CN102994695A - Moistureproof LF bottom-blown dusting device - Google Patents
Moistureproof LF bottom-blown dusting device Download PDFInfo
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- CN102994695A CN102994695A CN2012105326287A CN201210532628A CN102994695A CN 102994695 A CN102994695 A CN 102994695A CN 2012105326287 A CN2012105326287 A CN 2012105326287A CN 201210532628 A CN201210532628 A CN 201210532628A CN 102994695 A CN102994695 A CN 102994695A
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- dusting
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- spraying pot
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Abstract
The invention provides a moistureproof LF bottom-blown dusting device to meet the requirements of external refining. The device comprises an argon gas tube, a flow control valve, a flow indicator, a dusting pot, a rotary feeder, a drive motor and a power switch. The dusting pot is closed; an upper cover of the dusting pot is provided with a moistureproof seal ring; and the rotary feeder is arranged in the dusting pot and driven by the drive motor. The invention can effectively prevent moisture of powder, prevent blockage of the argon tube, ensure non-caking of the powder and can adjust the amount of powder injection. Using this device, slag quantity of LF can be reduced by more than 22%, thereby reducing the usage amount of a slagging agent. The device has advantages of simple structure, convenient operation, safety, reliability and low manufacturing cost, and can ensure quality of a refining product.
Description
Technical field
The present invention relates to the LF bottom blowing powder injection device of the bottom blowing powder injection device, particularly a kind of protection against the tide of metallurgical engineering external refining.
Background technology
LF is one of important refining unit of external refining, and LF is smelting pipe line steel, and the low-sulfur steel grade has equipment and Technology advantage.In smelting process, the LF rhythm of production is fast, treatment cycle is short, the output high.LF heats up with physical principle, will guarantee when the production flow line steel: strong mixing, high basicity slag, the easy desulfurization of high temperature.
The argon bottom-blowing device of LF is one of visual plant of LF, and its Main Function is that Argon stirs, and plays even composition and temperature, promotes the vital role of slag inclusion thing floating.Load the bottom blowing powder injection device on LF Bottom Argon Stirring equipment, to reducing combustion intensity, vital effect is played in dark desulfurization.
Chinese patent open (bulletin) number: CN102560009A, name is called " a kind of RH vacuum refinement bottom blowing powder injection device ", disclosed content shows: the distance at bottom blowing powder injection member and ladle bottom center is 0-0.9 times of ladle bottom radius, and the element that dusts runs through ladle bottom.This device strengthens mixing effect and improves steel quality by with vacuum refinement, Circulating Flow of Molten Steel and bottom blowing powder injection refining combination.But this device does not have to consider that the pulvis add is easily moist, do not consider to dust yet evenly.
Chinese patent open (bulletin) number: CN102296146A, name is called " a kind of metal slit-type ladle bottom blowing powder injection apparatus ", this device is comprised of dust element and air receiver two parts of metal slit formula, metal slit is welded together, firmly not yielding, resistance to air loss good, winding-up is stable, powder tolerance adjustable extent is large, long service life.But do not prevent equally the regulatory function of the design of pulvis humidity and the agent add-on of dusting.
Summary of the invention
The invention provides a kind of LF bottom blowing powder injection device of protection against the tide, satisfy the external refining requirement.
The LF bottom blowing powder injection device of a kind of protection against the tide provided by the invention comprises: tunger tube, flow control valve, flow indicator, powder spraying pot, rotation feeder, drive-motor and power switch, wherein powder spraying pot is closed, the upper cover of powder spraying pot adds the moisture sealed circle, rotate feeder in powder spraying pot, driven by drive-motor.
The present invention compares with existing same device, and its significant beneficial effect is embodied in:
Moistureproof LF bottom blowing powder injection device adopts sealed design, can prevent effectively that pulvis is moist; Add the rotation feeder and make the pulvis discharging even in powder spraying pot, prevent from stopping up the argon pipe, and guarantee that pulvis does not lump; Control argon flow amount with flow control valve and flow indicator, can regulate the amount of dusting.Use this device, can reduce the quantity of slag of LF more than 22%, thereby reduce the slag former consumption.
