CN201785404U - Recovering system for high-temperate molten slag - Google Patents
Recovering system for high-temperate molten slag Download PDFInfo
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- CN201785404U CN201785404U CN2010202555721U CN201020255572U CN201785404U CN 201785404 U CN201785404 U CN 201785404U CN 2010202555721 U CN2010202555721 U CN 2010202555721U CN 201020255572 U CN201020255572 U CN 201020255572U CN 201785404 U CN201785404 U CN 201785404U
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- steam
- slag
- molten slag
- temperature molten
- recovery system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
A recovering system for high-temperature molten slag includes a treatment tower, a dedusting device and a gas and water mixer. A slag inlet, a slag outlet, a steam inlet and a steam outlet are formed on the treatment tower; a nozzle is arranged at the slag inlet; the dedusting device in connected with the steam outlet and the gas and water mixer; and the gas and water mixer is connected with the nozzle and the steam inlet. In the utility model, high-pressure steam ejected from the nozzle impacts high-temperature liquid molten slag, the molten slag is broken and cooled to tinier solid particles, the oxidation rate of steel scrap is reduced and a good basis is built for the steel scrap to be recovered as much as possible at a later stage; steam entering into the treatment tower from the steam inlet carries out heat exchange with slag particles broken by steam, heat subject to heat exchanging is further utilized to generate steam, the steam is cyclically utilized for steam breaking and heat exchanging, and the cyclic utilization for sensible heat of high-temperature molten slag is achieved; and steam is utilized as a heat-exchange medium, the direct heat exchange is carried out between gas and water, the efficiency of the recovering system is high, and the recovering system is safe and reliable.
Description
Technical field
The utility model relates to high-temperature molten slag recovery technology field, relate in particular to a kind of 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, be particularly useful for reclaiming the recycling of converter slag as steel industry, electric furnace slag, blast furnace slag etc.
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; at last carry out the recovery for the third time of heat in fluidized-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 molten slag recovery system 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, cleaning apparatus and steam heater, treating column is provided with slag inlet, slag notch, steam-in and vapour outlet, the slag inlet place is provided with nozzle, cleaning apparatus connects vapour outlet and steam heater, and steam heater connects nozzle and steam-in.
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 steam for the treatment of column and the vapour solid impurity particle after broken from the steam-in and carry out heat exchange, the heat that is exchanged further utilizes again to produce steam, steam internal recycle again is used for the broken and heat exchange of vapour, realized the recycle of high-temperature molten slag sensible heat, and adopt the medium of steam as heat exchange, the carbonated drink direct heat exchange, efficient province with high investment is safe and reliable.
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 can be stablized the composition of 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, 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, and 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 reclaim high-temperature molten slag up hill and dale comprehensively and contained.
Description of drawings
Fig. 1 is the structural representation of the utility model high-temperature molten slag recovery 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, cyclonic separator 9 and steam heater 12, treating column 4 is provided with slag inlet 41, slag notch 42, steam-in 43 and vapour outlet 44, slag inlet 41 places are provided with nozzle 3 and chute 2, cyclonic separator 9 is by pipe connection vapour outlet 44 and steam heater 12, carbonated drink is mixed 12 devices and is connected steam accumulator 13, steam accumulator 13 is by pipe connection nozzle 3 and steam-in 43, is respectively nozzle 3 and steam-in 43 provides high pressure steam and 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.
Another strand steam 43 enters treating column 4 from the steam-in, carries out heat exchange with the solid impurity particle that is transferring out treating column 4 on the sieve plate 6, and steam becomes superheated vapour after the heat exchange.Steam-in 43 makes the heat exchange of steam and solid impurity particle more abundant below sieve plate 6.Since adopt the medium of steam as heat exchange, the carbonated drink direct heat exchange, efficient province with high investment is safe and reliable.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 ℃.
The top for the treatment of column 4 is provided with baffle plate 8 near vapour outlet 44 positions, and baffle plate 8 can be more than one or one.Superheated vapour after the heat exchange is earlier through discharging treating column 4 again behind baffle plate 8 rough dustings.Cyclonic separator 9 is by pipe connection vapour outlet 44 and steam heater 12, the superheated vapour that comes out from vapour outlet 44 enters steam heater 12 after further removing dust through cyclonic separator 9 again, carry out steam-water heat exchanging and generate steam in steam heater 12, steam heater 12 can produce the saturation steam that pressure is 0.4Mpa-1.2Mpa.Steam accumulator 13 is by pipe connection steam heater 12, nozzle 3 and steam-in 43, and the steam that steam heater 12 generates enters steam accumulator 13 continuously and carries out accumulation.Distribute most steam cycle to treating column 4 from steam accumulator 13 and participate in the steam of next process and the heat exchange of high-temperature molten slag, here be divided into two strands of steam again: a small gangs of high pressure steam is led to nozzle 3, it is broken to be used for that high-temperature molten slag is carried out vapour, one big strand 43 enters treating column 4 from the steam-in, the solid impurity particle that is used for vapour after broken carries out heat exchange, and become steam more than needed from another small portion that steam accumulator 13 comes out, can be for external application.The blowdown of steam heater 12 is connected with shallow vexed pond 11 through wash water valve 174, so that recycle sewage resource (water, heat, grit etc.) wherein.The utility model adopts supplementary unit to provide feedwater for steam heater 12, this supplementary unit comprises softening water tank 16, service pump 15 and the deoxygenator 14 that connects successively, deoxygenator 14 connects steam heater 12, supplementary unit is used to steam heater 12 that high-quality feedwater is provided, to be used for production of steam.The utility model enters the steam for the treatment of column and the vapour solid impurity particle after broken and carries out heat exchange from the steam-in, the heat that is exchanged further utilizes again to produce steam, steam internal recycle again is used for the broken and heat exchange of vapour, realized the recycle of high-temperature molten slag sensible heat, and adopt the medium of steam as heat exchange, the carbonated drink direct heat exchange, efficient province with high investment is safe and reliable.
Sieve plate 6 vapour is broken and solid impurity particle that carry out after the heat exchange transfers out treating column 4, and belt 10 is transported to solid impurity particle in the shallow vexed pond 11 subsequently, in shallow vexed pond 11 solid impurity particle is carried out shallow vexed slag and handles.The structure in shallow vexed pond 11 and principle and traditional hot vexed slag bath are similar, comprise structures such as water spray, draining, steam discharge, caping equally, but pond quantity and volume size there are differences.Shallowly vexedly be meant that vexed slag time short, hour promptly slag tap vexed approximately slag half an hour to one.Shallow vexed slag is handled the composition that can stablize solid impurity particle, more be suitable for the building materials utilization, and further lay the foundation for the subsequent recovery scrap iron, and the slag treatment capacity in single pond is bigger in the unit time.Waste residue behind the vexed slag is dug out by excavator 18, carries out magnetic separation through magnetic separation belt 19 again, and to reclaim iron and steel scrap 20 wherein, remaining waste residue 21 can be done the building material outward transport.Except the magnetic separation belt, can also adopt and the iron and steel scrap in the waste residue can be selected other concentration equipments of selecting.
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) saturation steam parameter: process circulation usefulness, a part is outer to be supplied
Pressure 0.60Mpa
158.83 ℃ of temperature
(5) superheated vapour parameter in the treating column
Pressure 0.60Mpa
300.00 ℃ of temperature
(6) internal recycle saturation steam amount is 50.43 tons/hour
(7) vapour is broken with saturation steam amount 40m3/ ton slag or 1.81 tons/hour
(8) more than needed outer: 3.96 tons/hour for saturation steam (0.6Mpa)
(9) reclaim 10000 tons/year of steel scraps
(10) 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=2,770,000 yuan/year of 7000 hours * of 3.96 tons of/hour *
(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 this practicality 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, steam heater directly can be connected nozzle and steam-in, think that nozzle and steam-in provide high pressure steam and steam; 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 (8)
1. high-temperature molten slag recovery system, it is characterized in that, described system comprises treating column, cyclonic separator and steam heater, described treating column is provided with slag inlet, slag notch, steam-in and vapour outlet, described slag inlet place is provided with nozzle, described cyclonic separator connects described vapour outlet and steam heater, and described steam heater connects described nozzle and steam-in.
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 steam-in is below described sieve plate.
6. high-temperature molten slag recovery system according to claim 1 is characterized in that described system also comprises steam accumulator, and described steam accumulator is by the described steam heater of pipe connection, nozzle and steam-in.
7. high-temperature molten slag recovery system according to claim 1 is characterized in that described system also comprises supplementary unit, and described supplementary unit comprises softening water tank, service pump and the deoxygenator that connects successively, and described deoxygenator connects steam heater.
8. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202555721U CN201785404U (en) | 2010-07-08 | 2010-07-08 | Recovering system for high-temperate molten slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202555721U CN201785404U (en) | 2010-07-08 | 2010-07-08 | Recovering system for high-temperate molten slag |
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| Publication Number | Publication Date |
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| CN201785404U true CN201785404U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202555721U Expired - Lifetime CN201785404U (en) | 2010-07-08 | 2010-07-08 | Recovering system for high-temperate molten slag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345370A (en) * | 2016-08-31 | 2017-01-25 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Melt granulating device |
| KR102224147B1 (en) * | 2020-08-27 | 2021-03-09 | 주식회사 광메탈 | device for discharging water-granulated slag using a water wheel |
| CN113528720A (en) * | 2021-06-25 | 2021-10-22 | 武钢集团昆明钢铁股份有限公司 | Continuous pretreatment device and method for molten steel slag |
-
2010
- 2010-07-08 CN CN2010202555721U patent/CN201785404U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345370A (en) * | 2016-08-31 | 2017-01-25 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Melt granulating device |
| CN106345370B (en) * | 2016-08-31 | 2018-12-11 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | The granulating device of melt |
| KR102224147B1 (en) * | 2020-08-27 | 2021-03-09 | 주식회사 광메탈 | device for discharging water-granulated slag using a water wheel |
| CN113528720A (en) * | 2021-06-25 | 2021-10-22 | 武钢集团昆明钢铁股份有限公司 | Continuous pretreatment device and method for molten steel slag |
| CN113528720B (en) * | 2021-06-25 | 2022-11-29 | 武钢集团昆明钢铁股份有限公司 | Continuous pretreatment device and method for molten steel slag |
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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.: 2012320000335 Denomination of utility model: Recovering system for high-temperate molten slag Granted publication date: 20110406 License type: Exclusive License Record date: 20120329 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
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| CX01 | Expiry of patent term |