CN211645300U - Auxiliary blowing and stirring device for melt desulfurization - Google Patents
Auxiliary blowing and stirring device for melt desulfurization Download PDFInfo
- Publication number
- CN211645300U CN211645300U CN201922427978.7U CN201922427978U CN211645300U CN 211645300 U CN211645300 U CN 211645300U CN 201922427978 U CN201922427978 U CN 201922427978U CN 211645300 U CN211645300 U CN 211645300U
- Authority
- CN
- China
- Prior art keywords
- desulfurizer
- stirring
- spray pipe
- molten iron
- fixedly arranged
- 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.)
- Active
Links
Images
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model belongs to the field of metallurgical molten iron desulphurization equipment, in particular to a melt desulphurization auxiliary blowing stirring device, which comprises a molten iron tank (1) and a stirring mechanism (2) positioned in the central area of the molten iron tank (1); a dust collection cover (3) is fixedly arranged at the top of the hot metal ladle (1); the two sides of the stirring mechanism (2) are respectively and longitudinally and symmetrically provided with a central vortex region fire-resistant suppression piece (4); a desulfurizer spray pipe (5) is fixedly arranged in the stirring shaft (202); an outer sleeve (6) is fixedly sleeved outside the desulfurizer spray pipe (5); an auxiliary blowing pipe (7) is transversely and fixedly arranged on the outer wall of the lower area of the outer sleeve (6); a desulfurizer tail nozzle (9) is transversely and fixedly arranged in the stirring blade (201) of the stirring mechanism (2). The utility model discloses desulfurizer adds efficiently in desulfurization process, and environmental protection efficiency is showing, and the desulfurizer utilization ratio is ideal.
Description
Technical Field
The utility model belongs to a metallurgical molten iron desulphurization equipment field especially relates to a stirring apparatus is blown in assistance of fuse-element desulfurization.
Background
The KR stirring method is an external desulfurization technique of molten iron used for industrial production in 1965 of Guangdong-smoke iron manufacture in Nippon Nissan, and the first stirring desulfurization device in China was introduced from Nissan iron as early as 1976 for the second steelmaking of Wu-Steel. The stirring desulphurization process has been widely popularized at home and abroad as a high-efficiency and low-cost desulphurization process. Three typical characteristics exist in the flowing state of molten iron in the KR stirring process: a central forced vortex area, a free vortex area and a weak flow area at the lower part of the hot metal ladle. Wherein the dynamic condition of the desulfurization reaction between the desulfurizer in the free vortex region and the molten iron is optimal. Based on the above factors, suppressing the forced vortex region and reducing the weak flow region can effectively improve the utilization rate of the desulfurizing agent. In addition, the existing KR stirring method has low addition efficiency of the desulfurizer and serious agglomeration condition of the desulfurizer.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming prior art's weak point and provide one kind at desulfurization in-process desulfurizer add efficiently, environmental protection efficiency is showing, desulfurizer utilization ratio ideal, and can reach higher molten iron mechanical stirring desulfurization technical economy index's fuse-element desulfurization and assist and blow agitating unit.
In order to solve the technical problem, the utility model discloses a realize like this:
the melt desulfurization auxiliary blowing stirring device comprises a hot-metal ladle and a stirring mechanism positioned in the central area of the hot-metal ladle; a dust collection cover is fixedly arranged at the top of the hot metal ladle; the two sides of the stirring mechanism are respectively and longitudinally and symmetrically provided with a central vortex area fire-resistant suppression piece; a distance between the central vortex area fire-resistant suppression piece and the inner wall of the molten iron tank is more than or equal to 60 mm and less than or equal to 110 mm; the molten iron liquid level depth of the central vortex area fire-resistant suppression piece inserted into the molten iron tank is 35-55% of the height of the inner cavity of the molten iron tank; a desulfurizer spray pipe is fixedly arranged in the stirring shaft of the stirring mechanism; an outer sleeve is fixedly sleeved outside the desulfurizer spray pipe; the bottom of the outer sleeve is sealed with the outer wall of the desulfurizer spray pipe; an auxiliary blowing pipe is transversely and fixedly arranged on the outer wall of the lower area of the outer sleeve; the auxiliary blowing pipe is communicated with an auxiliary blowing cavity formed by the inner wall of the outer sleeve and the outer wall of the desulfurizer spray pipe; a desulfurizer tail spray pipe is transversely and fixedly arranged in the stirring blade of the stirring mechanism; and the upper port of the desulfurizer tail spray pipe is communicated with the lower port of the desulfurizer spray pipe.
