CN208308897U - A kind of high intensity oxygen coal flash iron-smelting device - Google Patents
A kind of high intensity oxygen coal flash iron-smelting device Download PDFInfo
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- CN208308897U CN208308897U CN201820895657.2U CN201820895657U CN208308897U CN 208308897 U CN208308897 U CN 208308897U CN 201820895657 U CN201820895657 U CN 201820895657U CN 208308897 U CN208308897 U CN 208308897U
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- reaction tower
- oxygen coal
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- molten bath
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Abstract
The utility model relates to a kind of high-intensitive oxygen coal flash iron-smelting device, the lower part including being sequentially communicated from bottom to top smelts molten bath, reaction tower and down-comer；Lower part, which smelts, has multiple upper deoxygenation rifles and multiple lower row's oxygen coal guns on the side wall in molten bath, and the height of upper deoxygenation rifle vertical direction is higher than multiple lower row's oxygen coal guns；The bottom that lower part smelts molten bath is ladle heel layer；Reaction tower is made of top dome-shaped reaction tower and lower part back taper reaction tower, the top of top dome-shaped reaction tower is connected to down-comer, the bottom of top dome-shaped reaction tower is connect with the top of lower part back taper reaction tower, and the bottom of lower part back taper reaction tower is connect with the top that lower part smelts molten bath；There is cooled coal gas entrance on the tube wall of down-comer.The smelting device has equipment simple, connects compact, the big feature of equipment rate of driving, and smelting process has the characteristics that smelting process is short, low energy consumption, pollutant emission is few, is convenient for large-scale promotion application.
Description
Technical field
The utility model belongs to golden apparatus field technical field, is related to a kind of high-intensitive oxygen coal flash iron-smelting device.
Background technique
Traditional blast furnace ironmaking long flow path, blast furnace ironmaking must use sinter, pellet and coke, blast furnace ironmaking stream
The energy consumption and CO of journey (blast furnace, coking, sintering/pelletizing)2Discharge accounts for 70% or more of entire steel process total amount, pollutant emission
Amount accounts for 90% or more total amount.Coke shortage and coke price, which go up, seriously increases the cost of blast furnace ironmaking, sintering, pelletizing and
The high energy consumption and high pollution object emission problem of coking process are the key technology difficulties that blast furnace ironmaking process can not avoid.Therefore,
Steel and iron industry is to get rid of coking coal resource shortage to the yoke of development, the increasing environmental protection requirement of adaptation, reduction steel life
Production capacity consumption improves steel products structure and improves quality and quality, realizes that low-grade iron ore, grandidierite and metallurgical solid are discarded
The comprehensive utilization of object needs to develop new ironmaking technology to solve the above problems.Existing non-blast furnace ironmaking technology and device are still
Blast furnace technology can not so be replaced completely, be primarily present prereduction control difficulty it is big, equipment operation rate is low, coal gas chemical energy and
Physical thermal consumes the problems such as excessively high using insufficient, coal consumption and oxygen.
Summary of the invention
In view of the above problems existing in the prior art, the purpose of the utility model is to provide a kind of high-intensitive oxygen coal flash to refine
Iron device.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of high intensity oxygen coal flash iron-smelting device,
Lower part including being sequentially communicated from bottom to top smelts molten bath, reaction tower and down-comer；
The lower part, which smelts, has multiple upper deoxygenation rifles and multiple lower row's oxygen coal guns on the side wall in molten bath, and upper deoxygenation rifle
The height of vertical direction is higher than lower row's oxygen coal gun；
The reaction tower is made of top dome-shaped reaction tower and lower part back taper reaction tower, the top circular arch shaped reaction
The top of tower is connected to down-comer, and the bottom of top dome-shaped reaction tower is connect with the top of lower part back taper reaction tower, lower part
The bottom of back taper reaction tower is connect with the top that lower part smelts molten bath；
There is cooled coal gas entrance on the tube wall of the down-comer.
