CN114213113B - Ladle hot repair material, preparation method thereof and ladle hot repair method - Google Patents
Ladle hot repair material, preparation method thereof and ladle hot repair method Download PDFInfo
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- CN114213113B CN114213113B CN202111652271.1A CN202111652271A CN114213113B CN 114213113 B CN114213113 B CN 114213113B CN 202111652271 A CN202111652271 A CN 202111652271A CN 114213113 B CN114213113 B CN 114213113B
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/105—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- 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
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
Abstract
The invention discloses a ladle hot-repair material, a preparation method thereof and a ladle hot-repair method, and relates to the technical field of ladle repair. The invention comprises a ladle hot-fill material, which consists of 55-80 parts by weight of corundum, 6-12 parts by weight of alpha alumina micropowder, 6-12 parts by weight of aluminum-magnesium gel powder, 3-8 parts by weight of chrome green, 1-8 parts by weight of reinforcing pore-forming agent and 6-12% by weight of light auxiliary forming pore-forming agent; the problem that the air permeability and the strength of the existing cloth cannot be compatible is solved.
Description
Technical Field
The invention relates to the technical field of ladle repair, in particular to a ladle hot-repair material, a preparation method thereof and a ladle hot-repair method.
Background
The ladle is used for carrying molten steel in front of an open hearth furnace, an electric furnace or a converter in a steel plant or a foundry for casting operation. Now, with the continuous development of steel-making technology, the ladle has an increasing effect. In the past, the ladle only plays a role in transferring molten steel, and in order to improve the production efficiency of a steel mill, operations such as refining and the like are performed in the ladle. Thus, after long-time use, the ladle can be damaged to a certain extent due to long-time high-temperature operation.
At present, in the process of repairing the ladle, the existing ladle repairing process generally adopts a semi-casting and semi-masonry process, so that the operation process is complicated and the ladle repairing performance is poor.
Disclosure of Invention
The invention aims to provide a ladle hot-fill material to solve the problem that the air permeability and strength of the existing cloth cannot be compatible.
In order to solve the problems, the invention adopts the following technical means:
the ladle hot-repairing material consists of 55-80 parts by weight of corundum, 6-12 parts by weight of alpha alumina micropowder, 6-12 parts by weight of aluminum-magnesium gel powder, 3-8 parts by weight of chrome green, 1-8 parts by weight of reinforcing pore-forming agent and 6-12% by weight of light auxiliary forming pore-forming agent.
Preferably, the reinforcing pore former is magnesium iodide octahydrate.
Further, the lightweight auxiliary forming pore-forming agent is light magnesium carbonate.
Further, the corundum comprises plate-shaped corundum and white corundum, wherein the plate-shaped corundum is 15-20 parts by weight, and the white corundum is 40-60 parts by weight.
Further, the particle size of the plate-shaped corundum is 1-0 mm, the white corundum is 16-mesh white corundum, and the particle size of the alpha alumina micro powder is 2 mu m.
In the using process of the invention, the magnesium aluminum gel is a composite gel powder. When the baking temperature is higher than 200 ℃, the ceramic bonding phase is in a molten state, and a network-shaped or interpenetrated ceramic bonding phase is generated, so that the material has certain strength, and the ceramic bonding phase also ensures the baking strength at medium temperature (1100 ℃) and the high-temperature service performance.
After the decomposition reaction of the magnesium iodide octahydrate, the generated magnesium oxide is helpful for forming a ceramic bonding phase, and the escaped vapor can form a through air passage in the material to play a role in increasing ventilation. The same effect can be achieved by theoretically using hydrated magnesium sulfate and hydrated magnesium chloride, but the test results show that the effect of the magnesium iodide octahydrate is far better than that of the other two. Meanwhile, in the effective process of the magnesium iodide octahydrate, a small amount of generated iodine vapor can play a role of a reinforcing agent, in the process of forming the air passage, the solidification of the air passage wall is accelerated, the collapse of the air passage in the forming process is avoided, and meanwhile, after the air passage is formed, the solid substance base block can be hardened.
The bulk density of the light magnesium carbonate is very low, so that the bulk density of the material can be remarkably reduced, the material can have the characteristic of light weight, and the situation that the air passage collapses in the process of forming the air passage is further avoided. Meanwhile, magnesium oxide, which is a decomposition product of the ceramic composite material, reacts with aluminum oxide to form spinel, so that a ceramic bonding phase is generated, and the strength of the machine body is improved; and the gas generated by decomposition is also helpful for forming a loose porous structure in the material, so that the ventilation capacity of the material can meet the use requirement.
In the whole composite material, the magnesium aluminum gel powder plays a role in combination, so that the overall strength of the material is improved, but the material is densified, and the ventilation capacity is reduced; the magnesium iodide octahydrate and the light magnesium carbonate act together to form a loose and porous internal structure, so that on one hand, the ventilation capability is ensured, the material strength is reduced, and on the other hand, the activity of the decomposed magnesium oxide is high, the reaction for generating spinel can be promoted, the ceramic bonding phase is consolidated, and the strength is improved; the light magnesium carbonate has low bulk density and excellent capability of improving the ventilation performance of the material.
In addition, the preparation method of the feed is simple and convenient, and the materials except the magnesium iodide octahydrate are only required to be mixed, and when the feed is required to be used, the magnesium iodide octahydrate is added. Specifically, a preparation method of ladle hot-fill material is to uniformly mix plate-shaped corundum, white corundum, alpha alumina micro powder, aluminum magnesium gel powder, chrome green and light magnesium carbonate, package, and then package separately the magnesium iodide octahydrate.
In addition, when repairing the steel ladle, the ladle repairing method only needs to pour a hot repairing agent into the position to be repaired in the steel ladle, then directly putting the steel ladle with the repairing material into a ladle baking device for baking, in particular to the ladle hot repairing method, after cleaning the steel ladle to be repaired, putting the hot repairing material consisting of platy corundum, white corundum, alpha alumina micro powder, aluminum magnesium gel powder, chrome green, light magnesium carbonate and magnesium iodide octahydrate into the steel ladle to be repaired, and then directly baking the steel ladle containing the hot repairing material on the ladle baking device for 4-6 hours.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.
Example 1
The ladle hot-repairing material consists of 55 parts of corundum, 6 parts of alpha alumina micropowder, 6 parts of aluminum magnesium gel powder, 3 parts of chrome green, 1 part of reinforcing pore-forming agent and 6 parts of lightweight auxiliary forming pore-forming agent.
The reinforcing pore-forming agent is magnesium iodide octahydrate.
The lightweight auxiliary forming pore-forming agent is light magnesium carbonate.
The corundum comprises 15 parts by weight of plate-shaped corundum and 40 parts by weight of white corundum.
The particle size of the platy corundum is 1-0 mm, the white corundum is 16-mesh white corundum, and the particle size of the alpha alumina micropowder is 2 mu m.
The preparation method comprises the following steps: uniformly mixing platy corundum, white corundum, alpha alumina micropowder, aluminum magnesium gel powder, chrome green and light magnesium carbonate, packaging, and then packaging the magnesium iodide octahydrate separately.
The ladle hot repair method comprises the following steps: after cleaning the ladle to be repaired, putting hot-repair materials consisting of platy corundum, white corundum, alpha alumina micro powder, aluminum magnesium gel powder, chrome green, light magnesium carbonate and magnesium iodide octahydrate into the ladle to be repaired, and then directly baking the ladle containing the hot-repair materials on a ladle baking device for 4-6 hours.
Example 2
The ladle hot-repairing material consists of 70 parts of corundum, 9 parts of alpha alumina micropowder, 9 parts of aluminum magnesium gel powder, 5 parts of chrome green, 4 parts of reinforcing pore-forming agent and 9 parts of lightweight auxiliary forming pore-forming agent.
The reinforcing pore-forming agent is magnesium iodide octahydrate.
The lightweight auxiliary forming pore-forming agent is light magnesium carbonate.
The corundum comprises 17 parts by weight of plate-shaped corundum and 53 parts by weight of white corundum.
The particle size of the platy corundum is 1-0 mm, the white corundum is 16-mesh white corundum, and the particle size of the alpha alumina micropowder is 2 mu m.
The preparation method comprises the following steps: uniformly mixing platy corundum, white corundum, alpha alumina micropowder, aluminum magnesium gel powder, chrome green and light magnesium carbonate, packaging, and then packaging the magnesium iodide octahydrate separately.
The ladle hot repair method comprises the following steps: after cleaning the ladle to be repaired, putting hot-repair materials consisting of platy corundum, white corundum, alpha alumina micro powder, aluminum magnesium gel powder, chrome green, light magnesium carbonate and magnesium iodide octahydrate into the ladle to be repaired, and then directly baking the ladle containing the hot-repair materials on a ladle baking device for 4-6 hours.
Example 3
The ladle hot-repairing material consists of 80 parts of corundum, 12 parts of alpha alumina micropowder, 12 parts of aluminum magnesium gel powder, 8 parts of chrome green, 8 parts of reinforcing pore-forming agent and 12 parts of light auxiliary forming pore-forming agent.
The reinforcing pore-forming agent is magnesium iodide octahydrate.
The lightweight auxiliary forming pore-forming agent is light magnesium carbonate.
The corundum comprises 20 parts by weight of plate-shaped corundum and 60 parts by weight of white corundum.
The particle size of the platy corundum is 1-0 mm, the white corundum is 16-mesh white corundum, and the particle size of the alpha alumina micropowder is 2 mu m.
The preparation method comprises the following steps: uniformly mixing platy corundum, white corundum, alpha alumina micropowder, aluminum magnesium gel powder, chrome green and light magnesium carbonate, packaging, and then packaging the magnesium iodide octahydrate separately.
The ladle hot repair method comprises the following steps: after cleaning the ladle to be repaired, putting hot-repair materials consisting of platy corundum, white corundum, alpha alumina micro powder, aluminum magnesium gel powder, chrome green, light magnesium carbonate and magnesium iodide octahydrate into the ladle to be repaired, and then directly baking the ladle containing the hot-repair materials on a ladle baking device for 4-6 hours.
In the using process of the invention, the magnesium aluminum gel is a composite gel powder. When the baking temperature is higher than 200 ℃, the ceramic bonding phase is in a molten state, and a network-shaped or interpenetrated ceramic bonding phase is generated, so that the material has certain strength, and the ceramic bonding phase also ensures the baking strength at medium temperature (1100 ℃) and the high-temperature service performance.
After the decomposition reaction of the magnesium iodide octahydrate, the generated magnesium oxide is helpful for forming a ceramic bonding phase, and the escaped vapor can form a through air passage in the material to play a role in increasing ventilation. The same effect can be achieved by theoretically using hydrated magnesium sulfate and hydrated magnesium chloride, but the test results show that the effect of the magnesium iodide octahydrate is far better than that of the other two. Meanwhile, in the effective process of the magnesium iodide octahydrate, a small amount of generated iodine vapor can play a role of a reinforcing agent, in the process of forming the air passage, the solidification of the air passage wall is accelerated, the collapse of the air passage in the forming process is avoided, and meanwhile, after the air passage is formed, the solid substance base block can be hardened.
The bulk density of the light magnesium carbonate is very low, so that the bulk density of the material can be remarkably reduced, the material can have the characteristic of light weight, and the situation that the air passage collapses in the process of forming the air passage is further avoided. Meanwhile, magnesium oxide, which is a decomposition product of the ceramic composite material, reacts with aluminum oxide to form spinel, so that a ceramic bonding phase is generated, and the strength of the machine body is improved; and the gas generated by decomposition is also helpful for forming a loose porous structure in the material, so that the ventilation capacity of the material can meet the use requirement.
In the whole composite material, the magnesium aluminum gel powder plays a role in combination, so that the overall strength of the material is improved, but the material is densified, and the ventilation capacity is reduced; the magnesium iodide octahydrate and the light magnesium carbonate act together to form a loose and porous internal structure, so that on one hand, the ventilation capability is ensured, the material strength is reduced, and on the other hand, the activity of the decomposed magnesium oxide is high, the reaction for generating spinel can be promoted, the ceramic bonding phase is consolidated, and the strength is improved; the light magnesium carbonate has low bulk density and excellent capability of improving the ventilation performance of the material.
In addition, the preparation method of the feed is simple and convenient, and the materials except the magnesium iodide octahydrate are only required to be mixed, and when the feed is required to be used, the magnesium iodide octahydrate is added.
In summary, by comparing example 1, example 2 and example 3, the performance of example 2 is optimized, the apparent porosity can reach 37%, and the volume density is 2.38g/cm 3 The flexural strength of the material is 18MPa when the material is kept at 1200 ℃ for 6 hours, and the compressive strength of the material is 80MPa when the material is kept at 1200 ℃ for 6 hours.
Several comparative examples are used below for comparison.
Comparative example 1
The magnesium iodide octahydrate in example 2 was replaced with water and magnesium sulfate.
Comparative example 2
The magnesium iodide octahydrate in example 2 was replaced with water and magnesium chloride.
Comparative example 3
The light magnesium carbonate in example 2 was replaced with calcium carbonate.
The finally formed materials were compared and the results were as follows:
by comparing example 2 with comparative examples 1 and 2, the addition of magnesium iodide octahydrate not only improves apparent porosity, but also reduces bulk density, and has mechanical properties similar to those of comparative examples 1 and 2, and good structural strength. That is, although water and magnesium sulfate and water and magnesium chloride can serve the purpose of increasing the strength of the material, a large number of pores collapse during the reaction, resulting in the occurrence of a case where the apparent porosity is low and the bulk density is large. The magnesium iodide octahydrate is adopted, the overflowed water vapor can form a function, and the overflowed small amount of iodine vapor can strengthen the generated function, so that the condition that an air passage collapses in the reaction process is effectively avoided, the final finished product is higher in apparent porosity and smaller in body density of the embodiment 2, and the final structural strength is similar to that of the comparative examples 1 and 2.
In addition, in comparison between example 2 and comparative example 3, the apparent porosity of the light magnesium carbonate was similar to that of the light magnesium carbonate and the calcium carbonate, but the bulk density of comparative example 3 was larger, and the structural strength was smaller than that of example 2 even in the case of the larger bulk density, because the calcium carbonate hardly promoted the formation of the ceramic bonding phase during the action of the calcium carbonate in the present application, and therefore, the structural strength was still lower than that of example 2 even if the bulk density of comparative example 3 was larger.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (1)
1. A ladle hot repair method is characterized in that: the ladle hot-repairing material comprises, by weight, 55-80 parts of corundum, 6-12 parts of alpha alumina micro powder, 6-12 parts of aluminum magnesium gel powder, 3-8 parts of chrome green, 1-8 parts of reinforcing pore-forming agent and 6-12 parts of light auxiliary forming pore-forming agent;
the reinforcing pore-forming agent is magnesium iodide octahydrate;
the lightweight auxiliary forming pore-forming agent is light magnesium carbonate;
the corundum comprises 15-20 parts by weight of plate-shaped corundum and 40-60 parts by weight of white corundum;
the particle size of the platy corundum is 1-0 mm, the white corundum is 16-mesh white corundum, and the particle size of the alpha alumina micropowder is 2 mu m;
the ladle hot-fill is prepared in the following way:
uniformly mixing platy corundum, white corundum, alpha alumina micropowder, aluminum magnesium gel powder, chrome green and light magnesium carbonate, packaging, and then packaging the magnesium iodide octahydrate separately;
the hot repair method comprises the following steps: and (3) after cleaning the ladle to be repaired, putting a hot-repair material consisting of platy corundum, white corundum, alpha alumina micro powder, aluminum magnesium gel powder, chrome green, light magnesium carbonate and magnesium iodide octahydrate into the ladle to be repaired, and directly baking the ladle containing the hot-repair material on a ladle baking device for 4-6 hours.
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| JP2733644B2 (en) * | 1993-11-02 | 1998-03-30 | ミンテックジャパン株式会社 | Non-phosphoric acid spray repair material |
| CN101508587B (en) * | 2009-03-26 | 2012-01-18 | 中钢集团洛阳耐火材料研究院有限公司 | Corundum-spinel pouring material containing nano-magnesium carbonate |
| CN102424591A (en) * | 2011-09-08 | 2012-04-25 | 大连市金州金河化工建材厂 | Spinel-magnesia refractory castable |
| CN103073313B (en) * | 2013-01-30 | 2014-06-04 | 郑州大学 | Calcium aluminate cement bonded corundum castable containing calcium carbonate micropowder and preparation method of castable |
| CN103896615B (en) * | 2014-04-14 | 2015-03-25 | 武汉科技大学 | Aluminum-magnesium casting material for ladle liner and preparation method thereof |
| CN106045484B (en) * | 2016-05-23 | 2018-12-11 | 广东国鑫实业股份有限公司 | A kind of steel ladle working layer castable and its preparation method and application |
| CN107266092A (en) * | 2017-07-01 | 2017-10-20 | 万燕杰 | A kind of magnesium colloidal sol complex abrasion-proof castable and preparation method thereof |
| CN107311679B (en) * | 2017-07-28 | 2019-12-10 | 武汉科技大学 | Lightweight corundum-magnesium aluminate spinel castable and preparation method thereof |
| CN110563451B (en) * | 2019-10-17 | 2022-03-15 | 长兴煤山新型炉料有限公司 | Ceramic ladle castable and preparation method thereof |
| CN113636851A (en) * | 2021-09-10 | 2021-11-12 | 长兴兴鹰新型耐火建材有限公司 | Corundum-mullite gel composite wear-resistant castable and baking and setting method thereof |
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