Moistureproof LF bottom blowing powder injection apparatus structure is simple, easy to operate, safe and reliable, low cost of manufacture, can guarantee the refined product quality simultaneously.
Description of drawings
Fig. 1 is moistureproof LF bottom blowing powder injection apparatus structure schematic diagram.
Fig. 2 is moistureproof LF bottom blowing powder injection device powder spraying pot sealing-ring enlarged diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, a kind of LF bottom blowing powder injection device of protection against the tide is comprised of tunger tube 6, flow control valve 1, flow indicator 2, powder spraying pot 5, rotation feeder 4 and drive-motor 3 and power switch 8, wherein powder spraying pot is closed, the upper cover of powder spraying pot adds moisture sealed circle 7, rotate feeder 4 in powder spraying pot, drive 3 by drive-motor.
Claims (1)
1. the LF bottom blowing powder injection device of a protection against the tide, it is characterized in that this device comprises: tunger tube, flow control valve, flow indicator, powder spraying pot, rotation feeder, drive-motor and power switch, wherein powder spraying pot is closed, the upper cover of powder spraying pot adds the moisture sealed circle, rotate feeder in powder spraying pot, driven by drive-motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105326287A CN102994695A (en) | 2012-12-12 | 2012-12-12 | Moistureproof LF bottom-blown dusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105326287A CN102994695A (en) | 2012-12-12 | 2012-12-12 | Moistureproof LF bottom-blown dusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102994695A true CN102994695A (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105326287A Pending CN102994695A (en) | 2012-12-12 | 2012-12-12 | Moistureproof LF bottom-blown dusting device |
Country Status (1)
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| CN (1) | CN102994695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796171A (en) * | 2018-08-26 | 2018-11-13 | 崔国辉 | A kind of pre-deoxidation device and its application method being blown carbon dust in converter taphole |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294200A (en) * | 1999-11-02 | 2001-05-09 | 北京科技大学 | Technology for pretreating molten iron inshallow smelting bath by blowing Mg-base desulfurizing agent |
| CN1789437A (en) * | 2005-12-13 | 2006-06-21 | 东北大学 | Slit type ladle bottom blowing powder injection process and apparatus |
| CN1962886A (en) * | 2006-11-23 | 2007-05-16 | 中冶华天工程技术有限公司 | Alloying fine adjustment method |
| CN1986840A (en) * | 2006-11-24 | 2007-06-27 | 周建安 | Molten steel desulfurizing process of bottom blowing superfine magnesium powder |
| CN101509052A (en) * | 2009-03-27 | 2009-08-19 | 东北大学 | Deoxidization, acieration and alloying bottom blowing powder-spraying method for LF furnace |
-
2012
- 2012-12-12 CN CN2012105326287A patent/CN102994695A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294200A (en) * | 1999-11-02 | 2001-05-09 | 北京科技大学 | Technology for pretreating molten iron inshallow smelting bath by blowing Mg-base desulfurizing agent |
| CN1789437A (en) * | 2005-12-13 | 2006-06-21 | 东北大学 | Slit type ladle bottom blowing powder injection process and apparatus |
| CN1962886A (en) * | 2006-11-23 | 2007-05-16 | 中冶华天工程技术有限公司 | Alloying fine adjustment method |
| CN1986840A (en) * | 2006-11-24 | 2007-06-27 | 周建安 | Molten steel desulfurizing process of bottom blowing superfine magnesium powder |
| CN101509052A (en) * | 2009-03-27 | 2009-08-19 | 东北大学 | Deoxidization, acieration and alloying bottom blowing powder-spraying method for LF furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796171A (en) * | 2018-08-26 | 2018-11-13 | 崔国辉 | A kind of pre-deoxidation device and its application method being blown carbon dust in converter taphole |
| CN108796171B (en) * | 2018-08-26 | 2019-11-15 | 福州思琪科技有限公司 | A kind of pre-deoxidation device and its application method being blown carbon dust in converter taphole |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |