CN103157785B - Construction method of ladle lining - Google Patents
Construction method of ladle lining Download PDFInfo
- Publication number
- CN103157785B CN103157785B CN201310068276.9A CN201310068276A CN103157785B CN 103157785 B CN103157785 B CN 103157785B CN 201310068276 A CN201310068276 A CN 201310068276A CN 103157785 B CN103157785 B CN 103157785B
- Authority
- CN
- China
- Prior art keywords
- ladle
- millimeters
- warming plate
- wall
- plates
- 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 - Fee Related
Links
- 238000010276 construction Methods 0.000 title abstract description 3
- 238000000034 method Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000004321 preservation Methods 0.000 claims abstract description 8
- 210000002219 extraembryonic membrane Anatomy 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000010792 warming Methods 0.000 claims description 53
- 239000011449 brick Substances 0.000 claims description 26
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical group [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 5
- 229910052596 spinel Inorganic materials 0.000 claims description 5
- 239000011029 spinel Substances 0.000 claims description 5
- 238000009628 steelmaking Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004927 clay Substances 0.000 abstract 2
- 230000017525 heat dissipation Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000002075 main ingredient Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000007666 vacuum forming Methods 0.000 description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention relates to a construction method of a ladle lining. The method comprises the following steps: (1) a ladle wall is cleaned; (2) fire clay is coated on the ladle wall and heat preservation plates, the heat preservation plates are sticked from seams of the bottom of the ladle and the ladle wall and along the ladle wall from bottom to top, gaps between the plates are filled with the fire clay, and the constructed heights of the heat reservation plates are equal to the height of a steel water liquid level; (3) holes are arranged between gap lines between an upper row of heat reservation plates and a lower row of heat dissipation plates and around the ladle wall every 1000-1200 millimeters at intervals, and two neighboring rows of holes are arranged in a mutually staggered mode; (4) after the heat preservation plates are constructed, fetal membranes are installed to tie permanent layer castable; and (5) after the permanent layer is tied and naturally dried, a working layer is constructed and is used in an online-mode after being baked. The method can effectively reduce heat loss of the ladling lining, improve temperature-controlling ability in the steel-making process, and ensure stable processes of production, and can also prolong service life of ladle shells, the ladle lining permanent layer and the working layer, and reduce production cost.
Description
Technical field
The present invention relates to Ferrous Metallurgy fire resisting material field, particularly, the present invention relates to a kind of building method of ladle liner.
Background technology
Concerning process for making, temperature is exactly life, and temperature is not only the basis of steelmaking process, obtains the basis of good slab quality especially.The height that steelmaking system temperature controlled water is flat is related to the quality of the many indexs such as steel technology, alloy material consumption, refractory consumption rate, directly determines the height of steel-making cost.Balanced efficient system temperature controls guarantee production direct motion, improves the quality of products, reduces production cost important in inhibiting.
Along with the development of modern steel-smelting technology, ladle has been no longer a simple liquid metal cask.Due to the appearance of external refining and continuous casting technology, ladle loads the longer and continuous expansion of ladleful of time of molten steel, bring the problem of two aspects: one is that molten steel heat loss is aggravated further thereupon, molten steel temperature drop is accelerated further, easily there is low-temperature steel, in order to carrying out smoothly of ensureing that continuous casting produces, general employing is improved Tapping Temperature of Bof or is compensated by refining temperature raising, certainly will cause extend the duration of heat and a large amount of consumption of the energy and raw material; Two is ladle liner system high heat-fluxes, causes ladle skin temperature too high, and involucrum intensity and creep resistance reduce.Ladle hot loss is the key link that system temperature controls as can be seen here, therefore needs to increase heat-insulation layer on ladle liner, guarantees ladle safe operation.
At present, the ladle liner adopting existing building method to build by laying bricks or stones well can not reduce ladle hot loss, therefore, needs the building method developing a kind of new ladle liner.
Summary of the invention
The object of the invention is to, a kind of building method of ladle liner is provided, the method can improve the temperature control capability of steelmaking process, reduce the heat loss of ladle, ensure administration measure direct motion, improve the life-span of ladle involucrum and liner permanent layer and working lining simultaneously, improve the quality of products, reduce production cost.