As an improvement, the lower part smelts molten bath, reaction tower constitutes cupola well, the length of the cupola well is 3~12 m, width
It is highly 3~8 m for 1~4 m, the radius of top dome-shaped reaction tower is 1.5~6 m.
As an improvement, the upper deoxygenation rifle number is 4~16, the number of lower row's oxygen coal gun is 6~24；
The upper deoxygenation rifle and lower row's oxygen coal gun are arranged in lower part and smelt in the opposite two side walls in molten bath, in two side walls
Upper deoxygenation rifle quantity it is equal, and height it is identical, the quantity of lower row's oxygen coal gun in two side walls is equal, and height it is equal,
The spacing of adjacent upper deoxygenation rifle is equal on same side wall, and the spacing of adjacent lower row's oxygen coal gun is equal on same side wall.
As an improvement, the bottom that the lower part smelts molten bath is ladle heel layer, it is highly 0.5~1.5 m.
As an improvement, the lower part smelts molten bath using self-baking carbon brick as refractory material.
As an improvement, the total height of the reaction tower is 3.5~8 m, width is 3~12 m.
As an improvement, the reaction tower furnace wall is using high-alumina brick as refractory material.
As an improvement, the down-comer is rectangular parallelepiped structure, length is 2~8 m, and width is 1~6 m, highly for 1.5~
6 m。
As an improvement, the cooled coal gas entrance is multiple, and the symmetrically two sides of setting down-comer.
Compared with prior art, the utility model at least has the following beneficial effects:
The smelting device has equipment simple, connects compact, the big feature of equipment rate of driving, and smelting process, which has, smelts
The feature that process is short, low energy consumption, pollutant emission is few is convenient for large-scale promotion application.
Detailed description of the invention
Fig. 1 is the front view of high-intensitive oxygen coal flash iron-smelting device.
Fig. 2 is the side view of high-intensitive oxygen coal flash iron-smelting device.
Appended drawing reference: down-comer 1, cooled coal gas entrance 2, high-alumina brick tube wall 3, top high-alumina brick reaction tower furnace wall 4, top circle
Arch reaction tower 5, lower part high-alumina brick reaction tower furnace wall 6, lower part back taper reaction tower 7, upper deoxygenation rifle 8, lower row's oxygen coal gun 9, under
Portion smelts molten bath 10, self-baking carbon brick furnace wall 11, ladle heel layer 12, cinder notch 13, iron mouth 14, carbon steel furnace shell 15.
Specific embodiment
In the description of the present invention, it should be understood that the orientation of the instructions such as term "top", "bottom" "inner", "outside"
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it should not be understood as limiting the present invention.
A kind of high intensity oxygen coal flash iron-smelting device, the lower part including being sequentially communicated from bottom to top smelt molten bath 10, reaction
Tower and down-comer 1.
The lower part, which smelts, has multiple upper deoxygenation rifles 8 and multiple lower row's oxygen coal guns 9 on the side wall in molten bath 10, and upper row
The height of 8 vertical direction of oxygen rifle is higher than lower row's oxygen coal gun 9.
The lower part smelts molten bath 10, reaction tower constitutes cupola well, when it is implemented, the length of cupola well is 3~12 m, width
It is highly 3~8 m for 1~4 m, the radius of top dome-shaped reaction tower 5 is 1.5~6 m.Top dome-shaped reaction tower 5 is furnace
The dome-shaped furnace roof of cylinder.
As an improvement, 8 numbers of the upper deoxygenation rifle are 4~16, the number of lower row's oxygen coal gun 9 is 6~24；
The upper deoxygenation rifle 8 and lower row's oxygen coal gun 9 are arranged in the opposite two side walls of cupola well, the upper row in two side walls
The quantity of oxygen rifle 8 is equal, and height is identical, and the quantity of lower row's oxygen coal gun 9 in two side walls is equal, and height is equal, same
The spacing of adjacent upper deoxygenation rifle 8 is equal on side wall, and the spacing of adjacent lower row's oxygen coal gun 9 is equal on same side wall.Oxygen coal gun uses
Telescopic integration spray gun, the upper deoxygenation rifle and lower row's oxygen coal gun are symmetrically distributed in the two sides of cupola well, and the upper deoxygenation rifle is used
Heat is provided for clinker in combustion parts coal gas, about 60~75% heat is absorbed by clinker.Burning oxygen concentration used is
85%~95%, the oxidizability of coal gas is 15%~25%.Lower row's oxygen coal gun is used for the stirring of coal dust firing and slag iron, preferably
It realizes slag iron separation, while providing the blowing of heat source and coal dust and oxygen for the reduction melting in molten bath, coal powder blowing amount is
Kg/ tons of iron of 300-500, oxygen concentration are 85%~95%.At 1450 DEG C to 1550 DEG C, slag temperature controls the control of slag fusing point
At 1550 DEG C to 1650 DEG C, molten iron temperature is controlled at 1500~1550 DEG C.
As an improvement, the cupola well uses self-baking carbon brick as refractory material, the bottom of cupola well is ladle heel layer, is highly
0.5~1.5 m.
The reaction tower is made of top dome-shaped reaction tower 5 and lower part back taper reaction tower 7, and the top dome-shaped is anti-
The top of tower 5 is answered to be connected to down-comer 1, the bottom of top dome-shaped reaction tower 5 and the top of lower part back taper reaction tower 7 connect
It connects, the bottom of lower part back taper reaction tower 7 and the top of cupola well connect.
As an improvement, the total height of the reaction tower is 3.5~8 m, width is 3~12 m.The reduction temperature of reaction tower
Range is 1500 DEG C~1800 DEG C, and the position in-furnace temperature closer to molten bath is higher.Reaction tower furnace wall is using high-alumina brick as resistance to
Fiery material.
The reduction temperature range of reaction tower is 1500 DEG C~1800 DEG C, and the position in-furnace temperature closer to molten bath is higher.Instead
Answering tower exit gas temperature is 1500~1600 DEG C, and the CO percentage by volume of exiting flue gas is 40~45%, CO2Volume basis
Number is 40~48%, H2Percentage by volume be 6~10%, N2Volume fraction is 1~2%, H2O volume fraction is 1~3%.
There is cooled coal gas entrance 2 on the tube wall of the down-comer 1.When it is implemented, the down-comer 1 is cuboid knot
Structure, length are 2~8 m, and it is highly 1.5~6 m that width, which is 1~6 m,.The cooled coal gas entrance 2 is multiple, and symmetrical
The two sides of down-comer are set, it is so-called symmetrically to refer to cooled coal gas in the identical height in down-comer two sides for adjusting furnace top gas temperature
The quantity of entrance is equal.
When it is implemented, in high-alumina brick tube wall 3, top high-alumina brick reaction tower furnace wall 4, lower part high-alumina brick reaction tower furnace wall 6
It is additionally provided with the furnace shell as a whole of carbon steel furnace shell 15 outside with self-baking carbon brick furnace wall 11.
