CN104446543A - Lightweight micro closed cell magnesium-containing corundum refractory aggregate and preparation method thereof - Google Patents
Lightweight micro closed cell magnesium-containing corundum refractory aggregate and preparation method thereof Download PDFInfo
- Publication number
- CN104446543A CN104446543A CN201410688444.9A CN201410688444A CN104446543A CN 104446543 A CN104446543 A CN 104446543A CN 201410688444 A CN201410688444 A CN 201410688444A CN 104446543 A CN104446543 A CN 104446543A
- Authority
- CN
- China
- Prior art keywords
- micro
- magnesium
- lightweight
- closed pore
- preparation
- 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
Abstract
The invention relates to lightweight micro closed cell magnesium-containing corundum refractory aggregate and a preparation method of the refractory aggregate. The method comprises the steps of taking 80-95wt% of gamma-Al2O3 fine powder, 1-10wt% of nano alumina powder and 1-10wt% of magnesium oxide micropowder as raw materials, adding water accounting for 40-70wt% of the raw materials, mixing, wet-milling with a planet ball mill for 0.5-3h to form slurry, putting the slurry in a mold, placing under a room temperature condition for 12-24h, removing the mold, drying a demolded green body for 12-36h at 110-200 DEG C, and carrying out heat preservation for 1-8h at 1750-1900 DEG C to form the lightweight micro closed cell magnesium-containing corundum refractory aggregate. The prepared lightweight micro closed cell magnesium-containing corundum refractory aggregate has the characteristics of low apparent porosity, high closed porosity, lower volume density, small mean pore size, lower heat conductivity, and strong washout and slag erosion resistance.
Description
Technical field
The invention belongs to corundum fireproof aggregate technical field.Be specifically related to the micro-closed pore of a kind of lightweight containing magnesium corundum fireproof aggregate and preparation method thereof.
Background technology
Along with the development of the development of New Metallurgical Technique, particularly external refining and continuous casting technology, ladle carries more and more important metallurgical task, also proposes more strict requirement to lining material in the ladle.To the major demands of lining material in the ladle be at present: (1) light weight energy-saving, can effectively reduce ladle heat loss, the control for steel quality is significant; (2) long service life, inner lining material Spalling resistance energy and slag resistance need further lifting badly, and particularly the otherness of the smelting condition lower liner material slag resistance such as different slag system, steel grade is larger.Therefore, the lightweight of working lining refractory materials is the important research direction solved the problem.
Refractory aggregate lightweight realizes the light-weighted main path of working lining refractory materials.The light weight aggregate preparation method of current report mainly contains: the inorganics decomposition methods such as organic substance decomposing method, foam in place hole creating technology and oxyhydroxide.O. the people such as Lyckfeldt adopts starch as bonding agent and whipping agent (O. Lyckfeldt, J. M. F. Ferreira, Processing of porous ceramics by starch consolidation, J. Eur. Ceram. Soc. 18 (2) (1998) 131 – 140.), prepare porous alumina, though prepared aggregate volume density obviously reduces, however apparent porosity and aperture larger; S. the people such as J. Li adopts kaolinite as whipping agent (S. J. Li, N. Li, Effects of composition and temperature on porosity and pore size distribution of porous ceramics prepared from Al (OH)
3and kaolinite gangue, Ceram. Int. 33 (4) (2007) 551-556.), prepared porous corundum-mullite aggregate, prepared aggregate mean pore size is less, but apparent porosity is up to 40%; R. the people such as Salom oa utilizes decomposition in situ (the R. Salom oa of hydrotalcite, M.V. B asa, V.C. Pandolfellia, Porous alumina-spinel ceramics for high temperature applications, Ceram. Int. 37 (4) (2011) 1393-1399.), prepared porous corundum-spinel aggregate, prepared aggregate also cannot reach production requirement in apparent porosity and aperture.
In sum, all there is the defect that apparent porosity is high, mean pore size is large in light weight refractory aggregate prepared at present, when for lining material in the ladle, material slag resistance will be a greater impact, and be difficult to the requirement reaching actual industrial production.Micro-the closing of pore of light weight aggregate is the important channel effectively solved the problem.
Summary of the invention
The present invention is intended to overcome prior art defect, and object is to provide that a kind of apparent porosity is low, closed porosity is high, volume density is less, mean pore size is little, thermal conductivity is lower, resistance to erosion and the strong micro-closed pore of lightweight of slag-resistant erosional competency be containing magnesium corundum fireproof aggregate and preparation method thereof.
For realizing above-mentioned task, the technical solution adopted in the present invention is: with the γ-Al of 80 ~ 95wt%
2o
3the nano alumina powder of fine powder, 1 ~ 10wt% and the fine magnesium oxide micro-powder of 1 ~ 10wt% are raw material, the water of additional described raw material 40 ~ 70wt%, and mixing, with planetary ball mill wet-milling 0.5 ~ 3 hour, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 110 ~ 200 DEG C of conditions dry 12 ~ 36 hours, under 1750 ~ 1900 DEG C of conditions, be incubated 1 ~ 8 hour, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
Described γ-Al
2o
3the Al of fine powder
2o
3content >99wt%, particle diameter is 0.045 ~ 0.088mm.
The Al of described nano alumina powder
2o
3content >99wt%, median size is 20 ~ 50nm.
The content of MgO >99wt% of described fine magnesium oxide micro-powder, particle diameter D
50it is 2 ~ 7 μm.
The mill ball of described planetary ball mill is corundum ball.
Owing to adopting technique scheme, the present invention compared with prior art has following positively effect:
The nano alumina powder that the present invention introduces at high temperature can show superplasticity, under stress existent condition, this characteristic can make crystal boundary quick travel, the rate of migration of crystal boundary is greater than hole rate of migration, in sintering process, crystal boundary can be closed before hole is excluded, thus formed a large amount of closed pore.Because superplasticity needs competence exertion effect under the promotion of stress, the fine magnesium oxide micro-powder that the present invention introduces can react in-situ preparation spinel with aluminum oxide, along with certain volumetric expansion in reaction process, thus produces original position corresponding force.The existence of this original position corresponding force effectively can impel the superplastic performance of nano aluminium oxide, thus form a large amount of closed pore, meanwhile, along with the movement of crystal boundary, macroscopic void is split into Minute pores, thus reaches the object forming the micro-closed pore of lightweight and contain magnesium corundum fireproof aggregate.In addition, the In-suit spinel that the fine magnesium oxide micro-powder of introducing is formed in aggregate inside, when with slag contacts, can the component such as Fe, Mn effectively in solid solution slag, lifting aggregate slag resistance.
The micro-closed pore of lightweight prepared by the present invention contains magnesium corundum fireproof aggregate after testing: volume density is 2.8 ~ 3.15g/cm
3, apparent porosity is 2 ~ 10%, and mean pore size is 0.3 ~ 1 μm.
Therefore, containing magnesium corundum fireproof aggregate, the micro-closed pore of the lightweight prepared by the present invention has that apparent porosity is low, closed porosity is high, volume density is less, mean pore size is little, thermal conductivity is lower, resistance to erosion and the strong feature of slag-resistant erosional competency.
Embodiment
Below in conjunction with embodiment, the invention will be further described, the restriction not to protection domain:
For avoiding repetition, first by the raw material involved by this embodiment and processing parameter Unify legislation as follows, repeat no more in embodiment:
Described γ-Al
2o
3the Al of fine powder
2o
3content >99wt%, particle diameter is 0.045 ~ 0.088mm.
The Al of described nano alumina powder
2o
3content >99wt%, median size is 20 ~ 50nm.
The content of MgO >99wt% of described fine magnesium oxide micro-powder, particle diameter D
50it is 2 ~ 7 μm.
The mill ball of described planetary ball mill is corundum ball.
embodiment 1
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 92 ~ 95wt%
2o
3the nano alumina powder of fine powder, 1 ~ 4wt% and the fine magnesium oxide micro-powder of 1 ~ 4wt% are raw material, the water of additional described raw material 40 ~ 60wt%, and mixing, with planetary ball mill wet-milling 1.5 ~ 3 hours, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 110 ~ 160 DEG C of conditions dry 24 ~ 36 hours, under 1750 ~ 1850 DEG C of conditions, be incubated 5 ~ 8 hours, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 3.05 ~ 3.15g/cm
3; Apparent porosity is 5 ~ 9%; Mean pore size is 0.6 ~ 1 μm.
