CN106319117B - A kind of granular material uniform adding apparatus, installation method and application method - Google Patents
A kind of granular material uniform adding apparatus, installation method and application method Download PDFInfo
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Abstract
The present invention relates to a kind of granular material uniform adding apparatus, it is characterized in that, the adding set includes powder cabin, roof scrubber, coal pulverizer, run coal bin, bagroom, pulverized coal bin, main exhaust fan, the roof scrubber is arranged in the upper surface of powder cabin, the powder cabin is connected with coal pulverizer by pipeline, and stop valve, adjustable star-shaped dust-discharging valve, Fluidizer are provided on the pipeline；Feeder, stop valve are provided on pipeline between the run coal bin and coal pulverizer, the coal pulverizer is connected by coal pulverizer outlet conduit with bagroom, the bagroom is arranged in the upper surface of pulverized coal bin, the bagroom connects main exhaust fan by dust-precipitator outlet conduit, and the main exhaust fan other end connects chimney.
Description
Technical field
The present invention relates to a kind of adding sets, and in particular to a kind of granular material uniform adding apparatus, installation method and makes
With method, belong to technical field of blast furnace ironmaking.
Background technique
Feed coal for coking produces the hot coke of high temperature, the hot coke of high temperature (mesh during cooling by coking process
Preceding most enterprises are cooling using nitrogen, are commonly called as: " dry coke quenching ") part flour (being commonly called as: " CDQ powder ") can be generated；CDQ powder
With phosphorus content is high, fugitive constituent is low, can grind that coefficient is low, ignition point is low, the spy of granularity superfine (close to the fineness of qualified coal dust)
Point is equal to anthracite from the point of view of the physics of the flour.The pulverized coal preparation system of pulverized coal injection be by bituminous coal, anthracite by
According to run coal bin is sent into after certain ratio uniform mixing, the Mixture Density Networks in run coal bin enter coal pulverizer, Mixture Density Networks by feeder
Pass through hot-air seasoning in coal pulverizer, mill, is processed into qualified coal dust, under the action of main exhaust fan, coal dust is through cloth bag
Dust-precipitator enters pulverized coal bin after collecting, and meets injecting coal quantity demand of the injection system to the continuous coal powder injection of blast furnace.Using CDQ powder as smokeless
Coal and the coal dust of coal injection and pulverization system production spray into blast furnace together after evenly mixing, participate in blast furnace process, belong to blast furnace technology
The a part in field；To avoid the uniform coal dust of CDQ powder from uniformly mixing the secondary pollution of generation fugitive dust, the current same industry is all made of
CDQ powder after collection is added into water, drenches the run coal bin for passing through Belt Conveying together with raw coal to pulverized coal preparation system, then passes through powder processed
Enter pulverized coal bin after system processing, is supplied to injection system and sprays into blast furnace；If CDQ powder add water, drench it is insufficient, in raw coal belt
Necessarily lead to reentrainment of dust during conveying, pollutes environment；If CDQ powder adds water, drenches excess, necessarily cause the moisture of raw coal
It increases, feeder is caused to block, pulverized coal preparation system production is caused to be forced to interrupt；The moisture raising of one side raw coal leads to powder processed simultaneously
The energy consumption of system increases, and another aspect CDQ powder has the characteristics that coefficient can be ground in low, it and raw coal in pulverized coal preparation system production process
Enter coal pulverizer through feeder together, the grinding roller of coal pulverizer, wear liner can be caused serious in this way, influences grinding roller, liner plate makes
With the service life, the cost of overhaul of coal pulverizer is increased.Therefore, a kind of new technical solution solution of urgent need is deposited in the prior art
The technical issues of.
Summary of the invention
To solve the above problems, the invention discloses a kind of granular material uniform adding apparatus, the device energy
It enough solves the problems, such as that the granular material generated in coking dry coke quenching production process is uniformly added to coal injection and pulverization system, compensates for existing
The defect of technology.
To achieve the goals above, technical scheme is as follows, and granular material uniform adding apparatus, feature exists
In, the adding set include powder cabin, roof scrubber, coal pulverizer, run coal bin, bagroom, pulverized coal bin, main exhaust fan,
The roof scrubber is arranged in the upper surface of powder cabin, and the powder cabin is connected with coal pulverizer by pipeline, is provided on the pipeline
Stop valve, adjustable star-shaped dust-discharging valve, Fluidizer；Be provided on pipeline between the run coal bin and coal pulverizer feeder,
Stop valve, the coal pulverizer are connected by coal pulverizer outlet conduit with bagroom, and the bagroom is arranged in coal dust
The upper surface of storehouse, the bagroom connect main exhaust fan, the main exhaust fan other end connection by dust-precipitator outlet conduit
Chimney.