As a preferred scheme, the desulfurizer injected by the desulfurizer spray pipe adopts a lime system desulfurizer with the particle size of 35-360 mu m.
The utility model discloses an adopt the central vortex region fire-resistant suppression piece that the symmetry set up to hot metal bottle stirring flow field production periodic influence, be showing the formation that has suppressed central vortex region, obviously improved hot metal mechanical stirring desulfurization dynamics condition, can eliminate the desulfurizer gathering effectively, improved whole desulfurization efficiency. By blowing a lime-based desulfurizing agent having a particle diameter of 34 to 330 μm from a desulfurizing agent spray gun, scattering during the addition of the blowing agent can be prevented, and the desulfurization reaction interface area can be increased. The auxiliary blowing pipe is used for carrying out auxiliary blowing on the melt, so that the stirring effect of the desulfurizer can be further improved, and the area of a desulfurization reaction interface is increased.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of the present invention is not limited to the following description.
Bottom of window
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a hot-metal ladle; 2. a stirring mechanism; 201. a stirring blade; 202. a stirring shaft; 3. a dust collection cover; 4. a central vortex zone refractory inhibitor; 5. a desulfurizer spray pipe; 6. an outer sleeve; 7. an auxiliary blowing pipe; 8. an auxiliary blowing cavity; 9. a desulfurizer tail spray pipe; 10. an exhaust pipe; 11. a dust collector; 12. molten iron; 13. an inert gas inlet; 14. a desulfurizing agent injection port.
Detailed Description
As shown in the figure, the melt desulfurization auxiliary blowing stirring device comprises a hot metal ladle 1 and a stirring mechanism 2 positioned in the central area of the hot metal ladle 1; a dust collection cover 3 is fixedly arranged at the top of the hot metal ladle 1; the two sides of the stirring mechanism 2 are respectively and longitudinally and symmetrically provided with a central vortex region fire-resistant suppression piece 4; a distance between the central vortex area fire-resistant suppression piece 4 and the inner wall of the molten iron tank 1 is more than or equal to 60 mm and less than or equal to 110 mm; the molten iron liquid level depth of the central vortex region fire-resistant suppression component 4 inserted into the molten iron tank 1 is 35-55% of the height of the inner cavity of the molten iron tank 1; a desulfurizer spray pipe 5 is fixedly arranged in the stirring shaft 202 of the stirring mechanism 2; an outer sleeve 6 is fixedly sleeved outside the desulfurizer spray pipe 5; the bottom of the outer sleeve 6 is sealed with the outer wall of the desulfurizer spray pipe 5; an auxiliary blowing pipe 7 is transversely and fixedly arranged on the outer wall of the lower area of the outer sleeve 6; the auxiliary blowing pipe 7 is communicated with an auxiliary blowing cavity 8 formed by the inner wall of the outer sleeve 6 and the outer wall of the desulfurizer nozzle 5; a desulfurizer tail nozzle 9 is transversely and fixedly arranged in the stirring blade 201 of the stirring mechanism 2; the upper port of the desulfurizer tail spray pipe 9 is communicated with the lower port of the desulfurizer spray pipe 5. The desulfurizer injected by the desulfurizer spray pipe 5 of the utility model adopts lime system desulfurizer with particle size of 34-330 μm.
The utility model discloses central vortex district fire-resistant suppression piece 4 adopts the columnar metallic structure spare that covers refractory material outward, and it can realize accuse and flow the function. Through the model test demonstration, adopt the utility model discloses a device is flowed in 4 accuse of fire-resistant inhibitor in central vortex region can improve the number of sneaking into of experimental particulate matter more than ten times to effectively prove the influence effect to the desulfurizer utilization ratio. The utility model discloses in dust cage 3's side-mounting blast pipe 10 that sets up above hot metal bottle 1, the waste gas and the dust that produce in the desulfurization process are inhaled dust arrester 11. The stirring shaft 202 of the stirring mechanism 2 penetrates through the dust collection cover 3 and can move up and down longitudinally.
The utility model discloses rabbling mechanism possesses the flooding, buries in 1 hot metal 5 of hot metal bottle for rotatory stirring molten iron 12's the stirring vane 201 that covers refractory material, this stirring vane 201 goes up and down along roughly vertical direction through elevating gear, and drives the rotation through rotary device. In addition, the utility model discloses be provided with and be arranged in adding desulfurizer spray tube 5 of lime system desulfurizer to molten iron 12 top-blown in hot metal bottle 1. The sizes of the stirring blade 201 and the molten iron tank 1 are determined according to the target molten iron throughput and the required degree of stirring. According to the utility model discloses a design requirement is 34 ~ 330 mu m's lime system desulfurizer from desulfurizer spray gun 4 jetting particle diameter to can prevent the jetting and add the time scattering, and thereby can prevent the condensation increase desulfurization reaction interfacial area of the desulfurizer of adding, can realize efficient desulfurization stably. The inert gas inlet 13 is communicated with the auxiliary blowing cavity 8, the inert gas introduced from the inert gas inlet 13 is blown into molten iron through the auxiliary blowing cavity 8 and the auxiliary blowing pipe 7, the stirring effect of the desulfurizer can be further improved by carrying out auxiliary blowing on the melt through the auxiliary blowing pipe, and the area of a desulfurization reaction interface is increased. And 14 is a desulfurizer filling opening which is communicated with the port 5 of the desulfurizer spray pipe.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The melt desulfurization auxiliary blowing stirring device is characterized by comprising a hot metal ladle (1) and a stirring mechanism (2) positioned in the central area of the hot metal ladle (1); a dust collection cover (3) is fixedly arranged at the top of the hot metal ladle (1); the two sides of the stirring mechanism (2) are respectively and longitudinally and symmetrically provided with a central vortex region fire-resistant suppression piece (4); a distance between the central vortex region fire-resistant suppression piece (4) and the inner wall of the molten iron tank (1) is more than or equal to 60 mm and less than or equal to 110 mm; the molten iron liquid level depth of the central vortex region fire-resistant restraining element (4) inserted into the molten iron tank (1) is 35-55% of the height of the inner cavity of the molten iron tank (1); a desulfurizer spray pipe (5) is fixedly arranged in the stirring shaft (202) of the stirring mechanism (2); an outer sleeve (6) is fixedly sleeved outside the desulfurizer spray pipe (5); the bottom of the outer sleeve (6) is sealed with the outer wall of the desulfurizer spray pipe (5); an auxiliary blowing pipe (7) is transversely and fixedly arranged on the outer wall of the lower area of the outer sleeve (6); the auxiliary blowing pipe (7) is communicated with an auxiliary blowing cavity (8) formed by the inner wall of the outer sleeve (6) and the outer wall of the desulfurizer nozzle (5); a desulfurizer tail spray pipe (9) is transversely and fixedly arranged in the stirring blade (201) of the stirring mechanism (2); the upper port of the desulfurizer tail spray pipe (9) is communicated with the lower port of the desulfurizer spray pipe (5).
2. The melt desulfurization auxiliary blowing stirring device as set forth in claim 1, characterized in that: the desulfurizer blown by the desulfurizer spray pipe (5) is lime system desulfurizer with particle size of 34-330 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427978.7U CN211645300U (en) | 2019-12-30 | 2019-12-30 | Auxiliary blowing and stirring device for melt desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922427978.7U CN211645300U (en) | 2019-12-30 | 2019-12-30 | Auxiliary blowing and stirring device for melt desulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211645300U true CN211645300U (en) | 2020-10-09 |
Family
ID=72700702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922427978.7U Active CN211645300U (en) | 2019-12-30 | 2019-12-30 | Auxiliary blowing and stirring device for melt desulfurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211645300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215344A (en) * | 2021-04-16 | 2021-08-06 | 首钢集团有限公司 | KR stirring molten iron desulphurization method |
| CN113846203A (en) * | 2021-10-28 | 2021-12-28 | 攀钢集团西昌钢钒有限公司 | Metallurgical mechanical stirring, blowing and desulfurizing stirrer |
-
2019
- 2019-12-30 CN CN201922427978.7U patent/CN211645300U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215344A (en) * | 2021-04-16 | 2021-08-06 | 首钢集团有限公司 | KR stirring molten iron desulphurization method |
| CN113846203A (en) * | 2021-10-28 | 2021-12-28 | 攀钢集团西昌钢钒有限公司 | Metallurgical mechanical stirring, blowing and desulfurizing stirrer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211645300U (en) | Auxiliary blowing and stirring device for melt desulfurization | |
| US20190048430A1 (en) | Clean and rapid smelting method in an electric arc furnace with full scrap steel | |
| KR102280717B1 (en) | Slag removal method and production method of ultra-low steel production process | |
| CN200988859Y (en) | Oxygen bottom blowing melting furnace | |
| BR112012009231B1 (en) | HOT METAL REFINING METHOD USING TOP BOOM | |
| CN211645311U (en) | Fuse-element KR mechanical stirring desulphurization unit | |
| CN201793622U (en) | Side-and-bottom combined blown refined steel ladle | |
| CN102424879A (en) | Double-nozzle outlet rotary desulfurization spray gun | |
| US4417723A (en) | Tuyere for blowing gases into molten metal bath container | |
| EP2889385B1 (en) | Straight barrel type vacuum refining device and method for use the same | |
| CN201147731Y (en) | Spray nozzle for metallurgical slag granulation | |
| CN104060104A (en) | Bottom blowing tin smelting process | |
| CN204661752U (en) | A kind of oxygen-enriched bottom-blowing stove oxygen rifle | |
| CN211645310U (en) | Dynamic free molten iron pretreatment desulfurization spray gun | |
| CN105219909B (en) | Molten iron desulfuring spray gun is directly blown for magnesium desulfurizer | |
| CN205687963U (en) | RH vacuum tank flow-guiding type mass-impregnation pipe and equipment for vacuum refining thereof | |
| CN104711395A (en) | High-performance spray gun for molten iron injection pretreatment | |
| CN114959158A (en) | Efficient desulfurization, desilicication and dephosphorization method for molten iron runner self-rotating flow | |
| CN111235355B (en) | Low-cost pre-melting slag equipment and control method thereof | |
| CN211947112U (en) | Low-cost premelting slag equipment | |
| CN101514381A (en) | Production method for reducing inclusion in pipeline steel | |
| CN211713139U (en) | Liquid steel slag treatment device | |
| CN111270088B (en) | System and method for continuously smelting magnesium by liquid stirring through induction heating | |
| CN204237812U (en) | The pretreatment unit of the desulfurization simultaneously of a kind of molten iron, desiliconization, dephosphorization | |
| CN107723416B (en) | Ladle rotation spray gun dephosphorization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Xuedong Inventor after: Yu Linhui Inventor after: Chen Shucun Inventor before: Chen Xuedong Inventor before: Yu Linhui Inventor before: Chen Shucun |