WO2003035574A1 - Materiau refractaire constitue de spinelle de chrome-aluminium - Google Patents
Materiau refractaire constitue de spinelle de chrome-aluminium Download PDFInfo
- Publication number
- WO2003035574A1 WO2003035574A1 PCT/CN2001/001484 CN0101484W WO03035574A1 WO 2003035574 A1 WO2003035574 A1 WO 2003035574A1 CN 0101484 W CN0101484 W CN 0101484W WO 03035574 A1 WO03035574 A1 WO 03035574A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- corundum
- chromite
- chrome
- refractory material
- aluminum spinel
- Prior art date
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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
- C04B35/01—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
-
- 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
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
Definitions
- the invention belongs to the field of refractory production, and particularly relates to a chrome-aluminum spinel refractory. Background technique
- the AL 2 0 3 as a main component and corundum in some industrial smelting furnace is widely used, which comprises a fused corundum, sintered corundum and various corundum.
- These corundum refractory materials have the advantages of high temperature resistance, corrosion resistance, high hardness, good abrasion resistance, strong impact resistance, high compressive strength at room temperature, and high softening temperature under load.
- AL 2 0 3 has a stable crystal structure and resistance to slag invasion. Stronger, its insulation and air tightness are better, and the refractory products made are very dense.
- the above-mentioned corundum refractories also have the following disadvantages. 1.
- the corundum refractories are The strength at high temperatures is rather low. 2. Compared with other refractory materials, corundum products have larger elastic modulus, so their thermal shock resistance is relatively poor. 3. At high temperature, AL 2 0 3 in the corundum forms a low melting point substance in the strong alkaline slag, and because of its high content of AL 2 0 3 , it will shrink at high temperature, and the alkaline slag is extremely easy to penetrate. As a result, a metamorphic layer is formed under temperature changes, so its resistance to alkaline slag erosion is poor.
- Aluminum complex chromium slag smelting output byproduct because of its rich AL 2 0 3 and Cr 2 0 3 is provided with a number of excellent properties so that the refractory, the refractory material having good high temperature chemical stability, The effect is better in acidic slag and neutral slag.
- the use of decomposition in alkaline and low alkaline slags results in the formation of low melting point materials, which has a reduced resistance to slag erosion and is not ideal in use.
- the density of aluminum chromium slag itself is not as good as that of corundum, and the compactness of its products is worse than that of corundum.
- aluminum chromium slag has worse thermal shock stability. It is often used in locations with temperature fluctuations and often has spalling and cracking.
- aluminum chromium slag is a by-product of smelting metal chromium, its resources are also greatly limited. Object of the invention
- the purpose of the present invention is to overcome the shortcomings of the above-mentioned refractory materials, to solve the problems existing in the use of the above-mentioned refractory materials, to improve the technical performance of refractories, and to expand the source of raw materials of chrome-aluminum refractories. Reduce production costs and provide a chrome-aluminum spinel refractory. After adding additional zirconium dioxide, the strength of the product is further increased, and the product's impermeability, corrosion resistance, and thermal shock resistance are improved. Technical solution of the present invention
- the invention is a material formula including (by weight percentage):
- the amount of binder used for the above materials is: 0.5 ⁇ 14% of the total weight of the above materials;
- corundum requires the composition of alumina:
- Chromite requires chromium trioxide as:
- the above-mentioned binding agents include organic binding agents and inorganic binding agents.
- an admixture of 0.5-8% of the total weight of the material composed of corundum and chromite can be added, and the admixture contains 85% of zirconium dioxide.
- Corundum and chromite that meet the requirements are magnetically treated separately, and then the required particle size is separately selected, and the mixture is mixed with the binder uniformly according to the above proportion, and it becomes a scattered chrome-aluminum spinel refractory material. After being shaped, dried, and then sintered at high temperature, the refractory material becomes a chromium-aluminum spinel molded product.
- the present invention uses corundum as the main component, and after adding chromite and a binder, and then through magnetic separation, particle size sieving, mixing and other manufacturing processes, it becomes a new chrome-aluminum spinel refractory material.
- Cr 2 0 3 in chromite and AL 2 0 3 in corundum generate material migration during high temperature sintering, which promotes the compactness of the bond between AL 2 0 3 and Cr 2 0 3 and forms a dense continuous Solid solution and high melting point compounds increase the viscosity of the liquid phase, allowing the slag to infiltrate only the shallow surface of the material, thereby reducing the phenomenon of structural spalling. Therefore, it has more obvious advantages than simple corundum and aluminum chromium slag. Increase It has resistance to slag erosion and impermeability.
- the alumina requires alumina in the example: AL 2 0 3 ⁇ 78% ; the chromite requires a chromium trioxide composition: Cr 2 0 3 ⁇ 35 ; additive contains 85% zirconium dioxide):
- Corundum with a composition that meets the requirements and a particle size of 0 to 15 mm, and chromite with a composition that meets the requirements and a particle size of 0 to 8 mm are subjected to magnetic separation treatment to remove the ferromagnetic substances therefrom;
- To screen out corundum and chromite of the required particle size take 200kg (20%) of corundum, 800kg (80%) of chromite, 140kg of organic binder resin (14% of the total weight of the material), mix and stir well It becomes a chrome-aluminum spinel refractory.
- Corundum with a composition that meets the requirements and a particle size of 0 to 15 mm, and chromite with a composition that meets the requirements and a particle size of 0 to 8 mm are subjected to magnetic separation treatment to remove the ferromagnetic substances therefrom;
- To screen out corundum and chromite of the required particle size take 980kg (98%) of corundum, 20kg (2%) of chromite, 5kg of organic binder paper paddle (5% of the total weight of the material), mix and stir Uniformity becomes the grid aluminum spinel refractories.
- corundum whose composition meets the requirements and has a particle size of 0 to 15 mm, and the chromite, which meets the requirements and has a particle size of 0 to 8 mm, are separately subjected to magnetic separation treatment to remove the ferromagnetic substances; According to the needs of screening, select corundum and chromite of the required particle size; take 550kg (55%) of corundum, 450kg (45%) of chromite, 65kg of inorganic binder boric acid (6.5% of the total weight of the material) After mixing, stir evenly to become chrome-aluminum spinel refractories.
- Corundum with a composition that meets the requirements and a particle size of 0 to 15 mm, and chromite with a composition that meets the requirements and a particle size of 0 to 8 mm are separately subjected to magnetic separation treatment to remove the ferromagnetic substances therefrom; Screening to select corundum and chromite of the required particle size; 800 kg (80%) of corundum, 200 kg (20%) of chromite, 90 kg of inorganic binder phosphoric acid or aluminum phosphate (total weight of material. Percentage 9% ) Mix and stir to become chrome-aluminum spinel refractories.
- Corundum with a composition that meets the requirements and a particle size of 0 to 15 mm, and chromite with a composition that meets the requirements and a particle size of 0 to 8 mm are separately magnetically treated, and then the dioxo zirconia with a particle size of 0 to 6 mm that meets the requirements , Respectively, to remove the ferromagnetic substances; then, according to the needs of the screening, the corundum, vermiculite and zirconium dioxide of the required particle size level were selected; 780 kg (78%) of corundum, 2Q0 kg of chromite (20 ° 20% (2%) of zirconium dioxide admixture, 90kg of phosphoric acid (9% of the total weight of the material) are mixed, and evenly mixed to become a chrome-aluminum-zirconium spinel refractory.
- chrome-aluminum spinel refractories After the above-mentioned chrome-aluminum spinel refractories are formed, dried, and then sintered at high temperature, various shaped products of chrome-aluminum spinel refractories can be obtained.
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- 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)
- Ceramic Products (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 00123211 CN1117045C (zh) | 2000-11-03 | 2000-11-03 | 一种铬铝尖晶石耐火材料 |
CN00123211.8 | 2000-11-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003035574A1 true WO2003035574A1 (fr) | 2003-05-01 |
Family
ID=4589676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2001/001484 WO2003035574A1 (fr) | 2000-11-03 | 2001-10-17 | Materiau refractaire constitue de spinelle de chrome-aluminium |
Country Status (2)
Country | Link |
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CN (1) | CN1117045C (zh) |
WO (1) | WO2003035574A1 (zh) |
Cited By (1)
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CN115650747A (zh) * | 2022-11-16 | 2023-01-31 | 鞍山钢铁冶金炉材科技有限公司 | 一种镁铁铝尖晶石质钢包包壁喷补料及其制备方法 |
Families Citing this family (13)
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CN100463879C (zh) * | 2004-06-04 | 2009-02-25 | 瑞泰科技股份有限公司 | 方镁石—镁铝尖晶石—锆酸镧(钙)复合耐火材料 |
CN101921127B (zh) * | 2010-08-30 | 2012-11-21 | 武汉钢铁(集团)公司 | 长寿命耐高温辐射管的制造方法 |
CN102030542B (zh) * | 2010-09-02 | 2013-03-06 | 吴江市液铸液压件铸造有限公司 | 一种用于修补铸造炉后炉的涂料 |
CN102030543B (zh) * | 2010-09-03 | 2013-03-06 | 吴江市液铸液压件铸造有限公司 | 一种铸造炉炉衬表面的修补涂料 |
CN102633511B (zh) * | 2012-04-09 | 2014-07-02 | 江苏诺明高温材料股份有限公司 | 一种铝‐尖晶石‐镁砂复合耐火材料及其制备方法和应用 |
CN102627463B (zh) * | 2012-04-09 | 2014-03-12 | 江苏诺明高温材料股份有限公司 | 一种铝‐尖晶石‐刚玉复合耐火材料及其制备方法和应用 |
CN102627465A (zh) * | 2012-04-19 | 2012-08-08 | 浙江自立股份有限公司 | 镁尖晶石砖及生产方法和用该砖制备rh炉环流管的方法 |
CN105036715B (zh) * | 2015-07-09 | 2017-12-12 | 山东大东联石油设备有限公司 | 一种铝铬质耐火材料及其制备方法 |
CN105669218A (zh) * | 2015-12-30 | 2016-06-15 | 宜兴市集创新材料科技有限公司 | 防腐高温浇注料 |
CN106242535A (zh) * | 2016-08-09 | 2016-12-21 | 上海华培动力科技有限公司 | 一种低压铸造和真空吸铸耐热合金升液管配方及其制备方法 |
CN107721447A (zh) * | 2017-11-29 | 2018-02-23 | 鲁山县方圆工程技术有限公司 | 镍铁电炉用铬铝尖晶石炭砖及其制备方法 |
CN111689780A (zh) * | 2020-06-04 | 2020-09-22 | 宁夏众城新能源科技有限公司 | 一种艾器逊密闭式电阻炉用耐火材料及其制备方法 |
CN112299826A (zh) * | 2020-10-27 | 2021-02-02 | 郑州荣盛窑炉耐火材料有限公司 | 一种氧化锌回转窑反应带用铝铬锆硅复合砖及制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1492612A (en) * | 1974-01-29 | 1977-11-23 | Steetley Minerals Ltd | Refractory materials |
JPS5845174A (ja) * | 1981-09-14 | 1983-03-16 | 川崎製鉄株式会社 | 耐火物及びそれを用いた加熱炉炉材の保護方法 |
SU1201251A1 (ru) * | 1983-04-15 | 1985-12-30 | Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Стекла | Каменное литье |
-
2000
- 2000-11-03 CN CN 00123211 patent/CN1117045C/zh not_active Expired - Lifetime
-
2001
- 2001-10-17 WO PCT/CN2001/001484 patent/WO2003035574A1/zh active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1492612A (en) * | 1974-01-29 | 1977-11-23 | Steetley Minerals Ltd | Refractory materials |
JPS5845174A (ja) * | 1981-09-14 | 1983-03-16 | 川崎製鉄株式会社 | 耐火物及びそれを用いた加熱炉炉材の保護方法 |
SU1201251A1 (ru) * | 1983-04-15 | 1985-12-30 | Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Стекла | Каменное литье |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115650747A (zh) * | 2022-11-16 | 2023-01-31 | 鞍山钢铁冶金炉材科技有限公司 | 一种镁铁铝尖晶石质钢包包壁喷补料及其制备方法 |
CN115650747B (zh) * | 2022-11-16 | 2023-12-15 | 鞍山钢铁冶金炉材科技有限公司 | 一种镁铁铝尖晶石质钢包包壁喷补料及其制备方法 |
Also Published As
Publication number | Publication date |
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CN1117045C (zh) | 2003-08-06 |
CN1351978A (zh) | 2002-06-05 |
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