The high intensity oxygen coal flash iron-smelting device is capable of handling the low product such as difficult reducing iron ore, grandidierite and metallurgical solid waste
Position iron-containing resource is iron-smelting fuel and reducing agent using mill coal, without sintering, pelletizing and coker.It is reduced from source
Energy consumption and pollutant emission, shorten process flow, reduce production cost.The smelting device has equipment simple,
Compact, the big feature of equipment rate of driving is connected, process is short, low energy consumption, pollutant emission is few, production cost is low with smelting
Feature is convenient for large-scale promotion application.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (9)
1. a kind of high intensity oxygen coal flash iron-smelting device, it is characterised in that: the lower part including being sequentially communicated from bottom to top smelts molten
Pond (10), reaction tower and down-comer (1)；
The lower part, which smelts, has multiple upper deoxygenation rifles (8) and multiple lower row's oxygen coal guns (9) on the side wall of molten bath (10), and on
The height of deoxygenation rifle (8) vertical direction is higher than lower row's oxygen coal gun (9)；
The reaction tower is made of top dome-shaped reaction tower (5) and lower part back taper reaction tower (7), and the top dome-shaped is anti-
The top of tower (5) is answered to be connected to down-comer (1), bottom and the lower part back taper reaction tower (7) of top dome-shaped reaction tower (5)
The bottom of top connection, lower part back taper reaction tower (7) is connect with the top that lower part smelts molten bath (10)；
There are cooled coal gas entrance (2) on the tube wall of the down-comer (1).
2. high intensity oxygen coal flash iron-smelting device as described in claim 1, it is characterised in that: the lower part smelts molten bath (10)
Cupola well is constituted with reaction tower, the length of the cupola well is 3~12 m, and it is highly 3~8 m that width, which is 1~4 m, top dome-shaped
The radius of reaction tower (5) is 1.5~6 m.
3. high intensity oxygen coal flash iron-smelting device as claimed in claim 1 or 2, it is characterised in that: the upper deoxygenation rifle (8) is a
Number is 4~16, and the number of lower row's oxygen coal gun (9) is 6~24；
The upper deoxygenation rifle (8) and the setting of lower row's oxygen coal gun (9) are smelted in molten bath (10) opposite two side walls in lower part, and two
The quantity of upper deoxygenation rifle (8) on side wall is equal, and height is identical, and the quantity of lower row's oxygen coal gun (9) in two side walls is equal,
And height is equal, the spacing of adjacent upper deoxygenation rifle (8) is equal on same side wall, adjacent lower row's oxygen coal gun (9) on same side wall
Spacing is equal.
4. high intensity oxygen coal flash iron-smelting device as claimed in claim 3, it is characterised in that: the lower part smelts molten bath (10)
Bottom be ladle heel layer, be highly 0.5~1.5 m.
5. high intensity oxygen coal flash iron-smelting device as claimed in claim 4, it is characterised in that: the lower part smelts molten bath (10)
Using self-baking carbon brick as refractory material.
6. high intensity oxygen coal flash iron-smelting device as described in claim 1, it is characterised in that: the total height of the reaction tower is
3.5~8 m, width are 3~12 m.
7. high intensity oxygen coal flash iron-smelting device as described in claim 1 or 6, it is characterised in that: adopt the reaction tower furnace wall
Use high-alumina brick as refractory material.
8. high intensity oxygen coal flash iron-smelting device as described in claim 1, it is characterised in that: the down-comer (1) is rectangular
Body structure, length are 2~8 m, and it is highly 1.5~6 m that width, which is 1~6 m,.
9. high intensity oxygen coal flash iron-smelting device as claimed in claim 1 or 8, it is characterised in that: the cooled coal gas entrance (2)
To be multiple, and the two sides of down-comer (1) are symmetrically set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820895657.2U CN208308897U (en) | 2018-06-11 | 2018-06-11 | A kind of high intensity oxygen coal flash iron-smelting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820895657.2U CN208308897U (en) | 2018-06-11 | 2018-06-11 | A kind of high intensity oxygen coal flash iron-smelting device |
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| CN208308897U true CN208308897U (en) | 2019-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113249538A (en) * | 2021-05-19 | 2021-08-13 | 浙江中科闪铁科技有限公司 | Flash iron-making method and device based on improved blast furnace |
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2018
- 2018-06-11 CN CN201820895657.2U patent/CN208308897U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113249538A (en) * | 2021-05-19 | 2021-08-13 | 浙江中科闪铁科技有限公司 | Flash iron-making method and device based on improved blast furnace |
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