CN118930292A - A Ti2O3-containing andalusite refractory material and preparation method thereof - Google Patents
A Ti2O3-containing andalusite refractory material and preparation method thereof Download PDFInfo
- Publication number
- CN118930292A CN118930292A CN202411141185.8A CN202411141185A CN118930292A CN 118930292 A CN118930292 A CN 118930292A CN 202411141185 A CN202411141185 A CN 202411141185A CN 118930292 A CN118930292 A CN 118930292A
- Authority
- CN
- China
- Prior art keywords
- andalusite
- parts
- refractory material
- ti2o3
- mullite
- 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
-
- 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
-
- 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
- C04B2235/02—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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
- C04B2235/3843—Titanium carbides
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3886—Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- 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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明公开了一种含Ti2O3的红柱石耐火材料及其制备方法，属于耐火材料技术领域。本发明的含Ti2O3的红柱石耐火材料的原料按质量份数计，包括：红柱石69‑90份、混合细粉10～31份和酚醛树脂结合剂3.5份；所述混合细粉中包含质量比28：3的钛白粉和金属铝粉。本发明制备的含Ti2O3的红柱石耐火材料具有蠕变性低、抗热震性好，高致密度、高强度和高抗渗透侵蚀性等优点。本发明利用生成的Al2O3进一步与红柱石的富硅玻璃相反应生成二次莫来石，提高体系的结合强度。同时利用原位生成的细分散的Ti2O3以独立相形式均匀弥散在莫来石晶界处，几乎不向莫来石中固溶，可以抑制莫来石晶体的各向异性生长，促进材料致密化，降低气孔率，提升其抗渗透侵蚀性能。
The invention discloses a Ti2O3 -containing andalusite refractory material and a preparation method thereof, and belongs to the technical field of refractory materials. The raw materials of the Ti2O3 - containing andalusite refractory material of the invention include, by mass, 69-90 parts of andalusite, 10-31 parts of mixed fine powder and 3.5 parts of phenolic resin binder; the mixed fine powder contains titanium dioxide and metal aluminum powder in a mass ratio of 28: 3 . The Ti2O3 -containing andalusite refractory material prepared by the invention has the advantages of low creep, good thermal shock resistance, high density, high strength and high resistance to penetration and erosion. The invention utilizes the generated Al2O3 to further react with the silicon-rich glass phase of andalusite to generate secondary mullite, thereby improving the bonding strength of the system. At the same time, the finely dispersed Ti 2 O 3 generated in situ is evenly dispersed in the mullite grain boundary in the form of an independent phase, and hardly dissolves in the mullite, which can inhibit the anisotropic growth of mullite crystals, promote material densification, reduce porosity, and improve its resistance to penetration and erosion.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to a andalusite refractory material containing Ti 2O3 and a preparation method thereof.
Background
Andalusite (Al 2O3·SiO2) is a natural mineral, has the characteristics of low heat conductivity, stable volume, high mechanical strength, excellent creep resistance, excellent CO erosion resistance and the like, can be directly used for manufacturing refractory materials without calcining, and is widely applied to industries such as metallurgy, building materials and the like.
Andalusite is generally a long columnar crystal with a cross section approaching a square. The content of andalusite phase in andalusite is generally 90% -95%, and impurity components are directionally arranged in crystal and are cross-shaped in cross section. In fact, the grains of the single andalusite still maintain the original morphology and chemical composition during the mullite process. At high temperatures, individual andalusite grains are transformed into a unique composite structure: reticulated mullite having capillary pores and a silica-rich glass phase filled therein. However, the mullite crystals arranged in long columns make densification of the material difficult, and the porosity of the material is high, so that the permeation resistance is affected. Therefore, how to solve the problems of high porosity, difficult densification and poor permeation resistance of andalusite refractory materials in the prior art is to design a novel preparation scheme of the refractory materials, which is a problem to be solved by researchers in the field.
Disclosure of Invention
The invention aims to provide a andalusite refractory material containing Ti 2O3 and a preparation method thereof. The andalusite refractory material containing Ti 2O3 prepared by the invention has the advantages of low creep property, good thermal shock resistance, high density, high strength, high permeation erosion resistance and the like.
In order to achieve the above purpose, the present invention provides the following technical solutions:
One of the technical schemes of the invention is as follows: the andalusite refractory material containing Ti 2O3 is provided, and comprises the following raw materials in parts by weight:
69-90 parts of andalusite, 10-31 parts of mixed fine powder and 3.5 parts of phenolic resin binder;
The mixed fine powder comprises the following components in percentage by mass: 3 titanium dioxide and aluminum metal powder.
Preferably, the andalusite has the following particle size and corresponding mass fraction: 15 to 25 parts of andalusite particles with the granularity of 0 to 1mm and not 0, 15 to 25 parts of andalusite particles with the granularity of 1 to 3mm, and 19 to 40 parts of andalusite particles with the granularity of 3 to 5mm.
