CN104338925A - Method for prolonging service life of seating brick for ventilated core of ladle - Google Patents
Method for prolonging service life of seating brick for ventilated core of ladle Download PDFInfo
- Publication number
- CN104338925A CN104338925A CN201410243781.7A CN201410243781A CN104338925A CN 104338925 A CN104338925 A CN 104338925A CN 201410243781 A CN201410243781 A CN 201410243781A CN 104338925 A CN104338925 A CN 104338925A
- Authority
- CN
- China
- Prior art keywords
- brick
- ventilated
- core
- porous core
- ladle
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention provides a method for prolonging the service life of a seating brick for a ventilated core of a ladle. The method is implemented through three steps: (1) before the ventilated core is assembled, baking the inner part of the ladle with an intense fire by using a gas baking device, and when the temperature of the seating brick of the ventilated core reaches 480-650 DEG C, assembling the ventilated core; (2) when the ventilated core is mounted, applying pelitomorphic corundum fireclay with the thickness of 2.5-3.2mm on the surface of a steel casing, and hammering the pelitomorphic corundum fireclay into a mounting hole of the ventilated seating brick which is baked in advance, so as to enable the ventilated core and the ventilated seating brick to form a whole; (3) after the ventilated seating brick is mounted, plugging a mounting opening of the ventilated core by using agglomerate rockwool, then casting a casting layer with the thickness of 18-22mm on the surface of the ventilated seating brick by using corundum self-flowing materials of which the water-material ratio is 4:1, and then placing the ladle under the baking device for baking. Through the adoption of the method disclosed by the invention, the seating brick of the ventilated core is prevented from being directly baked by the intense fire, so that the service life of the ventilated seating brick is prolonged.
Description
Technical field
The present invention relates to the assembling of ladle ventilating core, especially adopt new method, namely both solved the deficiency of baking temperature, improve again the service life of ventilating seat brick.
Background technology
Ladle ventilating core brick is the box hat parcel that a kind of outside 2mm is thick, inner containing gaseous core, pink fused alumina material, the conical objects of air bag is arranged at bottom, it is arranged on ladle bottom, argon gas, by it, can complete and stir the argon gas of molten steel in converter tapping or LF smelting process, realizes the smelting objects such as molten steel uniform temperature, composition and floating are mingled with this.Because porous core effect is crucial, assembling quality requirement is very high, require that porous core brick cup baking temperature reaches the rapid sintering grow of corundum chamotte that more than 500 DEG C can make porous core surface smear, obtain good assembly quality, in early days, because baking time is not enough, it is insecure that ventilating seat brick thermometer degree causes porous core to assemble, ooze steel accident, afterwards by the adjustment ladle baking time, although the temperature of ventilating seat brick reaches requirement, but the adverse effect of high-temperature baking, the porous core brick cup life-span is generally on the low side, for addressing this problem, the novel porous core assembly method of our development, popularity will be obtained in scope of the same trade when reaching its maturity.
The present invention is by stopping that roaster burning things which may cause a fire disaster is to the direct baking of ventilating seat brick, heat radiation channel is set again, make the baking temperature of ventilating seat brick up to standard, after using this technology, solve porous core brick cup temperature on the low side, the problem that porous core assembly quality is poor and the ventilating seat brick life-span is on the low side, for the energy-saving and cost-reducing of enterprise serves exemplary role.
Summary of the invention
The object of the invention is to: new porous core assembly method is provided, had both solved the problem of baking temperature deficiency, the service life of ventilating seat brick can be improved again.
The object of the present invention is achieved like this: a kind of method improving ladle ventilating core print seat brick service life, implements step by step;
Before the assembling of step 1 porous core, adopt gas-fired roaster to carry out big fire baking to ladle inside, when porous core brick cup temperature reaches 480-650 DEG C, can assemble;
When step 2 porous core is installed, at the thick pureed corundum chamotte of its box hat surface smear 2.5-3.2mm, and need hammer in the installing hole of ventilating seat brick baked in advance, make porous core and ventilating seat brick become entirety;
After step 3 ventilating seat brick installs, use agglomerating rock wool shutoff porous core installing port, then the corundum self-flowing material that uses ratio of water to material to be 4:1 is at the thick pouring layer of ventilating seat brick surface casting 18-22mm, then toast under ladle being placed on roaster, avoid the direct baking of big fire to porous core brick cup, improve the service life of ventilating seat brick.
Porous core effect of the present invention is crucial, assembling quality requirement is very high, by stopping that roaster burning things which may cause a fire disaster is to the direct baking of ventilating seat brick, heat radiation channel is set again, make the baking temperature of ventilating seat brick up to standard, improve 10 times service life, in addition, because rock wool has ventilative thermal diffusivity, not only intercept the baking of flame to brick cup inwall, also carry out sufficient heat radiation, make the baking temperature of brick cup all can reach 500 DEG C, the assembly quality of porous core is guaranteed, and greatly improves the security performance of 120t ladle, shows technological progress.
Accompanying drawing explanation
The present invention is described further by reference to the accompanying drawings.
Accompanying drawing 1 is the structural representation of porous core device of the present invention;
As shown in the figure: porous core is a kind of outside box hat, inside pink fused alumina castable is cast and inside is full of gaseous core, and the air-breather of air bag is arranged at bottom.
Accompanying drawing 2 becomes overall schematic for porous core of the present invention and brick cup sintering grow;
As shown in the figure: after the porous core loading ventilating seat brick of surface smear chamotte, chamotte sinters rapidly and porous core and ventilating seat brick are integrated.
Accompanying drawing 3 is use rock wool shutoff porous core installing port of the present invention, covers brick cup schematic surface with corundum self-flowing material;
As shown in the figure: after ventilating seat brick installs, use agglomerating rock wool shutoff porous core installing port, the corundum self-flowing material that then uses ratio of water to material to be 4:1, at the thick pouring layer of ventilating seat brick surface casting 20mm, avoids the direct baking of big fire to brick cup.
Detailed description of the invention
The present invention is described further in conjunction with the embodiments.
Embodiment
Porous core, it is a kind of outside box hat, inside pink fused alumina castable is cast and inside is full of gaseous core, the air-breather of air bag is arranged at bottom, need hammer in the installing hole of ventilating seat brick baked in advance after the thick pureed corundum chamotte of its box hat surface smear 3mm during installation, ventilative chamotte in the event of high temperatures can in porous core and the rapid sintering grow of ventilating seat brick inwall, porous core and ventilating seat brick are combined closely becomes overall, but there is a problem in whole process, and ventilating seat brick is because flame is for a long time to its surperficial direct baking, superficial decarbonization can be caused, reduce the life-span of brick, if baking time is too short, qualified baking temperature cannot be reached, just the assembly quality of porous core cannot be ensured, and then the generation of huge production accident can be caused, in order to address this problem, have employed new ventilating seat brick mounting technique.
Gas-fired roaster to be used to carry out big fire baking to ladle inside before assembling porous core; when porous core brick cup temperature reaches more than 500 DEG C; porous core can be assembled; but due to improper to the baking measure of ventilating seat brick; the phenomenon burst after often causing ventilating seat brick skin decarburization, has a strong impact on the service life of ventilating seat brick.
After ventilating seat brick installs, use agglomerating rock wool shutoff porous core installing port, then the corundum self-flowing material that uses ratio of water to material to be 4:1 is at the thick pouring layer of ventilating seat brick surface casting 20mm, then toast by regulation under ladle being placed on roaster, the castable on final surface avoids the direct baking of big fire to porous core brick cup, the service life of average raising ventilating seat brick 10 times, secondly, because rock wool has ventilative thermal diffusivity, not only intercept the baking of flame to brick cup inwall, also carry out sufficient heat radiation, the overall baking temperature of brick cup is not affected, the assembly quality of porous core is also ensured.
The pureed corundum chamotte that this method is selected and corundum self-flowing material, purchase in Anshan AnLi Co., Ltd.
Claims (2)
1. improve the method in ladle ventilating core print seat brick service life, it is characterized in that: implement step by step;
Before the assembling of step 1 porous core, adopt gas-fired roaster to carry out big fire baking to ladle inside, when porous core brick cup temperature reaches 480-650 DEG C, can assemble;
When step 2 porous core is installed, at the thick pureed corundum chamotte of its box hat surface smear 2.5-3.2mm, and need hammer in the installing hole of ventilating seat brick baked in advance, make porous core and ventilating seat brick become entirety;
After step 3 ventilating seat brick installs, use agglomerating rock wool shutoff porous core installing port, then the corundum self-flowing material that uses ratio of water to material to be 4:1 is at the thick pouring layer of ventilating seat brick surface casting 18-22mm, then toast under ladle being placed on roaster, avoid the direct baking of big fire to porous core brick cup, improve the service life of ventilating seat brick.
2. according to method according to claim 1, it is characterized in that: the pureed corundum chamotte selected and corundum self-flowing material are market purchasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243781.7A CN104338925B (en) | 2014-06-04 | A kind of method improving ladle ventilating core print seat brick service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243781.7A CN104338925B (en) | 2014-06-04 | A kind of method improving ladle ventilating core print seat brick service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104338925A true CN104338925A (en) | 2015-02-11 |
| CN104338925B CN104338925B (en) | 2016-11-30 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115555554A (en) * | 2022-11-04 | 2023-01-03 | 南京钢铁股份有限公司 | Steel ladle bottom seepage-proofing steel pouring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529729A (en) * | 1992-01-23 | 1996-06-25 | Intocast Gmbh Feuerfestprodukte Und Giesshilfsmittel | Process for producing the refractory lining of a casting ladle |
| CN2806494Y (en) * | 2005-06-30 | 2006-08-16 | 宝山钢铁股份有限公司 | Ladle porous brick core changing device |
| CN101117851A (en) * | 2007-06-28 | 2008-02-06 | 武汉钢铁(集团)公司 | Ladle bottom construction method |
| CN102078957A (en) * | 2010-12-24 | 2011-06-01 | 莱芜钢铁股份有限公司 | Continuous casting tundish for improving cleanliness of molten steel |
| CN203437633U (en) * | 2013-09-06 | 2014-02-19 | 济南新峨嵋实业有限公司 | Brick-cup-free steel ladle |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529729A (en) * | 1992-01-23 | 1996-06-25 | Intocast Gmbh Feuerfestprodukte Und Giesshilfsmittel | Process for producing the refractory lining of a casting ladle |
| CN2806494Y (en) * | 2005-06-30 | 2006-08-16 | 宝山钢铁股份有限公司 | Ladle porous brick core changing device |
| CN101117851A (en) * | 2007-06-28 | 2008-02-06 | 武汉钢铁(集团)公司 | Ladle bottom construction method |
| CN102078957A (en) * | 2010-12-24 | 2011-06-01 | 莱芜钢铁股份有限公司 | Continuous casting tundish for improving cleanliness of molten steel |
| CN203437633U (en) * | 2013-09-06 | 2014-02-19 | 济南新峨嵋实业有限公司 | Brick-cup-free steel ladle |
Non-Patent Citations (1)
| Title |
|---|
| 窦满元等: "吹氩透气砖安装工艺的研究与实践", 《包钢科技》, no. 04, 31 December 1996 (1996-12-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115555554A (en) * | 2022-11-04 | 2023-01-03 | 南京钢铁股份有限公司 | Steel ladle bottom seepage-proofing steel pouring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2007008420A3 (en) | Method and apparatus for melting metal | |
| CN102953509A (en) | Vacuum ceramic thermal baffle welded by metal solders and manufacturing method of thermal baffle | |
| KR20090007361A (en) | Heating device for preheating a liquid-metal transfer container | |
| CN104611487A (en) | Furnace top temperature control method for heating-up of blast furnace | |
| CN104338925A (en) | Method for prolonging service life of seating brick for ventilated core of ladle | |
| CN103791721B (en) | Thermal test method of medium-frequency induction furnace | |
| CN104338925B (en) | A kind of method improving ladle ventilating core print seat brick service life | |
| CN202442590U (en) | Crucible type high-temperature salt-bath heat-treatment electric furnace | |
| CN108342534B (en) | A method of avoid blast furnace taphole from burning | |
| CN102052834A (en) | Improvement structure of regenerative fuel gas aluminum melting furnace | |
| US3954388A (en) | Gas burner and furnace | |
| CN103090677A (en) | Energy-saving furnace and energy saving method thereof | |
| CN104819645A (en) | Split-type ventilating brick and installation method thereof | |
| CN204513757U (en) | A kind of full steel structure fuel-firing gas-firing hot-blast stove | |
| CN109341334B (en) | Energy-saving environment-friendly small metal melting furnace | |
| CN204898122U (en) | Polycrystalline silicon ingot furnace | |
| CN102953510B (en) | Convex vacuum ceramic thermal baffle and preparation method thereof | |
| CN103864440A (en) | Silicon carbide brick for dry quenching furnace and preparation method thereof | |
| CN206131707U (en) | Muffle furnace composite furnace thorax | |
| CN203731408U (en) | Metal short-flame burner for oven | |
| CN104746701A (en) | Glass welded metal vacuum composite plate with getter and production method thereof | |
| CN105712745A (en) | Colored ceramic and preparation method thereof | |
| CN203526537U (en) | Ladle bottom brick | |
| CN104019665A (en) | Soaking pit minor-repair dry-off method | |
| CN103913056A (en) | Alloy baking method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |