CN111285697A - Ceramic composite wear-resistant castable - Google Patents
Ceramic composite wear-resistant castable Download PDFInfo
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- CN111285697A CN111285697A CN202010271933.XA CN202010271933A CN111285697A CN 111285697 A CN111285697 A CN 111285697A CN 202010271933 A CN202010271933 A CN 202010271933A CN 111285697 A CN111285697 A CN 111285697A
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- ceramic composite
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- resistant castable
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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
Abstract
The invention relates to the technical field of refractory materials, in particular to a ceramic composite wear-resistant castable which is prepared from the following raw materials: bauxite aggregate, ceramic powder, refractory cement, silica fume, alumina powder, silicon carbide, mineral powder, yttrium oxide powder, alumina powder, a water reducing agent and an auxiliary agent; the invention takes bauxite aggregate and ceramic powder as main raw materials, and is supplemented with refractory cement, silica fume, alumina powder, silicon carbide, mineral powder, yttrium oxide powder, alumina powder, water reducing agent, auxiliary agent and the like, so that the refractory performance of the castable can be further stabilized and enhanced, and the good fluidity can be kept.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to a ceramic composite wear-resistant castable.
Background
The castable is also called refractory castable, is a granular or powdery material prepared by adding a certain amount of bonding agent into refractory materials, has higher fluidity and is an unshaped refractory material molded by a pouring mode. In the application of refractory materials, the unshaped refractory materials have the advantages of low investment, energy consumption saving, good thermal shock stability of the manufactured integral lining body, good air tightness, capability of repairing the lining and the like, so the unshaped refractory materials are more widely applied compared with qualitative refractory materials such as refractory bricks and the like. The castable is an unshaped refractory material which is most widely produced and used at present, is mainly used in the cement fields of blast furnaces, hot blast furnaces, garbage incinerators, chemical engineering and the like, and can also be used for constructing integral structures such as heating furnace linings and the like; the high-quality variety can also be used for smelting furnaces, and the refractory castable commonly used in industry mainly comprises aluminate castable, water glass castable, phosphate castable and the like.
An existing Chinese patent is a wear-resistant refractory castable (201110400326.X), which takes special-grade alumina as coarse aggregate; super alumina, silicon carbide and corundum as fine aggregate; taking activated aluminum oxide micro powder, alumina micro powder, aluminate cement and silica fume as micro powder; the admixture comprises steel fiber, organic fiber, deflocculant and water. Solid phase reaction is accelerated by the active alumina micro powder, an anorthite-calcium hexaluminate-corundum composite binding phase is formed through medium-temperature heat treatment, the medium-temperature fired strength of the castable is improved, and the medium-temperature wear resistance of the refractory castable is enhanced, so that the aim of reducing the cost of raw materials on the premise of not influencing the mechanical strength and wear resistance of materials by partially replacing corundum with alumina is fulfilled.
In order to further improve the defects of poor strength, poor wear resistance and the like of the existing castable, the invention develops the ceramic composite wear-resistant castable.
Disclosure of Invention
In view of the above, the invention provides a ceramic composite wear-resistant castable, which takes bauxite aggregate and ceramic powder as main raw materials, is supplemented with refractory cement, silica fume, alumina powder, silicon carbide, mineral powder, yttrium oxide powder, alumina powder, a water reducing agent, an auxiliary agent and the like, can further stabilize and enhance the refractory performance of the castable, and simultaneously keep good fluidity.
In order to achieve the purpose, the invention adopts the following technical scheme:
a ceramic composite wear-resistant castable comprises the following raw materials: bauxite aggregate, ceramic powder, refractory cement, silica fume, alumina powder, silicon carbide, mineral powder, yttrium oxide powder, alumina powder, a water reducing agent and an auxiliary agent.
Preferably, the ceramic composite wear-resistant castable is prepared from the following raw materials: 50-70 parts of bauxite aggregate, 10-30 parts of ceramic powder, 15-25 parts of refractory cement powder, 7-15 parts of silica fume, 8-15 parts of alumina powder, 5-10 parts of silicon carbide, 10-20 parts of mineral powder, 5-10 parts of yttrium oxide powder, 7-12 parts of alumina powder, 5-15 parts of water reducing agent and 5-15 parts of auxiliary agent.
Preferably, the ceramic composite wear-resistant castable is prepared from the following raw materials: 60 parts of bauxite aggregate, 15 parts of ceramic powder, 18 parts of refractory cement, 10 parts of silica fume, 10 parts of alumina powder, 6 parts of silicon carbide, 12 parts of mineral powder, 7 parts of yttrium oxide powder, 8 parts of alumina powder, 6 parts of water reducing agent and 8 parts of auxiliary agent.
Preferably, the ceramic composite wear-resistant castable is prepared from the following raw materials: 65 parts of bauxite aggregate, 20 parts of ceramic powder, 20 parts of refractory cement powder, 7 parts of silica fume, 12 parts of alumina powder, 7 parts of silicon carbide, 10 parts of mineral powder, 8 parts of yttrium oxide powder, 10 parts of alumina powder, 5 parts of water reducing agent and 8 parts of auxiliary agent.
Preferably, the auxiliary agents are set retarders, setting accelerators and flame retardants according to the ratio of 1-3: 1-2: 2-4 weight ratio.
Preferably, the auxiliary agents are retarders, coagulants and flame retardants according to the ratio of 2: 2: 3 by weight ratio.
Preferably, the retarder is one of calcium saccharate, gluconate, citric acid, tartaric acid, zinc salt and phosphate, and the flame retardant is one of alkyl phosphate, aryl phosphate, aliphatic halogenated hydrocarbon, tellurium compound, aluminum hydroxide, magnesium hydroxide and borate.
Preferably, the mineral powder is any mixture of talcum powder, corundum powder, mica powder and mullite powder.
Preferably, the ceramic composite wear-resistant castable also comprises 3-6 parts of pyrophyllite powder.
Preferably, the ceramic composite wear-resistant castable also comprises 10-15 parts of mullite powder.
Compared with the prior art, the invention has the beneficial effects that: the invention takes bauxite aggregate and ceramic powder as main raw materials, wherein the bauxite aggregateDegree of refractorinessUp to 1780 deg.c,chemical stabilityStrong physical property, good quality refractory material, ceramic powder with SiO2 and Al2O3 as main components, good dispersibility, high covering power, high whiteness, good suspension, good chemical stability and plasticityGood performance, high heat-resisting temperature, small density, low ignition loss, good light scattering performance and good insulativity, and can be used for corrosion prevention, fire prevention, high temperature resistance, powder, building coating and various industries; the invention is assisted by adding refractory cement, silica fume, alumina powder, silicon carbide, mineral powder, yttrium oxide powder, alumina powder, water reducing agent, auxiliary agent and the like, can further stabilize and enhance the refractory performance of the castable, simultaneously keep good fluidity, can enable the product to have the advantages of high temperature, good heat insulation and the like by adding alumina, promotes the sintering of the product by adding yttrium oxide, has smaller pores and more uniform distribution, improves the volume density of the product, increases the compressive strength, and enables the product to have the characteristics of uniform expansion, excellent thermal shock stability, high loading softening point, small high-temperature creep value, large hardness, chemical corrosion resistance and the like by adding mullite powder into the product.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A ceramic composite wear-resistant castable comprises the following raw materials: 60 parts of bauxite aggregate, 15 parts of ceramic powder, 18 parts of refractory cement, 10 parts of silica fume, 10 parts of alumina powder, 6 parts of silicon carbide, 12 parts of mineral powder, 7 parts of yttrium oxide powder, 8 parts of alumina powder, 6 parts of water reducing agent and 8 parts of auxiliary agent.
In example 1, the adjuvants are set retarder, set accelerator, flame retardant according to a ratio of 2: 2: 3, wherein the retarder is calcium saccharate, and the flame retardant is alkyl phosphate.
In example 1, the mineral powder is talc powder, corundum powder, mica powder, and mullite powder in a weight ratio of 1: 2: 2: 1.
In example 1, the ceramic composite wear-resistant castable further comprises 5 parts of pyrophyllite powder.
Example 2
A ceramic composite wear-resistant castable comprises the following raw materials: 65 parts of bauxite aggregate, 20 parts of ceramic powder, 20 parts of refractory cement powder, 7 parts of silica fume, 12 parts of alumina powder, 7 parts of silicon carbide, 10 parts of mineral powder, 8 parts of yttrium oxide powder, 10 parts of alumina powder, 5 parts of water reducing agent and 8 parts of auxiliary agent.
In example 2, the adjuvants are set retarder, set accelerator, flame retardant according to a ratio of 2: 1: 3, wherein the retarder is phosphate, and the flame retardant is aliphatic halogenated hydrocarbon.
In example 2, the mineral powder is talc powder, corundum powder, mica powder, and mullite powder in a weight ratio of 3: 2: 1: 4 in the ratio configuration.
In embodiment 2, the ceramic composite wear-resistant castable further comprises 12 parts of mullite powder.
Example 3
A ceramic composite wear-resistant castable comprises the following raw materials: 55 parts of bauxite aggregate, 15 parts of ceramic powder, 15 parts of refractory cement, 7 parts of silica fume, 10 parts of alumina powder, 10 parts of silicon carbide, 10 parts of mineral powder, 8 parts of yttrium oxide powder, 10 parts of alumina powder, 10 parts of water reducing agent and 8 parts of auxiliary agent.
In example 3, the adjuvants are set retarder, set accelerator, flame retardant according to a ratio of 3: 2: 4, wherein the retarder is zinc salt, and the flame retardant is magnesium hydroxide.
In example 3, the mineral powder is talc powder, corundum powder, mica powder, and mullite powder in a weight ratio of 5: 4: 2: 3.
In embodiment 3, the ceramic composite wear-resistant castable further comprises 15 parts of mullite powder.
Test examples
The ceramic composite wear-resistant castable prepared in examples 1 to 3 was used as example 1, example 2 and example 3, respectively, castable materials a and b produced by different commercial manufacturers were used as comparative example 1 and comparative example 2, and the wear resistance of the five castable materials was tested according to the specification of national standard GB/T18301-2001 (2004) in such a manner that a test surface of a test piece of a specified shape (100 mm. times.100 mm. times.30 mm) was vertically faced to a sand blast pipe of a wear tester, a wear medium was blown onto the test piece through the sand blast pipe by using compressed air, and the wear loss of the test piece was measured as A, and the test results are shown in Table 1.
A＝(M1-M2)/B
Where M1 and M2 represent the weight of the sample before and after the test, and B represents the bulk density of the sample.
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | |
| A | 12％ | 10％ | 11％ | 15％ | 17％ |
TABLE 1
The results in table 1 show that the wear loss of the ceramic composite wear-resistant castable material prepared by the invention is lower than that of the commercial product, so that the ceramic composite wear-resistant castable material has better wear resistance compared with the prior art.
Finally, it should be noted that the above-mentioned preferred embodiments of the present invention are provided merely to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The ceramic composite wear-resistant castable is characterized by comprising the following raw materials: bauxite aggregate, ceramic powder, refractory cement, silica fume, alumina powder, silicon carbide, mineral powder, yttrium oxide powder, alumina powder, a water reducing agent and an auxiliary agent.
2. The ceramic composite wear-resistant castable material according to claim 1, which is prepared from the following raw materials: 50-70 parts of bauxite aggregate, 10-30 parts of ceramic powder, 15-25 parts of refractory cement powder, 7-15 parts of silica fume, 8-15 parts of alumina powder, 5-10 parts of silicon carbide, 10-20 parts of mineral powder, 5-10 parts of yttrium oxide powder, 7-12 parts of alumina powder, 5-15 parts of water reducing agent and 5-15 parts of auxiliary agent.
3. The ceramic composite wear-resistant castable material according to claim 1, which is prepared from the following raw materials: 60 parts of bauxite aggregate, 15 parts of ceramic powder, 18 parts of refractory cement, 10 parts of silica fume, 10 parts of alumina powder, 6 parts of silicon carbide, 12 parts of mineral powder, 7 parts of yttrium oxide powder, 8 parts of alumina powder, 6 parts of water reducing agent and 8 parts of auxiliary agent.
4. The ceramic composite wear-resistant castable material according to claim 1, which is prepared from the following raw materials: 65 parts of bauxite aggregate, 20 parts of ceramic powder, 20 parts of refractory cement powder, 7 parts of silica fume, 12 parts of alumina powder, 7 parts of silicon carbide, 10 parts of mineral powder, 8 parts of yttrium oxide powder, 10 parts of alumina powder, 5 parts of water reducing agent and 8 parts of auxiliary agent.
5. The ceramic composite wear-resistant castable according to claim 1, wherein the auxiliary agent is a retarder, a coagulant, a flame retardant according to a ratio of 1-3: 1-2: 2-4 weight ratio.
6. The ceramic composite wear-resistant castable according to claim 1, wherein the auxiliary agents are retarders, accelerators and flame retardants according to a ratio of 2: 2: 3 by weight ratio.
7. The ceramic composite wear-resistant castable according to claim 1, wherein the retarder is one of calcium saccharate, gluconate, citric acid, tartaric acid, zinc salt and phosphate, and the flame retardant is one of alkyl phosphate, aryl phosphate, aliphatic halogenated hydrocarbon, tellurium compound, aluminum hydroxide, magnesium hydroxide and borate.
8. The ceramic composite wear-resistant castable according to claim 1, wherein the mineral powder is any mixture of talcum powder, corundum powder, mica powder and mullite powder.
9. The ceramic composite wear-resistant castable according to claim 2, further comprising 3-6 parts of pyrophyllite powder.
10. The ceramic composite wear-resistant castable according to claim 2, characterized by further comprising 10-15 parts of mullite powder.
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| CN202010271933.XA CN111285697A (en) | 2020-04-09 | 2020-04-09 | Ceramic composite wear-resistant castable |
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| CN202010271933.XA CN111285697A (en) | 2020-04-09 | 2020-04-09 | Ceramic composite wear-resistant castable |
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Citations (6)
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| CN1994958A (en) * | 2006-12-19 | 2007-07-11 | 安徽省宁国市耐火材料有限责任公司 | Super intensified abrasion-proof pouring material |
| EP2565173A1 (en) * | 2011-09-02 | 2013-03-06 | Calderys France | Castable refractory composition |
| CN103172397A (en) * | 2013-04-17 | 2013-06-26 | 丁剑 | High-strength anti-corrosion wear-resistant castable and preparation method thereof |
| CN103214253A (en) * | 2013-04-27 | 2013-07-24 | 阳泉金隅通达高温材料有限公司 | High-strength and anti-stripping type homogenous composite castable and preparation method |
| CN104311066A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Wear-resisting thermal-insulating refractory castable material |
| CN105218128A (en) * | 2015-11-04 | 2016-01-06 | 长兴明天炉料有限公司 | A kind of High-Alumina heat-insulation and heat-preservation mould material |
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- 2020-04-09 CN CN202010271933.XA patent/CN111285697A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1994958A (en) * | 2006-12-19 | 2007-07-11 | 安徽省宁国市耐火材料有限责任公司 | Super intensified abrasion-proof pouring material |
| EP2565173A1 (en) * | 2011-09-02 | 2013-03-06 | Calderys France | Castable refractory composition |
| CN103172397A (en) * | 2013-04-17 | 2013-06-26 | 丁剑 | High-strength anti-corrosion wear-resistant castable and preparation method thereof |
| CN103214253A (en) * | 2013-04-27 | 2013-07-24 | 阳泉金隅通达高温材料有限公司 | High-strength and anti-stripping type homogenous composite castable and preparation method |
| CN104311066A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Wear-resisting thermal-insulating refractory castable material |
| CN105218128A (en) * | 2015-11-04 | 2016-01-06 | 长兴明天炉料有限公司 | A kind of High-Alumina heat-insulation and heat-preservation mould material |
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| 李凯琦等: "《风化高岭土深加工技术》", 30 June 2017, 中国建材工业出版社 * |
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Application publication date: 20200616 |