CN206385190U - A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron - Google Patents
A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron Download PDFInfo
- Publication number
- CN206385190U CN206385190U CN201621378159.8U CN201621378159U CN206385190U CN 206385190 U CN206385190 U CN 206385190U CN 201621378159 U CN201621378159 U CN 201621378159U CN 206385190 U CN206385190 U CN 206385190U
- Authority
- CN
- China
- Prior art keywords
- gas
- reduction
- shaft kiln
- sponge iron
- based shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses the gas-based shaft kiln and its method that a kind of cold bound pellet prepares sponge iron.The gas-based shaft kiln generally includes feeding bin, multiple middle batch cans and reduction storehouse.Connected, connected between middle batch can and reduction storehouse by reducing storehouse feeding mouth by middle batch can feeding mouth between feeding bin and middle batch can.Meanwhile, the invention also discloses the method that sponge iron is prepared using the gas-based shaft kiln.Gas-based shaft kiln of the present utility model and its method concentrate on the drying, preheating and reduction process of cold bound pellet to be completed in gas-based shaft kiln feeding bin, middle batch can and reduction storehouse, it enormously simplify technological process, save equipment needed for acid pellet or agglomerates preparation process, reduce the pressure in vertical range and the frictional force from pelletizing around that bottom cold bound pellet is born, reduce pelletizing pulverization rate, comprehensive energy consumption is also a saving, the degree of metalization and production efficiency of sponge iron is improved.
Description
Technical field
The utility model is related to metallurgical technology field, specifically, and the utility model is related to prepares sea by cold bound pellet
The gas-based shaft kiln of continuous iron.
Background technology
Gas-based shaft kiln prepares sponge iron and uses acid pellet or agglomerates for raw material, generally requires to pass through cold bound pellet
Crossing after drying, be calcined and cooling down to enter in gas-based shaft kiln.Green-ball drying process is carried out in drying grate, and roasting is often being returned
Carried out in rotary kiln, be cooled on central cooler and carry out.Gas-based shaft kiln prepares raw material that sponge iron used under room temperature or low temperature
Acid pellet, this is related to the drying, roasting and cooling procedure of cold bound pellet, and long flow path, equipment is complicated, causes substantial amounts of
Energy dissipation.
In recent years, there is patent report to be directly entered gas-based shaft kiln production sponge iron using cold bound pellet, can greatly contract
Short processes flow, reduces energy dissipation.However, because there is low intensity, easily crushing and influenceing gas base to erect in cold bound pellet itself
The deficiency of stove bed permeability, and the commercial practice that sponge iron is produced in gas-based shaft kiln using cold bound pellet rarely has report
Road, therefore prepare sponge iron using cold bound pellet in gas-based shaft kiln and still need more practice and exploring.
The compression strength that different temperatures band and the cold bound pellet of position can bear in gas-based shaft kiln is different.It is existing
Gas-based shaft kiln is that pelletizing bears pressure and the frictional force brought from body and surrounding pelletizing in vertical heater, stove, and shaft furnace is higher,
The pressure in vertical range and frictional force that pelletizing is born in stove are bigger.
Utility model content
The problem of sponge iron is present is prepared for above-mentioned gas-based shaft kiln, cold bound pellet is used the utility model proposes one kind
Prepare the gas-based shaft kiln and its method of sponge iron.Technique stream had both been enormously simplify using gas-based shaft kiln of the present utility model and method
Journey, while having saved comprehensive energy consumption, improves the production efficiency of sponge iron.
According to one side of the present utility model, the gas base that a kind of cold bound pellet of the utility model offer prepares sponge iron is erected
Stove, the gas-based shaft kiln includes：
Feeding bin, it is located at the topmost of gas-based shaft kiln and with cavity, and feeding bin, which includes being located at the top of it, freezes off knot
Pelletizing entrance and top gas outlet, the wherein bottom wall of feeding bin are convex taper, the bottom wall edge of feeding bin and side wall it
Between be provided with multiple middle batch can feeding mouths；
Multiple hollow middle batch cans, each middle batch can is connected by middle batch can feeding mouth with feeding bin, middle material
The bottom wall of tank is inclined-plane, and inclined-plane edge is gradually reduced towards the direction of the vertical center line of gas-based shaft kiln；
Storehouse is reduced, its roof is connected with the side wall of each middle batch can, and reduction storehouse has cavity and roof is convex
Taper, reduce storehouse roof and its side wall between be provided with multiple reduction storehouses feeding mouth, reduction storehouse feeding mouth connection in the middle of batch can and
Storehouse is reduced, reduction storehouse also includes once also Primordial Qi entrance, secondary reduction gas entrance and the outlet of secondary reduction gas, wherein, it is secondary
Also Primordial Qi entrance and secondary reduction gas outlet and therebetween provided with circulation booster fan；And
Sponge iron is exported, and it is located at reduction orlop end.
According to one embodiment of the present utility model, wherein top gas outlet is once gone back positioned at the top of feeding bin side wall
Primordial Qi entrance be located at reduction storehouse side wall bottom, secondary reduction gas entrance be located at reduction storehouse side wall bottom and ratio once
The height of also Primordial Qi entrance is lower, and the outlet of secondary reduction gas is located at the middle part of reduction silo roof wall.
According to one embodiment of the present utility model, the quantity of middle batch can is not less than 2.
According to one embodiment of the present utility model, the corner angle of the taper that the bottom wall of feeding bin is formed for 120 °~
170°。
According to one embodiment of the present utility model, the inclined-plane of bottom wall formation and the angle of horizontal plane of middle batch can are 5 °
~30 °.
According to one embodiment of the present utility model, the corner angle of the taper of reduction silo roof wall formation is not more than 180 °.
According to another aspect of the present utility model, the utility model also provides a kind of use gas-based shaft kiln and prepares sponge iron
Method, this method comprises the following steps：
1) prepare cold bound pellet and cold bound pellet is added to the feeding bin of gas-based shaft kiln by cold bound pellet entrance
It is interior；
2) in feeding bin using first gas from bottom to top to step 1) in the cold bound pellet that adds be dried；
3) by step 2) in dried cold bound pellet be transported to through middle batch can feeding mouth in middle batch can, utilize from
Second gas on down is preheated in middle batch can to cold bound pellet, the cold bound pellet after being preheated and first
Gas；
4) by step 3) in preheat after cold bound pellet through reduce storehouse feeding mouth be transported to reduction storehouse in, cold bound pellet
With being reduced through the secondary reduction gas once gone back Primordial Qi and be passed through through secondary reduction gas entrance that once also Primordial Qi entrance is passed through
Reaction, generation sponge iron and second gas；
5) make step 4) in obtained sponge iron export through reducing the sponge iron at orlop end and discharge.
According to one embodiment of the present utility model, step 4) also include making the sponge iron of generation continue to fall and once
Occurs further reduction reaction with secondary reduction gas also between Primordial Qi entrance and secondary reduction gas entrance.
According to one embodiment of the present utility model, step 1) in the moisture of prepared cold bound pellet be not more than
10%, and the mode of cold bound pellet is prepared including disk pelletizing, to one kind or several in roll-in ball or compacting balling-up mode
Kind.
According to one embodiment of the present utility model, step 4) in once also Primordial Qi temperature be 850 DEG C~950 DEG C.
Cold bound pellet of the present utility model prepare the gas-based shaft kiln and its method of sponge iron by the drying of cold bound pellet,
Preheating and reduction process are concentrated on to be completed in gas-based shaft kiln feeding bin, middle batch can and reduction storehouse, enormously simplify technological process,
Save equipment needed for acid pellet or agglomerates preparation process.And feeding bin, middle batch can and reduction three, storehouse device
It is independent toward each other, the pressure in vertical range that reduces that bottom cold bound pellet born and from pelletizing around
Frictional force, reduces pelletizing pulverization rate, also a saving comprehensive energy consumption, improves the degree of metalization and production efficiency of sponge iron.
Brief description of the drawings
Fig. 1 is the schematic diagram for the gas-based shaft kiln that cold bound pellet of the present utility model prepares sponge iron；And
Fig. 2 is the flow signal for the method that use gas-based shaft kiln of the present utility model is prepared sponge iron by cold bound pellet
Figure.
Embodiment
It should be appreciated that shown embodiment of the present utility model is merely illustrative in the exemplary embodiment.Although
Only a small number of embodiments are described in detail in the utility model, but those skilled in the art are readily appreciated that and taken off in not essence
In the case of teaching from the utility model theme, a variety of modifications are feasible.Correspondingly, all such modifications should all be wrapped
Include in the range of the utility model.In the case where not departing from purport of the present utility model, following exemplary can be implemented
Design, operating condition and parameter of example etc. make others and replace, change, change and delete.
The gas-based shaft kiln of sponge iron is prepared referring to Fig. 1 cold bound pellets for describing the utility model embodiment.The gas
Base shaft furnace generally includes feeding bin 100, multiple hollow middle batch cans 200 and reduction storehouse 300.
Feeding bin 100 is located at the topmost of gas-based shaft kiln and with cavity, and feeding bin 100 includes being located at freezing off at the top of it
Balling group's entrance 110 and top gas outlet 130, the wherein bottom wall of feeding bin 100 are convex taper, the bottom of feeding bin 100
Multiple middle batch can feeding mouths 120 are provided between wall edge and its side wall.The drift angle for the taper that the bottom wall of feeding bin 100 is formed
Angle is 120 °~170 °, thereby assists in the extrorse middle batch can of the cold bound pellet fallen on the bottom wall of feeding bin 100 and enters
Material mouth 120 is moved.
Multiple hollow in the vertical directions of middle batch can 200 are totally located at the middle part of gas-based shaft kiln.Batch can in the middle of each
Logical 200 excessively in the middle of batch can feeding mouths 120 connected with feeding bin 100, the bottom wall of middle batch can 200 is inclined-plane, and the inclined-plane is along direction
The direction of the vertical center line of gas-based shaft kiln is gradually reduced, and the angle of the inclined-plane and horizontal plane is 5 °~30 °, preferably 15 °~
25 °, thereby assist in the cold bound pellet for falling on the middle bottom wall of batch can 200 and moved towards storehouse feeding mouth (being detailed below) is reduced
It is dynamic.
The roof for reducing storehouse 300 is connected with the side wall that each middle batch can is located inside gas-based shaft kiln, and reduction storehouse 300 has
Cavity and roof are convex taper, and the corner angle of the taper is not more than 180 °, thus preferably in guiding reduction storehouse 300
Gas through secondary reduction gas outlet enter circulation loop.Multiple reduction storehouses are provided between the roof and its side wall that reduce storehouse 300
Feeding mouth 310, reduction storehouse feeding mouth 310 connects middle batch can 200 and reduction storehouse 300, and reduction storehouse 300 also includes once also Primordial Qi
Entrance 320, secondary reduction gas entrance 330 and secondary reduction gas outlet 340.Wherein, secondary reduction gas entrance 330 and it is secondary also
Primordial Qi outlet 340 is connected and therebetween provided with circulation booster fan 350.Go out in the bottom in reduction storehouse 300 provided with sponge iron
Mouth 360.
According to specific embodiment of the utility model, the quantity of middle batch can 200 is not less than 2.
When preparing sponge iron using gas-based shaft kiln of the present utility model, cold bound pellet is entered by cold bound pellet first
Mouth 110 is added in feeding bin 100.Because the feeding bin 100 of gas-based shaft kiln is connected with multiple middle batch cans 200 below,
Therefore, the higher gas of temperature can be travelled up in feeding bin 100 in middle batch can 200.Gas from bottom to top and addition
Contacted to the cold bound pellet in feeding bin 100 and it is dried.Because the bottom wall of feeding bin 100 is convex cone
Shape, therefore, the cold bound pellet fallen on bottom wall can be moved to feeding bin bottom wall edge, and then by middle batch can feeding mouth
120 enter middle batch can 200.In middle batch can 200, the gas for coming autoreduction storehouse 300 connects with the cold bound pellet fallen
Touch and it is preheated.Inclined plane shape bottom wall of the cold bound pellet along middle batch can 200 after preheating is snapped down to reduction storehouse pan feeding
Mouth 310, and enter reduction storehouse 300 through reducing storehouse feeding mouth 310.In reduction storehouse 300, the cold bound pellet after preheating and one
Reduction reaction is concurrently given birth in secondary also Primordial Qi and the contact of secondary reduction gas, obtains sponge iron, sponge iron is finally through reducing the bottom of storehouse 300
Sponge iron outlet 360 discharge.Wherein, secondary reduction gas is the portion gas in reduction storehouse 300 after a preceding reduction reaction
The gas for exporting 340 discharges from secondary reduction gas and being obtained after circulation booster fan 350 pressurizes.Afterwards by secondary reduction
Gas is passed through the bottom in reduction storehouse 300 by secondary reduction gas entrance 330.
Fig. 2 shows that the flow for the method that sponge iron is prepared by cold bound pellet using gas-based shaft kiln of the present utility model is shown
It is intended to.Illustrate to use the method for the present utility model for preparing sponge iron by cold bound pellet with reference to Fig. 1 and reference picture 2.
In the step s 100, prepare cold bound pellet and cold bound pellet is added to gas by cold bound pellet entrance 110
In the feeding bin 100 of base shaft furnace, the biodiversity content of prepared cold bound pellet is not more than 10%, and can utilize circle
Disk pelletizing, prepared by cold bound pellet to the one or more in roll-in ball or compacting balling-up mode.
In step s 200, what is added during first gas from bottom to top is utilized in feeding bin 100 to step S100 is cold
Agglomerated pellet is dried, and dried top gas is discharged through top gas outlet 130, and top gas temperature is about 100 DEG C~300
℃。
In step S300, dried cold bound pellet in step S200 is transported to through middle batch can feeding mouth 120
In middle batch can 200, cold bound pellet is preheated in middle batch can 200 using second gas from bottom to top, obtained
Cold bound pellet and first gas after preheating, the temperature of the second gas in middle batch can 200 is about 300 DEG C~700 DEG C.
In step S400, the cold bound pellet after being preheated in step S300 is transported to also through reducing storehouse feeding mouth 310
In former storehouse 300, cold bound pellet with through once also Primordial Qi and through secondary reduction gas entrance that once also Primordial Qi entrance 320 is passed through
Reduction reaction, generation sponge iron and second gas occur for the 330 secondary reduction gas being passed through.Wherein, H in Primordial Qi is once gone back2And CO
Cumulative volume percentage be not less than 80%, its temperature is about 850 DEG C~950 DEG C.After reduction sponge iron temperature be 300 DEG C~
600℃。
In step S500, the sponge iron obtained in step S400 is set to export 360 rows through reducing the sponge iron of the bottom of storehouse 300
Go out.
According to specific embodiment of the utility model, when the temperature of second gas is more than 500 DEG C, part second gas warp
Circulate and enter the reduction bottom of storehouse 300 after booster fan 350 pressurizes, and enter in once also Primordial Qi entrance 320 and secondary reduction gas
Reduction section between mouth 330 carries out drastic reduction to the sponge iron after reduction.The temperature of sponge iron after drastic reduction is about 300
DEG C~500 DEG C.The ratio that the volume of the also Primordial Qi circulated accounts for second gas is not less than 30%.Also Primordial Qi is circulated both
The content of toxic gas in the recycling of also Primordial Qi, reduction top gas can be realized, while can also be further to sponge iron
Drastic reduction is carried out, the degree of metalization of generation sponge iron is improved.
Illustrate the method that cold bound pellet of the present utility model prepares sponge iron in conjunction with specific embodiments further below.
Embodiment one
The cold bound pellet of moisture 10% is added in gas-based shaft kiln feeding bin 100 by cold bound pellet entrance 110.
The cold bound pellet of addition is dried using first gas from bottom to top in feeding bin 100, dried top gas
Discharged through top gas outlet 130, top gas temperature is about 100 DEG C.Dried cold bound pellet is through middle batch can feeding mouth 120
It is transported in middle batch can 200, cold bound pellet is carried out in advance in middle batch can 200 using second gas from bottom to top
Heat, the temperature of the second gas is about 300 DEG C, cold bound pellet and first gas after being preheated.By freezing off after preheating
Balling group is transported in reduction storehouse 300 through reducing storehouse feeding mouth 310, and cold bound pellet through once also Primordial Qi entrance 320 with being passed through
Once also Primordial Qi and the secondary reduction gas being passed through through secondary reduction gas entrance 330 occur reduction reaction, generation sponge iron and the
Two gases.Wherein, H in Primordial Qi is once gone back2Percentage with CO cumulative volume is 80%, and its temperature is about 850 DEG C, extra large after reduction
Continuous iron temperature is 300 DEG C.Finally discharge sponge iron outlet 360 of the obtained sponge iron through reducing the bottom of storehouse 300.
The degree of metalization for the sponge iron that above-mentioned technical proposal of the present utility model obtains is used for 83.2%, and traditional handicraft
The degree of metalization of obtained sponge iron is 82.4%.
Embodiment two
The cold bound pellet of moisture 9% is added in gas-based shaft kiln feeding bin 100 by cold bound pellet entrance 110.
The cold bound pellet of addition is dried using first gas from bottom to top in feeding bin 100, dried top gas
Discharged through top gas outlet 130, top gas temperature is about 200 DEG C.Dried cold bound pellet is through middle batch can feeding mouth 120
It is transported in middle batch can 200, cold bound pellet is carried out in advance in middle batch can 200 using second gas from bottom to top
Heat, the temperature of the second gas is about 400 DEG C, cold bound pellet and first gas after being preheated.By freezing off after preheating
Balling group is transported in reduction storehouse 300 through reducing storehouse feeding mouth 310, and cold bound pellet through once also Primordial Qi entrance 320 with being passed through
Once also Primordial Qi and the secondary reduction gas being passed through through secondary reduction gas entrance 330 occur reduction reaction, generation sponge iron and the
Two gases.Wherein, H in Primordial Qi is once gone back2Percentage with CO cumulative volume is 85%, and its temperature is about 900 DEG C, extra large after reduction
Continuous iron temperature is 400 DEG C.Finally discharge sponge iron outlet 360 of the obtained sponge iron through reducing the bottom of storehouse 300.
The degree of metalization for the sponge iron that above-mentioned technical proposal of the present utility model obtains is used for 85.9%, and traditional handicraft
The degree of metalization of obtained sponge iron is 84.1%.
Embodiment three
The cold bound pellet of moisture 8% is added in gas-based shaft kiln feeding bin 100 by cold bound pellet entrance 110.
The cold bound pellet of addition is dried using first gas from bottom to top in feeding bin 100, dried top gas
Discharged through top gas outlet 130, top gas temperature is about 300 DEG C.Dried cold bound pellet is through middle batch can feeding mouth 120
It is transported in middle batch can 200, cold bound pellet is carried out in advance in middle batch can 200 using second gas from bottom to top
Heat, the temperature of the second gas is about 700 DEG C, cold bound pellet and first gas after being preheated.By freezing off after preheating
Balling group is transported in reduction storehouse 300 through reducing storehouse feeding mouth 310, and cold bound pellet through once also Primordial Qi entrance 320 with being passed through
Once also Primordial Qi and the secondary reduction gas being passed through through secondary reduction gas entrance 330 occur reduction reaction, generation sponge iron and the
Two gases.Wherein, H in Primordial Qi is once gone back2Percentage with CO cumulative volume is 88%, and its temperature is about 950 DEG C.Make the second gas
Secondary reduction gas outlet 340 of 30% gas of body volume through reducing the roof of storehouse 300 is discharged, afterwards by circulating booster fan
350 pressurizations, the bottom for reducing storehouse 300 is entered through secondary reduction gas entrance 330.The sponge iron of whereabouts is once going back Primordial Qi entrance
Occur further reduction reaction with secondary reduction gas between 320 and secondary reduction gas entrance 330, carry out drastic reduction.Depth
The temperature of sponge iron after reduction is about 500 DEG C.Obtained sponge iron is finally set to be exported through reducing the sponge iron of the bottom of storehouse 300
360 discharges.
The degree of metalization for the sponge iron that above-mentioned technical proposal of the present utility model obtains is used for 89.5%, and traditional handicraft
The degree of metalization of obtained sponge iron is 87.3%.
Preferred embodiment of the present utility model is the foregoing is only, not for limiting practical range of the present utility model；
If not departing from spirit and scope of the present utility model, the utility model is modified or equivalent substitution, all should covered
Among the utility model scope of the claims.
Claims (6)
1. a kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron, it is characterised in that the gas-based shaft kiln includes：
Feeding bin, it is located at the topmost of gas-based shaft kiln and with cavity, and feeding bin includes being located at the cold bound pellet at the top of it
Entrance and top gas outlet, the wherein bottom wall of feeding bin is convex taper, is set between the bottom wall edge and side wall of feeding bin
There are multiple middle batch can feeding mouths；
Multiple hollow middle batch cans, each middle batch can is connected by middle batch can feeding mouth with feeding bin, middle batch can
Bottom wall is inclined-plane, and the inclined-plane edge is gradually reduced towards the direction of the vertical center line of gas-based shaft kiln；
Storehouse is reduced, its roof is connected with the side wall of each middle batch can, and reduction storehouse has cavity and roof is convex taper,
Batch can and reduction in the middle of multiple reduction storehouses feeding mouth, reduction storehouse feeding mouth connection are provided between the roof and its side wall that reduce storehouse
Storehouse, reduction storehouse also includes once also Primordial Qi entrance, secondary reduction gas entrance and the outlet of secondary reduction gas, wherein, secondary reduction
Gas entrance and secondary reduction gas outlet and therebetween provided with circulation booster fan；And
Sponge iron is exported, and it is located at reduction orlop end.
2. the gas-based shaft kiln according to claim 1 for preparing sponge iron, it is characterised in that wherein：
The top gas outlet is positioned at the top of feeding bin side wall；
It is described that once also Primordial Qi entrance is located at the bottom of the side wall in reduction storehouse；
The secondary reduction gas entrance is located at the bottom of the side wall in reduction storehouse and once goes back the height of Primordial Qi entrance more than described in
It is low；And
The secondary reduction gas outlet is located at the middle part of the reduction silo roof wall.
3. the gas-based shaft kiln according to claim 1 for preparing sponge iron, it is characterised in that the quantity of the middle batch can is not
Less than 2.
4. the gas-based shaft kiln according to claim 1 for preparing sponge iron, it is characterised in that the bottom wall institute shape of the feeding bin
Into taper corner angle be 120 °~170 °.
5. the gas-based shaft kiln according to claim 1 for preparing sponge iron, it is characterised in that the bottom wall shape of the middle batch can
Into inclined-plane and the angle of horizontal plane be 5 °~30 °.
6. the gas-based shaft kiln according to claim 1 for preparing sponge iron, it is characterised in that the reduction silo roof wall formation
The corner angle of taper is not more than 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621378159.8U CN206385190U (en) | 2016-12-15 | 2016-12-15 | A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621378159.8U CN206385190U (en) | 2016-12-15 | 2016-12-15 | A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206385190U true CN206385190U (en) | 2017-08-08 |
Family
ID=59489553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621378159.8U Expired - Fee Related CN206385190U (en) | 2016-12-15 | 2016-12-15 | A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206385190U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521071A (en) * | 2016-12-15 | 2017-03-22 | 江苏省冶金设计院有限公司 | Gas-based vertical furnace and method for preparing sponge iron by means of cold consolidated pellets |
-
2016
- 2016-12-15 CN CN201621378159.8U patent/CN206385190U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521071A (en) * | 2016-12-15 | 2017-03-22 | 江苏省冶金设计院有限公司 | Gas-based vertical furnace and method for preparing sponge iron by means of cold consolidated pellets |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104313227B (en) | Utilize the method and system carrying out carbon thermal reduction containing fusant waste heat | |
| CN102010987A (en) | Vanadium and titanium pellet ore production process | |
| CN104293998A (en) | Method and system of preparing spongy iron by using gas-based shaft furnace | |
| CN106521071A (en) | Gas-based vertical furnace and method for preparing sponge iron by means of cold consolidated pellets | |
| CN104087701A (en) | Method and system for preparing sponge iron by using gas-based shaft furnace | |
| CN104087700A (en) | Method and system for preparing sponge iron by using gas-based shaft furnace | |
| CN206385190U (en) | A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron | |
| CN206385189U (en) | A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron | |
| JP4801732B2 (en) | How to preheat iron agglomerates | |
| JP3732136B2 (en) | Method for producing reduced iron and cooling apparatus for reduced iron | |
| CN106676219A (en) | Gas-based shaft kiln for preparing sponge iron through cold-bonded pellets and method of gas-based shaft kiln | |
| CN108998659A (en) | With the process of water chestnut brown ocher and v-ti magnetite miberal powder processing pellet | |
| CN206385188U (en) | A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron | |
| CN102268533A (en) | Horizontally movable-fixed bed type magnetic reduction roasting process | |
| CN206467263U (en) | A kind of cold bound pellet prepares the gas-based shaft kiln of sponge iron | |
| CN105525091B (en) | A kind of method of roasting of speculum iron at high proportion | |
| CN106834582A (en) | Hot charging gas-based shaft kiln system and method | |
| CN103088182A (en) | Cooling method of a direct reduction vertical furnace | |
| JP5549227B2 (en) | Method for producing pre-reduced sintered ore and blast furnace operating method using the same | |
| CN103602771B (en) | Local slope type reduction ironmaking furnace and process | |
| CN104087702A (en) | Method and system for preparing sponge iron by using gas-based shaft furnace | |
| EP1718775B1 (en) | Pre-treatment process for feed material for direct reduction process | |
| CN204058507U (en) | Gas-based shaft kiln prepares the system of sponge iron | |
| CN103145182B (en) | Circulating air bed device for modification of titanium concentrate | |
| CN208545474U (en) | A kind of bottom reduction apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20170808 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20170808 |
|
| 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: 20170808 Termination date: 20181215 |