 35 and (stop toward the second blast furnace water slag-flushing pond 2 and the
It is put into washing slag water in one blast furnace water slag-flushing pond 1), proceed by the backwash of the second blast furnace water slag-flushing pond 2.(in operation process manually
Butterfly valve is normally open, and backwash Hand-operated butterfly valve 63 is normally opened, Hand-operated butterfly valve 33 is normally opened, Hand-operated butterfly valve 31 is normally opened, Hand-operated butterfly valve
41 is normally opened normally opened with Hand-operated butterfly valve 51).Sluice motor-driven valve 35 is opened in recovery operation, closes the second backwash electric butterfly valve
621, confirm sluice washing slag water in place, meets tapping outlet condition；Each valve and flow are adjusted by normal iron program of putting.To
When two blast furnace water slag-flushing ponds 2 are backwashed, 54 operation of tower pump on first, the first backwash electric butterfly valve 611 closing, hand adjustment
Valve 33 is normally opened, Hand-operated butterfly valve 31 is normally opened, manual ball valve 43 is normally opened, electrical ball valve 46 is closed, manual ball valve 47 is normally opened, electrical ball valve
71 is normally opened, manual ball valve 72 is normally opened, and manual ball valve 53 is normally opened, electrical ball valve 56 is opened, manual ball valve 57 is normally opened, Hand-operated butterfly valve 51
Normally opened, electric butterfly valve 52 is closed；First blast furnace water slag-flushing pond, 1 normal pumping, Hand-operated butterfly valve 41 is normally opened, electric butterfly valve
42 open, and electric butterfly valve 32 is closed.
When being backwashed to the first flushing cinder pond 1：Confirm Hand-operated butterfly valve 51,52 full-gear of electric butterfly valve and is in just
In normal flushing cinder；Confirm that backwash Hand-operated butterfly valve 63 is shown in a fully open operation；Confirm that each electronic valve signal feedback is normal；Confirm and closes electricity
Dynamic butterfly valve 42；Open the first backwash electric butterfly valve 611, after " reaching position " signal feedback in place afterwards close sluice motor-driven valve 35
(stopping being put into washing slag water in the first blast furnace water slag-flushing pond 1 and the second blast furnace water slag-flushing pond 2), proceeds by the first blast furnace water
Flushing cinder pond 1 backwashes.(Hand-operated butterfly valve is normally open in operation process, and Hand-operated butterfly valve 63 is normally opened for backwash, Hand-operated butterfly valve 33
It is normally opened, Hand-operated butterfly valve 31 is normally opened, Hand-operated butterfly valve 41 is normally opened and Hand-operated butterfly valve 51 is normally opened).It is electronic to open sluice for recovery operation
Valve closes the first backwash electric butterfly valve 611, confirms sluice washing slag water in place, meet tapping outlet condition；By normally putting iron journey
Sequence adjusts each valve and flow, and electric butterfly valve 32 is closed.
In practice, the red slag that blast furnace is discharged is poured one of blast furnace water slag-flushing pond by washing slag water through slag flushing pump, in addition
One blast furnace water slag-flushing pond is drawn water, grabs slag (or dry slag without water) operation, waits for another blast furnace water slag-flushing pond
Grain slag use leisure moments after, then switched, the red slag that blast furnace is discharged is poured another blast furnace water slag-flushing by washing slag water again
Pond, a blast furnace water slag-flushing pond are drawn water, grab slag operation.Valve 121,122,123 and 124 is the valve that surges.
The present invention carries out in normal iron gap of putting, and can be carried out pair by operating each motor-driven valve per heat interval 10min
The recoil in target flushing cinder pond, it goes without doing start and stop water pump (tower pump 54 on tower pump 44 and first on i.e. second) high-voltage motor operation, peace
It is complete reliable and ensure the normal of flushing cinder bottom of pond filter system.
