CN105624346A - Slag buffering system with flow control function - Google Patents
Slag buffering system with flow control function Download PDFInfo
- Publication number
- CN105624346A CN105624346A CN201610140148.4A CN201610140148A CN105624346A CN 105624346 A CN105624346 A CN 105624346A CN 201610140148 A CN201610140148 A CN 201610140148A CN 105624346 A CN105624346 A CN 105624346A
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- China
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- slag
- buffering system
- control function
- flow control
- outer pipe
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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
-
- 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)
- Furnace Details (AREA)
Abstract
The invention discloses a slag buffering system with a flow control function. The slag buffering system comprises a slag ladle shell, stopper rods, stopper rod control mechanisms and slag falling pipes. A slag inlet is formed in the upper portion of the slag ladle shell, and a plurality of water openings are formed in the bottom of the slag ladle shell. The slag falling pipes with flow meters are arranged at the lower portions of the water openings. Each water opening is correspondingly provided with a stopper rod. The stopper rods are arranged over the corresponding water openings. The stopper rod control mechanisms are used for controlling the circulation area between the stopper rods and the water openings. Slag flows into a slag ladle from a slag inlet above the slag ladle and is stored in the slag ladle, and the slag flows out of the slag falling pipes from the water openings in the bottom of the slag ladle. The flow of the slag is controlled by controlling the circulation area through cooperation of the stopper rods and the water openings. The flow meters are arranged on the slag falling pipes to detect the flow of the slag, and detection signals are fed back to the stopper rod control mechanisms. According to the slag buffering system, the temporary slag storage function and the flow control function are achieved, the following pelletization process can be continuously and stably conducted on the slag, and the slag buffering system can be widely applied to a slag pelletization waste heat recycling system.
Description
Technical field
The present invention relates to melting slag waste heat recovery technology field, in particular to a kind of slag buffering system with flow control function.
Background technology
China is global maximum Iron and Steel Production state at present, and iron and steel output keeps the first in the world in continuous 17 years. Within 2014, Chinese pig iron output reaches 7.11 hundred million tons, accounts for the 60% of Gross World Product, can produce to contain the slag of huge heat in the process of manUfaCtUre of pig iron simultaneously. The tapping temperature of slag is generally between 1400��1550 DEG C, and every ton of slag is containing (1260��1880) �� 103The aobvious heat of kJ, is equivalent to 60kg standard coal. Under the existing ironmaking technology of China, often producing 1 ton of pig iron by-product, 0.3 ton of slag, calculate with current China pig iron output 7.11 hundred million tons, can amount to the slag producing more than 2.13 hundred million tons, its aobvious heat is equivalent to 1,278 ten thousand tons of standard coals.
Water slag method is the most common Treating Methods for BF Slag of current China. Release a large amount of water vapour when slag is lowered the temperature by water slag method, do not reclaim the high-quality residual heat resources contained by blast furnace slag; Discharge a large amount of H simultaneously2S and SO2Gas, along with steam is drained in environment, causes the environmental problems such as acid rain; Waste great lot of water resources, and extra energy consumption. These processing modes can not adapt to the active demand of current steel industry energy-saving and emission-reduction. A kind of new technology efficient, free of contamination must be sought blast furnace slag waste heat resource is carried out efficient recovery. The present invention is granulated recovery system based on high-temperature slag revolving cup, the aobvious heat of high temperature of slag is reclaimed. The buffering of slag and flow control are rings of system core, so that the follow-up granulating continous-stable of slag carries out.
Summary of the invention
It is an object of the invention to provide a kind of slag buffering system with flow control function, waste serious problem to overcome current slag high-quality residual heat resources. The present invention realizes the temporary function of slag and flow control function, makes slag continous-stable carry out follow-up granulating, can be widely used in slag granulating residual neat recovering system.
In order to realize above-mentioned purpose, the technical solution used in the present invention is:
With a slag buffering system for flow control function, comprise cinder ladle shell, plug rod, stopper control mechanism and slag dropping tube; Slag inlet is arranged at the top of cinder ladle shell, and bottom is provided with some mouths of a river, and bottom, the mouth of a river is provided with the slag dropping tube of band under meter; A mouth of a river correspondence arranges a plug rod; Plug rod is arranged at the surface at the corresponding mouth of a river; Stopper control mechanism is for controlling the flow area filled between rod and the mouth of a river.
Further, cinder ladle shell is provided with temperature measuring equipment; The top of cinder ladle shell is provided with noncontact formula level monitoring device.
Further, plug rod is solid plug rod.
Further, plug rod is hollow tubular plug rod; Hollow tubular plug rod comprises outside thermofin and is arranged at the plug caput bottom thermofin, thermofin inner concentric, is interval with metal outer pipe and metal inner pipe; The lower port of metal inner pipe is connected with metal outer pipe, the lower end sealing of metal outer pipe, and upper end is provided with hot-blast outlet; Metal inner pipe top is provided with cold wind import.
Further, cold wind enters metal inner pipe from cold wind import, enters and carry out heat exchange metal outer pipe and form hot blast and discharge from the hot-blast outlet of metal outer pipe upper end bottom metal inner pipe.
Further, metal outer pipe inside is positioned at plug caput side and is furnished with thermopair.
Further, metal inner pipe is enclosed within the middle of metal outer pipe, connects by connection rib and forms hollow layout.
Further, thermofin is by the drag hook of setting on metal outer pipe outer wall and pin fastener and metal outer pipe outer wall.
Further, the mouth of a river is provided with the slide gate nozzle for turning off the mouth of a river.
Further, slag dropping tube external parcel lagging material.
The technical scheme of the present invention has following useful effect:
(1) in the present invention, cinder ladle can meet the temporary function of slag, ensures that slag physical property is in claimed range, it is achieved the continuous long-time running of slag granulating, it is achieved slag granulating industrialization.
(2) rod of the plug in the present invention, metal inner pipe is enclosed within the middle of metal outer pipe, forms hollow and arranges, can ensure that metal is cooled to suitable temp. Being furnished with drag hook and pin in metal outer pipe, refractory materials is laid in outer pipe surface and forms thermofin, can be effectively heat insulation, reduces metallic walls surface temperature. Drag hook and pin can ensure refractory materials mechanical property, can greatly extend and fill in excellent work-ing life. Due to cooling effect, thermofin outside surface may have skim and solidify slag, with slag anti-slag, effectively reduces the corrosion of outer temperature-resistant material, improves its work-ing life further.
(3) flow control of the present invention; flow area between plug caput and the mouth of a river is changed by stopper control mechanism; can greatly eliminate the fluctuation causing slag flow because of the change of self liquid level of slag in cinder ladle, make whole process stability of flow, meet the flow requirement of follow-up granulation phase.
(4) under meter of the present invention, can associate granulation system motor rotating speed, reaches optimum granulation effect.
(5) the bag side of covering of the present invention level monitoring device, slag inlet above closing in time of can reporting to the police when slag liquid level reaches warning liquid level, ensures have enough safety highly to prevent the accidents such as excessive slag from occurring in cinder ladle, it is to increase the security of operation.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Fig. 1 is the structural representation of a kind of slag buffering system with flow control function;
Fig. 2 is a kind of plug rod for controlling liquid slag flow;
Label in schematic diagram illustrates:
1, cold wind import; 2, hot-blast outlet; 3, metal inner pipe; 4, metal outer pipe; 5, thermofin; 6, the mouth of a river; 7, caput is filled in; 8, thermopair; 9, connection rib; 10, slag dropping tube; 11, under meter; 12, slide gate nozzle and control device; 13, stopper control device; 14, level monitoring device; 15, slag inlet; 16, temperature-detecting device; 17, cinder ladle shell.
Embodiment
Refer to shown in Fig. 1 and Fig. 2, a kind of slag buffering system with flow control function of the present invention, comprise cinder ladle shell 17, plug rod, stopper control mechanism 13, slag dropping tube 10, slide gate nozzle and controlling organization 12, level monitoring device 14 and under meter 11.
Cinder ladle shell 17 top has one or more mouth of a river 6 bottom slag inlet 15, cinder ladle shell 17 is made up of high temperature material. Slag flows into from slag inlet 15 above cinder ladle, and is temporary in cinder ladle, and slag flow to lower section granulation system from slag dropping tube 10 bottom cinder ladle shell 17.