As an improvement of the present invention, the adding set further includes secondary air-supplying device, the secondary air-supplying device
Including tonifying Qi pipeline, secondary air compensating device, second gas regulating valve, gas flowmeter, the secondary air compensating device, second gas are adjusted
Valve, gas flowmeter are arranged on tonifying Qi pipeline.
As an improvement of the present invention, the adding set further includes hot fume system, and the hot fume system passes through
Pipeline connects coal pulverizer.
As an improvement of the present invention, the adding set further includes gas flowmeter and first gas regulating valve, institute
It states gas flowmeter and first gas regulating valve is arranged on the pipeline being connected with Fluidizer.
The installation method of granular material uniform adding apparatus, which is characterized in that it includes the following steps；1) prepare band weighing
The CDQ powder powder cabin of device, installs roof scrubber at an upper portion thereof, installs stop valve, adjustable star-shaped dust-discharging valve, stream in lower part
Change device, secondary air compensating device and relevant ash conveying pipe and coal pulverizer is attached, 2) later by gas flowmeter, gas control valve
It is connect by pipeline with Fluidizer row, gas flowmeter, gas control valve 9 is attached by pipeline and secondary air compensating device,
3) by hot fume system by pipeline connect coal pulverizer, while the top of coal pulverizer by pipeline connect run coal bin, run coal bin and
Be provided with feeder and stop valve on pipeline between coal pulverizer, 4) the coal pulverizer outlet conduit that passes through of coal pulverizer connects cloth bag and receives
Storage, the lower section of cloth bag collector connect pulverized coal bin, and pulverized coal bin connects main exhaust fan, main row by bagroom outlet conduit
The blower other end connects chimney.
The use method of granular material uniform adding apparatus, which is characterized in that the described method comprises the following steps；1) first will
CDQ powder is transported in CDQ powder cabin by the way that groove tank car is continual, after pulverized coal preparation system starting works normally, opens second gas
Regulating valve sprays gas into secondary air compensating device, it is ensured that ash conveying pipe is unimpeded；2) first gas regulating valve is opened into Fluidizer
Spraying gas, it is ensured that the ash conveying pipe between Fluidizer and secondary air compensating device is unimpeded, and 3) starting star-shaped dust-discharging valve, open cutting
Valve, while the revolving speed of the coal-supplying amount adjust automatically star-shaped dust-discharging valve according to pulverized coal preparation system feeder, 4) according to star-shaped dust-discharging valve
Revolving speed corresponds to secondary air compensating amount automatically, and the size of secondary air compensating amount is directly fed back by gas flowmeter, adjusts second gas with this
CDQ powder is uniformly added in the middle part of coal pulverizer by the aperture of regulating valve；The raw coal in run coal bin is by adjustable coal conservation simultaneously
Feeder is endlessly sent into coal pulverizer under the action of raw coal gravity, and raw coal is milled into qualified coal dust through coal pulverizer,
Hot fume system is dried under providing to the hot fume effect inside coal pulverizer；5) under the action of main exhaust fan, by coal-grinding
CDQ powder inside machine, qualified coal dust and hot gas are brought into bagroom by bagroom inlet duct, are passed through
The separation of bagroom, qualified coal dust enter pulverized coal bin and use for injection system, and hot gas is through bagroom outlet conduit
It is discharged into atmosphere by main exhaust fan by chimney；6) before pulverized coal preparation system stops powder processed, stop valve is first closed, after ten minutes sequentially
Gradually close star-shaped dust-discharging valve, first gas regulating valve and second gas regulating valve.
Compared with the existing technology, advantages of the present invention is as follows, 1) entire Technical Design is ingenious, compact-sized, and 2) it should
CDQ powder is transported in CDQ powder cabin by technical solution by the way that groove tank car is continual, while being additionally arranged silo roof on CDQ powder cabin top
Deduster and use pipeline CDQ powder, can thoroughly solve the problems, such as the secondary pollution of fugitive dust；3) pass through star-shaped dust-discharging valve and system
The feeder of powder system interlocks, and controls the revolving speed of star-shaped dust-discharging valve according to the coal-supplying amount of feeder in this way, is come with this by prior
The ratio of setting controls CDQ powder additional amount, solves the problems, such as that CDQ powder is uniformly added into；4) pacify on the pipeline of star-shaped dust-discharging valve lower part
Fluidizer is filled, the CDQ powder that the gas stirring star-shaped dust-discharging valve that Fluidizer ejects gets off can increase CDQ powder mobility, avoid
The unsmooth problem of CDQ powder blanking；5) secondary air compensating device is installed on ash conveying pipe, in eject gas-assisted of secondary air compensating device and
Can continually be sent into CDQ powder under the effect of pulverized coal preparation system main exhaust fan to be added in the middle part of coal pulverizer (avoids conveyance conduit stifled
Plug) and the mixed coal powder produced of coal pulverizer uniformly mix, collected through bagroom and enter pulverized coal bin, such control
Technology can make up for it the defect of the prior art；6) technical solution provides that a kind of structure is simple, reliable operation, gas for people
Consumption it is small and can guarantee by granular material can uniformly, continuous, the stable operation method that is added to pulverized coal preparation system so that CDQ
Powder and coal dust obtain uniformly, be sufficiently mixed, thoroughly solve the problems, such as the secondary pollution of fugitive dust；It can be from mill using this method CDQ powder
Enter in the middle part of coal machine, significantly reduces grinding roller in coal pulverizer production process, wear liner serious problems in this way, extend mill
The service life of roller, liner plate；Simultaneously solve former technology CDQ powder by fetch water addition caused by run coal bin blocking and reduce fetch water
The energy consumption problem dried in pulverized coal preparation system of CDQ powder；The present invention is suitable for industrialized production and processing cost is low, has good
Environmental benefit and economic benefit；7) cost is relatively low, high-efficient by technical solution behaviour, promotes and applies convenient for large-scale.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
In figure: 1, roof scrubber；2, the CDQ powder powder cabin with weighing device；3, stop valve, 4, adjustable star-like unload ash
Valve；5, Fluidizer；6, gas control valve；7, gas flowmeter；8, secondary air compensating device, 9, gas control valve, 10, gas stream
Meter, 11, hot fume system, 12, coal pulverizer, 13, feeder；14, stop valve, 15, run coal bin, 16, coal pulverizer outlet
Road；17, bagroom, 18, dust-precipitator outlet conduit, 19, main exhaust fan, 20, chimney, 21, pulverized coal bin.
Specific embodiment
In order to further enhance the appreciation and understanding of the invention, with reference to the accompanying drawings and detailed description, this is furtherd elucidate
Invention.
Embodiment 1:
Referring to Fig. 1, granular material uniform adding apparatus, the adding set includes powder cabin 2, roof scrubber 1, coal pulverizer
12, run coal bin 15, bagroom 17, pulverized coal bin, 21 main exhaust fans, the roof scrubber are arranged in the upper surface of powder cabin, institute
It states powder cabin 2 to connect with coal pulverizer 12 by pipeline, stop valve 3, adjustable star-shaped dust-discharging valve 4, stream is provided on the pipeline
Change device 5；Feeder 13, stop valve 14, the coal pulverizer 12 are provided on pipeline between the run coal bin 15 and coal pulverizer 12
It is connected by coal pulverizer outlet conduit 16 with bagroom 17, the bagroom 17 is arranged in the upper surface of pulverized coal bin 21,
The bagroom connects main exhaust fan 19 by dust-precipitator outlet conduit, and the main exhaust fan other end connects chimney 20.
In the program, pulverized coal preparation system is the main equipment of pulverized coal injection, it is main include the hot fume system 11 for providing a system to heat, to
System provide raw material run coal bin 15, to the uniform coal supply of system feeder 13, facilitate feeder overhaul stop valve 14, can
By raw coal be milled into coal dust coal pulverizer 12, can by bagroom 17 that coal dust is separated with gas, cloth bag can be received receive
Dirt device 17 collects the pulverized coal bin 21 of coal dust, provides the main exhaust fan 19 and cloth bag that power is capable of control system air quantity to pulverized coal preparation system
The chimney 20 of dust-precipitator inlet duct 16, bagroom outlet conduit 18 and main exhaust fan.The technical solution structure is simple, work
Make that reliable, gas consumption is small and can guarantee by granular material can uniformly, continuous, stable operation be added to the side of pulverized coal preparation system
Method so that CDQ powder and coal dust obtain uniformly, be sufficiently mixed, thoroughly solve the problems, such as the secondary pollution of fugitive dust.
Embodiment 2:
Referring to Fig. 1, as an improvement of the present invention, the adding set further includes secondary air-supplying device, described secondary
Making-up air device includes tonifying Qi pipeline, secondary air compensating device 8, second gas regulating valve 9, gas flowmeter 10, the secondary air compensating device
8, second gas regulating valve 9, gas flowmeter 10 are arranged on tonifying Qi pipeline.Secondary air compensating device is installed on tonifying Qi pipeline,
CDQ powder can be continually sent into and be added under the gas-assisted and pulverized coal preparation system main exhaust fan effect that secondary air compensating device ejects
Enter in the middle part of coal pulverizer, avoids the mixed coal powder that conveyance conduit blocks and coal pulverizer is produced from uniformly mixing, through bagroom
It collects and enters pulverized coal bin, such control technology can make up for it the defect of the prior art.Remaining structure and advantage and embodiment 1 are complete
It is exactly the same.
Embodiment 3:
Referring to Fig. 1, as an improvement of the present invention, the adding set further includes hot fume system, the hot fume
System connects coal pulverizer by pipeline, for drying the coal dust in coal pulverizer.Remaining structure and advantage and the complete phase of embodiment 1
Together.
Embodiment 4:
Referring to Fig. 1, as an improvement of the present invention, the adding set further includes gas flowmeter 7 and first gas
Regulating valve 6, the gas flowmeter 7 and first gas regulating valve 6 are arranged on the pipeline being connected with Fluidizer 5, star-like
Fluidizer is installed, the CDQ powder that the gas stirring star-shaped dust-discharging valve that Fluidizer ejects gets off can be on the pipeline of unloading valve lower part
Increase CDQ powder mobility, avoids the unsmooth problem of CDQ powder blanking；Gas flowmeter 7 and gas control valve 6 are used for auxiliary adjustment CDQ
Powder cutting material situation, it is ensured that the smooth blanking of CDQ powder.Remaining structure and advantage are identical with embodiment 1.
Embodiment 5:
Referring to Fig. 1, the installation method of granular material uniform adding apparatus comprising following steps；1) prepare band weighing dress
The CDQ powder powder cabin 2 set, at an upper portion thereof install roof scrubber 1, lower part install stop valve 3, adjustable star-shaped dust-discharging valve 4,
Fluidizer 5, secondary air compensating device 8 and relevant ash conveying pipe and coal pulverizer 12 are attached, and 2) later by gas flowmeter 7, gas
Body regulating valve 6 is connect by pipeline with 5 row of Fluidizer, and gas flowmeter 10, gas control valve 9 are passed through pipeline and secondary air compensating
Device 8 is attached, 3) hot fume system 11 is connected into coal pulverizer 12 by pipeline, while the top of coal pulverizer 12 passes through pipeline company
Connect run coal bin, be provided with feeder and stop valve on the pipeline between run coal bin and coal pulverizer, 4) coal pulverizer passes through coal pulverizer
Outlet conduit connects cloth bag collector, and the lower section of cloth bag collector connects pulverized coal bin, and pulverized coal bin passes through bagroom outlet
Road connects main exhaust fan, and the main exhaust fan other end connects chimney.The technical solution, will be by refining by increasing a CDQ powder cabin
The CDQ powder that the hot high-temperature coke that burnt process is produced generates after dry coke quenching is transported to by the way that groove tank car is continual
In CDQ powder cabin, while roof scrubber is additionally arranged on CDQ powder cabin top；CDQ powder can be controlled by being provided in CDQ powder cabin lower part
Being adjusted for dreg discharge amount, installs Fluidizer, while secondary benefit is installed on ash conveying pipe on the pipeline of star-shaped dust-discharging valve lower part
CDQ powder is transported in the middle part of coal pulverizer by gas device, and under the action of main exhaust fan and coal dust that coal pulverizer is produced is together through cloth
Bag collector, which is collected, enters pulverized coal bin, and qualified coal dust is provided for system of blast furnace injection.
Embodiment 6:
Referring to Fig. 1, the use method of granular material uniform adding apparatus be the described method comprises the following steps；1) first by CDQ
Powder is transported in CDQ powder cabin by the way that groove tank car is continual, after pulverized coal preparation system starting works normally, is opened second gas and is adjusted
Valve 9 sprays gas into secondary air compensating device 8, it is ensured that ash conveying pipe is unimpeded；2) first gas regulating valve 6 is opened into Fluidizer 5
Spraying gas, it is ensured that the ash conveying pipe between Fluidizer 5 and secondary air compensating device 8 is unimpeded, and 3) starting star-shaped dust-discharging valve 4, opening is cut
Disconnected valve 3, while the revolving speed of the coal-supplying amount adjust automatically star-shaped dust-discharging valve 4 according to pulverized coal preparation system feeder 13,4) it is unloaded according to star-like
The revolving speed of grey valve 4 corresponds to secondary air compensating amount automatically, and the size of secondary air compensating amount is directly fed back by gas flowmeter 10, adjusted with this
CDQ powder is uniformly added in the middle part of coal pulverizer by the aperture of second gas regulating valve 9；15 raw coal passes through in run coal bin simultaneously
The feeder 13 of adjustable coal conservation is endlessly sent into coal pulverizer 12 under the action of raw coal gravity, and raw coal is ground through coal pulverizer 12
Qualified coal dust is worn into, is dried in the case where hot fume system 11 is provided to the hot fume effect inside coal pulverizer 12；5) in master
Under the action of exhaust blower, the CDQ powder inside coal pulverizer, qualified coal dust and hot gas are passed through into bagroom inlet duct
16 bring into bagroom 17, and by the separation of bagroom 17, qualified coal dust enters pulverized coal bin 21 and makes for injection system
With hot gas is discharged into atmosphere by main exhaust fan 19 by chimney 20 through bagroom outlet conduit 18；6) pulverized coal preparation system stops
Only before powder processed, stop valve 3 is first closed, sequentially gradually closes star-shaped dust-discharging valve 4, first gas regulating valve 6 and the after ten minutes
Two gas control valves 9.It can be entered in the middle part of coal pulverizer using this method CDQ powder, significantly reduce coal pulverizer in this way and produced
Grinding roller, wear liner serious problems in journey, extend the service life of grinding roller, liner plate；It is logical to solve former technology CDQ powder simultaneously
Cross the energy consumption problem that the CDQ powder that the blocking of run coal bin caused by addition and reduction are fetched water of fetching water is dried in pulverized coal preparation system；The present invention is suitable
It is suitable for industrialized production and processing cost is low, there is good environmental benefit and economic benefit.If pulverized coal preparation system is according to anthracite
There is no limit for the gas that production, Fluidizer 5 and secondary air compensating device 8 convey, if pulverized coal preparation system is produced according to Mixture Density Networks, Fluidizer 5
The gas conveyed with secondary air compensating device 8 is necessary for inert gas, it is ensured that the safety in production of pulverized coal preparation system.
The present invention can also be formed new by least one of described technical characteristic of embodiment 2,3,4 in combination with example 1
Embodiment.
It should be noted that above-described embodiment is only presently preferred embodiments of the present invention, there is no be used to limit the present invention
Protection scope, the equivalent substitution or substitution made based on the above technical solution belongs to protection model of the invention
It encloses.
Claims (6)
1. a kind of granular material uniform adding apparatus, which is characterized in that the adding set includes powder cabin, roof scrubber, mill
Coal machine, run coal bin, cloth bag collector, pulverized coal bin, main exhaust fan, the roof scrubber are arranged in the upper surface of powder cabin, the powder
Storehouse is connected with coal pulverizer by pipeline, and stop valve, adjustable star-shaped dust-discharging valve, Fluidizer are provided on the pipeline；It is described
Be provided with feeder, stop valve on pipeline between run coal bin and coal pulverizer, the coal pulverizer by coal pulverizer outlet conduit with
Cloth bag collector is connected, and in the upper surface of pulverized coal bin, the cloth bag collector is exported by dust-precipitator for the cloth bag collector setting
Pipeline connects main exhaust fan, and the main exhaust fan other end connects chimney.
2. granular material uniform adding apparatus according to claim 1, which is characterized in that the adding set further includes two
Secondary making-up air device, the secondary air-supplying device include tonifying Qi pipeline, secondary air compensating device, second gas regulating valve, gas flowmeter,
The secondary air compensating device, second gas regulating valve, gas flowmeter are arranged on tonifying Qi pipeline.
3. granular material uniform adding apparatus according to claim 2, which is characterized in that the adding set further includes heat
Flue gas system, the hot fume system connect coal pulverizer by pipeline.
4. granular material uniform adding apparatus according to claim 3, which is characterized in that the adding set further includes gas
Flowmeter body and first gas regulating valve, the gas flowmeter and first gas regulating valve are arranged in be connected with Fluidizer
On pipeline.
5. using the installation method of granular material uniform adding apparatus as claimed in claim 4, which is characterized in that it includes following
Step；1) prepare the CDQ powder powder cabin with weighing device, roof scrubber is installed at an upper portion thereof, stop valve, adjustable is installed in lower part
Star-shaped dust-discharging valve, Fluidizer, secondary air compensating device and the relevant ash conveying pipe and coal pulverizer of section are attached, and 2) later by gas
Flowmeter, first gas regulating valve are attached by pipeline and Fluidizer, and gas flowmeter, second gas regulating valve are passed through
Pipeline is attached with secondary air compensating device, 3) hot fume system is connected into coal pulverizer by pipeline, while the top of coal pulverizer is logical
Piping connects run coal bin, is provided with feeder and stop valve on the pipeline between run coal bin and coal pulverizer, 4) coal pulverizer passes through
Coal pulverizer outlet conduit connects cloth bag collector, and the lower section of cloth bag collector connects pulverized coal bin, and pulverized coal bin passes through cloth bag collector
Outlet conduit connects main exhaust fan, and the main exhaust fan other end connects chimney.
6. using the application method of granular material uniform adding apparatus as claimed in claim 4, which is characterized in that the method packet
Include following steps；1) CDQ powder is transported in CDQ powder cabin by the way that groove tank car is continual first, it is normal in pulverized coal preparation system starting
After work, opens second gas regulating valve and spray gas into secondary air compensating device, it is ensured that ash conveying pipe is unimpeded；2) the first gas is opened
Body regulating valve sprays gas into Fluidizer, it is ensured that and the ash conveying pipe between Fluidizer and secondary air compensating device is unimpeded, and 3) starting star
Type unloading valve, opening stop valve, while the revolving speed of the coal-supplying amount adjust automatically star-shaped dust-discharging valve according to pulverized coal preparation system feeder, 4)
Secondary air compensating amount is corresponded to automatically according to the revolving speed of star-shaped dust-discharging valve, the size of secondary air compensating amount is directly fed back by gas flowmeter,
CDQ powder is uniformly added in the middle part of coal pulverizer by the aperture that second gas regulating valve is adjusted with this；Raw coal in run coal bin simultaneously
It is endlessly sent into coal pulverizer under the action of raw coal gravity by the feeder of adjustable coal conservation, raw coal is milled through coal pulverizer
At qualified coal dust, dried in the case where hot fume system is provided to the hot fume effect inside coal pulverizer；5) in main exhaust fan
Under the action of, the CDQ powder inside coal pulverizer, qualified coal dust and hot gas are brought into cloth through cloth bag collector inlet duct
In bag collector, the separation through cloth bag collector, qualified coal dust enters pulverized coal bin and uses for injection system, and hot gas is through cloth bag
Collector outlet conduit is discharged into atmosphere by main exhaust fan by chimney；6) before pulverized coal preparation system stops powder processed, stop valve is first closed,
Star-shaped dust-discharging valve, first gas regulating valve and second gas regulating valve are sequentially gradually closed after ten minutes.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020931A (en) * | 2007-03-21 | 2007-08-22 | 鞍钢股份有限公司 | Blast furnace dry quenching powder spraying process and equipment |
| CN102206724A (en) * | 2011-05-03 | 2011-10-05 | 苏亚杰 | Method for coproducing directly reduced iron in process of coke dry quenching by coke oven gas |
| CN102746915A (en) * | 2012-07-31 | 2012-10-24 | 内蒙古包钢钢联股份有限公司 | Mixed pulverized coal suitable for blast furnace spraying and blowing |
| CN104212508A (en) * | 2014-09-28 | 2014-12-17 | 四川德胜集团钒钛有限公司 | Blast furnace blowing mixed fuel and blowing method thereof |
-
2015
- 2015-06-30 CN CN201510372302.6A patent/CN106319117B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020931A (en) * | 2007-03-21 | 2007-08-22 | 鞍钢股份有限公司 | Blast furnace dry quenching powder spraying process and equipment |
| CN102206724A (en) * | 2011-05-03 | 2011-10-05 | 苏亚杰 | Method for coproducing directly reduced iron in process of coke dry quenching by coke oven gas |
| CN102746915A (en) * | 2012-07-31 | 2012-10-24 | 内蒙古包钢钢联股份有限公司 | Mixed pulverized coal suitable for blast furnace spraying and blowing |
| CN104212508A (en) * | 2014-09-28 | 2014-12-17 | 四川德胜集团钒钛有限公司 | Blast furnace blowing mixed fuel and blowing method thereof |
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| CN106319117A (en) | 2017-01-11 |
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