Preferably, the granularity of the titanium dioxide is less than or equal to 45 mu m.
Preferably, the granularity of the metal aluminum powder is less than or equal to 45 mu m.
The second technical scheme of the invention is as follows: the preparation method of the andalusite refractory material containing Ti 2O3 comprises the following steps:
and mixing the raw materials, pressing and forming to obtain a green body, and sintering to obtain the andalusite refractory material containing Ti 2O3.
Preferably, the sintering is carried out in a protective atmosphere at a temperature of 1300-1700 ℃ for 3-10 hours.
The beneficial technical effects of the invention are as follows:
the invention designs a preparation method of a andalusite refractory material containing Ti 2O3. In the high-temperature sintering process, the metal aluminum powder is used as a reducing agent to react with titanium dioxide (6 TiO 2+2Al＝Al2O3+3Ti2O3, which is about 800 ℃), so as to generate finely dispersed Ti 2O3 and Al 2O3 in situ. On one hand, the generated Al 2O3 is further reacted with the silicon-rich glass phase of andalusite to generate the secondary mullite, so that the bonding strength of the system is improved. On the other hand, the Ti 2O3 which is generated in situ and is finely dispersed is uniformly dispersed at the mullite grain boundary in an independent phase form, is hardly dissolved into mullite, can inhibit anisotropic growth of mullite crystals, promote densification of materials, reduce porosity (see figure 2) and improve permeation erosion resistance of the mullite.
The Ti 2O3 phase is mainly introduced to inhibit anisotropic development of mullite crystals, prevent the development of the mullite crystals from generating a long columnar morphology to influence densification, namely Ti 2O3 is distributed at mullite grain boundaries to inhibit radial development of the mullite crystals, and change the morphology of the mullite crystals to enable the mullite crystals to grow into grains which are easy to realize densification. However, in order to achieve the object of dispersing Ti 2O3 in mullite grain boundaries to inhibit the growth thereof, ti 2O3 is required to be of a small size on the micrometer/nanometer scale and to be highly uniformly dispersed. If the micron/nano-scale Ti 2O3 particles are directly introduced, uniform dispersion and distribution at mullite grain boundaries are difficult to achieve.
In the high-temperature service process of the andalusite refractory material, ti 2O3 can further react with C, N 2 and the like in the system to generate non-oxide reinforcing phases such as TiC, tiN or Ti (C, N) solid solution and the like with high melting point, high heat conduction and high corrosion resistance in situ, so that the corrosion resistance, thermal shock resistance and high-temperature strength of the material can be improved.
The andalusite refractory material containing Ti 2O3 prepared by the invention has the advantages of low creep property, good thermal shock resistance, high density, high strength, high permeation erosion resistance and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the preparation flow of examples 1-3.
FIG. 2 is a graph of the microtopography of the product of example 1. Wherein, (a), (b), (c) and (d) are respectively microcosmic topography maps with different magnifications.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention.
The terms "comprising," "including," "having," "containing," and the like as used herein are open-ended terms, meaning including, but not limited to.
The particle size and the corresponding parts by weight of andalusite used in the following examples and comparative examples of the present invention are as follows: 25 parts of andalusite particles with the particle size of 0-1mm and not 0, 25 parts of andalusite particles with the particle size of 1-3mm and 30 parts of andalusite particles with the particle size of 3-5 mm.
The particle size of the titanium pigment used in the following examples and comparative examples of the present invention was 45. Mu.m.
The particle size of the aluminum powder used in each of the following examples and comparative examples of the present invention is 45. Mu.m.
The normal temperature in the invention is calculated according to the temperature of 20-30 ℃ unless otherwise specified.
The raw materials used in the following examples and comparative examples of the present invention are all commercially available products.
FIG. 1 is a schematic illustration of the preparation flow of examples 1-3.
Example 1
The andalusite refractory material comprises the following raw materials in parts by mass:
69 parts of andalusite, 28 parts of titanium dioxide, 3 parts of metal aluminum powder and 3.5 parts of phenolic resin binder.
Preparation of andalusite refractory material:
mixing the raw materials, uniformly mixing to obtain pug, pressing and forming to obtain a green body, drying until the water content is less than 1.5wt.%, and placing into a tunnel kiln, and preserving the temperature for 10 hours at 1300 ℃ in an argon atmosphere to obtain the andalusite refractory material containing Ti 2O3.
The product of the embodiment has the apparent porosity of 11.3%, the volume density of 2.95g/cm 3, the normal-temperature compressive strength (according to national standard GBT 5072-2008 test) of 251MPa and the thermal shock stability cycle number (1100 ℃ and water cooling) of more than or equal to 28 times.