Analysis is it is found that compared with prior art, the advantages of the present invention are：
1. simple in structure, manufacturing cost is low
2. it is good to be applicable in effect
The applicable effect of the present invention is good, practice have shown that in backsurging operation, improves traditional backwashing system work flow
The drawbacks such as complicated, activity duration length, substantially increase operating efficiency.
3. operating flexibility
Tower pump 54 on 44 and first is pumped without stopping tower on second when flushing cinder bottom of pond portion backwashes, backwash and upper tower draw water
Operation can synchronize progress, improve the stability of the present invention, while avoid the damage that tower pump shutdown operation carrys out equipment belt.
4. improving the operation frequency, securely and reliably
Early period backsurging operation, must be requested that blast furnace puts iron interval time ensures upper tower pump high-voltage electricity more than 30min or more
The safe start and stop of machine, therefore blast furnace necessarily is in Status of hugh wind just and can liquidate slag bath and carries out backwash operation, backwashes the frequency 1
Month/time, the filter effect that extreme influence to flushing cinder bottom of pond filters system easily cause blocking, blast furnace normal slag are directly affected when serious
Iron discharges, i.e., is recoiled using the blast furnace water slag-flushing of backwashing system pair first shown in Fig. 1 pond 1 or the second blast furnace water slag-flushing pond 2
When washing, only by opening valve 32, and 1#, 2# pump are ensured while in shutdown status (according to operating instruction high-voltage motor
30min need to be spaced by being again started up), and valve 46, valve 56 are closed, and then pass through control valve 42, valve 52
Open and-shut mode, to realize the backwash to the first blast furnace water slag-flushing pond 1 or the second blast furnace water slag-flushing pond 2, and at valve 35
In closed state.In addition blast furnace slag iron discharge interval time only 10min during normal production cannot be satisfied the high pressure of the 1# or 2# pumps
The start and stop interval time 30min of motor defined, therefore could carry out backwash operation in blast furnace staying state.By using this
Invent the blast furnace water slag-flushing bottom of pond portion backwashing system provided so that backwash can carry out in normal iron gap of putting, per heat
Interval 10min can carry out the recoil to target slag bath by operating each motor-driven valve, and tower pumps high-voltage motor in start and stop that it goes without doing
Operation securely and reliably and ensures the normal of flushing cinder bottom of pond filter system.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, all things considered are all merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of blast furnace water slag-flushing bottom of pond portion backwashing system, which is characterized in that including：
Backwash pipeline, the input end of the Backwash pipeline are connected to the water outlet of turbid cisterna ambiens, in the Backwash pipeline
Dividing has the first branch pipe and the second branch pipe, first branch pipe to be connected to the first blast furnace water slag-flushing pond, second branch pipe and second
Blast furnace water slag-flushing pond is connected to, and the first back flush valves are housed on first branch pipe, and second is equipped on second branch pipe
Back flush valves；With
Collection conduits, point there is the first outlet pipe and the second outlet pipe in the collection conduits, first outlet pipe with it is described
First blast furnace water slag-flushing pond is connected to, and second outlet pipe is connected to second blast furnace water slag-flushing pond, in first water outlet
First Water-pumping valve is housed on pipe, the second Water-pumping valve is housed on second outlet pipe, is also divided in the collection conduits
There are the first drinking-water pipe for being equipped with that tower pumps on first, first drinking-water pipe to be connected to the water inlet of the turbid cisterna ambiens.
2. blast furnace water slag-flushing bottom of pond according to claim 1 portion backwashing system, which is characterized in that the blast furnace water slag-flushing
Bottom of pond portion backwashing system further includes：
Second drinking-water pipe；Second drinking-water pipe is communicated in the water inlet of the collection conduits and the turbid cisterna ambiens, described
Tower on second is installed to pump on two drinking-water pipes, the 4th Water-pumping valve is housed on second drinking-water pipe；
Third Water-pumping valve is housed on first drinking-water pipe.
