CN2552939Y - External molten iron desulfurzation jet blower for blast furnace - Google Patents
External molten iron desulfurzation jet blower for blast furnace Download PDFInfo
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- CN2552939Y CN2552939Y CN 02233028 CN02233028U CN2552939Y CN 2552939 Y CN2552939 Y CN 2552939Y CN 02233028 CN02233028 CN 02233028 CN 02233028 U CN02233028 U CN 02233028U CN 2552939 Y CN2552939 Y CN 2552939Y
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- blast furnace
- winding
- blowing
- molten iron
- metal mixer
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model relates to a hot metal pretreatment device field, in particular to be applicable to a desulfurizing and blowing device of hot metal outside the blast furnace, which comprises a metal mixer, a blowing element and a top blasting gun and is characterized in that the blowing element is a multihole straight-way type ventilate firebrick, of which a side face is covered by a steel plate and the bottom is provided with a gas chamber. Inert gases are blowing through the blowing element at bottom and side part of the metal mixer. The blowing element also can be a multihole diffuse type or slit type and the distance between slits are decided as required by the designer. Compared with the prior art, the utility model has the advantages of fast reaction rate of desulfurization, high efficiency, large amount of hot metal treatment, simple structure and low investment.
Description
Technical field
The utility model belongs to the hot metal pretreatment apparatus field, is specially adapted to the outer desulfurizing iron blowing device of State of Blast Furnace.
Background technology
In the prior art, take place frequently in order to improve continuously cast bloom defective and implosion, there are quality problems such as sulfide segregation in the steel billet, sulphur content in the steel should be controlled at below the 0.01-0.002%, thereby can make continuous casting billet quality be improved significantly, so countries in the world are all carried out secondary desulfurization for the molten iron major part of using for continuous casting and are handled.Because the whole process of converter steelmaking is an oxidizing atmosphere, sweetening power is limited.Thereby for a long time desulfurizing iron has been carried out studying most greatly and obtaining developing rapidly.Blast-melted secondary desulfurization technology is to begin the thirties in 20th century to use, the sixties, oxygen top blown converter steel making technology was developed rapidly after emerging, become ripe at present at home and abroad, in actual production, widely apply, the treatment process method is of a great variety, successively about six classes of technology of invention are 16 kinds, industrial production is mainly based on blowing process, but there is weakness in the outer molten iron winding-up of existing State of Blast Furnace separation of flow device, owing to the mode of the irregular of its reaction vessel and winding-up, exist the dead band of winding-up, have influence on the degree of uniformity of molten iron in the metal mixer car, cause sorbent utilization low, consumption is big.
The utility model content
The purpose of this utility model is to provide that a kind of desulphurization reaction speed is fast, efficient is high, handle that iron water amount is big, the outer desulfurizing iron blowing device of the State of Blast Furnace of the simple less investment of equipment.
According to above-mentioned purpose, principle of work of the present utility model is to be that carrier jets desulfurization powder to the molten iron deep with gas with top-blown spray gun, jet rare gas element to stir molten iron and sweetening agent thorough mixing by sidepiece, bottom, increased the stirring kinetic energy in metal mixer car dead band, make good circulation of the inner formation of molten iron, enlarge the reaction interface of sweetening agent and molten iron, promote the abundant reaction of sweetening agent and molten iron, thereby shortened the mixing time of molten iron significantly, accelerated the carrying out of hot metal pretreatment reaction.
According to above-mentioned principle, the technical scheme that we proposed is described further in conjunction with the drawings and the specific embodiments of the concrete structure of the utility model desulfurization blowing device.
Description of drawings and embodiment
Accompanying drawing 1 is the structural representation of the outer desulfurizing iron blowing device of State of Blast Furnace.
Accompanying drawing 2 is the Facad structure synoptic diagram of porous through type winding-up element.
Accompanying drawing 3 is the vertical view of the porous through type winding-up element shown in the accompanying drawing 2.
