CN209685844U - Add the device of fine iron breeze direct steelmaking using electric furnace high-temperature flue gas - Google Patents
Add the device of fine iron breeze direct steelmaking using electric furnace high-temperature flue gas Download PDFInfo
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- CN209685844U CN209685844U CN201920338702.9U CN201920338702U CN209685844U CN 209685844 U CN209685844 U CN 209685844U CN 201920338702 U CN201920338702 U CN 201920338702U CN 209685844 U CN209685844 U CN 209685844U
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- electric furnace
- flue gas
- pressure ball
- concentrate pressure
- charging reaction
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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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Abstract
The utility model discloses a kind of devices for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, including electric furnace and with the charging reaction tunnel of electric furnace airtight connection, it further include steel scrap charging (feeding) equipment and concentrate pressure ball distribution device, steel scrap charging (feeding) equipment and concentrate pressure ball distribution device are used for steel scrap and concentrate pressure ball cloth to charging reaction tunnel, and charging reaction tunnel is used to export flue gas from electric furnace and convey steel scrap and concentrate pressure ball to electric furnace.Concentrate pressure ball and steel scrap are sent into electric furnace by charging reaction tunnel, and flue gas is exported from electric furnace；When in use, concentrate pressure ball containing fine iron breeze and carbon is inversely delivered to electric furnace relative to flue gas in charging reaction tunnel, electric furnace flue gas heats concentrate pressure ball, so that concentrate pressure ball restores part ferro element, and enters electric furnace molten bath via charging reaction tunnel.Using the waste heat of electric furnace high-temperature flue gas, realizes part fine iron breeze direct steelmaking, reduce blast furnace link, emission reduction simultaneously reduces steelmaking feed cost price.
Description
Technical field
The utility model belongs to metallurgical technology field, in particular to a kind of to add fine iron breeze direct using electric furnace high-temperature flue gas
The device of steel-making.
Background technique
Electric arc furnaces mini-mill steelmaking is a kind of using steel scrap as the steel-smelting technology of main material, have energy consumption is lower, CO2 discharge compared with
It the advantages that few, is occupied an important position in STEELMAKING PRODUCTION.But for a long time, scrap resources occupy high price cause electric furnace steel making at
This process longer than blast furnace-converter is high, and market competition is not strong；Since scrap resources harmful element content controls difficulty, steel is influenced
Ingredient quality；Scrap resources are in short supply, and electric arc furnaces short route is high to the dependency degree of steel scrap.
Utility model content
In view of the foregoing deficiencies of prior art, electric furnace high-temperature cigarette is utilized the purpose of this utility model is to provide a kind of
Gas adds the device of fine iron breeze direct steelmaking, is easy to implement addition fine iron breeze direct steelmaking in conjunction with steel scrap, life is effectively reduced
Produce cost.
In order to achieve the above objects and other related objects, technical solutions of the utility model are as follows:
A kind of device adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, including electric furnace and with the closed company of electric furnace
The charging reaction tunnel connect, further includes steel scrap charging (feeding) equipment and concentrate pressure ball distribution device, the steel scrap charging (feeding) equipment and concentrate
Pressure ball distribution device for steel scrap and concentrate pressure ball cloth to charging reaction tunnel, the charging reaction tunnel be used for by flue gas from
Electric furnace export simultaneously conveys steel scrap and concentrate pressure ball to electric furnace.
Using the above structure, concentrate pressure ball and steel scrap are sent by electric furnace by charging reaction tunnel, and by flue gas from electric furnace
Export；When in use, the concentrate pressure ball containing fine iron breeze and carbon is inversely defeated relative to flue gas in charging reaction tunnel
It send to electric furnace, electric furnace flue gas heats concentrate pressure ball, so that concentrate pressure ball restores part ferro element, and via charging reaction tunnel
Into electric furnace molten bath.Using the waste heat of electric furnace high-temperature flue gas, realize that part fine iron breeze direct steelmaking, the part fine iron breeze subtract
Blast furnace link is lacked, emission reduction simultaneously reduces steelmaking feed cost price, improves the short route market competitiveness.
Optionally, there is dynamic airtight device in charging reaction tunnel tail portion, there is open steel scrap after dynamic airtight device
Feeding section, the steel scrap charging (feeding) equipment are correspondingly arranged with the steel scrap feeding section.