Slag dropping tube 10 outer wall installs under meter, slag flow in detector tube, and will detect signal feedback to stopper control mechanism 13. When flow is excessive, stopper control mechanism 13 reduces plug rod height, reduces the flow area between plug caput 7 and the mouth of a river 6, and then reduces slag flow. Plug rod is solid bar-shaped or hollow tubular. Solid plug rod can use the integral stopper rod etc. of existing steel mill tundish plug rod used or the making of other high temperature materials.
For hollow tubular plug rod, it comprises outside thermofin 5 and is arranged at the plug caput 7 bottom thermofin 5, thermofin 5 inner concentric, is interval with metal outer pipe 4 and metal inner pipe 3; Metal outer pipe 4 and metal inner pipe 3 connect by connection rib 9 and form hollow layout; The lower port of metal inner pipe 3 is connected with metal outer pipe 4, metal outer pipe 4 times end sealings, and upper end is provided with hot-blast outlet 2; Metal inner pipe 3 top is provided with cold wind import 1. Cold wind enters metal inner pipe 3 from cold wind import 1, enter bottom metal inner pipe 3 metal outer pipe 4 carry out heat exchange formed hot blast discharge from the hot-blast outlet of metal outer pipe 4 upper end; Arrange thermopair 8 near plug caput, for monitoring temperature, by the flow of controlled cooling model fluid, make the temperature range that outer wall keeps suitable, ensure the material property of metal outer pipe 4. Slag dropping tube 10 outer wall parcel lagging material, ensures that slag dropping process physical property changes less. Shutoff effect when slide gate nozzle is used for emergency situation, ensures that slag is not outer and rushes down. Liquid level in the noncontact formula level monitoring device 14 Real-Time Monitoring cinder ladle on cinder ladle top, and slag inlet 15 above closedown in time of reporting to the police when slag liquid level reaches warning liquid level, ensure have enough safety highly to prevent the accidents such as excessive slag from occurring in cinder ladle. The temperature measuring equipment 16 in cinder ladle wall face detects its slag temperature, and feeds back to granulation system, in time adjustment motor rotating speed.
It is last it is noted that above enforcement mode is only in order to illustrate the present invention and unrestricted technical scheme described in the invention; Therefore, although this specification sheets with reference to each above-mentioned enforcement mode to present invention has been detailed explanation, but, it will be understood by those within the art that, still the present invention can be modified or equivalent replace; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in the right of the present invention.
Claims (10)
1. the slag buffering system with flow control function, it is characterised in that: comprise cinder ladle shell (17), plug rod, stopper control mechanism (13) and slag dropping tube (10);
Slag inlet (15) is arranged at the top of cinder ladle shell (17), and bottom is provided with some mouths of a river (6), and the mouth of a river (6) bottom is provided with the slag dropping tube (10) of band under meter (11);
The mouth of a river (6) correspondence arranges a plug rod; Plug rod is arranged at the surface at the corresponding mouth of a river;
Stopper control mechanism (13) is for controlling the flow area filled between rod and the mouth of a river (6).
2. a kind of slag buffering system with flow control function according to claim 1, it is characterised in that: cinder ladle shell (17) is provided with temperature measuring equipment (16); The top of cinder ladle shell (17) is provided with noncontact formula level monitoring device.
3. a kind of slag buffering system with flow control function according to claim 1, it is characterised in that: plug rod is solid plug rod.
4. a kind of slag buffering system with flow control function according to claim 1, it is characterised in that: plug rod is hollow tubular plug rod; Hollow tubular plug rod comprises outside thermofin (5) and is arranged at the plug caput (7) bottom thermofin (5), thermofin (5) inner concentric, be interval with metal outer pipe (4) and metal inner pipe (3); The lower port of metal inner pipe (3) is connected with metal outer pipe (4), the lower end sealing of metal outer pipe (4), and upper end is provided with hot-blast outlet (2); Metal inner pipe (3) top is provided with cold wind import (1).
5. a kind of slag buffering system with flow control function according to claim 4, it is characterized in that: cold wind enters metal inner pipe (3) from cold wind import (1), from metal inner pipe (3) bottom enter metal outer pipe (4) carries out heat exchange formed hot blast discharge from the hot-blast outlet (2) of metal outer pipe (4) upper end.