For achieving the above object, present invention employs following technical scheme:
A building method for ladle liner, described method comprises the steps:
1) ladle wall is cleared up;
2) uniform application chamotte on ladle wall and warming plate, from the seam crossing of bottom of steel ladle and bag wall, along ladle wall from bottom to top, and the order that upper and lower two pieces of warming plates stagger mutually, sticking heat-preservation plate, gap chamotte between warming plate and warming plate tamps, and building by laying bricks or stones of warming plate is highly concordant with liquid steel level height;
3), on the gap line between upper and lower two row warming plates, ring ladle wall, arrange a hole, and the hole of adjacent rows is in staggered distribution mutually at interval of 1000 ~ 1200 millimeters;
4) warming plate installs fetal membrane knotting permanent layer castable after building by laying bricks or stones;
5) permanent layer is tied a knot after complete natural drying and is built working lining by laying bricks or stones, use of reaching the standard grade after baking.
The length of described warming plate is 500 ~ 700 millimeters, and wide is 300 ~ 400 millimeters, and its radian is consistent with the radian of ladle wall, and the length of preferred warming plate is 700 millimeters, and wide is 400 millimeters.
The thickness of described warming plate is 10 ~ 30 millimeters, and the thickness of preferred warming plate is 20 millimeters.
Described warming plate is hard heat-insulating plate, and it is the cotton with low slag ball content, combines with combined binder, adopts vacuum forming technique, and drying and machined are refined and formed, and its Main Ingredients and Appearance is alundum (Al2O3) and silica.
Described chamotte is magnesia chamotte, also can adopt other chamotte, such as High-Alumina chamotte etc.
Hole in described step 3) to be the length of side the be square hole of 100 ~ 150 millimeters.
Described permanent layer adopts high alumina spinel castable integrated poured.
Described working lining adopts magnesia carbon brick to build by laying bricks or stones.
Hard heat-insulating plate in the present invention has low heat capacity, lower thermal conductivity, good heat insulation effect, excellent chemical stability, excellent heat endurance and compressive resistance, HTHP is efflorescence not easily, the heat-insulation layer of ladle liner can be guaranteed, permanent layer, working lining forms an entirety closely, hard heat-insulating plate has the arc identical with ladle involucrum, the gap between hard heat-insulating plate and ladle involucrum can be reduced, simultaneously owing to adding hole on heat-insulation layer, permanent layer castable can be combined closely with ladle involucrum, avoid the generation of lamination, ladle integral security performance can be guaranteed.
The present invention has following advantage relative to prior art: the invention solves ladle hot in steelmaking process and lose large problem, improve the temperature control capability of steelmaking process, ensure administration measure direct motion, improve the life-span of ladle involucrum and liner permanent layer and working lining simultaneously, improve the quality of products, reduce production cost, and security is high, easy construction.
Detailed description of the invention
With detailed description of the invention, the present invention is further detailed explanation below.
Embodiment 1
A building method for ladle liner, described method comprises the steps: 1) cleaning ladle wall; 2) ladle wall evenly coats chamotte, warming plate smears chamotte, from the seam crossing of bottom of steel ladle and bag wall, along ladle wall from bottom to top, and the order that upper and lower two pieces of warming plates stagger mutually, sticking heat-preservation plate, the gap chamotte between warming plate and warming plate tamps, and building by laying bricks or stones of warming plate is highly concordant with liquid steel level height; 3), on the gap line between upper and lower two row warming plates, ring ladle wall, arrange a hole, and the hole of adjacent rows is in staggered distribution mutually at interval of 1200 millimeters; 4) warming plate installs fetal membrane knotting permanent layer castable after building by laying bricks or stones; 5) permanent layer is tied a knot after complete natural drying and is built working lining by laying bricks or stones, use of reaching the standard grade after baking.
The length of described warming plate is 700 millimeters, and wide is 400 millimeters, and its radian is consistent with the radian of ladle wall.
The thickness of described warming plate is 20 millimeters.
Described warming plate is hard heat-insulating plate, and it is the cotton with low slag ball content, combines with combined binder, adopts vacuum forming technique, and drying and machined are refined and formed, and its Main Ingredients and Appearance is alundum (Al2O3) and silica.
Described chamotte is magnesia chamotte.
Hole in described step 3) to be the length of side the be square hole of 150 millimeters.
Described permanent layer adopts high alumina spinel castable integrated poured.
Described working lining adopts magnesia carbon brick to build by laying bricks or stones.
Embodiment 2
A building method for ladle liner, described method comprises the steps: 1) cleaning ladle wall; 2) ladle wall evenly coats chamotte, warming plate smears chamotte, from the seam crossing of bottom of steel ladle and bag wall, along ladle wall from bottom to top, and the order that upper and lower two pieces of warming plates stagger mutually, sticking heat-preservation plate, the gap chamotte between warming plate and warming plate tamps, and building by laying bricks or stones of warming plate is highly concordant with liquid steel level height; 3), on the gap line between upper and lower two row warming plates, ring ladle wall, arrange a hole, and the hole of adjacent rows is in staggered distribution mutually at interval of 1000 millimeters; 4) warming plate installs fetal membrane knotting permanent layer castable after building by laying bricks or stones; 5) permanent layer is tied a knot after complete natural drying and is built working lining by laying bricks or stones, use of reaching the standard grade after baking.
The length of described warming plate is 500 millimeters, and wide is 300 millimeters, and its radian is consistent with the radian of ladle wall.
The thickness of described warming plate is 10 millimeters.
Described warming plate is hard heat-insulating plate, and it is the cotton with low slag ball content, combines with combined binder, adopts vacuum forming technique, and drying and machined are refined and formed, and its Main Ingredients and Appearance is alundum (Al2O3) and silica.
Described chamotte is magnesia chamotte.
Hole in described step 3) to be the length of side the be square hole of 100 millimeters.
Described permanent layer adopts high alumina spinel castable integrated poured.
Described working lining adopts magnesia carbon brick to build by laying bricks or stones.
Embodiment 3
A building method for ladle liner, described method comprises the steps: 1) cleaning ladle wall; 2) ladle wall evenly coats chamotte, warming plate smears chamotte, from the seam crossing of bottom of steel ladle and bag wall, along ladle wall from bottom to top, and the order that upper and lower two pieces of warming plates stagger mutually, sticking heat-preservation plate, the gap chamotte between warming plate and warming plate tamps, and building by laying bricks or stones of warming plate is highly concordant with liquid steel level height; 3), on the gap line between upper and lower two row warming plates, ring ladle wall, arrange a hole, and the hole of adjacent rows is in staggered distribution mutually at interval of 1100 millimeters; 4) warming plate installs fetal membrane knotting permanent layer castable after building by laying bricks or stones; 5) permanent layer is tied a knot after complete natural drying and is built working lining by laying bricks or stones, use of reaching the standard grade after baking.
The length of described warming plate is 600 millimeters, and wide is 350 millimeters, and its radian is consistent with the radian of ladle wall.
The thickness of described warming plate is 30 millimeters.
Described warming plate is hard heat-insulating plate, and it is the cotton with low slag ball content, combines with combined binder, adopts vacuum forming technique, and drying and machined are refined and formed, and its Main Ingredients and Appearance is alundum (Al2O3) and silica.
Described chamotte is High-Alumina chamotte.
Hole in described step 3) to be the length of side the be square hole of 130 millimeters.
Described permanent layer adopts high alumina spinel castable integrated poured.
Described working lining adopts magnesia carbon brick to build by laying bricks or stones.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to embodiment to invention has been detailed description, will be understood by those skilled in the art that, modify to technical scheme of the present invention or equivalent replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (7)
1. a building method for ladle liner, described method comprises the steps:
1) ladle wall is cleared up;
2) uniform application chamotte on ladle wall and warming plate, from the seam crossing of bottom of steel ladle and bag wall, along ladle wall from bottom to top, and the order that upper and lower two pieces of warming plates stagger mutually, sticking heat-preservation plate, gap chamotte between warming plate and warming plate tamps, and building by laying bricks or stones of warming plate is highly concordant with liquid steel level height;
3), on the gap line between upper and lower two row warming plates, ring ladle wall, arrange a hole, and the hole of adjacent rows is in staggered distribution mutually at interval of 1000 ~ 1200 millimeters;
4) warming plate installs fetal membrane knotting permanent layer castable after building by laying bricks or stones;
5) permanent layer is tied a knot after complete natural drying and is built working lining by laying bricks or stones, use of reaching the standard grade after baking;
The length of described warming plate is 500 ~ 700 millimeters, and wide is 300 ~ 400 millimeters, and thickness is 10 ~ 30 millimeters, and its radian is consistent with the radian of ladle wall;
Described warming plate is hard heat-insulating plate.
2. the building method of ladle liner according to claim 1, is characterized in that, the length of described warming plate is 700 millimeters, and wide is 400 millimeters, and its radian is consistent with the radian of ladle wall.
3. the building method of ladle liner according to claim 1, is characterized in that, the thickness of described warming plate is 20 millimeters.
4. the building method of ladle liner according to claim 1, is characterized in that, described chamotte is magnesia chamotte.
5. the building method of ladle liner according to claim 1, is characterized in that, described step 3) in hole to be the length of side the be square hole of 100 ~ 150 millimeters.
6. the building method of ladle liner according to claim 1, is characterized in that, described permanent layer adopts high alumina spinel castable integrated poured.
7. the building method of ladle liner according to claim 1, is characterized in that, described working lining adopts magnesia carbon brick to build by laying bricks or stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310068276.9A CN103157785B (en) | 2013-03-04 | 2013-03-04 | Construction method of ladle lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310068276.9A CN103157785B (en) | 2013-03-04 | 2013-03-04 | Construction method of ladle lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103157785A CN103157785A (en) | 2013-06-19 |
| CN103157785B true CN103157785B (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310068276.9A Expired - Fee Related CN103157785B (en) | 2013-03-04 | 2013-03-04 | Construction method of ladle lining |
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| Country | Link |
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| CN (1) | CN103157785B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625039B (en) * | 2013-11-12 | 2017-01-18 | 中冶宝钢技术服务有限公司 | Placing method of integrally cast steel ladle core die |
| CN104128596B (en) * | 2014-08-22 | 2016-03-16 | 哈尔滨电机厂有限责任公司 | The ramming process method of middle-size and small-size refining ladle permanent layer |
| CN107999732B (en) * | 2017-11-07 | 2019-10-18 | 河钢股份有限公司承德分公司 | Ultra-low carbon coating tundish builds by laying method |
| CN113149666A (en) * | 2020-09-20 | 2021-07-23 | 海鹰空天材料研究院(苏州)有限责任公司 | Preparation method of insulating layer material and steel ladle using insulating layer material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63299853A (en) * | 1987-05-29 | 1988-12-07 | Nippon Steel Corp | Molten steel ladle lining structure |
| CN1191785A (en) * | 1997-12-11 | 1998-09-02 | 宝山钢铁(集团)公司 | Ladle wall laying method |
| CN2743064Y (en) * | 2004-11-01 | 2005-11-30 | 濮阳濮耐高温材料有限公司 | Steel ladle working layer structure |
| CN101386067A (en) * | 2008-10-28 | 2009-03-18 | 南京钢铁联合有限公司 | Ladle liner and laying technique thereof |
| CN202621906U (en) * | 2012-05-07 | 2012-12-26 | 苏州罗卡节能科技有限公司 | Hot metal ladle |
-
2013
- 2013-03-04 CN CN201310068276.9A patent/CN103157785B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63299853A (en) * | 1987-05-29 | 1988-12-07 | Nippon Steel Corp | Molten steel ladle lining structure |
| CN1191785A (en) * | 1997-12-11 | 1998-09-02 | 宝山钢铁(集团)公司 | Ladle wall laying method |
| CN2743064Y (en) * | 2004-11-01 | 2005-11-30 | 濮阳濮耐高温材料有限公司 | Steel ladle working layer structure |
| CN101386067A (en) * | 2008-10-28 | 2009-03-18 | 南京钢铁联合有限公司 | Ladle liner and laying technique thereof |
| CN202621906U (en) * | 2012-05-07 | 2012-12-26 | 苏州罗卡节能科技有限公司 | Hot metal ladle |
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| Publication number | Publication date |
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| CN103157785A (en) | 2013-06-19 |
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