embodiment 2
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 92 ~ 95wt%
2o
3the nano alumina powder of fine powder, 1 ~ 4wt% and the fine magnesium oxide micro-powder of 1 ~ 4wt% are raw material, the water of additional described raw material 50 ~ 70wt%, and mixing, with planetary ball mill wet-milling 0.5 ~ 1.5 hour, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 150 ~ 200 DEG C of conditions dry 12 ~ 24 hours, under 1800 ~ 1900 DEG C of conditions, be incubated 1 ~ 5 hour, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 3.0 ~ 3.1g/cm
3; Apparent porosity is 6 ~ 10%; Mean pore size is 0.5 ~ 1 μm.
embodiment 3
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 88 ~ 92wt%
2o
3the nano alumina powder of fine powder, 3 ~ 6wt% and the fine magnesium oxide micro-powder of 3 ~ 6wt% are raw material, the water of additional described raw material 40 ~ 60wt%, and mixing, with planetary ball mill wet-milling 1.5 ~ 3 hours, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 110 ~ 160 DEG C of conditions dry 24 ~ 36 hours, under 1750 ~ 1850 DEG C of conditions, be incubated 5 ~ 8 hours, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 2.9 ~ 3.1g/cm
3; Apparent porosity is 5 ~ 7%; Mean pore size is 0.6 ~ 0.8 μm.
embodiment 4
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 88 ~ 92wt%
2o
3the nano alumina powder of fine powder, 3 ~ 6wt% and the fine magnesium oxide micro-powder of 3 ~ 6wt% are raw material, the water of additional described raw material 50 ~ 70wt%, and mixing, with planetary ball mill wet-milling 0.5 ~ 1.5 hour, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 150 ~ 200 DEG C of conditions dry 12 ~ 24 hours, under 1800 ~ 1900 DEG C of conditions, be incubated 1 ~ 5 hour, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 2.9 ~ 3.0g/cm
3; Apparent porosity is 6 ~ 8%; Mean pore size is 0.5 ~ 1 μm.
embodiment 5
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 84 ~ 88wt%
2o
3the nano alumina powder of fine powder, 6 ~ 8wt% and the fine magnesium oxide micro-powder of 6 ~ 8wt% are raw material, the water of additional described raw material 40 ~ 60wt%, and mixing, with planetary ball mill wet-milling 1.5 ~ 3 hours, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 110 ~ 160 DEG C of conditions dry 24 ~ 36 hours, under 1750 ~ 1850 DEG C of conditions, be incubated 5 ~ 8 hours, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 2.9 ~ 3.0g/cm
3; Apparent porosity is 4 ~ 6%; Mean pore size is 0.4 ~ 0.6 μm.
embodiment 6
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 84 ~ 88wt%
2o
3the nano alumina powder of fine powder, 6 ~ 8wt% and the fine magnesium oxide micro-powder of 6 ~ 8wt% are raw material, the water of additional described raw material 50 ~ 70wt%, and mixing, with planetary ball mill wet-milling 0.5 ~ 1.5 hour, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 150 ~ 200 DEG C of conditions dry 12 ~ 24 hours, under 1800 ~ 1900 DEG C of conditions, be incubated 1 ~ 5 hour, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 2.85 ~ 2.95g/cm
3; Apparent porosity is 5 ~ 7%; Mean pore size is 0.5 ~ 0.7 μm.
embodiment 7
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 80 ~ 84wt%
2o
3the nano alumina powder of fine powder, 7 ~ 10wt% and the fine magnesium oxide micro-powder of 7 ~ 10wt% are raw material, the water of additional described raw material 40 ~ 60wt%, and mixing, with planetary ball mill wet-milling 1.5 ~ 3 hours, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 110 ~ 160 DEG C of conditions dry 24 ~ 36 hours, under 1750 ~ 1850 DEG C of conditions, be incubated 5 ~ 8 hours, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 2.8 ~ 2.9g/cm
3; Apparent porosity is 2 ~ 4%; Mean pore size is 0.3 ~ 0.6 μm.
embodiment 8
The micro-closed pore of a kind of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof.With the γ-Al of 80 ~ 84wt%
2o
3the nano alumina powder of fine powder, 7 ~ 10wt% and the fine magnesium oxide micro-powder of 7 ~ 10wt% are raw material, the water of additional described raw material 50 ~ 70wt%, and mixing, with planetary ball mill wet-milling 0.5 ~ 1.5 hour, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 150 ~ 200 DEG C of conditions dry 12 ~ 24 hours, under 1800 ~ 1900 DEG C of conditions, be incubated 1 ~ 5 hour, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
The micro-closed pore of lightweight prepared by the present embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 2.8 ~ 2.95g/cm
3; Apparent porosity is 3 ~ 5%; Mean pore size is 0.3 ~ 0.6 μm.
This embodiment compared with prior art has following positively effect:
The nano alumina powder that this embodiment is introduced at high temperature can show superplasticity, under stress existent condition, this characteristic can make crystal boundary quick travel, the rate of migration of crystal boundary is greater than hole rate of migration, in sintering process, crystal boundary can be closed before hole is excluded, thus formed a large amount of closed pore.Because superplasticity needs competence exertion effect under the promotion of stress, the fine magnesium oxide micro-powder that this embodiment is introduced can react in-situ preparation spinel with aluminum oxide, along with certain volumetric expansion in reaction process, thus produces original position corresponding force.The existence of this original position corresponding force effectively can impel the superplastic performance of nano aluminium oxide, thus form a large amount of closed pore, meanwhile, along with the movement of crystal boundary, macroscopic void is split into Minute pores, thus reaches the object forming the micro-closed pore of lightweight and contain magnesium corundum fireproof aggregate.In addition, the In-suit spinel that the fine magnesium oxide micro-powder of introducing is formed in aggregate inside, when with slag contacts, can the component such as Fe, Mn effectively in solid solution slag, lifting aggregate slag resistance.
The micro-closed pore of lightweight prepared by this embodiment contains magnesium corundum fireproof aggregate after testing: volume density is 2.8 ~ 3.15g/cm
3, apparent porosity is 2 ~ 10%, and mean pore size is 0.3 ~ 1 μm.
Therefore, containing magnesium corundum fireproof aggregate, the micro-closed pore of the lightweight prepared by this embodiment has that apparent porosity is low, closed porosity is high, volume density is less, mean pore size is little, thermal conductivity is lower, resistance to erosion and the strong feature of slag-resistant erosional competency.
Claims (6)
1. the micro-closed pore of lightweight is containing a preparation method for magnesium corundum fireproof aggregate, it is characterized in that the γ-Al with 80 ~ 95wt%
2o
3the nano alumina powder of fine powder, 1 ~ 10wt% and the fine magnesium oxide micro-powder of 1 ~ 10wt% are raw material, the water of additional described raw material 40 ~ 70wt%, and mixing, with planetary ball mill wet-milling 0.5 ~ 3 hour, obtains slip; Again described slip is placed in mould, places 12 ~ 24 hours under room temperature condition, the demoulding; Then by the base substrate after the demoulding under 110 ~ 200 DEG C of conditions dry 12 ~ 36 hours, under 1750 ~ 1900 DEG C of conditions, be incubated 1 ~ 8 hour, obtain the micro-closed pore of lightweight containing magnesium corundum fireproof aggregate.
2. the micro-closed pore of lightweight according to claim 1 is containing the preparation method of magnesium corundum fireproof aggregate, it is characterized in that described γ-Al
2o
3the Al of fine powder
2o
3content >99wt%, particle diameter is 0.045 ~ 0.088mm.
3. the micro-closed pore of lightweight according to claim 1 is containing the preparation method of magnesium corundum fireproof aggregate, it is characterized in that the Al of described nano alumina powder
2o
3content >99wt%, median size is 20 ~ 50nm.
4. the micro-closed pore of lightweight according to claim 1 is containing the preparation method of magnesium corundum fireproof aggregate, it is characterized in that the content of MgO >99wt% of described fine magnesium oxide micro-powder, particle diameter D
50it is 2 ~ 7 μm.
5. the micro-closed pore of lightweight according to claim 1 is containing the preparation method of magnesium corundum fireproof aggregate, it is characterized in that the mill ball of described planetary ball mill is corundum ball.
