CN109136469A - A kind of powder spraying stirring desulfurizer - Google Patents
A kind of powder spraying stirring desulfurizer Download PDFInfo
- Publication number
- CN109136469A CN109136469A CN201811242299.6A CN201811242299A CN109136469A CN 109136469 A CN109136469 A CN 109136469A CN 201811242299 A CN201811242299 A CN 201811242299A CN 109136469 A CN109136469 A CN 109136469A
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- CN
- China
- Prior art keywords
- pulvis
- stirring
- agitating shaft
- stirring blade
- powder spraying
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention relates to a kind of powder spraying stirring desulfurizers, it includes flange connector, agitating shaft and stirring blade, the fixed flange connector in the upper end of the agitating shaft, the lower end of the agitating shaft is fixedly connected with the stirring blade, the center of the flange connector is equipped with pulvis entrance, central part in the center of agitating shaft to stirring blade is equipped with the pulvis channel being connected to pulvis entrance, the lower part of the stirring blade is equipped with to be exported with the pulvis of the connection in pulvis channel, and pulvis is exported to be arranged in parallel with the mixing direction of stirring blade.When the device can guarantee immersion blowing desulfurization pulvis, molten bath obtains mixing well stirring, dispersing and increase the residence time using blowing powder for agitating device, the dynamic conditions of very big reinforcing desulfuration process, apparatus of the present invention cost of manufacture is cheap, can obtain ideal desulfurization effect.
Description
Technical field
The present invention relates to a kind of powder spraying stirring desulfurizers, belong to iron and steel metallurgical industry desulfurizer technical field.
Background technique
Sulphur is one of main harmful element in steel products (except sulfur bearing steel China and foreign countries), and molten iron is as the main of smelting molten steel
Raw material, ingredient affect the quality of steel to a certain extent.With the continuous improvement that market requires steel product quality, to steel
High intensity, low-temperature flexibility, the requirement of cold-formed property and welding performance it is more and more harsh.This to meet market is wanted
It asks, the steel and iron industry of countries in the world is all hardy improving the quality of steel by reducing the sulphur in steel.
Currently, Desulphurization of Pig Iron mainly uses mechanical mixing method and powder injection process, mechanical mixing method is faced with desulfurization effect
Rate is low, the serious problem of temperature drop, and the requirement to molten iron temperature is relatively high, in addition, stirring-head needs to be replaced frequently；And powder injection process
Dynamic conditions is insufficient, easily returns sulphur, sorbent utilization is low.Such as in molten iron refining process, the utilization of steel mill of country magnesium at present
How rate improves the utilization rate of desulfurizing agent magnesium powder generally in 16%-18% or so, avoid back sulphur be domestic steel mill there is an urgent need for
The technical issues of solution.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problem of the prior art, the present invention provides a kind of powder spraying stirring desulfurizer, can effectively improve
Desulfuration efficiency, it is of less demanding to molten iron temperature, and the generation of anti-non-return sulphur.
(2) technical solution
In order to achieve the above object, the main technical schemes that the present invention uses include:
A kind of powder spraying stirring desulfurizer, including flange connector, agitating shaft and stirring blade, the upper end of the agitating shaft
The fixed flange connector, the lower end of the agitating shaft is fixedly connected with the stirring blade, the center of the flange connector
Equipped with pulvis entrance, the central part in the center of agitating shaft to stirring blade is equipped with the pulvis channel being connected to pulvis entrance,
The lower part of the stirring blade is equipped with to be exported with the pulvis of the connection in pulvis channel, the mixing direction of pulvis outlet and stirring blade
It is arranged in parallel, flange connector connects motor rotation axis, and the machine shaft is equipped with channel, is connected to pulvis channel.
Device as described above, it is preferable that the pulvis outlet is uniformly distributed in circumferencial direction equipped with multiple.
Device as described above, it is preferable that the pulvis outlet is set as 2~12, is distributed uniformly and circumferentially setting.
Desulfurizer as described above, it is preferable that the stirring blade is equipped with 2~12, and all stirring blades are along stirring
Axis is uniformly distributed in circumferencial direction.
Desulfurizer as described above, it is preferable that the stirring blade and agitating shaft are in 45 °~90 ° settings.
Device as described above, it is preferable that the stirring blade is rectangular or waveform.
Device as described above, it is preferable that the agitating shaft and stirring blade are equipped with refractory material layer.
Device as described above, it is preferable that the flange connector, agitating shaft and stirring blade are integrally formed setting, or
It is arranged using being threadedly coupled.
(3) beneficial effect
The beneficial effects of the present invention are:
Apparatus of the present invention can guarantee immersion blowing desulfurization pulvis when, molten bath obtain agitating device mix well stirring,
Disperse and increase residence time, the dynamic conditions of very big reinforcing desulfuration process using blowing powder, apparatus of the present invention are fabricated to
This is cheap, substantially increases the utilization rate of desulfurizing agent, can obtain ideal desulfurization effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of powder spraying stirring desulfurizer of the present invention；
Fig. 2 is the cross-sectional view of powder spraying stirring desulfurizer of the present invention.
