CN205741090U - A kind of direct reduced iron by rotary hearth furnace hot water quenching device - Google Patents
A kind of direct reduced iron by rotary hearth furnace hot water quenching device Download PDFInfo
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- CN205741090U CN205741090U CN201620591527.0U CN201620591527U CN205741090U CN 205741090 U CN205741090 U CN 205741090U CN 201620591527 U CN201620591527 U CN 201620591527U CN 205741090 U CN205741090 U CN 205741090U
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- hearth furnace
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Abstract
This utility model provides a kind of and rotary hearth furnace processes the hot water quenching device of DRI that iron content solid waste produces, and including rotary hearth furnace, horizontal tubular centrifuge dehumidifier, rushes hot DRI elephant trunk, hot-tub, hopper, is positioned at the first conveyer device of hopper outfan, is positioned at the storage bin below the first conveyer device outfan, collecting-tank etc.；Rush in the cylinder cavity that material is sent in horizontal tubular centrifuge dehumidifier by hot DRI elephant trunk；Hot DRI elephant trunk enters the porch of cylinder cavity and is provided with the high-pressure water heating nozzle connecting hot-tub, with the cooling to the DRI that rotary hearth furnace produces, makees the requirement of coolant finally meeting electric furnace steel making DRI.
Description
Technical field
This patent relates to the rotary hearth furnace of iron content fixed-end forces and produces DRI field, it is adaptable to rotary hearth furnace is reduced directly
The hot Water Quenching of ferrum.
Background technology
For a long time, the problem such as electric furnace steel making source of iron raw material constrains the development that China's electric steel produces.Domestic at present
Electric furnace steel making source of iron raw material is mainly derived from import steel scrap, pig, heating molten steel and DRI.Wherein, DRI
Irony is pure, and carbon content is low, can use continuous charging mode, it is possible to played electric furnace steel making ability to greatest extent, is high-quality
Electric furnace steel making optimal residual elements diluent and ferrous source material.
" carbon back rotary hearth furnace+mill ore magnetic selection " produces high Iron grade Direct Reducing Iron Process, can choosing low-grade for China, difficult
Smelting iron mine, and the present situation that iron and steel metallurgy enterprise a large amount of metallurgical dust solid waste is difficult by, and be main energy based on China with coal
The fundamental realities of the country of source consumption, with carbon-burdened pellet or agglomerate as raw material, under 1250～1350 DEG C of hot environments, through 20～
The reduction treatment of 40min, first obtain degree of metalization reach more than 60% DRI pelletizing (DRI), through supercooling, ore grinding,
After magnetic separation, the stone-like pulse and S mixed in coal ash and solid waste iron-bearing material introducing DRI can be eliminated, it is thus achieved that Iron grade reaches 90%
Above, iron recovery more than 80%, density ＞ 2t/m3High-grade direct-reduction iron block, can effectively meet electric furnace steel making direct
The use requirement of reduced iron." carbon back rotary hearth furnace+mill ore magnetic selection " production Direct Reducing Iron Process the most progressively pushes away at present
Extensively, and achieve certain effective economic well-being of workers and staff.
" carbon back rotary hearth furnace+mill ore magnetic selection " produces Direct Reducing Iron Process, and the temperature of charge discharged due to rotary hearth furnace reaches
1000 DEG C, it is necessary to after cooling down, transport could be implemented, carry out mill ore magnetic selection, to obtain the direct-reduction iron block of high Iron grade.
Implementing the cooling to the high-temperature material that rotary hearth furnace produces, present stage mainly takes two ways, and one is shrend side
Formula, one is air cooling mode.Water quenching method, heat transfer intensity is big, and efficiency is high, and equipment investment and construction cost are low, is to build at present
The mode that unit mainly uses；Air cooling mode, mainly uses steam and nitrogen to carry out heat exchange, and heat transfer intensity is relatively low, steam and nitrogen
Gas heat needs the cooling of heat exchange again to recycle, and dielectric dissipation is high, and equipment investment and construction cost are high, and payoff period is relatively
Long, and production stability is poor, technical elements need the most perfect.
The concrete technology introduction that the high-temperature direct reduced iron pelletizing that water quenching cooling is discharged is implemented on existing rank from rotary hearth furnace is less, often
Rule technology path is by rotary hearth furnace discharge machinery, by high-temperature material by elephant trunk, is discharged in the swimmer's pool of rotary hearth furnace side, and
Use dragveyer tool cooling to be expected, be transported in the bin of ground, in order to transport.
The problem existed has:
(1) being placed in swimmer's pool due to dragveyer tool afterbody, equipment soaks in the hot water, and ageing equipment is serious；
(2) the fine slag grain that shrend is damaged is difficult to be removed totally by dragveyer in time, easily accumulates at the bottom of pond；
(3) it is crowded with cooling material, the pushing to dragveyer tool afterbody base bottom swimmer's pool, easily causes equipment stuck, strengthen
Resistance in operation process, the fault rate that equipment runs is higher, and base overhauls difficulty in swimmer's pool, it is difficult to meet continuous metaplasia
Produce requirement.
It is therefore desirable to propose a kind of new technical scheme to solve problem above.
Utility model content
Provide a kind of hot Water Quenching technique that rotary hearth furnace is processed the DRI that iron content solid waste produces
And device, to realizing the cooling of DRI, it is simple to conveying, ore grinding, magnetic separation and briquetting, finally to meet electric furnace steel making use
DRI makees the requirement of coolant.
For reaching above-mentioned purpose, this utility model can adopt the following technical scheme that
A kind of direct reduced iron by rotary hearth furnace hot water quenching device, the precipitation connected with hot-tub including rotary hearth furnace, hot-tub
Pond, the horizontal tubular centrifuge dehumidifier being positioned on hot-tub, the cylinder cavity that extends into horizontal tubular centrifuge dehumidifier from rotary hearth furnace
In hot DRI elephant trunk, the hopper being similarly positioned in a cavity, be positioned at the first conveyer device below hopper outfan, be positioned at the
Storage bin below one conveyer device outfan, it is positioned at the second conveyer device below storage bin discharging opening, is positioned at the second conveying
Collecting-tank below device outfan；Hot DRI elephant trunk enters the porch in cylinder cavity and is provided with the high-pressure water heating connecting sedimentation tank
Nozzle；This high-pressure water heating nozzle also extends in described cylinder cavity.
Further, the lower part of described horizontal tubular centrifuge dehumidifier is positioned in the hot water in hot-tub；Laterally tubular
Centrifuge dehumidifier circumference is provided inwardly with grid filter screen；Described hopper outfan extends a cavity.
Further, the top of described hot-tub and horizontal tubular centrifuge dehumidifier is covered with vapour hood；On this vapour hood
Side is provided with steam smoke exhaust barrel, and steam smoke exhaust barrel connects with vapour hood；Described vapour hood is additionally provided with the cooling on vapour hood top
Sprinkler head.
Further, being provided with the first backwater canal below described first conveyer device, the backwater end of the first backwater canal is positioned at heat
On pond；It is provided with the second backwater canal below described second conveyer device, at the backwater end of the second backwater canal, is additionally provided with recovery second
The collecting-tank of recirculation water in backwater canal.
Further, it is additionally provided with the reversible tape machine being positioned at below the second conveyer device, below the two ends of reversible tape machine
It is equipped with storage bin entrance.
Further, high-pressure water heating nozzle is connected by heat-exchanger pump with sedimentation tank；Sedimentation tank is arranged over the mouth of pipe of fetching water, pipe
Termination is provided with drainage screen, intake pipe and heat-exchanger pump inlet communication；Described collecting-tank is same and heat-exchanger pump inlet communication.