6. the micro-closed pore of lightweight is containing a magnesium corundum fireproof aggregate, it is characterized in that the micro-closed pore of described lightweight is that lightweight micro-closed pore preparation method prepared by of the micro-closed pore of lightweight according to any one of claims 1 ~ 5 containing magnesium corundum fireproof aggregate is containing magnesium corundum fireproof aggregate containing magnesium corundum fireproof aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688444.9A CN104446543B (en) | 2014-11-26 | 2014-11-26 | A kind of micro-closed pore of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410688444.9A CN104446543B (en) | 2014-11-26 | 2014-11-26 | A kind of micro-closed pore of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104446543A true CN104446543A (en) | 2015-03-25 |
| CN104446543B CN104446543B (en) | 2016-08-17 |
Family
ID=52893389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410688444.9A Active CN104446543B (en) | 2014-11-26 | 2014-11-26 | A kind of micro-closed pore of lightweight is containing magnesium corundum fireproof aggregate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104446543B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944996A (en) * | 2015-07-24 | 2015-09-30 | 武汉科技大学 | Light-weight composite corundum refractory aggregate, and preparation method for light-weight composite corundum refractory aggregate |
| CN105060908A (en) * | 2015-08-20 | 2015-11-18 | 武汉科技大学 | Corundum-spinel castable for steel ladle and preparing method thereof |
| CN105060901A (en) * | 2015-07-24 | 2015-11-18 | 武汉科技大学 | Light-weight corundum refractory aggregate and preparation method thereof |
| CN105237014A (en) * | 2015-11-06 | 2016-01-13 | 武汉科技大学 | Light slightly-closed hole corundum complex-phase refractory material and preparation method thereof |
| CN106587956A (en) * | 2016-11-24 | 2017-04-26 | 武汉科技大学 | Nano-crystalline inner-hole lightweight corundum complex-phase refractory aggregate and preparation method thereof |
| CN106746813A (en) * | 2016-12-16 | 2017-05-31 | 济南大学 | A kind of hollow light skeletal material and preparation method thereof |
| CN108409308A (en) * | 2018-04-18 | 2018-08-17 | 武汉科技大学 | A kind of gradient composition micropore corundum-spinel material and preparation method thereof |
| CN116496101A (en) * | 2023-04-24 | 2023-07-28 | 武汉科技大学 | Low-heat-conductivity micro-closed cell aluminum-rich spinel material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833383A (en) * | 2012-11-26 | 2014-06-04 | 东北大学 | Corundum-magnesium aluminum spinelle-textured refractory aggregate with closed-hole structure and preparation method of refractory aggregate |
-
2014
- 2014-11-26 CN CN201410688444.9A patent/CN104446543B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833383A (en) * | 2012-11-26 | 2014-06-04 | 东北大学 | Corundum-magnesium aluminum spinelle-textured refractory aggregate with closed-hole structure and preparation method of refractory aggregate |
Non-Patent Citations (1)
| Title |
|---|
| 朱伯铨等: "刚玉质微孔耐火材料的制备及性能", 《硅酸盐学报》, vol. 41, no. 3, 31 March 2013 (2013-03-31) * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944996A (en) * | 2015-07-24 | 2015-09-30 | 武汉科技大学 | Light-weight composite corundum refractory aggregate, and preparation method for light-weight composite corundum refractory aggregate |
| CN105060901A (en) * | 2015-07-24 | 2015-11-18 | 武汉科技大学 | Light-weight corundum refractory aggregate and preparation method thereof |
| CN105060908A (en) * | 2015-08-20 | 2015-11-18 | 武汉科技大学 | Corundum-spinel castable for steel ladle and preparing method thereof |
| US20180319710A1 (en) * | 2015-11-06 | 2018-11-08 | Wuhan University Of Science And Technology | Lightweight micro-closed-pore alumina composite refractory material and method preparing same |
| WO2017075865A1 (en) * | 2015-11-06 | 2017-05-11 | 武汉科技大学 | Lightweight slightly-closed-pore corundum composite refractory material and method for preparing same |
| CN105237014A (en) * | 2015-11-06 | 2016-01-13 | 武汉科技大学 | Light slightly-closed hole corundum complex-phase refractory material and preparation method thereof |
| US10519065B2 (en) | 2015-11-06 | 2019-12-31 | Wuhan University Of Science And Technology | Lightweight micro-closed-pore corundum composite refractory, method for preparing the same |
| CN106587956A (en) * | 2016-11-24 | 2017-04-26 | 武汉科技大学 | Nano-crystalline inner-hole lightweight corundum complex-phase refractory aggregate and preparation method thereof |
