CN201785403U - Reclaiming system for high-temperature melting slag - Google Patents
Reclaiming system for high-temperature melting slag Download PDFInfo
- Publication number
- CN201785403U CN201785403U CN2010202543264U CN201020254326U CN201785403U CN 201785403 U CN201785403 U CN 201785403U CN 2010202543264 U CN2010202543264 U CN 2010202543264U CN 201020254326 U CN201020254326 U CN 201020254326U CN 201785403 U CN201785403 U CN 201785403U
- Authority
- CN
- China
- Prior art keywords
- slag
- temperature molten
- molten slag
- heat
- water jacket
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- Y02P10/20—Recycling
-
- 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
Landscapes
- Furnace Details (AREA)
Abstract
The utility model relates to a reclaiming system for high-temperature melting slag, which comprises a treatment tower, a heat pipe and a water jacket, wherein the treatment tower is provided with a slag feeding port, a slag discharging port and a cold air inlet, a spray nozzle is arranged near the slag feeding port, a part of the heat pipe is arranged in the treatment tower, and the other part of the heat pipe is disposed in the water jacket which is connected with the spray nozzle. By using high-pressure steam to impact the high-temperature liquid melting slag, the reclaiming system for high-temperature melting slag reduces oxidation rate of steel scraps and lays a solid foundation for reclaiming steel scraps as much as possible in the following steps. Further, the reclaiming system for high-temperature melting slag utilizes heat exchange between slag particles and cold air to reclaim residual heat, hot air generated by the heat exchange passes through the heat pipe to exchange heat to produce steam, and the steam is further used for steam break in an internal recycling mode, thereby recycling sensible heat of high-temperature slag and obtaining high reclaiming efficiency of residual heat.
Description
Technical field
The utility model relates to high-temperature molten slag recovery technology field, relate in particular to the high-temperature molten slag recovery system, be mainly used in the processing of high-temperature liquid state slag, to reclaim iron and steel scrap, sensible heat and residue resource wherein, the recycling that is particularly useful for reclaiming converter slag, electric furnace slag, blast furnace slag and open hearth slag etc. as steel industry.
Background technology
The temperature of the high-temperature molten slag of steel industry generally reaches 1600 ℃, contain a certain proportion of iron and steel scrap in the slag, waste residue behind the recovery iron and steel scrap can also or be used to pave the way as the raw material of producing cement, this shows, is containing a large amount of sensible heats, iron and steel scrap and residue resource in the high-temperature molten slag.Producing about 100,000 tons of slags per year with a 60T converter is example, and about 150,000,000,000 KJ of the sensible heat heat that it contains (kilojoule) can produce about 3.9 ten thousand tons of steam every year; Iron and steel scrap content can reach 10% in the slag, if all reclaim then 10,000 tons of annual recyclable steel scraps; The annual production of its waste residue is about more than 90,000 tons, if can improve its value added, interests are also very considerable.
Usually adopt the flush slag system to come high-temperature molten slag is handled traditionally, be that high-temperature molten slag enters detritus pool earlier after the high pressure water shrend, be provided as production cement or the raw material of paving the way use after afterwards the grain slag in the detritus pool being salvaged out dehydration, and first being sent into by the pump pressurization then after filtration of the water in the detritus pool cooled off in the cooling tower, be used for again afterwards high-temperature molten slag is carried out shrend, can realize recycling of water like this.Water loss must be replenished by new water.There are a lot of problems in this flush slag system, and wherein maximum problem is that water consumption is too many, secondly is that the flush slag process has been wasted a large amount of heats, and surrounding environment is also brought pollution.
All drawbacks in view of traditional water flushing cinder technology; people have proposed dry granulation and energy recovery technology thereof in recent years; its basic ideas are: utilize the mechanical force of mechanism that high-temperature molten slag is smashed; utilize the air solid impurity particle that smashes is cooled off afterwards again, and the warm air that has been heated is recycled its heat.For example; the Chinese invention patent 200610054467 of having authorized discloses a kind of liquid blast furnace slag heat recovering apparatus and method; its technical scheme is: molten blast furnace slag carries out earlier heat exchange in pelletizer; and then carry out heat through vibrating bed and reclaim for the second time; carry out the recovery for the third time of heat at last in the sulfuration bed, the heat energy of recovery is reused or energy transformation with the form of hot blast or generating.Dry granulation and energy recovery technology thereof are owing to adopt the mechanical force of mechanism that high-temperature molten slag is smashed; mechanism need be provided; and can not be directly used in usually the energy of the recovery of high-temperature molten slag sensible heat and to drive this mechanism; make the total system complex structure; the energy consumption height can not fully reclaim and utilize the sensible heat of high-temperature molten slag.