3. blast furnace water slag-flushing bottom of pond according to claim 2 portion backwashing system, which is characterized in that
First back flush valves, the second back flush valves, the first Water-pumping valve, the second Water-pumping valve, third Water-pumping valve
It is electrically operated valve with the 4th Water-pumping valve and is operated by the control open and close of master control indoor equipment.
4. blast furnace water slag-flushing bottom of pond according to claim 3 portion backwashing system, which is characterized in that
First back flush valves, second back flush valves, first Water-pumping valve and second Water-pumping valve
It is electric butterfly valve；
The third Water-pumping valve and the 4th Water-pumping valve are electrical ball valve.
5. blast furnace water slag-flushing bottom of pond according to claim 2 portion backwashing system, which is characterized in that
Second drinking-water pipe and first drinking-water pipe are connected to through return pipe with the water inlet of the turbid cisterna ambiens, in the return water
5th Water-pumping valve is housed on pipe.
6. blast furnace water slag-flushing bottom of pond according to claim 1 portion backwashing system, which is characterized in that
First branch pipe and first outlet pipe are connected to through the first aqueduct with first blast furnace water slag-flushing pond；
Second branch pipe and second outlet pipe are connected to through the second aqueduct with second blast furnace water slag-flushing pond.
7. blast furnace water slag-flushing bottom of pond according to claim 1 portion backwashing system, which is characterized in that
The input end of the Backwash pipeline is provided with the 4th back flush valves.
8. blast furnace water slag-flushing bottom of pond according to claim 1 portion backwashing system, which is characterized in that
Also dividing in the collection conduits has first pipe, and the first pipe is connected to the water outlet of the turbid cisterna ambiens, described
Third back flush valves are housed in first pipe.
9. blast furnace water slag-flushing bottom of pond according to claim 8 portion backwashing system, which is characterized in that
The first pipe and the Backwash pipeline are connected to through water inlet line with the water outlet of the turbid cisterna ambiens.
10. blast furnace water slag-flushing bottom of pond according to claim 1 portion backwashing system, which is characterized in that the blast furnace water punching
Slag bath bottom backwashing system further includes：Holder, for fixing the Backwash pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710134124.2A CN106906320B (en) | 2017-03-08 | 2017-03-08 | Blast furnace water slag-flushing bottom of pond portion backwashing system |
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| CN201710134124.2A CN106906320B (en) | 2017-03-08 | 2017-03-08 | Blast furnace water slag-flushing bottom of pond portion backwashing system |
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| CN106906320B true CN106906320B (en) | 2018-10-09 |
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| CN108796144A (en) * | 2018-05-31 | 2018-11-13 | 新兴河北工程技术有限公司 | A kind of application of novel backwashing technology in blast furnace slag flushing filter tank |
| CN117487595B (en) * | 2024-01-03 | 2024-03-22 | 呼伦贝尔金新化工有限公司 | Lignite pulverized coal efficient gasification system |
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| CN1177063C (en) * | 2001-05-01 | 2004-11-24 | 中冶赛迪工程技术股份有限公司 | Blast furnace slag treating system |
| CN100453655C (en) * | 2006-10-11 | 2009-01-21 | 中冶华天工程技术有限公司 | Blastfurnace slag combined treating system |
| CN101781691B (en) * | 2009-01-16 | 2011-11-16 | 中冶赛迪工程技术股份有限公司 | Blast-furnace slag processing system |
| CN206570357U (en) * | 2017-03-08 | 2017-10-20 | 湖北新冶钢有限公司 | Blast furnace water slag-flushing bottom of pond portion backwashing system |
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Effective date of registration: 20180102 Address after: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Applicant after: Hubei Xinyegang Special Steel Tube Co., Ltd. Address before: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Applicant before: Hubei Xinyegang Steel Co., Ltd. |
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Address after: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee after: Daye Special Steel Co., Ltd Address before: 435001 Huangshi Road, Hubei, Huangshi, No. 316 Patentee before: Hubei Xinyegang Special Steel Tube Co., Ltd. |
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