| CN106587956B (en) * | 2016-11-24 | 2019-12-10 | 武汉科技大学 | Nanocrystalline inner-hole light-weight corundum complex-phase refractory aggregate and preparation method thereof |
| CN106746813A (en) * | 2016-12-16 | 2017-05-31 | 济南大学 | A kind of hollow light skeletal material and preparation method thereof |
| CN106746813B (en) * | 2016-12-16 | 2018-07-27 | 济南大学 | A kind of hollow light skeletal material and preparation method thereof |
| CN108409308A (en) * | 2018-04-18 | 2018-08-17 | 武汉科技大学 | A kind of gradient composition micropore corundum-spinel material and preparation method thereof |
| CN108409308B (en) * | 2018-04-18 | 2021-06-04 | 武汉科技大学 | Gradient composition microporous corundum-spinel material and preparation method thereof |
| CN116496101A (en) * | 2023-04-24 | 2023-07-28 | 武汉科技大学 | Low-heat-conductivity micro-closed cell aluminum-rich spinel material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104446543B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104446543A (en) | Lightweight micro closed cell magnesium-containing corundum refractory aggregate and preparation method thereof | |
| CN104177099A (en) | Micro closed-cell light-weight corundum refractory aggregate and preparation method thereof | |
| CN105237014B (en) | A kind of micro- closed pore corundum multiple phase refractory material of lightweight and preparation method thereof | |
| CN101508587B (en) | Corundum-spinel pouring material containing nano-magnesium carbonate | |
| CN103979992B (en) | Ladle porous brick and preparation method thereof | |
| CN107311679A (en) | A kind of lightweight corundum magnesium aluminum spinel pouring material and preparation method thereof | |
| Liang et al. | Preparation of SiC reticulated porous ceramics with high strength and increased efficient filtration via fly ash addition | |
| CN104211420A (en) | Light-weight aluminum-magnesium casting material and preparation method thereof | |
| CN106542843B (en) | A method of light heat-insulation wall material is prepared using solid waste | |
| CN105585314A (en) | Dense calcium hexaluminate grog refractory and preparation method thereof | |
| CN102807379A (en) | Nano dolomite-containing corundum spinel castable | |
| CN107602099B (en) | Low-carbon sliding plate brick containing modified graphite for pushing off slag of converter and preparation method thereof | |
| CN104446390A (en) | Preparation method for magnetism-containing modified corundum composite material | |
| CN102976785A (en) | Light Al2O3-SiC-C refractory brick and preparation method thereof | |
| CN102659426A (en) | Micro-porous high-strength anti-corrosion corundum refractory aggregate and preparation method thereof | |
| CN106631072B (en) | A kind of functionally gradient material (FGM) and preparation method thereof for castable | |
| Liu et al. | Preparation and characterization of ceramic substrate from tungsten mine tailings | |
| CN110511038B (en) | Preparation method of high-compressive-strength foamed ceramic | |
| CN103896615B (en) | Aluminum-magnesium casting material for ladle liner and preparation method thereof | |
| CN106631052A (en) | Micropowder castable for working layer of ladle bottom impact zone | |
| CN104944996A (en) | Light-weight composite corundum refractory aggregate, and preparation method for light-weight composite corundum refractory aggregate | |
| CN102603341B (en) | Fusion cast corundum-spinel brick for side wall of aluminum electrolytic bath and preparation method of fusion cast corundum-spinel brick | |
| CN108840690A (en) | A kind of micro-nano hierarchical porous structure magnesium aluminate spinel and preparation method thereof | |
| CN107445632A (en) | Lightweight periclase forsterite refractory and preparation method thereof | |
| CN112897994A (en) | Preparation method of corundum spinel complex phase material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20150325 Assignee: Wuhan University of science and Technology Business Incubator Co.,Ltd. Assignor: WUHAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2020420000003 Denomination of invention: A kind of lightweight micro closed cell magnesium containing corundum refractory aggregate and its preparation method Granted publication date: 20160817 License type: Common License Record date: 20201021 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Wuhan University of science and Technology Business Incubator Co.,Ltd. Assignor: WUHAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2020420000003 Date of cancellation: 20230505 |
|
| EC01 | Cancellation of recordation of patent licensing contract |