CN112174683A - Repairing material for ladle cover of thermal-state tundish and construction method thereof - Google Patents
Repairing material for ladle cover of thermal-state tundish and construction method thereof Download PDFInfo
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- CN112174683A CN112174683A CN202011116164.2A CN202011116164A CN112174683A CN 112174683 A CN112174683 A CN 112174683A CN 202011116164 A CN202011116164 A CN 202011116164A CN 112174683 A CN112174683 A CN 112174683A
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- tundish
- cover
- tundish cover
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
Abstract
The invention discloses a repairing material for a thermal-state tundish cover and a construction method thereof, wherein the repairing material for the thermal-state tundish cover comprises the following components in percentage by weight: 1mm-3mm of 99 white corundum: 13 percent; 1-0.5 of 99 white corundum: 18 percent; 99 white corundum of 200 meshes: 16.4 percent; 1-0 99 plate corundum: 20 percent; 200 mesh kyanite: 5 percent; guangxi clay: 25 percent; calcium aluminate cement: 1 percent; sodium tripolyphosphate: 0.6 percent; explosion-proof fiber: 1 percent. According to the repairing material for the ladle cover of the hot tundish, rapid repairing can be realized, namely repairing and using are realized, the turnover efficiency of the ladle cover of the tundish is improved, and material waste and environmental pollution caused by large disassembly of the ladle cover can be avoided.
Description
Technical Field
The invention relates to the technical field of continuous casting, in particular to a repairing material for a thermal-state tundish cover and a construction method of the repairing material for the thermal-state tundish cover.
Background
Nowadays, resource saving, safety, environmental protection and energy saving are advocated, and the consumption of various refractory materials and the turnover efficiency of various supporting facilities in the continuous casting process are increasingly paid attention by people. The ladle lid plays thermal-insulated and the safety protection effect that prevents the molten steel and splash in the continuous casting in-process in the middle of the continuous casting, however, the ladle lid is in the use, the refractory material of its inside pouring easily takes place the breakage after using many times and drops, thereby influence the heat preservation and keep apart the effect of thermal radiation on the one hand, on the other hand, the heat preservation drops and can lead to the damage of ladle lid steel construction after serious, need demolish refractory material in order to pour again, and the dismantling of the remaining refractory material of ladle lid needs the manpower, the energy medium, and the refractory material who demolishs can cause environmental pollution.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the repair material for the ladle cover of the thermal-state tundish can realize quick repair, namely repair and use, improve the turnover efficiency of the ladle cover of the tundish, and avoid material waste and environmental pollution caused by large disassembly of the ladle cover.
The invention also provides a construction method of the repair material for the ladle cover of the thermal-state tundish.
According to the repairing material for the ladle cover of the thermal-state tundish, the repairing material comprises the following components in percentage by weight: 1mm-3mm of 99 white corundum: 13 percent; 1-0.5 of 99 white corundum: 18 percent; 99 white corundum of 200 meshes: 16.4 percent; 1-0 99 plate corundum: 20 percent; 200 mesh kyanite: 5 percent; guangxi clay: 25 percent; calcium aluminate cement: 1 percent; sodium tripolyphosphate: 0.6 percent; explosion-proof fiber: 1 percent.
According to the repairing material for the ladle cover of the hot tundish, provided by the embodiment of the invention, quick repairing can be realized, namely repairing and using are realized, the turnover efficiency of the ladle cover of the tundish is improved, and material waste and environmental pollution caused by large disassembly of the ladle cover can be avoided.
In addition, the repair material for the ladle cover of the thermal-state tundish according to the embodiment of the invention has the following additional technical characteristics:
according to some embodiments of the invention, the 99 white corundum comprises the following chemical components in percentage by weight: more than or equal to 99 percent of Al2O3, less than or equal to 0.2 percent of SiO2 and less than or equal to 0.25 percent of Na 2O.
According to some embodiments of the invention, in the 1-0 99 plate corundum, the weight percentage of the 1-120 meshes is greater than or equal to 85%, and the weight percentage of the 120-200 meshes is less than or equal to 15%.
According to some embodiments of the invention, the kyanite comprises the following chemical components in percentage by weight: more than or equal to 60 percent of Al2O3, (K2O + Na2O) is less than or equal to 0.8 percent, and caustic soda is less than or equal to 1.5 percent.
According to the construction method of the mending material for the thermal-state tundish cover, which is disclosed by the embodiment of the second aspect of the invention, the mending material is the mending material for the thermal-state tundish cover, and the method comprises the following steps:
cleaning sundries at the damaged part of the tundish cover to expose the refractory material layer of the tundish cover;
adding 7% of glass water into the patching material and stirring for a period of time;
and putting the stirred mixture into the damaged part of the tundish cover, and trowelling.
According to the construction method of the repairing material for the ladle cover of the thermal-state tundish, provided by the embodiment of the invention, quick repairing can be realized, namely repairing and using are realized, the turnover efficiency of the ladle cover of the tundish is improved, and material waste and environmental pollution caused by large-scale disassembly of the ladle cover can be avoided.
According to some embodiments of the invention, the repair mass is added to 7% glass water and stirred for 5 minutes.
According to some embodiments of the invention, the method is performed with the tundish cover hot after being taken off-line.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a tundish cover according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a broken tundish cover according to an embodiment of the invention;
FIG. 3 is a schematic illustration of a repaired tundish cover according to an embodiment of the invention.
Reference numerals:
the tundish cover 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The repair mass for a hot tundish cover according to an embodiment of the first aspect of the invention will be described with reference to the accompanying drawings.
The repairing material for the ladle cover of the thermal-state tundish, provided by the embodiment of the invention, comprises the following components in percentage by weight: 1mm-3mm of 99 white corundum: 13 percent; 1-0.5 of 99 white corundum: 18 percent; 99 white corundum of 200 mesh (i.e. 0.074 mm): 16.4 percent; 1-0 99 plate corundum: 20 percent; 200 mesh (i.e. 0.074mm) kyanite: 5 percent; guangxi clay: 25 percent; calcium aluminate cement: 1 percent; sodium tripolyphosphate: 0.6 percent; explosion-proof fiber: 1 percent.
The tundish is covered by the tundish and the tundish is off-line, the temperature is high, and the residual materials are more and partially damaged.
Therefore, according to the repairing material for the hot tundish cover, the removal of residual materials of the tundish cover raw material can be reduced, the maximization of resource utilization is realized, the pollution is reduced, the construction is convenient, and the problem of high labor intensity of workers caused by the original material removal and pouring is solved; the newly repaired tundish cover can be quickly turned over, and the manufacturing time of the newly poured tundish cover is shortened.
According to the repairing material for the ladle cover of the hot tundish, provided by the embodiment of the invention, quick repairing can be realized, namely repairing and using are realized, the turnover efficiency of the ladle cover of the tundish is improved, and material waste and environmental pollution caused by large disassembly of the ladle cover can be avoided.
According to some embodiments of the invention, the chemical composition of the 99 white corundum is in weight percent: more than or equal to 99 percent of Al2O3, less than or equal to 0.2 percent of SiO2 and less than or equal to 0.25 percent of Na 2O.
According to some embodiments of the invention, in the 99 plate corundum of 1 to 0, the weight percentage of 1 mesh to 120 mesh (i.e. 0.106mm) is greater than or equal to 85%, and the weight percentage of 120 mesh to 200 mesh (i.e. 0.074mm) is less than or equal to 15%.
According to some embodiments of the invention, the kyanite comprises the following chemical components in percentage by weight: more than or equal to 60 percent of Al2O3, (K2O + Na2O) is less than or equal to 0.8 percent, and caustic soda is less than or equal to 1.5 percent.
According to the construction method of the mending material for the thermal-state tundish cover in the embodiment of the second aspect of the invention, the mending material is the mending material for the thermal-state tundish cover in the embodiment of the first aspect of the invention, and the method comprises the following steps:
cleaning sundries at the damaged part of the tundish cover to expose the refractory material layer of the tundish cover;
adding 7% of glass water into the patching material and stirring for a period of time;
and putting the stirred mixture into a tundish cover to cover the damaged part, and troweling.
According to the construction method of the repairing material for the ladle cover of the thermal-state tundish, provided by the embodiment of the invention, quick repairing can be realized, namely repairing and using are realized, the turnover efficiency of the ladle cover of the tundish is improved, and material waste and environmental pollution caused by large-scale disassembly of the ladle cover can be avoided.
According to one embodiment of the invention, the construction method of the repair material for the ladle cover of the thermal-state tundish comprises the following steps:
cleaning sundries on the damaged part of the tundish cover to expose the refractory material layer for construction;
adding the repairing material into a stirrer, adding 7% of glass water, and stirring for 5 minutes;
and (4) discharging the stirred materials, shoveling the damaged part of the ladle cover of the hot tundish by using a shovel, and troweling the damaged part by using the shovel.
According to some embodiments of the invention, the method is performed with the tundish cover hot after the wire is removed. Specifically, as shown in fig. 1-3, the tundish cover 1 includes an outer steel structural frame and an inner poured corundum material, a refractory material and a part of additives, the steel structural frame satisfies the rigid supporting function of the tundish cover 1, the inner corundum material has the functions of high temperature resistance, heat preservation and thermal radiation isolation, the repair material can be repaired under the condition that the tundish cover 1 is in a hot state, vibration and compaction are not needed, the residual heat of the residual refractory material in the tundish cover 1 is rapidly sintered and forms a certain strength, rapid repair can be realized, the turnover efficiency of the tundish cover 1 is high, the repair can be performed immediately, and material waste and environmental pollution caused by large dismantling of the tundish cover can be avoided.
Other constructions and operations of the tundish cover according to embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. The first feature being "on," "over" and "above" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
It should be noted that in the description of the present specification, reference to the description of "one embodiment", "some embodiments", "specific embodiments", "examples", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The repairing material for the ladle cover of the thermal-state tundish is characterized by comprising the following components in percentage by weight:
1mm-3mm of 99 white corundum: 13 percent;
1-0.5 of 99 white corundum: 18 percent;
99 white corundum of 200 meshes: 16.4 percent;
1-0 99 plate corundum: 20 percent;
200 mesh kyanite: 5 percent;
guangxi clay: 25 percent;
calcium aluminate cement: 1 percent;
sodium tripolyphosphate: 0.6 percent;
explosion-proof fiber: 1 percent.
2. The repair mass for the hot tundish cover according to claim 1, wherein the 99 white corundum comprises the following chemical components in percentage by weight:
Al2O3≥99％，SiO2≤0.2％，Na2O≤0.25％。
3. the repair mass for a hot tundish cover according to claim 1, wherein in the 1-0 99 tabular corundum, the weight percentage of 1-120 meshes is greater than or equal to 85%, and the weight percentage of 120-200 meshes is less than or equal to 15%.
4. The repair material for the ladle cover of the thermal-state tundish according to claim 1, wherein the kyanite comprises the following chemical components in percentage by weight:
Al2O3≥60％，(K2O+Na2o) is less than or equal to 0.8 percent, and caustic soda is less than or equal to 1.5 percent.
5. A construction method of a mending material for a hot tundish cover, wherein the mending material is the mending material for the hot tundish cover according to any one of claims 1 to 4, and the method comprises the following steps:
cleaning sundries at the damaged part of the tundish cover to expose the refractory material layer of the tundish cover;
adding 7% of glass water into the patching material and stirring for a period of time;
and putting the stirred mixture into the damaged part of the tundish cover, and trowelling.
6. The construction method of the mending material for the hot tundish cover according to claim 5, wherein the mending material is added with 7% of glass water and stirred for 5 minutes.
7. The construction method of the repair material for the hot tundish cover according to claim 5, wherein the method is carried out on the tundish cover after being offline in a hot state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011116164.2A CN112174683A (en) | 2020-10-19 | 2020-10-19 | Repairing material for ladle cover of thermal-state tundish and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011116164.2A CN112174683A (en) | 2020-10-19 | 2020-10-19 | Repairing material for ladle cover of thermal-state tundish and construction method thereof |
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| Publication Number | Publication Date |
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| CN112174683A true CN112174683A (en) | 2021-01-05 |
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| CN202011116164.2A Pending CN112174683A (en) | 2020-10-19 | 2020-10-19 | Repairing material for ladle cover of thermal-state tundish and construction method thereof |
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Citations (5)
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|---|---|---|---|---|
| DE102008045041A1 (en) * | 2008-08-29 | 2010-03-04 | Baerlocher Gmbh | Process for the preparation of a mixture comprising at least one inorganic solid and at least one fatty acid salt, correspondingly prepared mixtures and their use |
| CN103286304A (en) * | 2013-06-09 | 2013-09-11 | 莱芜钢铁集团有限公司 | Novel steel ladle cover and production technology |
| CN103803993A (en) * | 2014-01-08 | 2014-05-21 | 长兴明晟冶金炉料有限公司 | Self-flow castable of corundum |
| CN109467418A (en) * | 2018-11-26 | 2019-03-15 | 中冶武汉冶金建筑研究院有限公司 | A kind of long-life hot repair iron runner castable |
| CN110590383A (en) * | 2019-08-23 | 2019-12-20 | 河南恒耐尔耐火材料有限公司 | Thermal state repairing spray coating and preparation method thereof |
-
2020
- 2020-10-19 CN CN202011116164.2A patent/CN112174683A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008045041A1 (en) * | 2008-08-29 | 2010-03-04 | Baerlocher Gmbh | Process for the preparation of a mixture comprising at least one inorganic solid and at least one fatty acid salt, correspondingly prepared mixtures and their use |
| CN103286304A (en) * | 2013-06-09 | 2013-09-11 | 莱芜钢铁集团有限公司 | Novel steel ladle cover and production technology |
| CN103803993A (en) * | 2014-01-08 | 2014-05-21 | 长兴明晟冶金炉料有限公司 | Self-flow castable of corundum |
| CN109467418A (en) * | 2018-11-26 | 2019-03-15 | 中冶武汉冶金建筑研究院有限公司 | A kind of long-life hot repair iron runner castable |
| CN110590383A (en) * | 2019-08-23 | 2019-12-20 | 河南恒耐尔耐火材料有限公司 | Thermal state repairing spray coating and preparation method thereof |
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| 李凯琦: "《风化型高岭土深加工技术》", 30 June 2017 * |
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