CN101709352A - Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base - Google Patents
Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base Download PDFInfo
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- CN101709352A CN101709352A CN200910232222A CN200910232222A CN101709352A CN 101709352 A CN101709352 A CN 101709352A CN 200910232222 A CN200910232222 A CN 200910232222A CN 200910232222 A CN200910232222 A CN 200910232222A CN 101709352 A CN101709352 A CN 101709352A
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- oxygen lance
- cooled plate
- coherent oxygen
- gun platform
- rifle
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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
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Abstract
The invention relates to a water leakage preventing method in the metallurgical field, in particular to a method for preventing water leakage of the base of a coherent oxygen lance of an electric furnace and a water cooling plate under the base. The mounted water cooling plate of the coherent oxygen lance is divided into an upper water cooling plate and a lower water cooling plate; the upper water cooling plate is made of steel, the original radian at the middle part of the upper water cooling plate is straightened to ensure that the base of the coherent oxygen lance bulges about 30 mm to the inner part of the electric furnace, so as to enlarge the distance between the coherent oxygen lance and a lower furnace liner and the distance between the lower water cooling plate and the lower furnace liner; the lower water cooling plate is made of copper; the mounting position of the base of the coherent oxygen lance is raised by 200 mm upwards on the original basis, and both the upper water cooling plate and the lower water cooling plate are changed. The method can basically solve the problem of water leakage of the base of the coherent oxygen lance and the water cooling plate under the base, greatly reduce erosion and depletion to the lower liner of the furnace by the coherent oxygen lance, obviously prolong the electric furnace life, reduce the labor intensity of workers, improve the production rhythm and reduce the production cost.
Description
Technical field
The present invention relates to a kind of water leak-proof method of field of metallurgy, cooled plate water leak-proof method under a kind of specifically electric furnace coherent oxygen lance gun platform and the rifle.
Background technology
Electric furnace steel making is compared with converter steelmaking, and the Electric furnace steel making production cost is higher, and the one, because the main raw material scrap ratio molten iron price height of domestic Electric furnace steel making, the 2nd, because the Electric furnace steel making power consumption is higher.Based on these two major causes, be to reduce the Electric furnace steel making production cost, present domestic electric furnace factory generally promotes popular electric furnace hot metal charge technology, and the electric furnace hot metal charge is than day by day raising.And electric furnace hot metal charge ratio increases substantially, and the original supporting oxygen system oxygen delivery capacity of electric furnace is day by day not enough.In order to solve the not enough difficult problem of electric furnace oxygen delivery capacity, introduced the coherent oxygen lance technology, after coherent oxygen lance was implemented, the electric furnace oxygen delivery capacity increased substantially, and can satisfy the production requirement of the high hot metal ratio of electric furnace substantially.But thereupon produced an other difficult problem: under (1) coherent oxygen lance lining erosion serious, often wear the stove accident, because of localized attack seriously is forced to change stove, cause furnace life to descend significantly; (2) leakage accident often takes place in cooled plate under electric furnace coherent oxygen lance gun platform and the rifle, causes producing long-time heat and stops.
Must reduce the oxygen supply intensity of coherent oxygen lance for the generation that prevents leakage accident, thereby make the advantage of coherent oxygen lance not bring into play fully, cause the production capacity of electric furnace further not promoted, want further to accelerate the electric furnace rhythm of production, reduce production costs, must solve cooled plate seepy question under electric furnace coherent oxygen lance gun platform and the rifle rapidly completely.
Summary of the invention
Technical problem to be solved by this invention is: at the shortcoming of above prior art existence, cooled plate water leak-proof method under a kind of electric furnace coherent oxygen lance gun platform and the rifle is proposed, can solve cooled plate seepy question under electric furnace coherent oxygen lance gun platform and the rifle, solve the serious problem of lining erosion under the coherent oxygen lance rifle, reduce the stove accident of wearing.
The technical scheme that the present invention solves above technical problem is:
Cooled plate water leak-proof method under electric furnace coherent oxygen lance gun platform and the rifle may further comprise the steps:
(1) the installation cooled plate with coherent oxygen lance is divided into two up and down, so that make separately;
(2) the top water cold drawing uses material to be steel, the original radian in the middle part of cooled plate is stretching, make the coherent oxygen lance gun platform in the electric furnace stove, give prominence to 30～40mm, widen coherent oxygen lance and following cooled plate and reach distance to the 30～40mm of horizontal direction between furnace lining down, (distance originally is 0, along with coherent oxygen lance gun platform outstanding 30～40mm in the electric furnace stove, the distance of horizontal direction was also corresponding between furnace lining under coherent oxygen lance and following cooled plate reached has widened 30～40mm);
(3) the bottom cooled plate uses material to be copper, improves its heat-exchange capacity, reduces leakage accident;
(4) coherent oxygen lance gun platform installation site is upwards improved 195～205mm on the original basis, cooled plate is all done corresponding change up and down, to descend cooled plate to be increased to 720mm from original height 520mm, to go up cooled plate and foreshorten to 1575mm from original height 1775mm, guarantee that the total height of cooled plate is 2295mm up and down, to go up about the corresponding raising of cooled plate coherent oxygen lance gun platform open holes 200mm, further to widen the distance of furnace lining under coherent oxygen lance thermal-flame and oxygen jet and the rifle.