In addition, at present to the recovery technology of high-temperature molten slag, only reclaim wherein a kind of in sensible heat, steel scrap and the waste residue usually.Reclaim the melting slag sensible heat and adopt the dry granulation technology usually, reclaim steel scrap and adopt hot vexed slag technology usually, improve the waste residue added value and adopt wind crush method usually.The recyclable steel scrap 10% of the vexed slag of heat, the rate of recovery are more than 90%, and the slag particle degree that hot vexed slag method generates is little, but composition is very stable, also can be used as building material and use.The particle diameter of wind crush method waste residue product and materialization controllable component can be used as cement raw material and use.Though the independent use of above-mentioned the whole bag of tricks all can obtain good effect,, these three kinds of methods are incorporated in the same system, with sensible heat, steel scrap and the waste residue of abundant recovery high-temperature molten slag, also there is technical difficulty at present.
Summary of the invention
The utility model mainly solves and adopts mechanism that the technical problem of the sensible heat of high-temperature molten slag is smashed, can not fully be reclaimed and utilize to high-temperature molten slag in existing dry granulation and the heat recuperation technology thereof, proposes a kind of with the sensible heat recovery of high-temperature molten slag and the high temperature liquid slag recovery method that recycles.
In order to solve its technical problem, the utility model provides a kind of high-temperature molten slag recovery system, comprise treating column, heat pipe and water jacket, treating column is provided with slag inlet, slag notch and cool air inlet, be provided with nozzle near the described slag inlet, the part of described heat pipe is in described treating column, and another part is in water jacket, and water jacket connects nozzle.
The utility model impacts pyritous liquid molten slag from the high pressure steam of nozzle ejection, makes it broken and is cooled to than fine solid particles, has reduced the oxidation ratio of steel scrap, for the follow-up steel scrap that reclaims is as much as possible laid a good foundation; Enter the freezing air for the treatment of column and the vapour solid impurity particle after broken from cool air inlet and carry out heat exchange, the warm air that heat exchange generates through heat pipe heat exchanging to produce steam, steam again internal recycle to be used for vapour broken, realized the recycle of high-temperature molten slag sensible heat, adopt this high efficient heat exchanging element of heat pipe, improved waste heat recovery efficient.
Further, the utility model high-temperature molten slag recovery system also comprises shallow vexed pond, and shallow vexed pond is carried out shallow vexed slag to the solid impurity particle of discharging from slag notch and handled.Shallow vexed slag is handled the composition that can stablize solid impurity particle, more is suitable for the building materials utilization, and further lays the foundation for the subsequent recovery scrap iron.
Further, the utility model high-temperature molten slag recovery system also comprises the magnetic separation belt, and the scrap iron in the solid impurity particle after by the magnetic separation belt shallow vexed slag being handled filters out.About 10% steel scrap in the recyclable solid impurity particle of the utility model, the residue waste residue can be used as the outward transport of building materials purposes.Like this, the utility model sensible heat, iron and steel scrap and residue resource that can thoroughly reclaim high-temperature molten slag comprehensively and contained.
Description of drawings
Fig. 1 is the structural representation of the utility model high-temperature fusion slag system.
Below in conjunction with accompanying drawing the utility model is described in detail.
Embodiment
The utility model high-temperature molten slag recovery system comprises treating column 4, heat pipe 9 and water jacket 11, treating column 4 is provided with slag inlet 41, slag notch 42 and cool air inlet 43, slag inlet 41 places are provided with chute 2, nozzle 3 is near slag inlet 41, the part of heat pipe 9 is in treating column 4, and another part is in water jacket 11, and drum 12 is by pipe connection water jacket 11 and steam accumulator 13, steam accumulator 13 is by pipe connection nozzle 3, for nozzle 3 provides high pressure steam.
Sieve plate 6 is set in the treating column 4, and sieve plate 6 is between slag inlet 41 and slag notch 42 and tilt to place, and vibrator 5 is installed on the sieve plate 6.High-temperature molten slag enters the treating column 4 through deslagging jar 1 and chute 2 successively from slag-drip opening, impacts high-temperature molten slag from the high pressure steam of nozzle 3 ejections, high-temperature molten slag stream is smashed be granulated into thinner solid impurity particle.High pressure steam is preferably saturation steam, and pressure is between 0.4Mpa-1.2Mpa.When the pressure of high pressure steam was 0.6Mpa, the broken effect of vapour was relatively good, so the pressure of high pressure steam is preferably 0.6Mpa.Solid impurity particle after vapour is broken scatters and drops on the sieve plate 6, and solid impurity particle is transferred out treating column 4 under the oscillating action of vibrator 5.Adopt high pressure steam to impact pyritous liquid molten slag, make it broken and be cooled to, reduced the oxidation ratio of steel scrap, for the follow-up steel scrap that reclaims is as much as possible laid a good foundation than fine solid particles.