Optionally, the front of the steel scrap feeding section is equipped with before concentrate pressure ball distribution device and/or dynamic airtight device
Charging reaction tunnel on be provided with concentrate pressure ball distribution device.
Optionally, dust removal port is provided on the charging reaction tunnel, the dust removal port passes through flue gas inlet pipe and concentrate pressure
The connection of ball distribution device preheats concentrate pressure ball for electric furnace flue gas to be imported the concentrate pressure ball distribution device, the concentrate
Pressure ball distribution device is connect by discharge nozzle with charging reaction tunnel, for sending the concentrate pressure ball after preheating to charging reaction tunnel
Road.
Optionally, the discharge nozzle is connected to the tail portion or posterior segment in charging reaction tunnel.
Optionally, the concentrate pressure ball distribution device is provided with preheating chamber, the high-order material of adapter tube connection at the top of the preheating chamber
Storehouse, preheating chamber bottom are connected with vibration material feeding, and the flue gas inlet pipe is connected to preheating chamber, and the preheating chamber is connected with flue gas
Outlet pipe.
Optionally, the preheating chamber is V-shaped, U-shaped, Y type or L-type container or the preheating chamber and vibration material feeding
Constitute V-type, U-shaped, Y type or L-type container.
Optionally, the preheating chamber flue gas outlet pipe is connected with mixed wind regulating device.
Optionally, the preheating chamber outlet is provided with blowing baffle.
Optionally, the charging reaction tunnel is horizontally or diagonally arranged, and is provided at least one on the charging reaction tunnel
Dust removal port, when being provided with more than two dust removal ports on the charging reaction tunnel, independent or linkage cigarette is arranged in each dust removal port
Gas control device.
Optionally, charging reaction tunnel slot bottom is arranged to reduce along feed direction ladder-like.
Optionally, at least one flue gas inspection device is provided in the charging reaction tunnel.
Optionally, the burner or nozzle for heating into tunnel are provided on the charging reaction tunnel.
Optionally, the discharging point region in electric furnace corresponding to charging reaction tunnel is provided with oxygen rifle.
The beneficial effects of the utility model are: concentrate pressure ball and steel scrap are sent by the utility model by charging reaction tunnel
Electric furnace, and flue gas is exported from electric furnace；When in use, by the concentrate pressure ball containing fine iron breeze and carbon in charging reaction tunnel
It is inversely delivered to electric furnace relative to flue gas, electric furnace flue gas heats concentrate pressure ball, so that concentrate pressure ball restores part ferro element,
And enter electric furnace molten bath via charging reaction tunnel.Using the waste heat of electric furnace high-temperature flue gas, realize that part fine iron breeze directly refines
Steel, the part fine iron breeze reduce blast furnace link, and emission reduction simultaneously reduces steelmaking feed cost price, improve short route market competition
Power.
Detailed description of the invention
Fig. 1 is that the utility model is a kind of adds the schematic device of fine iron breeze direct steelmaking (to close using electric furnace high-temperature flue gas
The double dust collection mouth of joint control)；
Fig. 2, which is that the utility model is a kind of, adds the schematic device of fine iron breeze direct steelmaking (solely using electric furnace high-temperature flue gas
The double dust collection mouth of vertical control)；
Fig. 3 is that the utility model is a kind of adds the schematic device of fine iron breeze direct steelmaking (single using electric furnace high-temperature flue gas
Dust removal port)；
Fig. 4, which is that the utility model is a kind of, adds the schematic device of fine iron breeze direct steelmaking (solely using electric furnace high-temperature flue gas
The double dust collection mouth of vertical control, two or in which one of dust removal port flue gas be directed to concentrate pressure ball distribution device)；
Fig. 5 is the schematic diagram of concentrate pressure ball distribution device in Fig. 4；
Fig. 6 is the schematic diagram of concentrate pressure ball distribution device another embodiment.