[description of symbols]
1: flange connector；
2: agitating shaft；
3: pulvis entrance；
4: stirring blade；
5: refractory material layer；
6: pulvis outlet；
7: pulvis channel.
Specific embodiment
In order to preferably explain the present invention, in order to understand, with reference to the accompanying drawing, by specific embodiment, to this hair
It is bright to be described in detail.
Embodiment 1
A kind of powder spraying stirring desulfurizer, as shown in Figure 1, being fixedly connected including flange connector 1, with flange connector 1
Agitating shaft 2 and stirring blade 4, the lower end of agitating shaft is fixedly connected with stirring blade, and the center of flange connector enters equipped with pulvis
Mouth 3 is equipped with pulvis channel 7 in the center of agitating shaft and the central part of stirring blade, is equipped with pulvis in the lower end of stirring blade
Outlet 6, pulvis is exported to be arranged in parallel with the mixing direction of stirring blade, and pulvis outlet is one with pulvis channel and pulvis entrance
Connection, pulvis enters through pulvis channel 7 from pulvis entrance 3, sprays from pulvis outlet 6, pulvis outlet is equal in circumferencial direction
It is even be distributed with it is multiple.Being uniformly distributed can be such that pulvis uniformly sprays, and the utilization rate of pulvis is made to be greatly improved.
Motor and agitating shaft are attached by flange connector, are driven by a motor agitating shaft rotation, are revolved stirring blade
Turn, generates stirring action.Machine shaft has channel simultaneously, and the channel and stirring axis channel, that is, pulvis channel phase are together with stirring
While axis rotates, pulvis is sprayed by the shaft channel of motor.Stirring blade is typically provided 2~12, all stirring blades
It is uniformly distributed along agitating shaft in circumferencial direction.Further, stirring blade and agitating shaft are in 45 °~90 ° settings.
The shape of blade can be set as rectangular or undaform.
In order to extend the service life of device, refractory material layer is equipped on agitating shaft and stirring blade.
As shown in Fig. 2, flange connector, agitating shaft and stirring blade in the present apparatus, can be wholely set, in casting and forming
Shi Yiti casting, and pulvis channel 7, the end in pulvis channel 7 are equipped in the center of flange connector, agitating shaft and stirring blade
Closing, and offer pulvis spout in the direction blade along stirring blade, pulvis spout are equipped with multiple, are along the circumferential direction uniformly
Distribution setting.
Threaded connection setting also can be used in flange connector, agitating shaft and stirring blade, is equipped with internal and external threads in junction,
It is attached, is conveniently replaceable by screw thread.
Powder spraying stirring desulfurizer of the invention is to send the basis of system in existing feeding system, jacking system and molten iron Sheng
On, the advantages of designing powder spraying stirring desulfurizer, merge mechanical mixing method and blowing process, improves desulfuration efficiency and improve pulvis
Utilization rate, the present invention is equipped with 2~12 in circumferencial direction equally distributed pulvis outlet 6 in the bottom of the stirring blade 4；
It is pulvis channel between the pulvis outlet 6 and pulvis entrance 3, will dusts with stirring design in one.
Pulvis utilization rate and pulvis floating interval of floating dock are closely related, and pulvis floating interval of floating dock is related to the floating path of pulvis,
Powder spraying stirring desulfurizer of the invention, the agitation energy generated enable molten iron to flow downward, and in stirring blade end
The desulfurizing agent that the spray outlet of setting sprays, the molten iron to be flowed downward drives the depths for entering molten iron, so that pulvis is in iron
Floating interval of floating dock in water increases.Therefore mechanical stirring is carried out while dusting, the utilization rate of pulvis can be made greatly to be mentioned
Height, and deep desulfuration can be realized within the shorter processing time according to steel grade, and due to the turning effort of stirring, so that molten iron
In sulphur can sufficiently be acted on desulfurizing agent, avoid back sulphur.
The treatment process of powder spraying stirring desulfurizer of the invention is as follows:
It is blast-melted to transport steelshop with hot-metal ladle transport vehicle.Then hot-metal bottle is placed on desulfurization station and tumbles trolley
Go up and be transported to desulfurizing iron processing position, ladle enters skim and handle station after, topple over certain angle, skim, taken off
Hot-metal bottle is moved to desulfurization process station after preceding slag
Lifting device is opened, at PLC and level two control, powder spraying stirring desulfurizer of the invention drops to distance
Above molten iron level at 2~10cm, i.e., blender and spray gun are dropped at 2~10cm above molten iron water level, is opened
High-pressure air source sprays into inert gas.
Charging switch is opened, makes pulvis under the drive of carrier gas, is entered in iron liquid by pulvis channel.
Motor is opened, is stirred, which is dropped into operating position, and gradually increases motor speed and pulvis penetrating
Speed, until reaching numerical value needed for work, the desulfurizer can oscilaltion during stirring.It lasts 2~6 minutes and completes to take off
Sulphuring treatment.
When desulfurization terminates, progress thermometric sampling carries out secondary desulfuration operation if sulfur content does not reach target value, if reaching
To target value, then the desulfurizer is extracted out from molten steel, and carries out the cleaning of stirring-head.After leaving molten iron, stop motor and
Air blowing is dusted.
Rear slag is taken off, ladle is hung, is made steel to converter hot metal charging.
By the real creation data of Shanghai Meishan Iron& Steel Co., Ltd, entire process cycle 20~40 minutes is complete
It works at desulfurizing iron process, using apparatus of the present invention, the mixture to dust for mixed sweetening agent i.e. magnesium powder and calcium oxide, oxidation
Calcium phase is less expensive to magnesium, for the utilization rate for only considering magnesium, the utilization rate of magnesium powder can be made to reach 22%.
The above described is only a preferred embodiment of the present invention, being not the limitation for doing other forms to the present invention, appoint
What those skilled in the art can use the equivalence enforcement that technology contents disclosed above were changed or be modified as equivalent variations
Example.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to the above embodiments
What simple modification, equivalent variations and remodeling, still falls within the protection scope of technical solution of the present invention.
Claims (9)
1. a kind of powder spraying stirring desulfurizer, which is characterized in that it includes flange connector, agitating shaft and stirring blade, described
The fixed flange connector in the upper end of agitating shaft, the lower end of the agitating shaft is fixedly connected with the stirring blade, the flange
The center of connector is equipped with pulvis entrance, and the central part in the center of agitating shaft to stirring blade is equipped with to be connected to pulvis entrance
Pulvis channel, the lower part of the stirring blade is equipped with and the pulvis of the connection in pulvis channel exports, pulvis outlet and paddle
The mixing direction of piece is arranged in parallel, and flange connector connects motor rotation axis, and the machine shaft is equipped with channel, with pulvis channel
Connection.
2. powder spraying stirring desulfurizer as described in claim 1, which is characterized in that the pulvis outlet is uniform in circumferencial direction
It is distributed with multiple.
3. powder spraying stirring desulfurizer as described in claim 1, which is characterized in that the pulvis outlet is set as 2~12, edge
Circumferencial direction is uniformly distributed setting.
4. powder spraying stirring desulfurizer as described in claim 1, which is characterized in that the stirring blade is equipped with 2~12, institute
There is stirring blade to be uniformly distributed along agitating shaft in circumferencial direction.
5. powder spraying stirring desulfurizer as claimed in claim 4, which is characterized in that the stirring blade is rectangular or wave
Shape.
6. powder spraying stirring desulfurizer as claimed in claim 4, which is characterized in that the stirring blade and agitating shaft are in 45 °
~90 ° of settings.
7. powder spraying stirring desulfurizer as described in claim 1, which is characterized in that the agitating shaft and stirring blade are equipped with
Refractory material layer.
8. powder spraying stirring desulfurizer as described in claim 1, which is characterized in that the flange connector, agitating shaft and stir
It mixes blade and is integrally formed setting.
9. powder spraying stirring desulfurizer as described in claim 1, which is characterized in that the flange connector, agitating shaft and stir
Blade is mixed using threaded connection setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242299.6A CN109136469A (en) | 2018-10-24 | 2018-10-24 | A kind of powder spraying stirring desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242299.6A CN109136469A (en) | 2018-10-24 | 2018-10-24 | A kind of powder spraying stirring desulfurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109136469A true CN109136469A (en) | 2019-01-04 |
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ID=64809608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811242299.6A Pending CN109136469A (en) | 2018-10-24 | 2018-10-24 | A kind of powder spraying stirring desulfurizer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028615A (en) * | 2004-07-20 | 2006-02-02 | Sumitomo Metal Ind Ltd | Method for desulfurizing molten pig iron, and mechanically stirring device |
| CN102994697A (en) * | 2012-12-18 | 2013-03-27 | 营口东邦冶金设备耐材有限公司 | Mechanical stirring device for molten iron desulphurization |
| CN202968593U (en) * | 2012-12-18 | 2013-06-05 | 营口东邦冶金设备耐材有限公司 | S-shaped molten iron desulfurization mixer |
| CN105132609A (en) * | 2015-10-10 | 2015-12-09 | 武汉钢铁(集团)公司 | Rotary blowing desulphurization spray gun applicable to molten iron jars of various dimensions or various desulfurizing agents |
-
2018
- 2018-10-24 CN CN201811242299.6A patent/CN109136469A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028615A (en) * | 2004-07-20 | 2006-02-02 | Sumitomo Metal Ind Ltd | Method for desulfurizing molten pig iron, and mechanically stirring device |
| CN102994697A (en) * | 2012-12-18 | 2013-03-27 | 营口东邦冶金设备耐材有限公司 | Mechanical stirring device for molten iron desulphurization |
| CN202968593U (en) * | 2012-12-18 | 2013-06-05 | 营口东邦冶金设备耐材有限公司 | S-shaped molten iron desulfurization mixer |
| CN105132609A (en) * | 2015-10-10 | 2015-12-09 | 武汉钢铁(集团)公司 | Rotary blowing desulphurization spray gun applicable to molten iron jars of various dimensions or various desulfurizing agents |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |
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| RJ01 | Rejection of invention patent application after publication |