CN109628668A - Steel slag cracking and residual neat recovering system - Google Patents
Steel slag cracking and residual neat recovering system Download PDFInfo
- Publication number
- CN109628668A CN109628668A CN201910065749.7A CN201910065749A CN109628668A CN 109628668 A CN109628668 A CN 109628668A CN 201910065749 A CN201910065749 A CN 201910065749A CN 109628668 A CN109628668 A CN 109628668A
- Authority
- CN
- China
- Prior art keywords
- furnace body
- steel slag
- bell
- slag
- cracking
- 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.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 92
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 238000005336 cracking Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000003860 storage Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 9
- 230000003111 delayed effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000012946 outsourcing Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000032258 transport Effects 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910001341 Crude steel Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The present invention relates to a kind of steel slag cracking and residual neat recovering systems, including slag transport storage device and steel slag cracking furnace；Furnace body is wound with cold water pipe from the bottom to top, and cold water pipe extends upwardly to bell by furnace body again and is fixed on the inner wall of bell, to realize out water in cold water pipe by low-temperature heat to high temperature.Realize the cracking and waste heat recycling of steel slag；It fully cracks steel slag and realizes steel slag waste heat recycling, reach energy-saving and environment-friendly purpose.
Description
Technical field
The invention belongs to steel slag cracking and heat recovery technology fields, are related to a kind of by steel slag cracking furnace, slag transport
Storage device and the steel slag cracking and residual neat recovering system of system combination.
Background technique
China's crude steel yield is up to 800,000,000 tons/year (account for about world's crude steel yield 50%), and one ton of crude steel of every production will produce
The steel slag of raw 120kg or so, producing 800000000 tons of crude steel per year just has about 100,000,000 tons of steel slags to generate, and the steel slag temperature being discharged from converter exists
1500 DEG C or so and be in a liquid state, the sensible heat that ton slag contains is no less than the heat of 60kg mark coal, then the steel slag waste heat of national year loss
The calorific value of coal is marked not less than 6,000,000 tons.
The processing method of the outer hot steel slag of Current Domestic mainly has heat stewing method, hot application method, tray method, water quenching, wind quenching
Method, drum process and granulating wheel method etc., the first two accounting of kind processing method in large and medium-sized iron and steel enterprise, 129, China are more than
80%, the accounting of other processing methods is less than 20%.
Countries in the world slag processing is to recycle based on metallic iron therein, since converter is intermittence deslagging
(the deslagging period is in 35min or so), slag processing process are all discontinuity operation again, arrange hot steel slag waste heat unstable state
It puts, causes countries in the world hot steel slag waste heat that can not recycle, the steel slag waste heat rate of recovery is zero.
Each steel mill has obtained generally utilizing the stewing technique of steel slag hot at home at present, and technological principle is to be placed in hot steel slag
In stewing tank, sprays water in stewing tank to steel slag surface atomizing, keep its internal-external temperature difference excessive and generate thermal stress, steam pressure process chats phase
Change and generate transformation stress etc., it is quickly cooled down steel slag, is naturally broken, so that the preferable separation of metal and slag is realized, it
After multi-level hierarchical magnetic separation, metal charge and nonmetallic material are separated, are allowed to that Each answers the purpose intended；Stewing tank is that steel slag hot boils in a covered pot over a slow fire technique
Core equipment, be the key that determine steel slag hot boil in a covered pot over a slow fire technique can efficient, safe and stable operation, but existing stewing tank has
The defect of hot steel slag thermal energy can not be recycled, and during processing fall one layer of slag, spill a water, using hook machine hook dissipate, make steel
Slag temperature is reduced to 800 DEG C or so by 1500 DEG C or so, and whole operation operation is all discontinuity, will cause waste thermal energy,
The problem of polluting environment, the low-temp low-pressure saturated vapor generated during slag stewing, which puts idle discharge, causes sternly water resource and thermal energy
The waste problem of weight, and the broken steel slag of low temperature after the stewing cracking of heat is all to go out slag stewing tank by hook machine hook, and magnetic separation point is sent in entrucking
Grade system carries out grading and slag iron separation, and detached job is cumbersome, slag stewing tank is easily damaged.
Summary of the invention
In order to overcome the disadvantages mentioned above of the prior art, the present invention provides a kind of steel slag cracking and residual neat recovering system, it is real
The cracking and waste heat recycling of steel slag are showed；It fully cracks steel slag and realizes steel slag waste heat recycling, reach energy-saving and environment-friendly purpose.