6. a kind of slag buffering system with flow control function according to claim 4, it is characterised in that: metal outer pipe (4) inside is positioned at plug caput side and is furnished with thermopair (8).
7. a kind of slag buffering system with flow control function according to claim 4, it is characterised in that: metal inner pipe is enclosed within the middle of metal outer pipe, connects by connection rib and forms hollow layout.
8. a kind of slag buffering system with flow control function according to claim 4, it is characterised in that: thermofin (5) is by the drag hook of setting on metal outer pipe (4) outer wall and pin fastener and metal outer pipe (4) outer wall.
9. a kind of slag buffering system with flow control function according to claim 1, it is characterised in that: the mouth of a river is provided with the slide gate nozzle for turning off the mouth of a river.
10. a kind of slag buffering system with flow control function according to claim 1, it is characterised in that: slag dropping tube (10) external parcel lagging material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610140148.4A CN105624346A (en) | 2016-03-11 | 2016-03-11 | Slag buffering system with flow control function |
| PCT/CN2017/074803 WO2017152781A1 (en) | 2016-03-11 | 2017-02-24 | Slag buffer system having flow control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610140148.4A CN105624346A (en) | 2016-03-11 | 2016-03-11 | Slag buffering system with flow control function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105624346A true CN105624346A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610140148.4A Pending CN105624346A (en) | 2016-03-11 | 2016-03-11 | Slag buffering system with flow control function |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105624346A (en) |
| WO (1) | WO2017152781A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702046A (en) * | 2017-02-28 | 2017-05-24 | 西安交通大学 | Granulator driving and cooling device |
| CN106702045A (en) * | 2017-02-28 | 2017-05-24 | 西安交通大学 | Control system for dry centrifugal granulation of liquid slag and method |
| CN106868238A (en) * | 2017-02-28 | 2017-06-20 | 西安交通大学 | A kind of pelletizer system for molten slag granulation |
| CN106940140A (en) * | 2017-02-28 | 2017-07-11 | 西安交通大学 | A kind of two grades of molten slag caching systems with flow temperature monitoring and control function |
| CN106939363A (en) * | 2017-02-28 | 2017-07-11 | 西安交通大学 | For molten slag dry-type centrifugal granulation and the system and control method of waste heat recovery |
| WO2017152781A1 (en) * | 2016-03-11 | 2017-09-14 | 西安交通大学 | Slag buffer system having flow control function |
| CN108277310A (en) * | 2018-02-26 | 2018-07-13 | 西安交通大学 | A kind of operating method of the molten slag volume control device with quick-replaceable and accident treatment function |
| CN108300822A (en) * | 2018-02-26 | 2018-07-20 | 西安交通大学 | A kind of molten slag volume control device with quick-replaceable and accident treatment function |
| CN108424988A (en) * | 2018-02-26 | 2018-08-21 | 西安交通大学 | A kind of molten slag buffer storage with concurrent heating and pre- hot function |
| CN109777519A (en) * | 2019-03-27 | 2019-05-21 | 东北大学 | A kind of blast furnace cinder waste heat driving gasification reaction system |
| CN111074020A (en) * | 2019-12-04 | 2020-04-28 | 西安交通大学 | Integrated liquid slag caching and flow measurement and control device |
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| SU581143A1 (en) * | 1976-07-20 | 1977-11-25 | Aleshin Aleksandr A | Slag bin |
| CN102319885A (en) * | 2011-09-28 | 2012-01-18 | 中冶南方工程技术有限公司 | Continuous casting method and device for double-nozzle cast ultra-thick plate blank |
| CN102424867A (en) * | 2011-12-31 | 2012-04-25 | 钢铁研究总院 | Slag granulating and waste heat recovery device |
| CN202377525U (en) * | 2011-12-08 | 2012-08-15 | 武钢集团昆明钢铁股份有限公司 | Device for cooling stopper of continuous casting machine |
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| GB2263427A (en) * | 1992-01-09 | 1993-07-28 | Thor Ceramics Ltd | Refractory stopper rod with a lined channel |