Its top is tilted to the body of heater outside, when the molten steel cold drawing is installed its underpart is tilted to furnace body inside, distance will be 40～50mm between making on copper cooled plate top and the molten steel cold drawing lower horizontal direction, guarantees under gun platform and the rifle between the copper cooled plate horizontal direction apart from being 70～80mm.
After cooled plate accurately installs up and down, the coherent oxygen lance gun platform is installed again, when gun platform is installed, elder generation is the gun platform lower position fixedly, under the precondition of fixing gun platform lower position, adjust coherent oxygen lance gun platform angle, promptly determine the rifle position, make fixedly gun platform top of the downward angular setting to 41 of rifle hole and vertical direction～43 °, thereby accurately determine coherent oxygen lance rifle position.
The present invention changes the cooled plate material, improves the cooled plate heat-exchange capacity, improves cooled plate self leak integrity; Improve coherent oxygen lance rifle position, widen under coherent oxygen lance thermal-flame and oxygen jet and the rifle distance of furnace lining horizontal direction under the cooled plate and rifle simultaneously, reduce coherent oxygen lance thermal-flame and oxygen jet erosion loss, reduce the coherent oxygen lance tempering and burn out the cooled plate probability cooled plate and furnace lining.
Advantage of the present invention is: the present invention can solve cooled plate seepy question under coherent oxygen lance gun platform and the rifle substantially, reduce the erosion consumption of coherent oxygen lance significantly to furnace lining under the rifle, significantly improve electric furnace furnace life, alleviated labor strength, improved rhythm of production, reduced production cost, at least can reduce electric furnace heat and stop more than 12 hours the whole year, produce direct economic benefit more than 160,000 yuan, at least can reduce 6 of cooled plate and gun platform leakage accidents the whole year, save equipment cost more than 420,000 yuan, only these two annual direct economic benefits are more than 580,000 yuan.And improve furnace life, it is immeasurable especially to improve economic benefit and social benefit that rhythm of production produced.
Embodiment
Embodiment one
Present embodiment is a cooled plate water leak-proof method under a kind of electric furnace coherent oxygen lance gun platform and the rifle, may further comprise the steps:
The installation cooled plate of coherent oxygen lance is divided into two up and down, so that make separately.
The top water cold drawing uses material to be steel, the original radian in the middle part of cooled plate is stretching, make the coherent oxygen lance gun platform in the electric furnace stove, give prominence to 30mm, widen coherent oxygen lance and following cooled plate and reach the distance of horizontal direction between furnace lining down, distance originally is 0, along with coherent oxygen lance gun platform outstanding 30mm in the electric furnace stove, coherent oxygen lance and following cooled plate reach the also corresponding 30mm that widened of distance of horizontal direction between furnace lining down.
The bottom cooled plate uses material to be copper, improves its exchange capacity, reduces leakage accident.
Its top is tilted to the body of heater outside, when the molten steel cold drawing is installed its underpart is tilted to furnace body inside, distance is 40mm between making on copper cooled plate top and the molten steel cold drawing lower horizontal direction, guarantees under gun platform and the rifle that the horizontal direction distance is 70mm between the copper cooled plate.
195mm is upwards improved in coherent oxygen lance gun platform installation site on the original design basis of foreign side, cooled plate is all done corresponding change up and down, original is that following furnace shell flange is the basis, flange to the vertical range of coherent oxygen lance medullary ray is 751mm, flange of the present invention to the vertical range of coherent oxygen lance medullary ray is 951mm, to descend cooled plate to be increased to 720mm from original height 520mm, to go up cooled plate and foreshorten to 1575mm from original height 1775mm, guarantee that the total height of cooled plate is 2295mm up and down, to go up the corresponding raising of cooled plate coherent oxygen lance gun platform open holes 200mm, further to widen the distance of furnace lining under coherent oxygen lance thermal-flame and oxygen jet and the rifle.
After cooled plate accurately installs up and down by the such scheme handle, the coherent oxygen lance gun platform is installed again, when gun platform is installed, elder generation is the gun platform lower position fixedly, under the precondition of fixing gun platform lower position, adjust coherent oxygen lance gun platform angle, promptly determine the rifle position, make ° fixedly gun platform top of the downward angular setting to 41 of rifle hole and vertical direction, thereby accurately determine coherent oxygen lance rifle position.
