CN108676941A - A kind of afterheat of slags processing system and its application method - Google Patents
A kind of afterheat of slags processing system and its application method Download PDFInfo
- Publication number
- CN108676941A CN108676941A CN201810434217.1A CN201810434217A CN108676941A CN 108676941 A CN108676941 A CN 108676941A CN 201810434217 A CN201810434217 A CN 201810434217A CN 108676941 A CN108676941 A CN 108676941A
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- Prior art keywords
- slag
- cooler
- clinker
- water
- level
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Classifications
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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
-
- 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
- C21B3/08—Cooling slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- 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)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of afterheat of slags processing system and its application method, the system comprises：An at least slag input channel, level-one cooler, water mist cooler, buffering grid, slag tapping equipment, draining layer and secondary water out；Slag input channel is inputted for high temperature furnace slag；The present invention absorbs the heat of high temperature furnace slag by using level-one cooler first, then cools down whereabouts clinker by water mist cooler again, after-heat in slag is absorbed, quenching of clinker, makes clinker solidifying, granulating, and grain slag can be fallen on buffering grid after solidification；Grain slag across buffering grid can fall on slag tapping equipment top or surrounding, and slag tapping equipment will be enriched to a certain amount of grain slag and be sent to outside equipment, be used as other purposes；In addition, secondary water by draining layer by deviating from grain slag, cooling water is re-used for after purification.The recycling to high temperature furnace slag sensible heat had both been realized in this way, and clinker of having got back also achieves recycling for cooling water.
Description
Technical field
The invention belongs to technical field of smelting more particularly to a kind of afterheat of slags processing systems and its application method.
Background technology
The primary product of ironmaking processes is molten iron and slag, and slag density is low compared with molten iron, molten iron is not dissolved in, generally in blast furnace
Middle and later periods of tapping a blast furnace can be discharged with molten iron by blast furnace taphole, and slag temperature is usually arranged via slag road in 1500 DEG C or more, good fluidity
After entering in Slag treatment device, quenching is directly carried out by the water in cooler, then hot waste water discharges or recycle after treatment profit
With water cooling slag can pass through dehydration equipment, be used for other purposes.As seen from the above, a large amount of sensible heat is contained in high temperature sludge, if
It can be utilized again, energy consumption, considerable benefit can be reduced.
Invention content
For the drawbacks described above in background technology, the main purpose of the present invention is to provide a kind of afterheat of slags processing systems
And its application method, the recycling obvious to high temperature furnace slag, clinker of having got back can be realized using the system.
In order to achieve the above object, the present invention adopts the following technical scheme that：A kind of afterheat of slags processing system, including：
An at least slag input channel is inputted for the clinker；
Level-one cooler is located at below the slag input channel, for receiving the stove entered by the slag input channel
Slag and the heat for absorbing the clinker；
Water mist cooler is located at below the level-one cooler, for cooling down the clinker overflowed in the level-one cooler,
Obtain grain slag；
Grid is buffered, is located at below the water mist cooler, for receiving grain slag；
Slag tapping equipment, the lower section for being located at the buffering grid are slagged tap after the grain slag is by the buffering grid into described
The grain slag is separated into slag and secondary water by the slag tapping equipment, and the slag is discharged by device；
Draining layer is located at below the slag tapping equipment, for receiving the secondary water separated in the slag tapping equipment；
Secondary water out is located at below the draining layer, and the secondary water is discharged by the secondary water out.
As a further preference, the system also includes heat radiation coolers, adjacent with the slag input channel, for inhaling
Receive the radiant heat of the heat transfer and clinker in the level-one cooler of clinker in the slag input channel.
As a further preference, the level-one cooler is opened type water-cooling cooler, the bottom of the level-one cooler
Portion and/or surrounding are provided with cooling water pipe.
As a further preference, the level-one cooler, which is additionally provided with, is connected to external inlet and outlet.
As a further preference, the water mist cooler includes inside atomization cooling water pipe and outside atomization cooling water
Pipe, the inside atomization cooling water pipe and outside atomization cooling water pipe are located at the both sides of the whereabouts clinker.
As a further preference, the secondary coolers further include bottom side atomization cooling water pipe, described slow for cooling down
Rush the grain slag on grid.
As a further preference, the water inlet and/or water mist of the secondary water out and the level-one cooler cool down
The water inlet of device is connected to.
As a further preference, the slag tapping equipment is spiral clinker removor.
As a further preference, the slag input channel is 2.
As a further preference, the heat radiation cooler is 2.
Another object of the present invention is to provide the application methods of above-mentioned afterheat of slags processing system, include the following steps：
Include the following steps：
One slag input channel is provided, the clinker is poured into the slag input channel；
Level-one cooler is provided, the clinker in the slag input channel enters in the level-one cooler, the level-one cooling
Device absorbs the heat of the clinker；
Clinker in the level-one cooler overflows, and clinker falls；
Water mist cooler is provided, clinker is cooled down during clinker falls using the water mist cooler, is obtained
To grain slag；
One buffering grid is provided, the grain slag is received using the buffering grid；
One slag tapping equipment is provided and, into the slag tapping equipment, passes through the slag tapping equipment after the grain slag is by the buffering grid
The grain slag is separated into slag and secondary water, and the slag is discharged；
One draining layer is provided, the secondary water separated in the slag tapping equipment is received；
Secondary water out is provided, secondary water is discharged using the secondary water out.
The beneficial effects of the invention are as follows：The present invention absorbs the heat of high temperature furnace slag by using level-one cooler first, so
Whereabouts clinker is cooled down by water mist cooler again afterwards, after-heat in slag is absorbed and quenching clinker, clinker solidifying, granulating is made, it is solidifying
Gu grain slag can be fallen on buffering grid after；Grain slag across buffering grid can fall on slag tapping equipment top or surrounding, and slag tapping equipment will be rich
Collect a certain amount of grain slag to be sent to outside equipment, is used as other purposes；In addition, the water in grain slag is deviate from by draining layer, two are obtained
Secondary water is re-used for cooling water after purification.The recycling to high temperature furnace slag sensible heat, stove of having got back both had been realized in this way
Slag also achieves recycling for cooling water.
Description of the drawings
Fig. 1 is the structural schematic diagram of 1 afterheat of slags processing system of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of 2 afterheat of slags processing system of the embodiment of the present invention.
Fig. 3 is the working state schematic representation of spiral clinker removor in Fig. 1.
Label is described as follows in attached drawing：1. water inlet；2. water outlet；3. slag input channel；4. heat radiation cooler；5. level-one
Water cooler；6. inside atomization cooling water pipe；7. outside atomization cooling water pipe；8. bottom side atomization cooling water pipe；9. buffering grid；
10. spiral clinker removor；11. motor；12. draining layer；13. secondary cooling water out, 14- screw rods, 15- guide grooves.
Specific implementation mode
The present invention solves prior art high temperature furnace slag by a kind of afterheat of slags processing system of offer and its application method
The defect not yet in effect utilized.
To solve the above-mentioned problems, the main thought of the embodiment of the present invention is：
Afterheat of slags of the embodiment of the present invention utilizes system, including：
An at least slag input channel is inputted for the clinker；
Level-one cooler is located at below the slag input channel, for receiving the stove entered by the slag input channel
Slag and the heat for absorbing the clinker；
Water mist cooler is located at below the level-one cooler, for cooling down the clinker overflowed in the level-one cooler,
Obtain grain slag；
Grid is buffered, is located at below the water mist cooler, for receiving grain slag；
Slag tapping equipment, the lower section for being located at the buffering grid are slagged tap after the grain slag is by the buffering grid into described
The grain slag is separated into slag and secondary water by the slag tapping equipment, and the slag is discharged by device；
Draining layer is located at below the slag tapping equipment, for receiving the secondary water separated in the slag tapping equipment；
Secondary water out is located at below the draining layer, and the secondary water is discharged by the secondary water out.
Each equipment of above system is to meet the conventional equipment of respective function, and concrete structure repeats no more.
In order to which above and other purpose, feature and the advantage of the present invention can be clearer and more comprehensible, number cited below particularly is implemented
Example, to illustrate afterheat of slags processing system and its application method of the present invention.It is in order to enable any to make following explanation
Those skilled in the art can manufacture and using the present invention.The explanation of particular embodiment and purposes is only carried as example
For.To those skilled in the art, the embodiments described herein can be variously changed and is combined, and determined here
The General Principle of justice can be applied and other embodiments and purposes without departing from the scope of the invention.Therefore, this hair
It is bright to be not intended to be limited by described and displaying embodiment, but should be according to consistent with herein disclosed principles and feature
Widest range.
Embodiment 1
As shown in Figure 1, afterheat of slags of the embodiment of the present invention utilizes system, including：
Slag input channel 3 is inputted for high temperature furnace slag；2 of slag input channel setting left and right can either alternatively or simultaneously work, and be convenient for
Maintenance；
Level-one cooler 5 is located at 3 lower section of the slag input channel, for receiving and cooling down the high temperature entered by slag input channel
Clinker；Level-one cooler is opened type peviform water-cooling cooler, and bottom and surrounding side wall are provided with cooling water pipe, are additionally provided with
It is connected to external inlet and outlet；Above-mentioned level-one cooler is conventional structure equipment, and function is mainly to provide cooling water
It exchanges heat with high temperature furnace slag.
Water mist cooler is located at below level-one cooler, for cooling down the whereabouts clinker overflowed in level-one cooler；Water mist
Cooler includes the inside atomization cooling water pipe 6 and outside atomization cooling water pipe 7 for being located at whereabouts clinker both sides, atomized
Water；Further include bottom side atomization cooling water pipe 8, for the whereabouts clinker on cooling buffering grid；Above-mentioned atomization cooling water Guan Weichang
Structural device is advised, function is mainly to provide atomization cooling water and exchanges heat with high temperature furnace slag, and atomizer can be arranged.
Grid 9 is buffered, is located at below secondary coolers, for receiving through secondary coolers whereabouts clinker after cooling；It is slow
It rushes and is provided with trepanning in network, to allow that grain slag can be fallen, specific size is set according to demand.
Spiral clinker removor 10 is located at the lower section of buffering grid, is driven by motor 11；Water for buffering grid 9 will to be passed through
Slag is discharged；As shown in figure 3, spiral clinker removor 10 passes through leading on screw rod by rotating clockwise, by the grain slag for falling accumulation
Slot 15, is sent to the outside of surplus heat treatment system, and draining layer 12 is located at 14 lower section of spiral clinker removor screw rod, for collecting water
Water in slag, obtains secondary water, and conventional draining rack can be used；
Secondary water out 13 is located at 12 lower section of draining layer, for the secondary water to be discharged.
Wherein, two slag input channels 3 are arranged in the present embodiment system, this is because slag temperature is high, aggressivity is strong, it is ensured that
One cinder hole of equipment works, and another cinder hole maintenance, under normal circumstances, 1500 DEG C or so of high temperature furnace slag can be flowed by blast furnace residue channel
One of slag input channel 3, when the quantity of slag is excessive, two slag input channels 3 can be used simultaneously.Warm sludge flows behind 3 channel of slag input
Enter the level-one water cooler 5 of open larger peviform, above-mentioned level-one cooler 5 is mainly by the recirculated water cooling pipe of its bottom to warm in it
The heat of slag is absorbed, and according to disengaging water temperature, its heat absorption efficiency is made to reach best；Clinker in level-one water cooler 5 overflows
Afterwards, can secondary cooling be carried out by inside atomization cooling water pipe 6 and outside atomization cooling water pipe 7, then clinker solidifies after water quenching
It falls on cooling slag to fall on buffering grid 9, to have prevented red slag from generating, bottom side atomization cooling water pipe 8 can be again to buffering grid 9
On slag cooled down；Grain slag can fall on 10 top of spiral clinker removor driven by motor 11 or near, when grain slag is accumulated to one
Can device external be passed out to by spiral clinker removor 10 after quantitative, most water in grain slag can be by the drip of bottom in the process
Water layer 12 removes, and is then discharged by secondary water out 13, and level-one or two level cooling are again acted as after the water after discharge is purified
The water inlet of device carrys out cooled slag.
Embodiment 2
The present embodiment adds heat radiation cooler on the basis of embodiment 1, adjacent with slag input channel, for absorbing slag input
In channel into the heat transfer of clinker and and level-one cooler in clinker radiant heat, and taken out of by its internal recirculated cooling water,
The heat can be utilized.Heat radiation cooler may be configured as two of left and right, adjacent with above-mentioned slag input channel, can also replace work
Make.Heat radiation cooler includes passing in and out radiant heat to receive shell and the intake tunnel and exhalant canal of inside.It is located at into cinder hole
Between level-one cooler and the Inlet and outlet water of heat radiation cooler, cinder hole inside points heat collects.
As shown in Fig. 2, the distribution of the present embodiment system top can either alternatively or simultaneously work there are two slag input channel 3, convenient for inspection
Repair, clinker is entered by slag input channel 3 and is flowed into the level-one water cooler 5 of peviform, heat radiation cooler 4 to the heat in slag input channel 3 and
The radiant heat of slag is absorbed in level-one water cooler 5, and is taken out of by its internal recirculated water cooling, which can be utilized,
Here disengaging coolant-temperature gage can be controlled by adjusting water speed, so that 4 working efficiency of heat radiation cooler is reached best；Level-one water cooler
5 be an open larger peviform structure, is made of refractory material and bottom coohng water pipe, after clinker flows into it, bottom
Cooling water pipe absorb heat, for prevent the too thin heat utilization of bottom slag solidification layer insufficient or it is too thick be unfavorable for conducting heat, need to adjust
Water speed stablizes water inlet 1,2 water temperature difference of water outlet and solidified layer thickness.
The present embodiment system middle section is clinker secondary water cold-zone, after clinker is overflowed by 5 edge of level-one water cooler, meeting
Naturally it falls, clinker can be cooled down by inside atomization cooling water pipe 6 and outside atomization cooling water pipe 7 during falling, and make clinker
Solidifying, granulating, grain slag can fall on cooling slag and fall on buffering grid 9 after solidification, to prevent red slag from generating, bottom side atomization cooling water
Pipe 8 carries out not cold slag on buffering grid 9 completely cooling.
The present embodiment system lower part：The grain slag of buffering grid 9 is fallen across cooling slag can fall on spiral clinker removor 10
Portion or surrounding, spiral clinker removor 10 are driven by motor 11, will be enriched to a certain amount of grain slag and are sent to outside equipment, and spiral shell is adjusted here
Rotation 10 rotating speed of slag tapping equipment ensures that grain slag accumulating amount and dehydration rate reach best, most water meetings in grain slag in the process
It is removed by the draining layer 12 of bottom, is then discharged by secondary cooling water out 13, after the water after discharge is purified, is re-used for
Carry out cooled slag as atomized water.
The present embodiment system reaches profit by containing high temperature furnace slag in the large area level-one cooler of bottom belt recirculated water
With the purpose of heat of slags, meanwhile, so that the heat storage efficiency of equipment is maximized by control loop water speed.The present embodiment system makes
Multimode is carried out to clinker sensible heat with the heat radiation cooler with recirculated water and is repeatedly collected, and by control loop water flow,
Largely improve the hot collecting amount of slag.One cooling slag of the present embodiment system design falls buffering grid, for preventing from falling
The damage of grain slag or not cold red slag to spiral clinker removor.In addition, the present embodiment system is mutually tied by spiral clinker removor with draining layer
The method of conjunction makes water, slag realize separation, and has carried out primary purifying to cooling water, meanwhile, purified cooling water is by secondary
For secondary cooling clinker, recycling for waste water is realized.
Technical solution in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
Afterheat of slags processing system of the embodiment of the present invention absorbs the heat of high temperature furnace slag by using a cooler first
Then amount cools down whereabouts clinker by water mist cooler again, after-heat in slag is absorbed and quenching clinker, makes clinker solidification grain
Change, grain slag can be fallen on buffering grid after solidification；Grain slag across buffering grid can fall on slag tapping equipment top or surrounding, slag tapping equipment
A certain amount of grain slag will be enriched to be sent to outside equipment, be used as other purposes；In addition, the water in grain slag is deviate from by draining layer, obtain
To secondary water, cooling water is re-used for after purification.The recycling to high temperature furnace slag sensible heat had both been realized in this way, had been got back
Clinker also achieves recycling for cooling water.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not limited to this hair
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection domain within.
Claims (10)
1. a kind of afterheat of slags processing system, it is characterised in that：Including：
An at least slag input channel is inputted for the clinker；
Level-one cooler is located at below the slag input channel, for receive the clinker that is entered by the slag input channel with
And absorb the heat of the clinker；
Water mist cooler is located at below the level-one cooler, for cooling down the clinker overflowed in the level-one cooler, obtains
Grain slag；
Grid is buffered, is located at below the water mist cooler, for receiving grain slag；
Slag tapping equipment is located at the lower section of the buffering grid, after the grain slag is by the buffering grid, into the slag tapping equipment,
The grain slag is separated into slag and secondary water by the slag tapping equipment, and the slag is discharged；
Draining layer is located at below the slag tapping equipment, for receiving the secondary water separated in the slag tapping equipment；
Secondary water out is located at below the draining layer, and the secondary water is discharged by the secondary water out.
2. afterheat of slags processing system according to claim 1, it is characterised in that：The system also includes heat radiation coolings
Device, the heat radiation cooler include passing in and out radiant heat to receive shell and the intake tunnel and exhalant canal of inside；The heat
Radiant coolers are adjacent with the slag input channel, for absorbing the heat transfer of clinker and the level-one cooler in the slag input channel
The radiant heat of middle clinker.
3. afterheat of slags processing system according to claim 1, it is characterised in that：The level-one cooler is opened type water
Cold cooler, the bottom of the level-one cooler and/or surrounding are provided with cooling water pipe.
4. afterheat of slags processing system according to claim 1 or 3, it is characterised in that：The level-one cooler is also set up
Have and is connected to external inlet and outlet.
5. afterheat of slags processing system according to claim 1, it is characterised in that：The water mist cooler includes inside mist
Change cooling water pipe and outside atomization cooling water pipe, the inside atomization cooling water pipe and outside atomization cooling water pipe are located at institute
State the both sides of whereabouts clinker.
6. afterheat of slags processing system according to claim 1 or 5, it is characterised in that：The secondary coolers further include
Bottom side atomization cooling water pipe, for cooling down the grain slag on the buffering grid.
7. afterheat of slags processing system according to claim 1 or 5, it is characterised in that：The secondary water out with it is described
The water inlet connection of the water inlet and/or water mist cooler of level-one cooler.
8. afterheat of slags processing system according to claim 1, it is characterised in that：The slag tapping equipment is spiral clinker removor.
9. afterheat of slags processing system according to claim 1, it is characterised in that：The slag input channel is 2.
10. the application method of afterheat of slags processing system as described in claim any one of 1-9, it is characterised in that：Including as follows
Step：
One slag input channel is provided, the clinker is poured into the slag input channel；
Level-one cooler is provided, the clinker in the slag input channel enters in the level-one cooler, and the level-one cooler is inhaled
Receive the heat of the clinker；
Clinker in the level-one cooler overflows, and clinker falls；
Water mist cooler is provided, clinker is cooled down during clinker falls using the water mist cooler, obtains water
Slag；
One buffering grid is provided, the grain slag is received using the buffering grid；
A slag tapping equipment is provided, after the grain slag is by the buffering grid, into the slag tapping equipment, by the slag tapping equipment by institute
It states grain slag and is separated into slag and secondary water, and the slag is discharged；
One draining layer is provided, the secondary water separated in the slag tapping equipment is received；
Secondary water out is provided, secondary water is discharged using the secondary water out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434217.1A CN108676941A (en) | 2018-05-08 | 2018-05-08 | A kind of afterheat of slags processing system and its application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810434217.1A CN108676941A (en) | 2018-05-08 | 2018-05-08 | A kind of afterheat of slags processing system and its application method |
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| CN105277004A (en) * | 2015-11-25 | 2016-01-27 | 南京圣诺热管有限公司 | Device and method for waste heat recovery of high-temperature molten slag by means of two-step method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101850222A (en) * | 2010-04-29 | 2010-10-06 | 江苏百斯特环境工程有限公司 | Mechanical granulation and heat recovery device of liquid slag |
| JP2012021204A (en) * | 2010-07-16 | 2012-02-02 | Nippon Steel Corp | Method for treatment of high-temperature slag |
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| CN102766706A (en) * | 2012-07-17 | 2012-11-07 | 北京科技大学 | Coal gasification system for waste heat of blast furnace slag |
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Application publication date: 20181019 |