CN104291843A - Magnesia-alumina (MA) spinel - Google Patents
Magnesia-alumina (MA) spinel Download PDFInfo
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- CN104291843A CN104291843A CN201410505133.4A CN201410505133A CN104291843A CN 104291843 A CN104291843 A CN 104291843A CN 201410505133 A CN201410505133 A CN 201410505133A CN 104291843 A CN104291843 A CN 104291843A
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- spinel
- good
- resistance
- magnesium
- magnesia
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Abstract
The invention relates to an inorganic non-metallic material, and in particular relates to magnesia-alumina (MA) spinel. The MA spinel comprises the following minerals: Al2O3, MgO, SiO2, CaO and Fe2O3. The MA spinel disclosed by the invention has a relatively high melting point, has good erosion resistance and abrasion resistance, is good in thermal shock resistance, strong in anti-stripping capacity and good in slag resistance, also has a relatively stable chemical property, has relatively strong resistivity to basic molten slags, is a core point for applying an aluminum-magnesium refractory material, and is one of key matters for prolonging the service life. Therefore, the MA spinel is of an inorganic non-metallic material for producing a refractory material with excellent quality.
Description
Technical field
The present invention relates to a kind of ceramic, especially a kind of magnesium-aluminium spinel.
Background technology
Magnesium-aluminium spinel (being called for short MA) is widely used on refractory materials, smelting iron and steel, cement rotary kiln and glass industry kiln, is the desirable feedstock of producing the refractory productss such as the thermal zone Mg-Al spinel brick of cement rotary kiln, ladle brick, Refractory Carstables for Ladles.Itself and periclasite (being called for short M) are mixed in proportion the refractory magnesia-alumina material made, and substantially increase the corrosion resistance of steel plate lining, and have good resistance to flaking as ladle liner.
Summary of the invention
The present invention has aimed to provide a kind of magnesium-aluminium spinel, and its resistive connection structure spalling is good, and corrosion resistance is strong, good thermal shock stability, and its technical scheme adopted is as follows:
A kind of magnesium-aluminium spinel, is characterized in that: its mineral composition is Al
2o
3, MgO, SiO
2, CaO, Fe
2o
3, the weight percent of each composition is respectively Al
2o
382.5%, MgO15.5%, SiO
20.41%, CaO1.26%, Fe
2o
30.33%; The apparent porosity of described magnesium-aluminium spinel is 0.9%, and volume density is 3.48g/cm3, refractoriness 2130 DEG C.
Tool of the present invention has the following advantages: magnesium-aluminium spinel, through multistage homogenizing process, forms through more than 1800 DEG C high temperature sinterings in ultra-high-temperature tunnel kiln, and volume density is large, and mineral facies content is high, and grain development is good, even structure, steady quality.Magnesium-aluminium spinel has compared with high fusing point, thermal expansion is little, thermal stresses is low, heat shakes good stability, and simultaneously it has good anti-erosion, anticorrosive, peel-ability strong, the performance characteristics such as slag resistance is good, abrasion resistance, good thermal shock stability, high temperature resistant.Therefore, it is a kind of ceramic producing excellent quality refractory materials.
Embodiment
Below in conjunction with example, the invention will be further described:
A kind of magnesium-aluminium spinel, is characterized in that: its mineral composition is Al
2o
3, MgO, SiO
2, CaO, Fe
2o
3, the weight percent of each composition is respectively Al
2o
382.5%, MgO15.5%, SiO
20.41%, CaO1.26%, Fe
2o
30.33%; The apparent porosity of described magnesium-aluminium spinel is 0.9%, and volume density is 3.48g/cm3, refractoriness 2130 DEG C.
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 magnesium-aluminium spinel, is characterized in that: its mineral composition is Al
2o
3, MgO, SiO
2, CaO, Fe
2o
3, the weight percent of each composition is respectively Al
2o
382.5%, MgO15.5%, SiO
20.41%, CaO1.26%, Fe
2o
30.33%.
2. a kind of magnesium-aluminium spinel according to claim 1, is characterized in that: the apparent porosity of described magnesium-aluminium spinel is 0.9%, and volume density is 3.48g/cm3, refractoriness 2130 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505133.4A CN104291843A (en) | 2014-09-28 | 2014-09-28 | Magnesia-alumina (MA) spinel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505133.4A CN104291843A (en) | 2014-09-28 | 2014-09-28 | Magnesia-alumina (MA) spinel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104291843A true CN104291843A (en) | 2015-01-21 |
Family
ID=52311836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410505133.4A Pending CN104291843A (en) | 2014-09-28 | 2014-09-28 | Magnesia-alumina (MA) spinel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104291843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111925204A (en) * | 2020-08-22 | 2020-11-13 | 郑州经纬科技实业有限公司 | Preparation method of magnesia-alumina spinel refractory material |
| CN114315382A (en) * | 2021-12-17 | 2022-04-12 | 北京金隅通达耐火技术有限公司 | Magnesia-alumina spinel prepared by hydrated magnesia-alumina brick electric melting and preparation method thereof |
-
2014
- 2014-09-28 CN CN201410505133.4A patent/CN104291843A/en active Pending
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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111925204A (en) * | 2020-08-22 | 2020-11-13 | 郑州经纬科技实业有限公司 | Preparation method of magnesia-alumina spinel refractory material |
| CN111925204B (en) * | 2020-08-22 | 2023-03-24 | 郑州经纬科技实业有限公司 | Preparation method of magnesia-alumina spinel refractory material |
| CN114315382A (en) * | 2021-12-17 | 2022-04-12 | 北京金隅通达耐火技术有限公司 | Magnesia-alumina spinel prepared by hydrated magnesia-alumina brick electric melting 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: 20150121 |
|
| WD01 | Invention patent application deemed withdrawn after publication |