| CN103849697B (en) * | 2013-08-13 | 2015-06-10 | 上海耀秦冶金设备技术有限公司 | Molten slag treatment device and method for direct production of mineral wool or microcrystal product by utilizing molten slag of blast furnace |
| CN105624346A (en) * | 2016-03-11 | 2016-06-01 | 西安交通大学 | Slag buffering system with flow control function |
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2016
- 2016-03-11 CN CN201610140148.4A patent/CN105624346A/en active Pending
-
2017
- 2017-02-24 WO PCT/CN2017/074803 patent/WO2017152781A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU581143A1 (en) * | 1976-07-20 | 1977-11-25 | Aleshin Aleksandr A | Slag bin |
| CN102319885A (en) * | 2011-09-28 | 2012-01-18 | 中冶南方工程技术有限公司 | Continuous casting method and device for double-nozzle cast ultra-thick plate blank |
| CN202377525U (en) * | 2011-12-08 | 2012-08-15 | 武钢集团昆明钢铁股份有限公司 | Device for cooling stopper of continuous casting machine |
| CN102424867A (en) * | 2011-12-31 | 2012-04-25 | 钢铁研究总院 | Slag granulating and waste heat recovery device |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152781A1 (en) * | 2016-03-11 | 2017-09-14 | 西安交通大学 | Slag buffer system having flow control function |
| CN106868238B (en) * | 2017-02-28 | 2019-04-12 | 西安交通大学 | One kind being used for the granulated granulator system of molten slag |
| CN106702046A (en) * | 2017-02-28 | 2017-05-24 | 西安交通大学 | Granulator driving and cooling device |
| WO2018157452A1 (en) * | 2017-02-28 | 2018-09-07 | 西安交通大学 | Secondary liquid-state slag temporary storage system with flow temperature monitoring and controlling functions |
| CN106702046B (en) * | 2017-02-28 | 2019-02-05 | 西安交通大学 | A kind of driving of granulator and cooling device |
| CN106702045A (en) * | 2017-02-28 | 2017-05-24 | 西安交通大学 | Control system for dry centrifugal granulation of liquid slag and method |
| CN106868238A (en) * | 2017-02-28 | 2017-06-20 | 西安交通大学 | A kind of pelletizer system for molten slag granulation |
| CN106940140B (en) * | 2017-02-28 | 2018-09-04 | 西安交通大学 | A kind of two level molten slag caching system with flow temperature monitoring and control function |
| CN106939363B (en) * | 2017-02-28 | 2019-10-11 | 西安交通大学 | For molten slag dry-type centrifugal granulation and the system and control method of waste heat recycling |
| US11396683B2 (en) * | 2017-02-28 | 2022-07-26 | Xi'an Jiaotong University | Control system and method for dry centrifugal granulation of liquid slag |
| CN106940140A (en) * | 2017-02-28 | 2017-07-11 | 西安交通大学 | A kind of two grades of molten slag caching systems with flow temperature monitoring and control function |
| CN106939363A (en) * | 2017-02-28 | 2017-07-11 | 西安交通大学 | For molten slag dry-type centrifugal granulation and the system and control method of waste heat recovery |
| CN108277310A (en) * | 2018-02-26 | 2018-07-13 | 西安交通大学 | A kind of operating method of the molten slag volume control device with quick-replaceable and accident treatment function |
| WO2019161724A1 (en) * | 2018-02-26 | 2019-08-29 | 西安交通大学 | Method for operating liquid slag flow control device having functions of rapid replacement and handling accidents |
| CN108424988A (en) * | 2018-02-26 | 2018-08-21 | 西安交通大学 | A kind of molten slag buffer storage with concurrent heating and pre- hot function |
| CN108300822A (en) * | 2018-02-26 | 2018-07-20 | 西安交通大学 | A kind of molten slag volume control device with quick-replaceable and accident treatment function |
| CN109777519A (en) * | 2019-03-27 | 2019-05-21 | 东北大学 | A kind of blast furnace cinder waste heat driving gasification reaction system |
| CN111074020A (en) * | 2019-12-04 | 2020-04-28 | 西安交通大学 | Integrated liquid slag caching and flow measurement and control device |
| WO2021109326A1 (en) * | 2019-12-04 | 2021-06-10 | 西安交通大学 | Integrated liquid slag buffering and flow measurement and control apparatus |
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| WO2017152781A1 (en) | 2017-09-14 |
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Application publication date: 20160601 |