Piece mark explanation
1- electric furnace；The tunnel 2- leading portion；3- strengthens bringing-up section；4- burner or nozzle；5- concentrate pressure ball distribution device；50- high
Position feed bin；51- preheating chamber；52- flue gas outlet pipe；53- baffle；54- discharge nozzle；55- vibration material feeding；56- mixes wind and adjusts dress
It sets；57- flue gas inlet pipe；6- dynamic airtight device；7- steel scrap feeding section；8- steel scrap；9- concentrate pressure ball；The second dust removal port of 10-；
The first dust removal port of 11-；12- oxygen rifle；13- flue gas conditioning device；14- steel scrap charging (feeding) equipment；15- electric furnace flue gas；16- combustion gas；17-
Flue gas inspection device.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that the term of such as "upper", "lower", "left", "right", " centre " and " one " cited in this specification, also
Only being illustrated convenient for narration, rather than to limit the enforceable range of the utility model, relativeness is altered or modified,
Under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
Front and back position described in this example is close to one end of electric furnace 1 with charging reaction tunnel in preceding, charging reaction tunnel
One end close to steel scrap feeding section 7 is rear.
It is shown in Figure 1, the utility model for a kind of device for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas,
Including steel-smelting electric furnace, charging reaction tunnel, steel scrap charging (feeding) equipment and concentrate pressure ball distribution device 5, charging reaction tunnel front with
Electric furnace airtight connection, tail portion are used for 8 feeding of steel scrap；The steel scrap charging (feeding) equipment is connect with charging reaction tunnel, is used for steel scrap
Cloth to charging reaction tunnel, concentrate pressure ball distribution device 5 is connect with charging reaction tunnel, is used for 9 cloth of concentrate pressure ball extremely
Charging reaction tunnel, the charging reaction tunnel are used to convey steel scrap and concentrate pressure ball 9 to electric furnace.
The device during steel scrap 8 and concentrate pressure ball 9 are conveyed to electric furnace, electric furnace high-temperature flue gas respectively with steel scrap 8
With the reverse relative motion of concentrate pressure ball 9, the heating to steel scrap and concentrate pressure ball is realized, so that concentrate pressure ball generates chemical reaction,
Restore ferro element.
When concrete application, steel-making electric melting furnace is stayed into 30% or more steel (i.e. 30% or more molten steel ratio), charging reaction tunnel
Road and 1 airtight connection of electric furnace, flue gas is exported from electric furnace 1；By the concentrate pressure ball 9 containing fine iron breeze and carbon in charging reaction
It is conveyed in tunnel to electric furnace 1, conveying direction and 1 flue gas of electric furnace are reverse, pass through 1 flue gas concentrate pressure ball of electric furnace, the 9 (electricity of high temperature
15 temperature of kiln gas is generally 1100~1600 DEG C), electric furnace flue gas 15 heats concentrate pressure ball 9 and brings it about chemical reaction, so that
Concentrate pressure ball 9 restores part ferro element, and enters electric furnace molten bath via charging reaction tunnel, is smelted.
Specifically, it is mixed with the combination volume morphing of reduced iron, remaining miberal powder, residual carbon with steel scrap 8 after concentrate pressure ball 9 reacts
Enter electric furnace afterwards.While concentrate pressure ball 9 reacts, steel scrap 8 can also be heated by electric furnace flue gas 15, reduce steel-making power consumption.
Wherein, the concentrate pressure ball 9 forms (adhesive can be added) by fine iron breeze and carbon mixing compacting, is in granular form；
The content that the ratio of fine iron breeze and carbon can match into carbon in concentrate pressure ball 9 can guarantee that iron is completely reduced out, even
There are surpluses to provide the part chemical heat source of electric furnace for carbon.Wherein, fine iron breeze can use to iron ore, and coal can be selected in carbon, former
Reason is that C reacts generating portion reduced iron with fine iron breeze under high temperature.
In one embodiment, there is a dynamic airtight device 6 in charging reaction tunnel tail portion, after dynamic airtight device 6
There are open steel scrap feeding section 7, the steel scrap charging (feeding) equipment (such as magnetic disc suspending, chain scraper conveyor) and the steel scrap feeding section 7
It is correspondingly connected with, is laid with steel scrap in open steel scrap feeding section 7 steel scrap charging (feeding) equipment, then use concentrate pressure ball cloth on steel scrap layer
Device 5, which is spread, dissipates concentrate pressure ball, and iron element reduction reaction, the iron element of generation occur for hot environment of the concentrate pressure ball in charging reaction tunnel
Enter electric furnace together with steel scrap layer and carry out melting, completes steel making operation.Steel scrap is also preheated in the process, can reduce electricity
Consumption.
In one embodiment, oxygen rifle is arranged in the drop point in electric furnace corresponding to charging reaction tunnel, to electric furnace molten bath
The reaction between carbon and oxygen in molten bath is reinforced in discharging point oxygen blast, improves the molten bath cold-zone of discharging point, accelerates melt tank reaction speed.Due to falling
It is carbon containing in restite after shots have concentrate pressure ball to react, oxygen blast condition is provided to oxygen rifle.
In one embodiment, the burner or nozzle for heating into tunnel are provided on the charging reaction tunnel
4,16 combustion heating of combustion gas sprayed by burner or nozzle 4, burner combustion gas 16 and 15 combined heat concentrate pressure ball of electric furnace flue gas,
It is heated by active and increases flue-gas temperature, the temperature for maintaining reaction to need and the heat exchange for stirring flue gas Yu concentrate pressure ball 9 improve
9 reaction efficiency of concentrate pressure ball.Burner or nozzle 4 are blown from the front to the back diagonally downward.The effect of burner or nozzle 4 is: due to
Charging reaction tunnel is longer (tunnel device, which can take away heat, material, can also take away heat), and 15 temperature of electric furnace flue gas is in tunnel
It is gradually reduced from front to back, to maintain higher reaction temperature, it is necessary to be able to maintain the temperature environment in reaction tunnel with chemistry；It burns
Mouth uses high-speed jet, provides the direct impact to reaction tunnel bottom material, can penetrate surface layer by the gap of material,
Deeper heat penetration is provided, to improve the reaction efficiency in tunnel.
Wherein, it can not be set on the leading portion charging reaction tunnel (i.e. tunnel leading portion 2) close to electric furnace since temperature is higher
Set burner or nozzle 4；It is heated in the middle section in charging reaction tunnel or posterior segment setting burner or nozzle 4, forms reinforcing and add
Hot arc 3.
In one embodiment, the charging reaction tunnel is horizontally or diagonally arranged, and is arranged on charging reaction tunnel
There is at least one dust removal port, is exported exhaust gas by dust removal port；That is, at least being set on the charging reaction tunnel that flue gas and material are returned
One dust removal port；It such as exports to dust pelletizing system or cooling system and carries out subsequent processing.It is arranged when on the charging reaction tunnel
There are two when the above dust removal port, independent or linkage flue gas conditioning device is arranged in each dust removal port.
The first dust removal port 11 and the second dust removal port 10 is respectively set in tunnel leading portion 2 and reinforcing 3 rear of bringing-up section in Fig. 1；The
Concentrate pressure ball distribution device 5, if necessary, the front of steel scrap feeding section 7 are equipped between two dust removal ports 10 and dynamic airtight device 6
Concentrate pressure ball distribution device 5 can also be equipped with.Concentrate pressure ball distribution device 5 can be with or without pre- heat function.
Tunnel leading portion 2 and reinforcing 3 rear of bringing-up section respectively set the first dust removal port 11 and the second dust removal port 10；And it is adjusted with flue gas
Device carries out linkage adjusting, and this mode advantageously reduces the flow velocity and resistance of flue gas, reduces the granularity requirement of concentrate pressure ball,
Electric furnace flue gas 15 and combustion gas 16 are improved to the heating efficiency of concentrate pressure ball, improves reaction speed；The flow velocity of electric furnace flue gas 15 is reduced,
The probability that concentrate pressure ball is swept away by flue gas can also be reduced, the recovery rate of concentrate pressure ball is improved and improves the leakage of dynamic airtight device 6
Wind improves the thermal efficiency of system；In addition, flue gas conditioning device is also used for the control of flue-gas temperature, so as to subsequent flue gas chilling
Inhibit the synthesis of the nuisances such as dioxin from source.Existing triple valve or other valves resistant to high temperature can be used in flue gas conditioning device
Door.
Fig. 2 is the case study on implementation of two dust removal port independent controls of the utility model, and reinforcing bringing-up section 3 can use when too long
Which is individually set up valve control to the exhaust gas volumn of the first dust removal port 11 and the second dust removal port 10 in the program and (is not shown in figure
Out).
Fig. 3 is the case study on implementation of the single dust removal port of the utility model.
In one embodiment, it is defeated that oscillatory type can be used in steel scrap and concentrate pressure ball, typical such as horizontal anharmonic vibrational
Conveying or skewed slot vibrating transportation.
In one embodiment, charging reaction tunnel slot bottom is arranged to along feed direction (from back to front) reduction
Ladder-like, concentrate pressure ball 9 is rolled when conveying in charging reaction tunnel by step disturbance, improves 9 heating uniformity of concentrate pressure ball.
Since concentrate pressure ball 9 is flowed through in tunnel bottom, high-temperature flue gas and burner combustion gas 16 in tunnel upper space, traditional stable vibration is defeated
The tunnel sent, material operational process is relatively stable, and 9 bed of material of concentrate pressure ball only has surface to be heated, and step disturbance passes through material
When crossing ladder, the material on bed of material bottom and surface layer is flipped after conveying certain distance in tunnel, so that material is by cigarette
16 homogeneous heating of gas and combustion gas increases heat exchange area, improves reaction efficiency.
In one embodiment, at least one flue gas inspection device 17 is provided in the charging reaction tunnel.This example
In, many places flue gas inspection device 17 is installed in charging reaction tunnel additional to detect ingredient (such as flue gas inspection instrument, the flue gas analysis of flue gas
The existing equipments such as instrument), charging rate is controlled, the flue gas in guarantee charging reaction tunnel as far as possible keeps reducing atmosphere or hypoxemia to contain
Amount, to keep the reliability of concentrate pressure ball reduction reaction.
In one embodiment, it is provided at least one dust removal port on the charging reaction tunnel, dust removal port passes through cigarette
Gas inlet pipe 57 is connected to concentrate pressure ball distribution device 5, right in the concentrate pressure ball distribution device 5 for importing electric furnace flue gas 15
The preheating of concentrate pressure ball, concentrate pressure ball distribution device 5 is connect by discharge nozzle 4 with charging reaction tunnel, for the essence after preheating
Mine pressure ball is sent to charging reaction tunnel, and concentrate pressure ball is oriented to electric furnace by charging reaction tunnel.It (can also be more by any one dust removal port
It is a simultaneously) flue gas be oriented to concentrate pressure ball sealed feeding device, plume penetration is stored in the concentrate pressure of concentrate pressure ball distribution device 5
Ball is preheated.Cloth again after being preheated by electric furnace flue gas 15, when improving the preheating temperature and stop of concentrate pressure ball 9
Between, so that the reduction degree of the ferro element in concentrate pressure ball greatly improves.
Wherein, the concentrate pressure ball 9 after preheating can be arranged in the arbitrary point in charging reaction tunnel, ordinary circumstance through discharge nozzle 4
Under, closer to charging reaction Tunnel Endpoint, concentrate pressure ball obtains better pre-heat effect and residence time.
Referring specifically to shown in Fig. 4, for two dust removal ports, the concentrate pressure ball distribution device 5 is provided with preheating chamber 51, in advance
Hot cell 51 is connect by flue gas inlet pipe 57 with the first dust removal port 11, and adapter tube connection one is used to store to multiple at the top of preheating chamber 51
The high hopper 50 of concentrate pressure ball, 51 bottom of preheating chamber are connected with vibration material feeding 55 (skewed slot vibration charging or horizontal anharmonic
Vibrational charging), 51 discharge port of preheating chamber is connected to any position in charging reaction tunnel by discharge nozzle 4, can connect
To the leading portion in charging reaction tunnel, middle section, back segment or end etc., in order to obtain better pre-heat effect and residence time, can connect
It is connected to back segment or end；The preheating chamber 51 is also connected with flue gas outlet pipe 52, for flue gas to be discharged.Pass through vibration material feeding 55 1
Aspect carries out cloth, on the other hand increases the contact of flue gas and concentrate pressure ball, improves heat transfer effect and reaction efficiency.
In one embodiment, flue gas outlet pipe 52 is connected with mixed wind regulating device 56.Mixed wind tune is filled in flue gas outlet pipe 52
Regulating device 56, it is contemplated that the reduction reaction that concentrate pressure ball preheating chamber 51 may occur generates CO, and the burning of the gas can be used to
Adjust the flue-gas temperature (promoting temperature to administer favorably dioxin) that scrap steel preheating excludes.Wherein, mixing wind regulating device 56 can be
Equipment commonly used in the art can adopt plate-turning door or blowing line etc..
Fig. 5 show the structural schematic diagram of the concentrate pressure ball distribution device 5 with pre- heat function, the connection of 51 bottom of preheating chamber
Vibration material feeding 55, top adapter tube connection high hopper 50, constitute the confined space of storage concentrate pressure ball.Wherein, preheating chamber
51 V-shaped, U-shaped, Y types or L-type container or 51 bottom opening of the preheating chamber are connect with vibration material feeding 55, an isomorphism
At V-type, U-shaped, Y type or L-type container.Such setting forms generally u-shaped bending flue gas after may make flue gas to enter preheating chamber 51
Route, reducing smoke flow velocity extend the time of contact of concentrate pressure ball.
Flue gas or combustion gas 16 are penetrating the concentrate pressure ball gap in V-type, U-shaped or Y type or L-type container, the design of preheating chamber 51
At V, type is U-shaped or Y type or L-type container are primarily to improve the contact area that flue gas move towards raising high-temperature gas and concentrate pressure ball
(penetration) also can be made inclination or horizontal duct structure in other embodiments.
In order to preferably accurately control closed blanking, blowing baffle 3 can also be set in the discharging section of vibration material feeding 55,
Vibration material feeding 55 is connected on charging reaction tunnel by discharge nozzle 54.
Fig. 6 show the structural schematic diagram of L-type preheating chamber 51, can cancel blowing baffle 3 to simplify structure.
Wherein, since discharge nozzle 54 is connected on charging reaction tunnel, discharge nozzle 54 can import a small amount of flue gas and enter preheating
Room 51, the preheating to concentrate pressure ball are beneficial.
The utility model has beneficial effect to be:
The utility model utilizes the waste heat of electric furnace high-temperature flue gas, realizes part fine iron breeze direct steelmaking, the part iron essence
Miberal powder reduces blast furnace link, and emission reduction simultaneously reduces steelmaking feed cost price, improves the short route market competitiveness.Fine iron breeze
The harmful element diluted in steel scrap, the advantageous ingredient quality for improving molten steel is added.Reduce the demand and dependence of steel scrap.
When carrying out preheating temperature control, preheating to concentrate pressure ball using the concentrate pressure ball distribution device 5 with preheating chamber 51
Between control, charging rate control the preheating temperature that concentrate pressure ball can be greatly improved and residence time so that concentrate pressure
Ball is greatly improved in the reduction degree of the ferro element of the present apparatus.
Since the cost of electric furnace steel making main material steel scrap accounts for the 70~75% of electric furnace steel making cost, and use fine iron breeze and
The mixture of coal price from cost only have steel scrap~1/2 (be converted to iron element), if it is possible to realize 5~15% iron usually
Derived from iron ore concentrate, cost of material 3~10% is reduced, will bring the ton steel income of additional 100~300 yuan (close to electric furnace steel making
The phase market price) so that there is the extremely strong market competitiveness on electric furnace steel making using the technology.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (14)
1. a kind of device for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that: including electric furnace and with
The charging reaction tunnel of electric furnace airtight connection further includes steel scrap charging (feeding) equipment and concentrate pressure ball distribution device, the steel scrap charging
Equipment and concentrate pressure ball distribution device are used for steel scrap and concentrate pressure ball cloth to charging reaction tunnel, the charging reaction tunnel
For flue gas to be exported from electric furnace and conveys steel scrap and concentrate pressure ball to electric furnace.
2. the device according to claim 1 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
There is dynamic airtight device in charging reaction tunnel tail portion, there is open steel scrap feeding section, the steel scrap after dynamic airtight device
Charging (feeding) equipment is correspondingly arranged with the steel scrap feeding section.
3. the device according to claim 2 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
The front of the steel scrap feeding section is equipped on the charging reaction tunnel before concentrate pressure ball distribution device and/or dynamic airtight device
It is provided with concentrate pressure ball distribution device.
4. the device according to claim 3 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
Dust removal port is provided on the charging reaction tunnel, the dust removal port is connected to by flue gas inlet pipe with concentrate pressure ball distribution device,
Concentrate pressure ball is preheated for electric furnace flue gas to be imported the concentrate pressure ball distribution device, the concentrate pressure ball distribution device passes through
Discharge nozzle is connect with charging reaction tunnel, for sending the concentrate pressure ball after preheating to charging reaction tunnel.
5. the device according to claim 4 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
The discharge nozzle is connected to the tail portion or posterior segment in charging reaction tunnel.
6. the device according to claim 4 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
The concentrate pressure ball distribution device is provided with preheating chamber, and adapter tube connection high hopper, preheating chamber bottom connect at the top of the preheating chamber
It is connected to vibration material feeding, the flue gas inlet pipe is connected to preheating chamber, and the preheating chamber is connected with flue gas outlet pipe.
7. the device according to claim 6 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
The preheating chamber is V-shaped, U-shaped, Y type or L-type container or the preheating chamber and vibration material feeding constitute V-type, U-shaped, Y type
Or L-type container.
8. the device according to claim 6 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
The preheating chamber flue gas outlet pipe is connected with mixed wind regulating device.
9. the device according to claim 6 for adding fine iron breeze direct steelmaking using electric furnace high-temperature flue gas, it is characterised in that:
The preheating chamber outlet or vibration material feeding outlet are provided with blowing baffle.
10. add the device of fine iron breeze direct steelmaking described in -9 any one using electric furnace high-temperature flue gas according to claim 1,
It is characterized by: the charging reaction tunnel is horizontally or diagonally arranged, at least one dedusting is provided on the charging reaction tunnel
Mouthful, when being provided with more than two dust removal ports on the charging reaction tunnel, independent or linkage flue gas tune is arranged in each dust removal port
Regulating device.
11. add the device of fine iron breeze direct steelmaking described in -9 any one using electric furnace high-temperature flue gas according to claim 1,
It is characterized by: charging reaction tunnel slot bottom is arranged to along the ladder-like of feed direction reduction.
12. add the device of fine iron breeze direct steelmaking described in -9 any one using electric furnace high-temperature flue gas according to claim 1,
It is characterized by: being provided at least one flue gas inspection device in the charging reaction tunnel.
13. add the device of fine iron breeze direct steelmaking described in -9 any one using electric furnace high-temperature flue gas according to claim 1,
It is characterized by: being provided with the burner or nozzle for heating into tunnel on the charging reaction tunnel.
14. add the device of fine iron breeze direct steelmaking described in -9 any one using electric furnace high-temperature flue gas according to claim 1,
It is characterized by: the discharging point region in electric furnace corresponding to charging reaction tunnel is provided with oxygen rifle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920338702.9U CN209685844U (en) | 2019-03-11 | 2019-03-11 | Add the device of fine iron breeze direct steelmaking using electric furnace high-temperature flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920338702.9U CN209685844U (en) | 2019-03-11 | 2019-03-11 | Add the device of fine iron breeze direct steelmaking using electric furnace high-temperature flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN209685844U true CN209685844U (en) | 2019-11-26 |
Family
ID=68605174
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920338702.9U Withdrawn - After Issue CN209685844U (en) | 2019-03-11 | 2019-03-11 | Add the device of fine iron breeze direct steelmaking using electric furnace high-temperature flue gas |
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| CN (1) | CN209685844U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777913A (en) * | 2019-03-11 | 2019-05-21 | 中冶赛迪工程技术股份有限公司 | Add the method and device of fine iron breeze direct steelmaking using electric furnace high-temperature flue gas |
| CN115595399A (en) * | 2022-09-07 | 2023-01-13 | 中冶长天国际工程有限责任公司（Cn） | Process and system for hot charging of scrap steel in cooperation with direct reduced iron |
-
2019
- 2019-03-11 CN CN201920338702.9U patent/CN209685844U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777913A (en) * | 2019-03-11 | 2019-05-21 | 中冶赛迪工程技术股份有限公司 | Add the method and device of fine iron breeze direct steelmaking using electric furnace high-temperature flue gas |
| CN109777913B (en) * | 2019-03-11 | 2023-10-17 | 中冶赛迪工程技术股份有限公司 | Method and device for directly steelmaking by adding iron concentrate powder into high-temperature flue gas of electric furnace |
| CN115595399A (en) * | 2022-09-07 | 2023-01-13 | 中冶长天国际工程有限责任公司（Cn） | Process and system for hot charging of scrap steel in cooperation with direct reduced iron |
| CN115595399B (en) * | 2022-09-07 | 2023-11-14 | 中冶长天国际工程有限责任公司 | Process and system for hot charging of scrap steel by cooperation of preheating and direct reduction of iron |
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