FIG. 2 is a graph of the microtopography of the product of example 1. Wherein, (a), (b), (c) and (d) are respectively microcosmic topography maps with different magnifications.
The region denoted by the reference numeral "1" in (c) and the region denoted by the reference numeral "2" in (d) of fig. 2 refer to Ti 2O3 occurrence regions.
Example 2
The andalusite refractory material comprises the following raw materials in parts by mass:
84.5 parts of andalusite, 14 parts of titanium dioxide, 1.5 parts of metal aluminum powder and 3.5 parts of phenolic resin binder.
Preparation of andalusite refractory material:
mixing the raw materials, uniformly mixing to obtain pug, pressing and forming to obtain a green body, drying until the water content is less than 1.5wt.%, and placing into a tunnel kiln, and preserving the temperature for 6 hours at 1500 ℃ in an argon atmosphere to obtain the andalusite refractory material containing Ti 2O3.
The product of the embodiment has the apparent porosity of 12.9%, the volume density of 2.92g/cm 3, the normal-temperature compressive strength (according to national standard GBT 5072-2008 test) of 219MPa and the thermal shock stability cycle number (1100 ℃ and water cooling) of more than or equal to 28 times.
Example 3
The andalusite refractory material comprises the following raw materials in parts by mass:
90 parts of andalusite, 9.3 parts of titanium dioxide, 1 part of metal aluminum powder and 3.5 parts of phenolic resin binder.
Preparation of andalusite refractory material:
Mixing the raw materials, uniformly mixing to obtain pug, pressing and forming to obtain a green body, drying until the water content is less than 1.5wt.%, and placing into a tunnel kiln, and preserving the temperature for 3 hours at 1700 ℃ in an argon atmosphere to obtain the andalusite refractory material containing Ti 2O3.
The product of the embodiment has the apparent porosity of 14.7%, the volume density of 2.90g/cm 3, the normal-temperature compressive strength (according to national standard GBT 5072-2008 test) of 221MPa and the thermal shock stability cycle number (1100 ℃ and water cooling) of more than or equal to 28 times.
Comparative example 1
The only difference from example 1 is that the addition of titanium pigment and metallic aluminum powder was omitted and the equal mass of andalusite was supplemented.
The product of the embodiment has the apparent porosity of 21.6%, the volume density of 2.61g/cm 3, the normal-temperature compressive strength (according to national standard GBT 5072-2008 test) of 112MPa and the thermal shock stability cycle number (1100 ℃ C., water cooling) of more than or equal to 25 times.
In comparative example 1, andalusite is used as a raw material, and mullite is formed along with larger volume expansion in the high-temperature sintering process; meanwhile, the mullite has no second phase for inhibiting the anisotropic growth of mullite crystals, the mullite grows in a long column shape, the densification is difficult, the volume density is low, and the apparent porosity is high.
Comparative example 2
The only difference from example 1 is that the addition of titanium dioxide was omitted and the equal mass of andalusite was replenished.
The product of the embodiment has the apparent porosity of 24.3%, the volume density of 2.31g/cm 3, the normal-temperature compressive strength (according to national standard GBT 5072-2008 test) of 67MPa and the thermal shock stability cycle number (1100 ℃ and water cooling) of more than or equal to 8.
Comparative example 3
The only difference from example 1 is that the addition of the metal aluminum powder was omitted and the andalusite of equal mass was replenished.
The product of the embodiment has the apparent porosity of 22.9%, the volume density of 2.23g/cm 3, the normal-temperature compressive strength (according to national standard GBT 5072-2008 test) of 53MPa and the thermal shock stability cycle number (1100 ℃ C., water cooling) of more than or equal to 7.
Comparative example 4
The andalusite refractory material comprises the following raw materials in parts by mass:
69 parts of andalusite, 8 parts of titanium dioxide, 23 parts of metal aluminum powder and 3.5 parts of phenolic resin binder.
The product of the embodiment has the apparent porosity of 19.8%, the volume density of 2.56g/cm 3, the normal-temperature compressive strength (according to national standard GBT 5072-2008 test) of 77MPa and the thermal shock stability cycle number (1100 ℃ and water cooling) of more than or equal to 9.
Comparative example 5
The difference from example 1 is only that titanium pigment is replaced with nano-sized titanium oxide powder of equal mass (average particle diameter 100 nm), and metal aluminum powder is replaced with alumina powder of equal mass (particle size 45 μm or less).