Gas blower 7 connects cool air inlet 43, and the freezing air that is provided by gas blower 7 enters treating column 4 from cool air inlet 43, and the solid impurity particle that is transferring out treating column 4 on freezing air and the sieve plate 6 carries out heat exchange, and freezing air becomes warm air after the heat exchange.Cool air inlet 43 makes the heat exchange of freezing air and solid impurity particle more abundant below sieve plate 6.In order to make follow-up shallow vexed slag obtain treatment effect preferably, the solid impurity particle temperature of discharging from slag notch 42 after the heat exchange is controlled between 200 ℃-500 ℃.
Treating column 4 is provided with baffle plate 8 in the bottom of heat pipe 9, and baffle plate 8 can be more than one or one.Warm air after the heat exchange is earlier through washing away heat pipe 9 again behind baffle plate 8 rough dustings.The part of heat pipe 9 is arranged in the treating column 4, another part is in water jacket 11, the decoration form of heat pipe 9 can be fork row or in-line arrangement, heat transfer effect by heat pipe 9, warm air in the treating column 4 is heated to be steam with the water in the water jacket 11, this steam gathers to a certain degree, becomes high pressure steam.Water jacket 11 can produce the saturation steam that pressure is 0.4Mpa-1.2Mpa.After flue gas through producing after heat pipe 9 heat exchange is discharged treating column 4, earlier through cyclonic separator 22 dedustings, and then by 23 dischargings of smoke evacuation tube.The high pressure steam of coming out from water jacket 11 enters steam accumulator 13 and also gathers together therein through behind the drum 12.Steam accumulator 13 is by pipe connection nozzle 3, wherein high pressure steam distributed sub-fraction be circulated to nozzle 3 and be used for the vapour granulation, all the other most of steam outer confession of can having more than needed.The utility model adopts supplementary unit to provide feedwater for water jacket 11, this supplementary unit comprises softening water tank 16, service pump 15 and the deoxygenator 14 that connects successively, deoxygenator 14 connects water jacket 11, and supplementary unit is used to water jacket 11 that high-quality feedwater is provided, to be used for production of steam.The utility model waste heat recovery process mainly is the heat exchange between solid impurity particle and the freezing air, the warm air that heat exchange generates through heat pipe heat exchanging to produce steam, steam again internal recycle to be used for vapour broken, realized the recycle of high-temperature molten slag sensible heat, adopt this high efficient heat exchanging element of heat pipe, improved waste heat recovery efficient.
Producing about 100,000 tons of slags per year with a 60T converter below is example, introduces technical and economic performance of the present utility model.
Main designing technique index is as follows:
(1) total quantity of slag is 100000 tons/year
(2) melting slag utilizes 1500 ℃ of temperature
(3) the whole temperature＜60 ℃ of slag
(4) generate the saturation steam parameter: the broken usefulness of vapour, and outer confession the more than needed
Pressure 0.60Mpa
158.83 ℃ of temperature
(5) vapour is broken with saturation steam amount 40m
3/ ton slag or 1.81 tons/hour
(6) more than needed outer: 3.96 tons/hour for saturation steam (0.6Mpa)
(7) reclaim 10000 tons/year of steel scraps
(8) can utilize 90000 tons/year of waste residue amounts
By conservative estimation, the economic benefit of its generation is as follows:
(1) reclaims steel scrap: 1000 yuan/ton=10,000,000 yuan/year of 10,000 tons of/year *
(2) recovered steam: 0.01 ten thousand yuan/ton of 7000 hours * of 3.96 tons of/hour *
=277 ten thousand yuan/year
(3) waste residue utilization: 15 yuan/ton=1,350,000 yuan/year of 90,000 tons of/year *
Add up to and reclaim income: 1,412 ten thousand yuan/year.
The foregoing description only is used for the understanding to the utility model design, is not to restriction of the present utility model, and design can also have the variation of many structures according to the utility model.For example, water jacket can directly connect nozzle by pipeline, and the high pressure steam of the broken usefulness of vapour can directly be provided by water jacket; Except sieve plate, the solid impurity particle after broken transfers out treating column with vapour can also to adopt belt etc.These structural simple change all belong to protection domain of the present utility model.
Claims (10)
1. high-temperature molten slag recovery system, it is characterized in that, described system comprises treating column, heat pipe and water jacket, described treating column is provided with slag inlet, slag notch and cool air inlet, be provided with nozzle near the described slag inlet, the part of described heat pipe is in described treating column, and another part is in described water jacket, and described water jacket connects described nozzle.
2. high-temperature molten slag recovery system according to claim 1 is characterized in that, described system also comprises shallow vexed pond, and described shallow vexed pond is carried out shallow vexed slag to the solid impurity particle of discharging from described slag notch and handled.
3. high-temperature molten slag recovery system according to claim 2 is characterized in that described system also comprises the magnetic separation belt.
4. high-temperature molten slag recovery system according to claim 1 is characterized in that, described treating column is provided with tilted-putted sieve plate between described slag inlet and slag notch, and vibrator is installed on the sieve plate.
5. high-temperature molten slag recovery system according to claim 4 is characterized in that described cool air inlet is below described sieve plate.
6. high-temperature molten slag recovery system according to claim 1 is characterized in that described system also comprises the gas blower that connects described cool air inlet.
7. high-temperature molten slag recovery system according to claim 1 is characterized in that described system also comprises drum and steam accumulator, and described drum connects water jacket and steam accumulator, and steam accumulator is by the described nozzle of pipe connection.
8. high-temperature molten slag recovery system according to claim 1, it is characterized in that, described system also is included as the supplementary unit that described water jacket provides feedwater, and described supplementary unit comprises softening water tank, service pump and the deoxygenator that connects successively, and described deoxygenator connects described water jacket.
9. high-temperature molten slag recovery system according to claim 1 is characterized in that, described treating column is provided with one or one with overhead gage.
10. high-temperature molten slag recovery system according to claim 1 is characterized in that, the decoration form of described heat pipe is fork row or in-line arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202543264U CN201785403U (en) | 2010-07-08 | 2010-07-08 | Reclaiming system for high-temperature melting slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202543264U CN201785403U (en) | 2010-07-08 | 2010-07-08 | Reclaiming system for high-temperature melting slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201785403U true CN201785403U (en) | 2011-04-06 |
Family
ID=43817377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202543264U Expired - Lifetime CN201785403U (en) | 2010-07-08 | 2010-07-08 | Reclaiming system for high-temperature melting slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201785403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443662A (en) * | 2011-10-14 | 2012-05-09 | 无锡市东方环境工程设计研究所有限公司 | Treatment device of liquid slag |
-
2010
- 2010-07-08 CN CN2010202543264U patent/CN201785403U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443662A (en) * | 2011-10-14 | 2012-05-09 | 无锡市东方环境工程设计研究所有限公司 | Treatment device of liquid slag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101476000B (en) | Thermal state steel slag waste heat recovery system and recovery method | |
| CN110982967B (en) | Method and device for realizing steel slag quenching and waste heat recovery by using water and carbon dioxide | |
| CN101886148A (en) | Method for recovering high-temperature molten slag | |
| CN101660014A (en) | Molten blast furnace slag sensible heat recovery method and device | |
| CN102864252A (en) | Slag granulation and sensible heat recovery method and system | |
| CN101921884A (en) | Blast furnace slag dry-type sensible heat recovery system and production process | |
| CN111471817A (en) | Gas quenching method for improving stability of steel slag and recovering physical heat of molten steel slag | |
| CN104404179A (en) | Liquid high temperature material waste heat recovery unit | |
| CN103820588A (en) | Quenching dry type broken fusion blast furnace slag sensible heat recovery method and device | |
| Yu et al. | A review of granulation process for blast furnace slag | |
| CN102864254A (en) | Method and system for molten slag granulation and sensible heat recovery | |
| CN109722496A (en) | A kind of dry-type pulverizing dross sensible heat recovery system and electricity generation system | |
| CN101886149A (en) | High temperature liquid slag recovery method | |
| CN101239384A (en) | Separation method of casting residue and molten steel | |
| CN103196124A (en) | Slag disposing technology device by evaporating pot method | |
| CN104388608A (en) | Dry granulation waste heat recovering and grinding treatment system | |
| CN104988256B (en) | Furnace slag waste heat recovery system | |
| CN102766707B (en) | Blast furnace slag residual heat utilization system based on coal gasification principle | |
| CN106145114A (en) | A kind of useless tungsten-cobalt hard alloy recovered WC and the method for metallic cobalt | |
| CN201785404U (en) | Recovering system for high-temperate molten slag | |
| CN104388611A (en) | Dry-type granulation treatment waste heat recovery system | |
| CN105063259B (en) | A kind of blast furnace cinder heat reclaim unit and application method | |
| KR20230042739A (en) | Process and apparatus for combined drying of dry granulation molten slag and sludge | |
| CN201785403U (en) | Reclaiming system for high-temperature melting slag | |
| CN112725554A (en) | High-temperature liquid dilute slag air quenching granulation and waste heat recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi Dongfang Industrial Environmental Protection Co., Ltd. Assignor: Wuxi Dongfang Environmental Engineering Design & Research Institute Co., Ltd. Contract record no.: 2012320000336 Denomination of utility model: Reclaiming system for high-temperature melting slag Granted publication date: 20110406 License type: Exclusive License Record date: 20120329 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |