CN104276832A - Novel magnesium/aluminum refractory material - Google Patents
Novel magnesium/aluminum refractory material Download PDFInfo
- Publication number
- CN104276832A CN104276832A CN201410505445.5A CN201410505445A CN104276832A CN 104276832 A CN104276832 A CN 104276832A CN 201410505445 A CN201410505445 A CN 201410505445A CN 104276832 A CN104276832 A CN 104276832A
- Authority
- CN
- China
- Prior art keywords
- mgo
- cao
- refractory material
- al2o3
- novel magnesium
- 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.)
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a refractory material, particularly a novel magnesium-aluminum refractory material. The chemical composition is composed of MgO, Al2O3, SiO2 and CaO. Magnesia alumina spinel (MA) generated by sintering the MgO and Al2O3 has higher melting point and favorable thermal shock stability; the SiO2 can react with the MgO, Al2O3 and the like in the matrix to increase the diffusion rate of Mg<2+> and Al<3+> into the melt; the generated spinel has fine and compact crystal grains; and the CaO can form high-melting-point aluminate with Al2O3, so that the slag in contact with the castable becomes high-melting-point high-viscosity slag. Therefore, the novel magnesium-aluminum refractory material has the advantages of high melting point, high strength, favorable slag resistance, favorable thermal shock resistance, long service life and excellent quality.
Description
Technical field
The present invention relates to a kind of refractory materials, especially a kind of Novel magnesium aluminum fire resistant materials.
Background technology
Traditional refractory materials through sintering clay brick and third-class high alumina brick, this refractory materials in use demonstrates poor spalling resistance and erosion resistance, and work-ing life is low.Steel-smelting technology is along with the maximization of equipment, high efficiency, continuous casting and develop continuous pursuit that is laborsaving, energy-conservation, that reduce unit consumption.Correspondingly, Refractory for Ladle also by using material, construction and repairing technique freely, will reduce unit consumption, but also will improve the work-ing life of Refractory for Ladle significantly.In addition, the requirement of people to steel quality is more and more higher, correspondingly will ensure the production of Clean Steel, just must improve the quality of Refractory for Ladle, reduces the foreign matter content in refractory materials.
Summary of the invention
The present invention is intended to solve the problem, and provide a kind of Novel magnesium aluminum fire resistant materials, its fusing point is high, good thermal shock stability, and work-ing life is longer, and its technical scheme adopted is as follows:
A kind of chemical constitution of Novel magnesium aluminum fire resistant materials is MgO, Al
2o
3, SiO
2, CaO, the mass percent of each component is: MgO 75%, Al
2o
322%, SiO
22%, CaO 1%; Described MgO is periclasite (M), is principal crystalline phase; Described Al
2o
3magnesium-aluminium spinel (MA) can be formed with MgO, main in conjunction with phase as periclasite (M); Described SiO
2, CaO is matrix.
Tool of the present invention has the following advantages: MgO and Al
2o
3sintering generate magnesium-aluminium spinel (MA) has compared with high fusing point, thermal expansion is little, thermal stresses is low, heat shakes good stability, SiO
2can with MgO, the Al in matrix
2o
3react Deng composition, accelerate Mg
2+, Al
3+to the rate of diffusion in melt, spinel generating rate is improved, the spinel crystal grain of generation is tiny and fine and close, simultaneously SiO
2facilitate Al
2o
3solid solution in spinel, forms aluminium riched spinel, and more effectively absorb the FeO infiltrated in slag, the compositions such as MnO, become composite spinelle, and the viscosity of slag is increased.CaO energy and Al in slag
2o
3form dystectic aluminate and make the slag contacted with mould material become high-melting-point, full-bodied slag.Therefore, it has high-melting-point, high strength, good anti-slag ability and shaking property of heat resistanceheat resistant, high life, is a kind of Novel magnesium aluminum fire resistant materials of excellent quality.
Embodiment
Below in conjunction with example, the invention will be further described:
A kind of chemical constitution of Novel magnesium aluminum fire resistant materials is MgO, Al
2o
3, SiO
2, CaO, the mass percent of each component is: MgO 75%, Al
2o
322%, SiO
22%, CaO 1%; Described MgO is periclasite (M), is principal crystalline phase; Described Al
2o
3magnesium-aluminium spinel (MA) can be formed with MgO, main in conjunction with phase as periclasite (M); Described SiO
2, CaO is matrix.
Describe the present invention by way of example above, but the invention is not restricted to above-mentioned specific embodiment, all any changes of doing based on the present invention or modification all belong to the scope of protection of present invention.
Claims (2)
1. a Novel magnesium aluminum fire resistant materials, is characterized in that: the chemical constitution of described refractory materials is MgO, Al
2o
3, SiO
2, CaO, the mass percent of each component is: MgO 75%, Al
2o
322%, SiO
22%, CaO 1%.
2. a kind of Novel magnesium aluminum fire resistant materials according to claim 1, it is characterized in that: described MgO is periclasite (M), is principal crystalline phase; Described Al
2o
3magnesium-aluminium spinel (MA) can be formed with MgO, main in conjunction with phase as periclasite (M); Described SiO
2, CaO is matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505445.5A CN104276832A (en) | 2014-09-28 | 2014-09-28 | Novel magnesium/aluminum refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505445.5A CN104276832A (en) | 2014-09-28 | 2014-09-28 | Novel magnesium/aluminum refractory material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104276832A true CN104276832A (en) | 2015-01-14 |
Family
ID=52252241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410505445.5A Pending CN104276832A (en) | 2014-09-28 | 2014-09-28 | Novel magnesium/aluminum refractory material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104276832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745134A (en) * | 2021-01-13 | 2021-05-04 | 营口四通高温新材料科技有限公司 | Air brick containing corundum ceramic balls and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047271A (en) * | 1989-05-19 | 1990-11-28 | 鲁有 | High-alumina Mg-Al spinel brick and production method thereof |
| CN1634796A (en) * | 2003-12-30 | 2005-07-06 | 郑州豫兴氮氧结合耐火材料有限公司 | Magnesia alumina spinel refractory ball |
-
2014
- 2014-09-28 CN CN201410505445.5A patent/CN104276832A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047271A (en) * | 1989-05-19 | 1990-11-28 | 鲁有 | High-alumina Mg-Al spinel brick and production method thereof |
| CN1634796A (en) * | 2003-12-30 | 2005-07-06 | 郑州豫兴氮氧结合耐火材料有限公司 | Magnesia alumina spinel refractory ball |
Non-Patent Citations (1)
| Title |
|---|
| 李晓娜: "铝灰制备镁铝尖晶石及其在Al2O3-MgAl2O4耐火材料中的应用", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745134A (en) * | 2021-01-13 | 2021-05-04 | 营口四通高温新材料科技有限公司 | Air brick containing corundum ceramic balls and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150114 |
|
| WD01 | Invention patent application deemed withdrawn after publication |