Further, it is provided with grid filter plate bottom hopper lower output side.
Beneficial effect: compared with prior art, the beneficial effects of the utility model include:
(1) the 1000 DEG C of DRI pelletizings discharged from rotary hearth furnace based on water quenching method cooling, are reduced directly after cooling
Iron ball group controls temperature, moisture content～15%；System circulating hot water temperature is 60～80 DEG C；
(2) material absorption water, and water circulation rate～95% are removed；Tilt conveyor belt frame on backwater canal, and
Channel low spot arranges pushing off the slag filter plate, reclaims the table water separated out from zone face further, reduces the loss of system water；
(3) high-temperature material completes part cooling in dehydrator, and is implemented transhipment by dehydrator；Dehydrator is axially by grid
Filter screen is made, and is made up of grid filter plate, it is simple to the backflow of material table water bottom the oblique elephant trunk of hopper；
(4) dehydrator surrounding is that grid filter screen is made, and enables a system to the direct-reduction after receiving to greatest extent to cool down
Iron ball group, it is to avoid prior art shrend fine slag grain is deposited in hot-tub, the problem that slag particle is reclaimed more difficulty；
(5) compared with prior art, drive system facility is placed on hot-tub, and maintenance is changed convenient, and operating rate is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model direct reduced iron by rotary hearth furnace hot water quenching device.
Detailed description of the invention
Further describe the technical solution of the utility model below in conjunction with the accompanying drawings.
As it is shown in figure 1, the open a kind of direct reduced iron by rotary hearth furnace hot water quenching device of this utility model, including rotary hearth furnace 1, turn
Sedimentation tank 12 that end stove discharge mechanism 2, hot-tub 11 connect with hot-tub 11, the horizontal tubular being positioned on hot-tub 11 are centrifuged
Dehydrator 4, the hot DRI elephant trunk 3 extended into from rotary hearth furnace 1 in the cylinder cavity of horizontal tubular centrifuge dehumidifier 4, to be similarly positioned in cylinder empty
The hopper 5 of intracavity, it is positioned at the first conveyer device 6 (in the present embodiment for sealing-tape machine 6) below hopper 5 outfan, is positioned at
Storage bin 8 below first conveyer device 6 outfan, it is positioned at the second conveyer device 10 below storage bin 8 discharging opening (in this reality
Execute in mode as sealing-tape machine 10), be positioned at the collecting-tank 13 below the second conveyer device 10 outfan；It is empty that hot DRI elephant trunk 3 enters cylinder
The porch of intracavity is provided with and connects the high-pressure water heating nozzle 12-2 of sedimentation tank 12 in order to spray high-pressure water heating to self-heating DRI elephant trunk 3
The high-temperature direct reduced iron material sent；This high-pressure water heating nozzle 12-2 also extends in described cylinder cavity.Described horizontal tubular
The lower part of centrifuge dehumidifier 4 is positioned in the hot water in hot-tub 11；Laterally tubular centrifuge dehumidifier 4 circumference is provided inwardly with grid
Filter screen；It also is provided with grid filter plate bottom hopper 5 lower output side.Described hopper 5 outfan extends a cavity.Described hot-tub
11 and the top of horizontal tubular centrifuge dehumidifier 4 be covered with vapour hood 15.This vapour hood 15 is arranged over steam smoke exhaust barrel 14.Steam
Vapour smoke exhaust barrel 14 connects with vapour hood 15.Described vapour hood 15 is additionally provided with the water-cooling-sprayer 16 on vapour hood top.This is cold
But sprinkler head 16 connects outside network.
It is additionally provided with the reversible tape machine 7 being positioned at below the second conveyer device 10, is equipped with below the two ends of reversible tape machine 7
Storage bin 8 entrance.High-pressure water heating nozzle 12-2 is connected by heat-exchanger pump 12-1 with sedimentation tank 12；Sedimentation tank 12 is arranged over water intaking
The mouth of pipe, pipe end is provided with drainage screen, intake pipe and heat-exchanger pump 12-1 inlet communication；Described collecting-tank 13 is same and heat-exchanger pump 12-1
Inlet communication.
Further, in order to fully recycle the water resource in whole device, right by above-mentioned water-cooling-sprayer 16
Steam in vapour hood 15 carries out being cooled to recycle-water and falls in hot-tub 11.And, below the first conveyer device 6, it is provided with
One backwater canal 17, the backwater end of the first backwater canal 17 is positioned on sedimentation tank 12 and can return to recycle-water to sedimentation tank 12
In；It is provided with the second backwater canal 17-1 below described second conveyer device 10, at the backwater end of the second backwater canal 17-1, is also located at collection
Recycle-water can be recovered in this collecting-tank 13 on pond 13.It is additionally provided with pushing off the slag at first, second backwater canal backwater end to filter
Plate 17-2 passes back into hot-tub 11 and collecting-tank 13 having prevented waste residue.
And on the basis of above-mentioned direct reduced iron by rotary hearth furnace hot water quenching device, this utility model is also disclosed making of this device
By method, the technical scheme of this using method is:
The high-temperature direct reduced iron that rotary hearth furnace 1 produces is discharged through rotary hearth furnace discharge mechanism 2, then enters horizontal stroke through hot DRI elephant trunk 3
In the cylinder cavity of tubular centrifuge dehumidifier 4, described high-pressure water heating nozzle 12-2 ejection high-pressure water heating is by high-temperature direct reduced iron
Chilling, high-temperature direct reduced iron is cooled to refrigerant in horizontal tubular centrifuge dehumidifier 4 lower end in the hot water that submerges further
Material；Laterally tubular centrifuge dehumidifier 4 circles the table water sloughing cooling material, and cooling material is from horizontal tubular centrifuge dehydration
Device top drops in hopper 5, and feeding groove 5 unloads to the first conveyer device 6, and transports and be discharged in storage bin 8；Refrigerant
Expect that the discharge valve 9 from storage bin 8 unloads to the second conveyer device 10 in order to be transported by cooling material.Punching water is in sedimentation tank 12
Naturally heavy clean.
Further, the water under high pressure hydraulic pressure of high-pressure water heating nozzle ejection is 0.1～0.2MPa, and water quality is turbid circulating water, water temperature
It it is 60～80 DEG C；Dehydrator circular motion speed is 1～5r/min；Rotary hearth furnace discharge mechanism roll surface is disposed with spiral knife face, rotation
Rotary speed is 3.1～31r/min.
And combine the explanation of the above-mentioned water resource fully recycled in whole device, high-temperature direct reduction pelletizing water quench cooling
But the steam produced during enters in steam smoke exhaust barrel 14, and steam smoke exhaust barrel 14 top is provided with water-cooling-sprayer 16, uses
In steam cooling, re-form aqueous water, be back in hot-tub；And by first backwater canal the 17, second backwater canal 17-1
Excessive effluent collection on first conveyer device 6 and the second conveyer device 10 is reused.Hot-tub ullage is provided with solid
Determining the moisturizing mouth of pipe, connect external fluid delivery conduit net, water quality is muddy water, and the part water caused in order to supplementary steam discharging damages.
Concrete methods of realizing of the present utility model and approach are a lot, and the above is only the side of being preferable to carry out of the present utility model
Formula.It should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle,
Can also make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.The present embodiment
In the clearest and the most definite each ingredient all can use prior art to be realized.
Claims (7)
1. a direct reduced iron by rotary hearth furnace hot water quenching device, is characterized in that, connects with hot-tub including rotary hearth furnace, hot-tub
Sedimentation tank, the horizontal tubular centrifuge dehumidifier being positioned on hot-tub, extend into horizontal tubular centrifuge dehumidifier from rotary hearth furnace
Cylinder cavity in hot DRI elephant trunk, the hopper being similarly positioned in a cavity, be positioned at the first conveyer device below hopper outfan,
It is positioned at the storage bin below the first conveyer device outfan, is positioned at the second conveyer device below storage bin discharging opening, is positioned at
Collecting-tank below two conveyer device outfans；Hot DRI elephant trunk enters the porch in cylinder cavity and is provided with the height connecting sedimentation tank
Pressure hot water nozzle；This high-pressure water heating nozzle also extends in described cylinder cavity.
2. direct reduced iron by rotary hearth furnace hot water quenching device as claimed in claim 1, is characterized in that, described horizontal tubular is centrifugal de-
The lower part of hydrophone is positioned in the hot water in hot-tub；Laterally tubular centrifuge dehumidifier circumference is provided inwardly with grid filter screen；Described
Hopper outfan extends a cavity.
3. direct reduced iron by rotary hearth furnace hot water quenching device as claimed in claim 2, is characterized in that, described hot-tub and laterally cylinder
The top of shape centrifuge dehumidifier is covered with vapour hood；This vapour hood is arranged over steam smoke exhaust barrel, steam smoke exhaust barrel and vapour hood
Connection；Described vapour hood is additionally provided with the water-cooling-sprayer on vapour hood top.
4. direct reduced iron by rotary hearth furnace hot water quenching device as claimed in claim 3, is characterized in that, under described first conveyer device
Side is provided with the first backwater canal, and the backwater end of the first backwater canal is positioned on hot-tub；It is provided with second below described second conveyer device
Backwater canal, is additionally provided with at the backwater end of the second backwater canal and reclaims the collecting-tank of recirculation water in the second backwater canal.
5. direct reduced iron by rotary hearth furnace hot water quenching device as claimed in claim 4, is characterized in that, be additionally provided with and be positioned at the second conveying
Reversible tape machine below device, is equipped with storage bin entrance below the two ends of reversible tape machine.
6. direct reduced iron by rotary hearth furnace hot water quenching device as claimed in claim 5, is characterized in that, high-pressure water heating nozzle and precipitation
Pond is connected by heat-exchanger pump；Sedimentation tank is arranged over the mouth of pipe of fetching water, and pipe end is provided with drainage screen, and intake pipe is with heat-exchanger pump import even
Logical；Described collecting-tank is same and heat-exchanger pump inlet communication.
7. direct reduced iron by rotary hearth furnace hot water quenching device as claimed in claim 1, is characterized in that, bottom hopper lower output side
It is provided with grid filter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620591527.0U CN205741090U (en) | 2016-06-15 | 2016-06-15 | A kind of direct reduced iron by rotary hearth furnace hot water quenching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620591527.0U CN205741090U (en) | 2016-06-15 | 2016-06-15 | A kind of direct reduced iron by rotary hearth furnace hot water quenching device |
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| Publication Number | Publication Date |
|---|---|
| CN205741090U true CN205741090U (en) | 2016-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620591527.0U Withdrawn - After Issue CN205741090U (en) | 2016-06-15 | 2016-06-15 | A kind of direct reduced iron by rotary hearth furnace hot water quenching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907911A (en) * | 2016-06-15 | 2016-08-31 | 江苏省冶金设计院有限公司 | Hot water quenching device and method for direct-reduced iron (DRI) of rotary hearth furnace |
-
2016
- 2016-06-15 CN CN201620591527.0U patent/CN205741090U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907911A (en) * | 2016-06-15 | 2016-08-31 | 江苏省冶金设计院有限公司 | Hot water quenching device and method for direct-reduced iron (DRI) of rotary hearth furnace |
| CN105907911B (en) * | 2016-06-15 | 2018-07-03 | 江苏省冶金设计院有限公司 | A kind of direct reduced iron by rotary hearth furnace hot water quenching device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20180703 |