The product of the embodiment has the apparent porosity of 24.5%, the volume density of 2.67g/cm 3, the normal-temperature compressive strength (according to the national standard GBT 5072-2008 test) of 72MPa and the thermal shock stability cycle number (1100 ℃ and water cooling) of more than or equal to 10.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411141185.8A CN118930292B (en) | 2024-08-20 | 2024-08-20 | A Ti2O3-containing andalusite refractory material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411141185.8A CN118930292B (en) | 2024-08-20 | 2024-08-20 | A Ti2O3-containing andalusite refractory material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118930292A true CN118930292A (en) | 2024-11-12 |
| CN118930292B CN118930292B (en) | 2025-02-28 |
Family
ID=93358296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411141185.8A Active CN118930292B (en) | 2024-08-20 | 2024-08-20 | A Ti2O3-containing andalusite refractory material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118930292B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040009359A1 (en) * | 2000-10-31 | 2004-01-15 | Alger Donald L. | Alpha Al2O3 and Ti2O3 protective coatings on aluminide substrates |
| CN104003737A (en) * | 2014-05-27 | 2014-08-27 | 北京科技大学 | Sialon combined andalusite/SiC composite refractory and preparation method thereof |
| CN106145976A (en) * | 2016-07-04 | 2016-11-23 | 瑞泰科技股份有限公司 | Cement kiln andalusite mullite silicon carbide brick and preparation method thereof |
| CN108129142A (en) * | 2017-11-23 | 2018-06-08 | 宜兴瑞泰耐火材料有限公司 | A kind of dehydrogenating propane device refractory material and preparation method thereof |
-
2024
- 2024-08-20 CN CN202411141185.8A patent/CN118930292B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040009359A1 (en) * | 2000-10-31 | 2004-01-15 | Alger Donald L. | Alpha Al2O3 and Ti2O3 protective coatings on aluminide substrates |
| CN104003737A (en) * | 2014-05-27 | 2014-08-27 | 北京科技大学 | Sialon combined andalusite/SiC composite refractory and preparation method thereof |
| CN106145976A (en) * | 2016-07-04 | 2016-11-23 | 瑞泰科技股份有限公司 | Cement kiln andalusite mullite silicon carbide brick and preparation method thereof |
| CN108129142A (en) * | 2017-11-23 | 2018-06-08 | 宜兴瑞泰耐火材料有限公司 | A kind of dehydrogenating propane device refractory material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 豆志河等: "金属热还原法制备低氧高钛铁的基础研究", 《过程工程学报》, vol. 10, no. 6, 31 December 2010 (2010-12-31), pages 2 * |
| 郑清瑶等: "刚玉-Ti2O3共存物相在氧化气氛下的相变与形貌演变", 《硅酸盐学报》, vol. 51, no. 3, 31 March 2023 (2023-03-31), pages 590 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118930292B (en) | 2025-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101182193B (en) | A kind of preparation method of in-situ self-toughened alumina ceramics | |
| JPS5924751B2 (en) | Sintered shaped body | |
| US5447894A (en) | Sintered ceramic article formed mainly of alumina | |
| JPH0231031B2 (en) | ||
| JP2022532847A (en) | Rare earth tantalum acid ceramics that prevent corrosion due to low melting point oxides and their manufacturing methods | |
| Feng et al. | Effects of Cu on properties of vitrified bond and vitrified CBN composites | |
| CN113292346B (en) | Sintering promoting agent for preparing silica brick, composite silica brick and preparation method of composite silica brick | |
| Zygmuntowicz et al. | New Al2O3–Cu–Ni functionally graded composites manufactured using the centrifugal slip casting | |
| CN113563074A (en) | Two-phase calcium tantalate ceramic and preparation method thereof | |
| Li et al. | Comparison of rare earth oxides on properties of vitrified diamond composites | |
| CN113416073A (en) | Multi-phase tantalum/niobate composite ceramic and preparation method thereof | |
| CN113548891B (en) | Two-phase cobalt tantalate ceramic block and preparation method thereof | |
| JP6354621B2 (en) | Silicon nitride ceramic sintered body and method for producing the same | |
| CN106518119A (en) | A kind of dense Ti2AlC/Al2O3 fiber composite material and its preparation method | |
| Sardjono | The characterization of ceramic alumina prepared by using additive glass beads | |
| CN118930292B (en) | A Ti2O3-containing andalusite refractory material and preparation method thereof | |
| CN100519469C (en) | Method for preparing massive compact high-pure single-phase Y2SiO5 ceramic block material at low temperature | |
| CN114346921B (en) | Ceramic bond, preparation method thereof and ceramic bond grinding tool | |
| CN1286769C (en) | Preparation method of aluminium oxide base ceramic composite | |
| US3979214A (en) | Sintered alumina body | |
| CN118684507B (en) | A method for preparing corundum-mullite refractory material by adding fused quartz | |
| JP3661958B2 (en) | Refractory for casting | |
| CN116715530B (en) | A method for preparing spinel carbon material with low thermal expansion coefficient | |
| EP1044177A1 (en) | Dense refractories with improved thermal shock resistance | |
| Al-Jarsha et al. | Preparation, characterization and uses of mullite grain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |