CN205741088U - A kind of direct reduced iron by rotary hearth furnace granulating unit - Google Patents
A kind of direct reduced iron by rotary hearth furnace granulating unit Download PDFInfo
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- CN205741088U CN205741088U CN201620585966.0U CN201620585966U CN205741088U CN 205741088 U CN205741088 U CN 205741088U CN 201620585966 U CN201620585966 U CN 201620585966U CN 205741088 U CN205741088 U CN 205741088U
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Abstract
This utility model provides a kind of and rotary hearth furnace processes the granulating unit of DRI that iron content solid waste produces, including rotary hearth furnace, flushing device, connection rotary hearth furnace and flushing device hot DRI elephant trunk, hot-tub, allotter, be positioned at the first conveyer device above allotter, horizontal tubular centrifuge dehumidifier, be positioned at the storage bin below the first conveyer device outfan, cooling pond etc.；Allotter and the first conveyer device are respectively positioned in the cylinder cavity in horizontal tubular centrifuge dehumidifier；Hot DRI elephant trunk enters the porch of flushing device and is provided with the high-pressure cooling water spout connecting cooling pond, 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 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.Owing to dragveyer tool afterbody is placed in swimmer's pool
In, equipment soaks in the hot water, and ageing equipment is serious, and is crowded with cooling material bottom swimmer's pool, to dragveyer tool afterbody base
Pushing, easily cause equipment stuck, increase resistance in operation process, the fault rate that equipment runs is higher, and base is in swimmer's pool
Maintenance difficulty, it is difficult to meet continuous prodution requirement.
It is therefore desirable to propose a kind of new technical scheme to solve problem above.
Utility model content
The purpose of this utility model is to provide a kind of DRI that rotary hearth furnace processes the production of iron content solid waste
Granulating unit, to realizing the cooling of DRI, it is simple to conveying, ore grinding, magnetic separation and briquetting, with finally meet electric furnace refining
Steel 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 granulating unit, including rotary hearth furnace, flushing device, connection rotary hearth furnace and flushing device
Hot DRI elephant trunk, hot-tub, the allotter extended into from flushing device in hot-tub, be positioned at above allotter first conveying
Device, horizontal tubular centrifuge dehumidifier, it is positioned at the storage bin below the first conveyer device outfan, is positioned under storage bin discharging opening
Side the second conveyer device, be positioned at the collecting-tank below the second conveyer device outfan, cooling pond；Allotter and the first conveying
Device is respectively positioned in the cylinder cavity in horizontal tubular centrifuge dehumidifier；Hot DRI elephant trunk enters the porch of flushing device and is provided with even
Connect the high-pressure cooling water spout of cooling pond.
Further, the top of described hot-tub and horizontal tubular centrifuge dehumidifier is covered with vapour hood；Described punching fills
Putting top and be covered with steam smoke exhaust barrel, steam smoke exhaust barrel connects with vapour hood；Described steam smoke exhaust barrel is additionally provided with and arranges at steam
The water-cooling-sprayer on chimney top.
Further, filtering ponds and heat-exchanger pump it are additionally provided with；Wherein hot-tub is connected with filtering ponds by pipeline, hot-tub and
Filtering ponds connecting pipe end is provided with drainage screen, and hot-tub ullage is provided with the moisturizing mouth of pipe, connects external fluid delivery conduit net；Heat-exchanger pump
Connected with hot-tub and steam smoke exhaust barrel bottom compartment by pipeline.
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, described cooling pond is arranged over cooler, and is provided with the first cooling pump and the second cooling pump, and first
Cooling pump is by cooler and high-pressure cooling water spout connection, and filtering ponds are connected by this second cooling pump with cooler.
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.
Beneficial effect: compared with prior art, the beneficial effects of the utility model include:
(1) use high-pressure cooling water punching rotary hearth furnace high-heat hot material, utilize hydraulic head to implement the operating of material, and in dehydration
Completing dehydration in device, after finally can realizing cooling, DRI pelletizing control temperature is～50 DEG C, moisture content 15～20%；
(2) system cooling water low cost, cycling rate is high；
(3) what system had taken into full account that steam causes is excessive with water loss and material table water, uses cooling and arranges back
Water channel has reclaimed water resource to greatest extent, and is recycled；
(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 granulating unit.
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 granulating unit of this utility model, including producing, high temperature is direct
The rotary hearth furnace 1 of reduced iron, flushing device 3, connect rotary hearth furnace 1 and the hot DRI elephant trunk 2 of flushing device 3, hot-tub 11, from punching
Device 3 extends into the allotter 4 in hot-tub 11, is positioned at the first conveyer device 6 above allotter 4 (in the present embodiment
For sealing-tape machine 6), horizontal tubular centrifuge dehumidifier 5, be positioned at the storage bin 8 below the first conveyer device 6 outfan, be positioned at bin stock
The second conveyer device 10 (in the present embodiment for sealing-tape machine 10) below the discharging opening of storehouse 8, to be positioned at the second conveyer device 10 defeated
Go out the collecting-tank 13 below end, cooling pond 15, the filtering ponds 12 of connection hot-tub 11 and heat-exchanger pump 11-1；Hot DRI elephant trunk 2 enters
The porch entering flushing device 3 is provided with the high-pressure cooling water spout connecting cooling pond 15, in order to spray high-pressure cooling water to certainly
The high-temperature direct reduced iron material that hot DRI elephant trunk 2 is sent；The top of hot-tub 11 and laterally tubular centrifuge dehumidifier 5 is covered with
Vapour hood 16；Being covered with steam smoke exhaust barrel 17 above flushing device 3, steam smoke exhaust barrel 17 and vapour hood 16 are by fire-retardant, heat-resisting
Limiting temperature is the macromolecule material pipeline communication of 200 DEG C；Described steam smoke exhaust barrel 17 is additionally provided with in steam smoke exhaust barrel 17
The water-cooling-sprayer 18 in portion, this water-cooling-sprayer 18 connects outside network.Hot-tub 11 is connected with filtering ponds 12 by pipeline, hot water
Pond 11 and filtering ponds 12 connecting pipe end are provided with drainage screen, and hot-tub 11 ullage is provided with the moisturizing mouth of pipe, connect outside water supply
Pipe network；Heat-exchanger pump 11-1 is connected with hot-tub 11 and steam smoke exhaust barrel 17 bottom compartment by pipeline.Wherein, allotter 4 and first
Conveyer device 6 is respectively positioned in the cylinder cavity in horizontal tubular centrifuge dehumidifier 5., it is additionally provided with and is positioned at below the second conveyer device 10
Reversible tape machine 7, be equipped with storage bin 8 entrance below the two ends of reversible tape machine 7.
Further, in order to fully recycle the water resource in whole device, right by above-mentioned water-cooling-sprayer 18
Steam in steam smoke exhaust barrel 17 carries out being cooled to recycle-water and falls in hot-tub 11.And, set below the first conveyer device 6
The first backwater canal 19, the backwater end of the first backwater canal 19 is had to be positioned on hot-tub 11 and can return to recycle-water to hot-tub
In 11；It is provided with the second backwater canal 19-1 below described second conveyer device 10, is additionally provided with at the backwater end of the second backwater canal 19-1
Reclaim the collecting-tank 13 of recirculation water in the second backwater canal.It is additionally provided with pushing off the slag screen plate 19-2 at first, second backwater canal backwater end
To have prevented waste residue from passing back into hot-tub 11 and collecting-tank 13.
Further, described cooling pond 15 is arranged over cooler 14, and is provided with the first cooling pump 15-1 and second cold
But pump 12-1, the first cooling pump 15-1 is by cooler 14 and high-pressure cooling water spout connection, and this second cooling pump 12-1 will filter
Pond 12 connects with cooler 14.
And on the basis of above-mentioned direct reduced iron by rotary hearth furnace granulating unit, this utility model is also disclosed the use of this device
Method, the technical scheme of this using method is:
The high-temperature direct reduced iron that rotary hearth furnace 1 produces, through hot DRI elephant trunk 2, enters in flushing device 3, and described high pressure cools down
Water spout ejection high-pressure cooling water is by high-temperature direct reduced iron carry over score orchestration 4, and it is centrifugal de-that the allocated device 4 is discharged into horizontal tubular
In 5 cavitys of hydrophone；Laterally tubular centrifuge dehumidifier 5 circles the table water sloughing cooling material, and cooling material is from laterally
Tubular centrifuge dehumidifier 5 top drops on the first conveyer device 6, and transports and be discharged in storage bin 8；Cooling material is from bin stock
Storehouse 8 self-discharging valve 9 unloads to the second conveyer device 10 in order to be transported by cooling material.Here may further determine that and rush assembling device
Inner high voltage water hydraulic pressure is 0.2～0.3MPa, and water quality is turbid circulating water, and water temperature is 30～40 DEG C, material-water ratio t/m3Normal is 1:5～1:
8；Material flow speed control is 0.5～1t/min；Dehydrator circular motion speed is 0.3～1.4r/min.And the second cooling pump 12-1
Hot water inherent filtration pond 12 is sent into cooler 14 is cooled to 30～40 DEG C；And be collected in cooling bay 15；By the first cooling pump
15-1 is in high-pressure cooling water spout delivers to flushing device 3, for the water quenching cooling to high-temperature direct reduction pelletizing；First cooling
Pump 15-1 outlet pressure is 0.2～0.3MPa.
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 17, and steam smoke exhaust barrel 17 top is provided with water-cooling-sprayer 18, uses
In steam cooling, re-form aqueous water, be back in hot-tub 11；And by the first backwater canal, the second backwater canal by the
Excessive effluent collection recycling on one conveyer device and the second conveyer device.
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 (6)
1. a direct reduced iron by rotary hearth furnace granulating unit, is characterized in that, including rotary hearth furnace, flushing device, connection rotary hearth furnace and
The hot DRI elephant trunk of flushing device, hot-tub, the allotter extended into from flushing device in hot-tub, it is positioned at above allotter
First conveyer device, horizontal tubular centrifuge dehumidifier, it is positioned at the storage bin below the first conveyer device outfan, is positioned at storage bin
The second conveyer device below discharging opening, it is positioned at the collecting-tank below the second conveyer device outfan, cooling pond；Allotter and
First conveyer device is respectively positioned in the cylinder cavity in horizontal tubular centrifuge dehumidifier；Hot DRI elephant trunk enters the entrance of flushing device
Place is provided with the high-pressure cooling water spout connecting cooling pond.
2. direct reduced iron by rotary hearth furnace granulating unit as claimed in claim 1, is characterized in that, described hot-tub and laterally tubular
The top of centrifuge dehumidifier is covered with vapour hood；Steam smoke exhaust barrel, steam smoke exhaust barrel and steaming it is covered with above described flushing device
Vapour cover connects；Described steam smoke exhaust barrel is additionally provided with the water-cooling-sprayer on steam smoke exhaust barrel top.
3. direct reduced iron by rotary hearth furnace granulating unit as claimed in claim 2, is characterized in that, be additionally provided with filtering ponds and hot water
Pump；Wherein hot-tub is connected with filtering ponds by pipeline, and hot-tub and filtering ponds connecting pipe end are provided with drainage screen, hot-tub
Ullage is provided with the moisturizing mouth of pipe, connects external fluid delivery conduit net；Heat-exchanger pump is by pipeline and hot-tub and steam smoke exhaust barrel bottom compartment
Connection.
4. direct reduced iron by rotary hearth furnace granulating unit as claimed in claim 3, is characterized in that, below described first conveyer device
Being provided with the first backwater canal, the backwater end of the first backwater canal is positioned on hot-tub；It is provided with second time below described second conveyer device
Water channel, 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 granulating unit as claimed in claim 4, is characterized in that, described cooling pond is arranged over
Cooler, and it is provided with the first cooling pump and the second cooling pump, the first cooling pump, should by cooler and high-pressure cooling water spout connection
Filtering ponds are connected by the second cooling pump with cooler.
6. direct reduced iron by rotary hearth furnace granulating unit as claimed in claim 1, is characterized in that, is additionally provided with and is positioned at the second conveying dress
Put the reversible tape machine of lower section, below the two ends of reversible tape machine, be equipped with storage bin entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620585966.0U CN205741088U (en) | 2016-06-15 | 2016-06-15 | A kind of direct reduced iron by rotary hearth furnace granulating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620585966.0U CN205741088U (en) | 2016-06-15 | 2016-06-15 | A kind of direct reduced iron by rotary hearth furnace granulating unit |
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| Publication Number | Publication Date |
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| CN205741088U true CN205741088U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620585966.0U Expired - Fee Related CN205741088U (en) | 2016-06-15 | 2016-06-15 | A kind of direct reduced iron by rotary hearth furnace granulating unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969927A (en) * | 2016-06-15 | 2016-09-28 | 江苏省冶金设计院有限公司 | Water quenching device for direct reduced iron (DRI) produced by rotary hearth furnace and method |
-
2016
- 2016-06-15 CN CN201620585966.0U patent/CN205741088U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969927A (en) * | 2016-06-15 | 2016-09-28 | 江苏省冶金设计院有限公司 | Water quenching device for direct reduced iron (DRI) produced by rotary hearth furnace and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20161130 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20161130 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20180615 |