CN202576473U - Supersonic flat oxygen lance for electric furnace - Google Patents
Supersonic flat oxygen lance for electric furnace Download PDFInfo
- Publication number
- CN202576473U CN202576473U CN2012201481005U CN201220148100U CN202576473U CN 202576473 U CN202576473 U CN 202576473U CN 2012201481005 U CN2012201481005 U CN 2012201481005U CN 201220148100 U CN201220148100 U CN 201220148100U CN 202576473 U CN202576473 U CN 202576473U
- Authority
- CN
- China
- Prior art keywords
- electric furnace
- oxygen lance
- lance
- flat
- supersonic speed
- 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.)
- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model relates to a supersonic flat oxygen lance for an electric furnace. The lance comprises a lance head, an outer tube, a middle tube, an inner tube, a positioning block, a water inlet and outlet pipe and an end plate; and the lance head of the lance is a single flat or oval spray orifice. According to the utility model, molten steel splashing in the spraying and oxygen blowing process can be reduced to the greatest extent; the tangential branch energy is generated; the circulation stirring of slag and molten steel mixed solution is improved; the duration of heat is greatly shortened; the iron and steel smelting and decarburization efficiency is improved; and the service life of a spray nozzle is also further prolonged.
Description
Technical field
The utility model relates to the accessory in a kind of smelting iron and steel, relates in particular to a kind of electric furnace with supersonic speed flat-section oxygen lance.
Background technology
The common single circular hole oxygen lance of converter current steel-making usefulness, in course of injection, the lower surface environment of shower nozzle is abominable, and envrionment temperature is high; And since iron and steel in carbon rejection process, fusant produces and to splash, and makes the lower surface be prone to produce and corrodes; Use shower nozzle lower surface, back to be damaged, influence flow angle, the precision of spray orifice, the smelting of iron and steel, decarburization time are affected; It is bad to change the slag effect, and the work-ing life of oxygen lance is very of short duration, and the time of smelting also can prolong.This not only causes the waste of Energy resources for steel-making enterprise, can cause the decline of quality product more.And adopt the flat-section spray orifice, and with the fusant liquid level at an angle, can well reduce splashing of fusant.
The utility model content
The utility model provides a kind of and has reduced the molten steel splash, taken off that carbide slag is effective in order to overcome the above problems, the electric furnace of long service life is with supersonic speed flat-section oxygen lance.
The technical scheme of the utility model is: described spray gun comprises rifle head, outer tube, middle pipe, interior pipe, preset pieces, water inlet pipe and water outlet pipe and end plate, and the rifle head of said spray gun is single flat-section or oval spray orifice.
Described spray orifice expansion angle is 0 °～10 °.
Described rifle head is arranged in the height apart from 800～1000mm of molten steel liquid level, and spray gun axis and liquid level to be little angle be 30 °～50 ° angles.
Described rifle end surface cladding thickness is a 1.5-2mm pyrolic alloy layer.
The utility model can at utmost reduce the molten steel sputter in spraying the oxygen blast process; Produce the tangential and divide energy, improve the circulation of slag and molten steel mixing solutions and stir, shorten the heat greatly; Improve smelting iron and steel, decarburization efficient, the work-ing life of also further improving shower nozzle.
The utility model rifle head is designed to single flat-section or oval spray orifice; And the spray orifice expansion angle is designed to 0 °～10 °; The Lavalle curve that keeps original spray gun aditus laryngis; Purpose is to provide the splash of molten steel in a kind of minimizing steelmaking process that can be very big, reduces gun head corrosion and destructiveness, has increased the work-ing life of oxygen lance greatly.
The utility model can cover one deck pyrolic alloy layer in the head body lower surface, and the thickness of pyrolic alloy layer is 1.5-2mm, utilizes the HS and the corrosion resistance of pyrolic alloy, makes the head body lower surface receive excellent protection.
Through overtesting, the shower nozzle of the utility model is compared with traditional sprinkler heads and is improved 2-3 doubly (about 1800-2500 heat) its work-ing life, can be and steelworks year reduces devices consume 50%.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of former oxygen lance.
1 is the rifle head among the figure, the 2nd, and outer tube, the 3rd, middle pipe, the 4th, interior pipe, the 5th, preset pieces, the 6th, rising pipe, the 7th, end plate (), the 8th, water inlet pipe, the 9th, end plate (two), the 10th, pyrolic alloy layer, the 11st, oxygen inlet.
Embodiment
Electric furnace is with supersonic speed flat-section oxygen lance; Described spray gun comprises rifle head, outer tube, middle pipe, interior pipe, preset pieces, water inlet pipe and water outlet pipe and end plate; The rifle head of said spray gun is single flat-section or oval spray orifice, and described spray orifice expansion angle is 0 °～10 °, and described rifle head is arranged in the 800～1000mm height apart from the molten steel liquid level; And it is 30 °～50 ° angles that spray gun axis and liquid level are little angle, and described rifle head 1 end face cladding thickness is a 1.5-2mm pyrolic alloy layer 10.
The utility model is installed through preset pieces 5, and oxygen gets into from oxygen inlet 11, arrives rifle heads 1 through interior pipe 5, and compresses and expansion reaches supersonic speed.Water manages 3 from water inlet pipe 8 gets into, through the water flow passage entering outer tube 2 of rifle head 1, discharge from rising pipe 6 at last.
Claims (4)
1. electric furnace is characterized in that with supersonic speed flat-section oxygen lance: described spray gun comprises rifle head, outer tube, middle pipe, interior pipe, preset pieces, water inlet pipe and water outlet pipe and end plate, and the rifle head of said spray gun is single flat-section or oval spray orifice.
2. electric furnace according to claim 1 is characterized in that with supersonic speed flat-section oxygen lance: described spray orifice expansion angle is 0 °～10 °.
3. electric furnace according to claim 1 is characterized in that with supersonic speed flat-section oxygen lance: described rifle head is arranged in the height apart from 800～1000mm of molten steel liquid level, and spray gun axis and liquid level to be little angle be 30 °～50 ° angles.
4. electric furnace according to claim 1 is characterized in that with supersonic speed flat-section oxygen lance: described rifle end surface cladding thickness is a 1.5-2mm pyrolic alloy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201481005U CN202576473U (en) | 2012-04-10 | 2012-04-10 | Supersonic flat oxygen lance for electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201481005U CN202576473U (en) | 2012-04-10 | 2012-04-10 | Supersonic flat oxygen lance for electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202576473U true CN202576473U (en) | 2012-12-05 |
Family
ID=47245903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201481005U Expired - Lifetime CN202576473U (en) | 2012-04-10 | 2012-04-10 | Supersonic flat oxygen lance for electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202576473U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361466A (en) * | 2012-04-10 | 2013-10-23 | 江苏博际喷雾系统有限公司 | Supersonic-speed flat oxygen lance for electric furnace |
| CN103882244A (en) * | 2014-04-09 | 2014-06-25 | 岑溪市东正动力科技开发有限公司 | Oxygen-enriched blowing device and blowing method |
-
2012
- 2012-04-10 CN CN2012201481005U patent/CN202576473U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361466A (en) * | 2012-04-10 | 2013-10-23 | 江苏博际喷雾系统有限公司 | Supersonic-speed flat oxygen lance for electric furnace |
| CN103882244A (en) * | 2014-04-09 | 2014-06-25 | 岑溪市东正动力科技开发有限公司 | Oxygen-enriched blowing device and blowing method |
| CN103882244B (en) * | 2014-04-09 | 2015-09-02 | 重庆广播电视大学 | Oxygen-enriched air converting devices and methods therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 225267 388 dung North Road, three dung Industrial Park, Fairfax Town, Jiangdu District, Yangzhou, Jiangsu Patentee after: Jiangsu Boji Spraying Systems Holding Co., Ltd. Address before: 225600 No. 388 Shuangxian North Road, Jiangdu District, Yangzhou City, Jiangsu Province Patentee before: Boji Spray System Co., Ltd., Jiangsu Prov. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
|
| CX01 | Expiry of patent term |