The technical solution adopted by the present invention to solve the technical problems is: a kind of steel slag cracking and residual neat recovering system, packet
Include slag transport storage device and steel slag cracking furnace；
Wherein the slag transport storage device is connected with furnace body by feeder pipe and completes blanking, outsourcing under the effect of gravity
It is wrapped with insulating layer, heat of the heat-absorbing water pipe for distributing to the steel slag of storage is provided between insulating layer and slag transport storage device
Amount is recycled, while the slag transport storage device has quantitative coveyer structure, can quantify and convey steel slag into furnace body；
The steel slag cracking furnace includes furnace body, is equipped with bell at the top of furnace body, furnace body top side be located at furnace body oblique upper
The sealing of slag transport storage device is connected, and lower portion of furnace body is divided into discharge zone, and delay baffle is provided in discharge zone, and delay baffle is handed over
Mistake is fixed on inboard wall of furnace body and is formed with S-shaped delay path, while the veutro for the baffle that is delayed is provided with sparge pipe, on sparge pipe
Water jet is offered, the steam openings being connected to furnace body are offered below feed inlet, steam openings are connected with steam pipe, furnace
Body is wound with cold water pipe from the bottom to top, and cold water pipe extends upwardly to bell by furnace body again and is fixed on the inner wall of bell, thus
Realize out the water in cold water pipe by low-temperature heat to high temperature.
It is provided with connected bonnet integrated with bell on the bell and is covered on by bonnet and realizes the two at the top of furnace body
Sealing connect, radiation loss can be reduced by being then enclosed with insulating layer on the outside of furnace body and bell.
The feeder pipe flare is provided with electric control valve control blanking on feeder pipe.The insulating layer is pressed from both sides by outside
Tool is fixed or welds inside insulating layer riveting method and furnace body is realized and fixed.
Flip lid is provided at the top of the bell for sealing and deflating once in a while.
The cold water pipe passes through section and is fixed in the heat-resisting steel sheet and plate of convex shape, and screw hole is provided on heat-resisting steel sheet and plate,
By cooperating for heat-resisting steel sheet and plate and outlet pipe to be fixed on furnace body or bell wall with bolt.
In bucket shape and it is provided with discharge port in the discharge zone bottom, discharge outlet is fixed with reciprocating unloader.
The length of the delay baffle is 1000~1800mm, and delay baffle can be arranged using any direction.
The beneficial effects of the present invention are: it is wrapped in steel slag conveying and storage device and steel slag cracking furnace body using water pipe
It realizes that using water be medium by the heat absorption of hot steel slag, obtains the hot water of higher temperature for other processes use, while
The hot steam generated when to hot steel slag cooling also can be recycled, and fall distance by extending hot steel slag, as much as possible to make heat
State steel slag generates hot steam, which not only cleavable steel slag but also can more fully hereinafter recycle steel slag waste heat, and reach energy-saving and environment-friendly mesh
's.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram；
In figure: 1- furnace body；2- bell；3- feed inlet；4- slag transport storage device；5- delay baffle；6- sparge pipe；7- water spray
Mouthful；8- steam pipe；9- bonnet；10- heat-resisting steel sheet and plate；11- screw hole；12- cold water pipe；13- heat-absorbing water pipe.
Fig. 2 is 4 top view of slag transport storage device；
Fig. 3 is outlet pipe and 10 connection schematic diagram of heat-resisting steel sheet and plate.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to FIG. 1 to FIG. 3,
A kind of steel slag cracking and residual neat recovering system, including slag transport storage device 4 and steel slag cracking furnace；
Wherein the slag transport storage device 4 is connected with furnace body 1 by feeder pipe and completes blanking under the effect of gravity, outside
It is enclosed with insulating layer, heat-absorbing water pipe 13 is provided between insulating layer and slag transport storage device 4 for dissipating to the steel slag of storage
The heat of hair is recycled, while the slag transport storage device 4 has quantitative coveyer structure, can quantify defeated into furnace body 1
Send steel slag；
The steel slag cracking furnace includes furnace body 1, is equipped with bell 2 at the top of furnace body 1,1 top side of furnace body be located at furnace body 1 tiltedly on
The sealing of slag transport storage device 4 of side is connected, and 1 lower part of furnace body is divided into discharge zone, and delay baffle 5 is provided in discharge zone, is prolonged
When baffle 5 be staggeredly fixed on 1 inner wall of furnace body and be formed with S-shaped delay path, while the veutro for the baffle 5 that is delayed is provided with water spray
Pipe 6 offers water jet 7 on sparge pipe 6, the steam openings being connected to furnace body 1, steam openings is offered below feed inlet 3
It is connected with steam pipe 8, furnace body 1 is wound with cold water pipe 12 from the bottom to top, and cold water pipe 12 extends upwardly to bell 2 by furnace body 1 again
And be fixed on the inner wall of bell 2, to realize out water in cold water pipe 12 by low-temperature heat to high temperature.
It is provided with connected bonnet 9 integrated with bell 2 on the bell 2 and is covered at the top of furnace body 1 by bonnet 9 and realizes
The sealing of the two connects, and is then enclosed with insulating layer in furnace body 1 and 2 outside of bell and can reduce radiation loss.
The feeder pipe flare is provided with electric control valve control blanking on feeder pipe.The insulating layer is pressed from both sides by outside
Tool is fixed or welds inside insulating layer riveting method and furnace body 1 is realized and fixed.
Flip lid is provided with for sealing and deflating once in a while at the top of the bell 2.
The cold water pipe 12 is fixed by section in the heat-resisting steel sheet and plate 10 of convex shape, is provided on heat-resisting steel sheet and plate 10
Screw hole 11, by cooperating for heat-resisting steel sheet and plate 10 and outlet pipe to be fixed on 2 wall of furnace body 1 or bell with bolt.
In bucket shape and it is provided with discharge port in the discharge zone bottom, discharge outlet is fixed with reciprocating unloader.
The length of the delay baffle 5 is 1000~1800mm, and delay baffle 5 can be arranged using any direction.
1 slag transport storage device of furnace body 1 furnace body, 1 bell, 2 furnace body, 1 furnace body, 4 furnace body 1 delay delay 5 furnace body of baffle of baffle 5
1 delay 5 sparge pipe of baffle, 6 sparge pipe, 6 water jet, 7 feed inlet, 3 furnace body, 1 steam pipe, 8 furnace body, 1 cold water pipe, 12 cold water pipe, 12 furnace body 1
4 furnace body of bell 2 bell, 2 cold water pipe, 12 bell, 2 bell, 2 bonnet, 9 bonnet, 9 furnace body, 1 furnace body, 1 bell, 2 slag transport storage device, 1 steel
It is resistance to that slag transports 4 heat-absorbing water pipe of storage device, 13 slag transport storage device, 4 furnace body, 1 furnace body, 1 bell, 2 cold water pipe, 12 heat-resisting steel sheet and plates 10
11 heat-resisting steel sheet and plate of hot 10 screw hole of steel plate, 10 furnace body, 1 bell 2 is delayed, and the invention is not limited to above-mentioned implementations for the delay of baffle 5 baffle 5
Mode, if not departing from the spirit and scope of the present invention to various changes or modifications of the invention, if these changes or modifications
Belong within the scope of claim and equivalent technologies of the invention, then the present invention is also intended to encompass these modification and variations.
Claims (7)
1. a kind of steel slag cracking and residual neat recovering system, it is characterised in that: including slag transport storage device and steel slag cracking furnace；
Wherein the slag transport storage device is connected with furnace body by feeder pipe and completes blanking, outsourcing under the effect of gravity
It is wrapped with insulating layer, heat of the heat-absorbing water pipe for distributing to the steel slag of storage is provided between insulating layer and slag transport storage device
Amount is recycled, while the slag transport storage device has quantitative coveyer structure, can quantify and convey steel slag into furnace body；
The steel slag cracking furnace includes furnace body, is equipped with bell at the top of furnace body, furnace body top side be located at furnace body oblique upper
The sealing of slag transport storage device is connected, and lower portion of furnace body is divided into discharge zone, and delay baffle is provided in discharge zone, and delay baffle is handed over
Mistake is fixed on inboard wall of furnace body and is formed with S-shaped delay path, while the veutro for the baffle that is delayed is provided with sparge pipe, on sparge pipe
Water jet is offered, the steam openings being connected to furnace body are offered below feed inlet, steam openings are connected with steam pipe, furnace
Body is wound with cold water pipe from the bottom to top, and cold water pipe extends upwardly to bell by furnace body again and is fixed on the inner wall of bell, thus
Realize out the water in cold water pipe by low-temperature heat to high temperature.
2. steel slag cracking as described in claim 1 and residual neat recovering system, it is characterised in that: be provided on the bell and bell
The connected bonnet of integration is simultaneously connected by the sealing that bonnet covers on both realizations at the top of furnace body, is then wrapped on the outside of furnace body with bell
Radiation loss can be reduced by being wrapped with insulating layer.
3. steel slag cracking as described in claim 1 and residual neat recovering system, it is characterised in that: the feeder pipe flare, under
Electric control valve control blanking is provided in expects pipe；The insulating layer is fixed or inside insulating layer with welding by outer clamp
Riveting method and furnace body, which are realized, to be fixed.
4. steel slag cracking as described in claim 1 and residual neat recovering system, it is characterised in that: be provided at the top of the bell
Flip lid is for sealing and deflating once in a while.
5. steel slag cracking as described in claim 1 and residual neat recovering system, it is characterised in that: the cold water pipe is in by section
The heat-resisting steel sheet and plate of convex shape is fixed, and screw hole is provided on heat-resisting steel sheet and plate, by with bolt cooperate to by heat-resisting steel sheet and plate with
Outlet pipe is fixed on furnace body or bell wall.
6. steel slag cracking as described in claim 1 and residual neat recovering system, it is characterised in that: in the discharge zone bottom in bucket shape
And it is provided with discharge port, discharge outlet is fixed with reciprocating unloader.
7. steel slag cracking as described in claim 1 and residual neat recovering system, it is characterised in that: it is described delay baffle length be
1000~1800mm, delay baffle can be arranged using any direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065749.7A CN109628668B (en) | 2019-01-24 | 2019-01-24 | Steel slag cracking and waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065749.7A CN109628668B (en) | 2019-01-24 | 2019-01-24 | Steel slag cracking and waste heat recovery system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109628668A true CN109628668A (en) | 2019-04-16 |
| CN109628668B CN109628668B (en) | 2024-04-02 |
Family
ID=66063287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910065749.7A Active CN109628668B (en) | 2019-01-24 | 2019-01-24 | Steel slag cracking and waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109628668B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113462830A (en) * | 2021-07-09 | 2021-10-01 | 内蒙古高等级公路建设开发有限责任公司 | Hot slag cracking processing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277273A (en) * | 1976-10-12 | 1981-07-07 | Edouard Legille | Treatment and handling of metallurgical slag |
| JPH10152710A (en) * | 1996-11-22 | 1998-06-09 | Nippon Steel Corp | Equipment for recovering waste heat or smelting reduction furnace |
| CN201347434Y (en) * | 2009-01-23 | 2009-11-18 | 郭心岭 | Steel slag cracking furnace |
| CN204022847U (en) * | 2014-07-08 | 2014-12-17 | 中冶南方工程技术有限公司 | Steel slag waste heat recovery system |
| CN208382918U (en) * | 2018-05-22 | 2019-01-15 | 江苏华窑光宇科技有限公司 | A kind of shuttle kiln helical heat exchanger |
| CN209702782U (en) * | 2019-01-24 | 2019-11-29 | 韶关市曲江盛大冶金渣环保科技开发有限公司 | A kind of steel slag cracking and residual neat recovering system |
-
2019
- 2019-01-24 CN CN201910065749.7A patent/CN109628668B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277273A (en) * | 1976-10-12 | 1981-07-07 | Edouard Legille | Treatment and handling of metallurgical slag |
| JPH10152710A (en) * | 1996-11-22 | 1998-06-09 | Nippon Steel Corp | Equipment for recovering waste heat or smelting reduction furnace |
| CN201347434Y (en) * | 2009-01-23 | 2009-11-18 | 郭心岭 | Steel slag cracking furnace |
| CN204022847U (en) * | 2014-07-08 | 2014-12-17 | 中冶南方工程技术有限公司 | Steel slag waste heat recovery system |
| CN208382918U (en) * | 2018-05-22 | 2019-01-15 | 江苏华窑光宇科技有限公司 | A kind of shuttle kiln helical heat exchanger |
| CN209702782U (en) * | 2019-01-24 | 2019-11-29 | 韶关市曲江盛大冶金渣环保科技开发有限公司 | A kind of steel slag cracking and residual neat recovering system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113462830A (en) * | 2021-07-09 | 2021-10-01 | 内蒙古高等级公路建设开发有限责任公司 | Hot slag cracking processing device |
| CN113462830B (en) * | 2021-07-09 | 2022-04-29 | 内蒙古高等级公路建设开发有限责任公司 | Hot slag cracking processing device |
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| Publication number | Publication date |
|---|---|
| CN109628668B (en) | 2024-04-02 |
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