Embodiment two
Present embodiment is a cooled plate water leak-proof method under a kind of electric furnace coherent oxygen lance gun platform and the rifle, may further comprise the steps:
The installation cooled plate of coherent oxygen lance is divided into two up and down, so that make separately.
The top water cold drawing uses material to be steel, the original radian in the middle part of cooled plate is stretching, make the coherent oxygen lance gun platform in the electric furnace stove, give prominence to 35mm, widen coherent oxygen lance and following cooled plate and reach the distance of horizontal direction between furnace lining down, distance originally is 0, along with coherent oxygen lance gun platform outstanding 35mm in the electric furnace stove, coherent oxygen lance and following cooled plate reach the also corresponding 35mm that widened of distance of horizontal direction between furnace lining down.
The bottom cooled plate uses material to be copper, improves its exchange capacity, reduces leakage accident.
Its top is tilted to the body of heater outside, when the molten steel cold drawing is installed its underpart is tilted to furnace body inside, distance is 45mm between making on copper cooled plate top and the molten steel cold drawing lower horizontal direction, guarantees under gun platform and the rifle that the horizontal direction distance is 75mm between the copper cooled plate.
200mm is upwards improved in coherent oxygen lance gun platform installation site on the original design basis of foreign side, cooled plate is all done corresponding change up and down, original is that following furnace shell flange is the basis, flange to the vertical range of coherent oxygen lance medullary ray is 751mm, flange of the present invention to the vertical range of coherent oxygen lance medullary ray is 951mm, to descend cooled plate to be increased to 720mm from original height 520mm, to go up cooled plate and foreshorten to 1575mm from original height 1775mm, guarantee that the total height of cooled plate is 2295mm up and down, to go up about the corresponding raising of cooled plate coherent oxygen lance gun platform open holes 200mm, further to widen the distance of furnace lining under coherent oxygen lance thermal-flame and oxygen jet and the rifle.
After cooled plate accurately installs up and down by the such scheme handle, the coherent oxygen lance gun platform is installed again, when gun platform is installed, elder generation is the gun platform lower position fixedly, under the precondition of fixing gun platform lower position, adjust coherent oxygen lance gun platform angle, promptly determine the rifle position, make ° fixedly gun platform top of the downward angular setting to 42 of rifle hole and vertical direction, thereby accurately determine coherent oxygen lance rifle position.
Embodiment three
Present embodiment is a cooled plate water leak-proof method under a kind of electric furnace coherent oxygen lance gun platform and the rifle, may further comprise the steps:
The installation cooled plate of coherent oxygen lance is divided into two up and down, so that make separately.
The top water cold drawing uses material to be steel, the original radian in the middle part of cooled plate is stretching, make the coherent oxygen lance gun platform in the electric furnace stove, give prominence to 40mm, widen coherent oxygen lance and following cooled plate and reach the distance of horizontal direction between furnace lining down, distance originally is 0, along with coherent oxygen lance gun platform outstanding 40mm in the electric furnace stove, coherent oxygen lance and following cooled plate reach the also corresponding 40mm that widened of distance of horizontal direction between furnace lining down.
The bottom cooled plate uses material to be copper, improves its exchange capacity, reduces leakage accident.
Its top is tilted to the body of heater outside, when the molten steel cold drawing is installed its underpart is tilted to furnace body inside, distance is 50mm between making on copper cooled plate top and the molten steel cold drawing lower horizontal direction, guarantees under gun platform and the rifle that the horizontal direction distance is 80mm between the copper cooled plate.
205mm is upwards improved in coherent oxygen lance gun platform installation site on the original design basis of foreign side, cooled plate is all done corresponding change up and down, original is that following furnace shell flange is the basis, flange to the vertical range of coherent oxygen lance medullary ray is 751mm, flange of the present invention to the vertical range of coherent oxygen lance medullary ray is 951mm, to descend cooled plate to be increased to 720mm from original height 520mm, to go up cooled plate and foreshorten to 1575mm from original height 1775mm, guarantee that the total height of cooled plate is 2295mm up and down, to go up about the corresponding raising of cooled plate coherent oxygen lance gun platform open holes 200mm, further to widen the distance of furnace lining under coherent oxygen lance thermal-flame and oxygen jet and the rifle.
After cooled plate accurately installs up and down by the such scheme handle, the coherent oxygen lance gun platform is installed again, when gun platform is installed, elder generation is the gun platform lower position fixedly, under the precondition of fixing gun platform lower position, adjust coherent oxygen lance gun platform angle, promptly determine the rifle position, make ° fixedly gun platform top of the downward angular setting to 43 of rifle hole and vertical direction, thereby accurately determine coherent oxygen lance rifle position.
The present invention can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the scope of protection of present invention.
Claims (3)
1. cooled plate water leak-proof method under electric furnace coherent oxygen lance gun platform and the rifle is characterized in that: may further comprise the steps:
(1) the installation cooled plate with coherent oxygen lance is divided into two up and down, so that make separately;
(2) the top water cold drawing uses material to be steel, and the original radian in the middle part of cooled plate is stretching, makes to widen coherent oxygen lance gun platform outstanding 30～40mm in the electric furnace stove coherent oxygen lance and following cooled plate and reach distance to the 30～40mm of horizontal direction between furnace lining down;
(3) the bottom cooled plate uses material to be copper, improves its heat-exchange capacity, reduces leakage accident;
(4) coherent oxygen lance gun platform installation site is upwards improved 195～205mm on the original basis, cooled plate is all done corresponding change up and down, to descend cooled plate to be increased to 720mm from original height 520mm, to go up cooled plate and foreshorten to 1575mm from original height 1775mm, guarantee that the total height of cooled plate is 2295mm up and down, to go up the corresponding raising of cooled plate coherent oxygen lance gun platform open holes 200mm, further to widen the distance of furnace lining under coherent oxygen lance thermal-flame and oxygen jet and the rifle.
2. cooled plate water leak-proof method under electric furnace coherent oxygen lance gun platform as claimed in claim 1 and the rifle, it is characterized in that: its top is tilted to the body of heater outside, when the molten steel cold drawing is installed its underpart is tilted to furnace body inside, distance is 40～50mm between making on copper cooled plate top and the molten steel cold drawing lower horizontal direction, guarantees under gun platform and the rifle between the copper cooled plate horizontal direction apart from being 70～80mm.
3. cooled plate water leak-proof method under electric furnace coherent oxygen lance gun platform as claimed in claim 1 and the rifle, it is characterized in that: after cooled plate accurately installs up and down, the coherent oxygen lance gun platform is installed again, when gun platform was installed, fixing gun platform lower position earlier was under the precondition of fixing gun platform lower position, adjust coherent oxygen lance gun platform angle, promptly determine the rifle position, make fixedly gun platform top of the downward angular setting to 41 of rifle hole and vertical direction～43 °, thus accurately definite coherent oxygen lance rifle position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102322225A CN101709352B (en) | 2009-12-10 | 2009-12-10 | Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102322225A CN101709352B (en) | 2009-12-10 | 2009-12-10 | Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base |
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| Publication Number | Publication Date |
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| CN101709352A true CN101709352A (en) | 2010-05-19 |
| CN101709352B CN101709352B (en) | 2011-06-22 |
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| CN2009102322225A Expired - Fee Related CN101709352B (en) | 2009-12-10 | 2009-12-10 | Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719606A (en) * | 2012-06-24 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Method for preventing water-cooled furnace wall of electric arc furnace from leaking water |
| CN105331768A (en) * | 2015-12-08 | 2016-02-17 | 马鞍山钢铁股份有限公司 | Method for prolonging service life of water-cooled furnace wall of electric furnace |
| CN109593912A (en) * | 2019-02-02 | 2019-04-09 | 山东钢铁股份有限公司 | A kind of electric furnace oxygen lance arragement construction |
| CN109777912A (en) * | 2019-02-28 | 2019-05-21 | 南京钢铁股份有限公司 | A kind of cluster fluidic oxygen gun and EBT electric arc furnaces |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200999253Y (en) * | 2007-01-22 | 2008-01-02 | 宝山钢铁股份有限公司 | Supersonic water-cooling oxygen gun |
-
2009
- 2009-12-10 CN CN2009102322225A patent/CN101709352B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719606A (en) * | 2012-06-24 | 2012-10-10 | 山西太钢不锈钢股份有限公司 | Method for preventing water-cooled furnace wall of electric arc furnace from leaking water |
| CN105331768A (en) * | 2015-12-08 | 2016-02-17 | 马鞍山钢铁股份有限公司 | Method for prolonging service life of water-cooled furnace wall of electric furnace |
| CN109593912A (en) * | 2019-02-02 | 2019-04-09 | 山东钢铁股份有限公司 | A kind of electric furnace oxygen lance arragement construction |
| CN109593912B (en) * | 2019-02-02 | 2024-06-11 | 山东钢铁股份有限公司 | Electric stove oxygen rifle arrangement structure |
| CN109777912A (en) * | 2019-02-28 | 2019-05-21 | 南京钢铁股份有限公司 | A kind of cluster fluidic oxygen gun and EBT electric arc furnaces |
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| CN101709352B (en) | 2011-06-22 |
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Granted publication date: 20110622 Termination date: 20191210 |
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