CN105331768A - Method for prolonging service life of water-cooled furnace wall of electric furnace - Google Patents
Method for prolonging service life of water-cooled furnace wall of electric furnace Download PDFInfo
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- CN105331768A CN105331768A CN201510909413.6A CN201510909413A CN105331768A CN 105331768 A CN105331768 A CN 105331768A CN 201510909413 A CN201510909413 A CN 201510909413A CN 105331768 A CN105331768 A CN 105331768A
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- furnace wall
- water
- cooled furnace
- water cooled
- copper
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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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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention relates to a method for prolonging the service life of a water-cooled furnace wall of an electric furnace. The method comprises the following steps: (1), part of water cooling pipes at the front end of an oxygen gun is removed; (2), pipeline arrangement in regions with high oxygen concentration are avoided; (3), the water-cooled furnace wall is made; (4), the water-cooled furnace wall is mounted on the furnace shell of the electric furnace. In the step (3), the water-cooled furnace wall is made according to the following steps: 1), making a welding process for a copper water-cooled furnace wall, and welding the copper water-cooled furnace wall according to technological procedures strictly; 2), pressing and pressurizing according to procedures strictly after welding; and 3), plating a black nickel layer on an inner surface according to procedures strictly. Through the processing, the cooling intensity of the copper water-cooled furnace wall formed by copper pipes is strongly ensured, and the surface oxidation rate of the copper water cooled furnace wall is effectively delayed, therefore, the service life of the copper water cooling furnace wall is effectively prolonged.
Description
Technical field
The present invention relates to special steel field of smelting, be specifically related to a kind of method improving electric furnace water-cooling furnace wall work-ing life in the metallurgical electric arc furnace field of application eccentric bottom tapping.
Background technology
Metallurgical electric arc furnace water cooled furnace wall, special steel field is isolated from the outside.Water cooled furnace wall is formed by copper pipe or steel pipe solid matter.Because EBT electric furnace shell structure limit, when EBT water cooled furnace wall leaks, water will directly leak into burner hearth, thus causes stopping production, direct economic loss about more than 80 ten thousand yuan.
The reason that EBT water cooled furnace wall leaks has multiple, and major cause has:
1, the cooling intensity of water cooled furnace wall is not enough
2, electrosmelting liquid level is high, when reacting violent, has red-hot molten steel to drip and splashes on this water cooled furnace wall.
3, the oxygen rifle be arranged on this water cooled furnace wall causes oxygen enrichment state in this local, water cooled furnace wall, and oxygen accelerates the oxidation of water cooled furnace wall.
Summary of the invention
The object of the present invention is to provide a kind of method improving electric furnace water-cooling furnace wall work-ing life, extend the work-ing life of EBT water cooled furnace wall, prevent electric furnace EBT water cooled furnace wall from leaking, improve the continuity that electric furnace is produced, optimize electric steel smelting index, reduce ton steel cost, strengthen the competitive power of product.
For solving above technical problem, the invention provides a kind of method improving electric furnace water-cooling furnace wall work-ing life, adopting following steps:
(1) oxygen rifle leading section bit position water cooling tube is removed;
(2) pipeline of arranging makes it to avoid the large region of oxygen concentration;
(3) water cooled furnace wall is made;
(4) water cooled furnace wall is installed on electric furnace furnace shell.
Further, step (3) makes water cooled furnace wall to comprise step as follows:
1) formulate the weldprocedure of copper water cooled furnace wall, and strictly carry out the welding of water cooled furnace wall by technological process;
2) strictly suppress by code after welding, pressurize;
3) internal surface is strictly by code black coating nickel dam.
Further, step 3) in comprise the steps:
3-1) electrochemical deoiling;
3-2) clean;
3-3) soak diluted acid;
3-4) clean;
3-5) black coating nickel.
Compared with currently available technology, after processing above, the copper water cooled furnace wall cooling intensity be made up of copper pipe has had strong guarantee, and has effectively delayed the surface oxidation rate of copper water cooled furnace wall, thus effectively extends the work-ing life of copper water cooled furnace wall.
Given up by 120T molten steel, loss per ton 1000 yuan calculating, loses 120,000 yuan; The resistance to material of 155T is given up, and loses about 360,000 yuan; Copper water cooled furnace wall, spare part expense about 400,000 yuan, then often avoid a fast water accident, can retrieve economic losses about 860,000 yuan.The whole year about 3,440,000 yuan.In addition, a large amount of heat energy dissipations can be avoided, energy-saving and cost-reducing; And a large amount of repair times can be saved, effectively can improve the continuity that Electric furnace steel making is produced.
Accompanying drawing explanation
Fig. 1 is former water cooled furnace wall schematic diagram
Fig. 2 is for improving water cooled furnace wall (interior black coating nickel heat-sink shell)
Embodiment
Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in numerous embodiments of the present invention.
In a preferred embodiment, a kind of method employing following steps improving electric furnace water-cooling furnace wall work-ing life:
(1) oxygen rifle leading section bit position water cooling tube is removed;
(2) pipeline of arranging makes it to avoid the large region of oxygen concentration;
(3) make water cooled furnace wall: the weldprocedure formulating copper water cooled furnace wall, and strictly carry out the welding of water cooled furnace wall by technological process; Strictly suppress by code after welding, pressurize; Internal surface is strictly by code black coating nickel dam.
(4) water cooled furnace wall is installed on electric furnace furnace shell.
In a further advantageous embodiment:
1, formulate the weldprocedure of copper water cooled furnace wall in detail, and strictly carry out the welding of water cooled furnace wall by technological process.
2, strictly suppress by code after welding, pressurize.
3, internal surface is strictly by code black coating nickel dam, and this coating siphons away heat from copper pipe, increases the cooling intensity of copper pipe, thus copper pipe surface temperature is lowered.Decrease the probability that copper water cooled furnace wall leaks.
4, oxygen rifle leading section bit position water cooling tube is removed, and pipeline is arranged again, avoids the region that oxygen concentration is large, thus has effectively delayed the oxidation rate of copper water cooled furnace wall.
In a preferred embodiment, 1, improve the design paper of water cooled furnace wall, oxygen rifle leading section bit position water cooling tube is removed, and pipeline is arranged again, avoids the region that oxygen concentration is large, in order to delay the speed of the oxidative attack of copper water cooled furnace wall; 2, the making of water cooled furnace wall is carried out by the drawing of water cooled furnace wall.Making step is as follows: (1) formulates the weldprocedure of copper water cooled furnace wall in detail, and strictly carries out the welding of water cooled furnace wall by technological process; (2) strictly suppress by code after welding, pressurize.(3) internal surface is strictly by code black coating nickel dam, follows electrochemical deoiling → cleaning → leaching diluted acid → cleaning → black coating nickel.3, water cooled furnace wall is installed on electric furnace furnace shell.
Given up by 120T molten steel, loss per ton 1000 yuan calculating, loses 120,000 yuan; The resistance to material of 155T is given up, and loses about 360,000 yuan; Copper water cooled furnace wall, spare part expense about 400,000 yuan, then often avoid a fast water accident, can retrieve economic losses about 860,000 yuan.The whole year about 3,440,000 yuan.In addition, a large amount of heat energy dissipations can be avoided, energy-saving and cost-reducing; And a large amount of repair times can be saved, effectively can improve the continuity that Electric furnace steel making is produced.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technical scheme is carried out; or directly apply to other occasion, all within protection scope of the present invention without improving.
Claims (3)
1. improve the method in electric furnace water-cooling furnace wall work-ing life, it is characterized in that, adopt following steps:
(1) oxygen rifle leading section bit position water cooling tube is removed;
(2) pipeline of arranging makes it to avoid the large region of oxygen concentration;
(3) water cooled furnace wall is made;
(4) water cooled furnace wall is installed on electric furnace furnace shell.
2. the method improving electric furnace water-cooling furnace wall work-ing life as claimed in claim 1, is characterized in that, it is as follows that step (3) making water cooled furnace wall comprises step:
1) formulate the weldprocedure of copper water cooled furnace wall, and strictly carry out the welding of water cooled furnace wall by technological process;
2) strictly suppress by code after welding, pressurize;
3) internal surface is strictly by code black coating nickel dam.
3. the method in the raising electric furnace water-cooling furnace wall work-ing life as described in claim 1 and 2, is characterized in that, step 3) in comprise the steps:
3-1) electrochemical deoiling;
3-2) clean;
3-3) soak diluted acid;
3-4) clean;
3-5) black coating nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909413.6A CN105331768A (en) | 2015-12-08 | 2015-12-08 | Method for prolonging service life of water-cooled furnace wall of electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909413.6A CN105331768A (en) | 2015-12-08 | 2015-12-08 | Method for prolonging service life of water-cooled furnace wall of electric furnace |
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| CN105331768A true CN105331768A (en) | 2016-02-17 |
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| CN201510909413.6A Pending CN105331768A (en) | 2015-12-08 | 2015-12-08 | Method for prolonging service life of water-cooled furnace wall of electric furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689151Y (en) * | 2004-04-06 | 2005-03-30 | 烟台吉森冶金设备有限公司 | Copper cooling device for oxygen gun on wall |
| CN201229113Y (en) * | 2008-06-06 | 2009-04-29 | 宝山钢铁股份有限公司 | Watercooling furnace wall for electric furnace |
| CN101709352A (en) * | 2009-12-10 | 2010-05-19 | 南京钢铁股份有限公司 | Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base |
| CN202576475U (en) * | 2012-05-16 | 2012-12-05 | 中天钢铁集团有限公司 | Energy-saving electric furnace |
| CN102927840A (en) * | 2012-10-19 | 2013-02-13 | 中国科学院广州能源研究所 | Composite heat pipe comprising fin and method for manufacturing same |
-
2015
- 2015-12-08 CN CN201510909413.6A patent/CN105331768A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689151Y (en) * | 2004-04-06 | 2005-03-30 | 烟台吉森冶金设备有限公司 | Copper cooling device for oxygen gun on wall |
| CN201229113Y (en) * | 2008-06-06 | 2009-04-29 | 宝山钢铁股份有限公司 | Watercooling furnace wall for electric furnace |
| CN101709352A (en) * | 2009-12-10 | 2010-05-19 | 南京钢铁股份有限公司 | Method for preventing water leakage of base of coherent oxygen lance of electric furnace and water cooling plate under base |
| CN202576475U (en) * | 2012-05-16 | 2012-12-05 | 中天钢铁集团有限公司 | Energy-saving electric furnace |
| CN102927840A (en) * | 2012-10-19 | 2013-02-13 | 中国科学院广州能源研究所 | Composite heat pipe comprising fin and method for manufacturing same |
Non-Patent Citations (4)
| Title |
|---|
| 丁桢祥 等: "《实用装饰性镀层与涂层》", 31 October 2006, 化学工业出版社 * |
| 刘会林 等: "《电弧炉短流程炼钢设备与技术》", 31 January 2012, 冶金工业出版社 * |
| 曾正明: "《工业炉修理手册》", 28 February 1998, 机械工业出版社 * |
| 陈东 等: "《热泵热水装置》", 31 August 2009, 化学工业出版社 * |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 243003 Department of intellectual property right of Hunan West Road No. 8 technology center, Ma'anshan City, Anhui Province Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 Hunan Anhui West Road, No. 8 technology center, Intellectual Property Department Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160217 |