Accompanying drawing 4 is porous diffuse type winding-up element Facad structure synoptic diagram.
Accompanying drawing 5 is the vertical view of the porous diffuse type winding-up element shown in the accompanying drawing 4.
Accompanying drawing 6 is the winding-up element Facad structure synoptic diagram of slit.
Accompanying drawing 7 is the vertical view of the slit winding-up element shown in the accompanying drawing 6.
In above-mentioned accompanying drawing, 1 is metal mixer car, and 2 are the winding-up element, and 3 is top-blown spray gun, and 4 is air chamber, and direction shown in the arrow is that rare gas element flows to direction in the accompanying drawings.
Among Fig. 1, metal mixer car 1 is a metal shell, winding-up element 2 is the permeable refractory brick of porous through type, its side encases with steel plate, the bottom has air chamber 4, rare gas element is jetted by the winding-up element 2 of metal mixer car 1 bottom, sidepiece respectively, and rare gas element can also be jetted by the winding-up element 2 of metal mixer car 1 bottom and sidepiece simultaneously.
Among Fig. 2 and Fig. 3,2 is the breathable refractory materials winding-up element of porous through type, the 4 bottom air chambers for winding-up element 2.
Among Fig. 4 and Fig. 5,2 is the breathable refractory materials winding-up element of porous diffuse type, the 4 bottom air chambers for winding-up element 2.
Among Fig. 6 and Fig. 7,2 is the breathable refractory materials winding-up element of slit, 4 bottom air chambers for winding-up element 2, and slit distance each other is fixed by planner's requirement.
The utility model compared with prior art because the winding-up element is by side-blown, bottom blowing winding-up inertia Gas fully mixes with the top spray desulfurizing agent to stir molten iron, has increased the stirring kinetic energy in torpedo hot metal mixer car dead band, Make good circulation of the inner formation of molten iron, enlarge the reaction interface of desulfurizing agent and molten iron, promote to take off The abundant reaction of sulphur agent and molten iron, thus the mixing time of molten iron shortened significantly, accelerated molten iron The carrying out of pretreatment reaction.
Claims (4)
1, the outer desulfurizing iron blowing device of a kind of State of Blast Furnace, form by metal mixer car (1), winding-up element (2) top-blown spray gun (3), the element (2) that it is characterized in that jetting is the permeable refractory brick of porous through type, its side encases with steel plate, the bottom has air chamber (4), and rare gas element is jetted by the winding-up element (2) of metal mixer car (1) bottom.
2, the outer desulfurizing iron blowing device of State of Blast Furnace according to claim 1 is characterized in that the winding-up element (2) that rare gas element passes through metal mixer car (1) sidepiece jets.
3,, it is characterized in that the winding-up element (2) that rare gas element passes through metal mixer car (1) sidepiece and bottom jets simultaneously according to the outer desulfurizing iron blowing device of claim 1 and 2 described State of Blast Furnace.
4, the outer desulfurizing iron blowing device of State of Blast Furnace according to claim 1, the element (2) that it is characterized in that jetting can also be porous diffuse type and slit, slit distance each other is fixed by planner's requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233028 CN2552939Y (en) | 2002-04-19 | 2002-04-19 | External molten iron desulfurzation jet blower for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233028 CN2552939Y (en) | 2002-04-19 | 2002-04-19 | External molten iron desulfurzation jet blower for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2552939Y true CN2552939Y (en) | 2003-05-28 |
Family
ID=33708265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02233028 Expired - Fee Related CN2552939Y (en) | 2002-04-19 | 2002-04-19 | External molten iron desulfurzation jet blower for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2552939Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370036C (en) * | 2005-12-13 | 2008-02-20 | 东北大学 | Slit type ladle bottom blowing powder injection process and apparatus |
-
2002
- 2002-04-19 CN CN 02233028 patent/CN2552939Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370036C (en) * | 2005-12-13 | 2008-02-20 | 东北大学 | Slit type ladle bottom blowing powder injection process and apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |