CN104177107A - Micropore light-weight alumina refractory aggregate and preparation method thereof - Google Patents
Micropore light-weight alumina refractory aggregate and preparation method thereof Download PDFInfo
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- CN104177107A CN104177107A CN201410447797.XA CN201410447797A CN104177107A CN 104177107 A CN104177107 A CN 104177107A CN 201410447797 A CN201410447797 A CN 201410447797A CN 104177107 A CN104177107 A CN 104177107A
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Abstract
The invention relates to a micropore light-weight alumina refractory aggregate and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps of by adopting 70%-95% by weight of crude alumina materials, 5%-30% by weight of organic polymers and 0%-10% by weight of additives as raw materials, additionally adding water which accounts for 30%-60% by weight of the raw materials, and carrying out wet grinding for 1-5 hours by using a planet ball mill; then placing slurry subjected to the wet grinding into a mould, standing for 12-24 hours under the condition of room temperature, drying for 12-36 hours under the condition of 110-200 DEG C, and then preserving the heat for 1-8 hours under the condition of 1500-1700 DEG C to obtain the micropore light-weight alumina refractory aggregate. The preparation method disclosed by the invention is simple in process and low in cost; and the prepared micropore light-weight alumina refractory aggregate has the characteristics of high strength, low apparent porosity, high closed porosity, low volume density, low water absorption rate, small average pore diameter and low heat conductivity.
Description
Technical field
The invention belongs to alumina refractory aggregate technical field.Be specifically related to a kind of micropore light weight alumina refractory aggregate and preparation method thereof.
Background technology
Along with the develop rapidly of China's economy, the industry of high energy consumption, as iron and steel, cement, power industry etc. increase day by day to the demand of the energy, the contradiction that energy shortage and demand increase sharply.Lightweight refractory is used for substituting heavy refractory materials and constructs kiln, can reduce energy consumption, improves kiln safety coefficient and working efficiency, and this requires insulating refractory to have higher use temperature and the intensity of Geng Gao.Because aggregate accounts for 50 ~ 70% of total quality in lightening casting material, therefore lightening casting material overall performance is subject to the impact of aggregate performance larger.Traditional aglite exists that foreign matter content is high, use temperature is low (<1200 DEG C), pore is large, effect of heat insulation is not good enough and the shortcoming such as intensity is low.Artificial lightweight aggregate is as alumina hollow ball, Bubble zirconia etc., and this class material has advantages of use temperature high (usually above 1500 DEG C) and good heat-insulation effect, but because expensive being difficult to is widely used.
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.), though prepared porous corundum-mullite aggregate mean pore size is less, apparent porosity is up to 40%; Fang Yineng etc. utilize polymer in situ decomposition method to prepare a kind of light porous alumina aggregate (Yineng Fang, Huazhi Gu, Yunsheng Fen, et al. The preparation of high-strength and micropore lightweight bauxite aggregate by in-situ polymerization and decomposition. Advanced Materials Research, 2011,194-196:2135-2139.), though prepared aggregate volume density is low, apparent porosity is up to more than 50%.As from the foregoing, all there is the defect that apparent porosity is high, water-intake rate is large, intensity is low in the interior prepared light weight refractory aggregate of industry at present.
Summary of the invention
The present invention is intended to overcome prior art defect, and task is to provide a kind of technique simply and the low micropore light weight alumina refractory aggregate preparation method of cost; The micropore light weight alumina refractory aggregate intensity prepared by the method is high, apparent porosity is low, closed porosity is high, volume density is less, water-intake rate is low, mean pore size is little and thermal conductivity is lower.
For realizing above-mentioned task, the technical solution adopted in the present invention is: taking alumina raw material, the organic polymer of 5 ~ 30wt% and the additive of 0 ~ 10wt% of 70 ~ 95wt% as raw material, the water of additional described raw material 30 ~ 60wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1500 ~ 1700 DEG C of conditions, be incubated 1 ~ 8 hour, obtain micropore light weight alumina refractory aggregate.
Particle diameter≤the 1mm of described alumina raw material.
Described organic polymer is the one in sugar-containing hydrogel, calcium lignin sulphonate, starch, polyvinyl alcohol and dextrin, particle diameter <15 μ m.
Described additive is TiO
2, MgO, CaO, Mn
2o
3, Y
2o
3and Fe
2o
3in one, particle diameter <0.088mm.
The mill ball of described planetary ball mill is corundum ball, and ball material mass ratio is 3 ︰ 1.
Owing to adopting technique scheme, the present invention compared with prior art has following positively effect:
The present invention, taking alumina raw material as main raw material, by wet grinding slip-casting shaping process, reduces alumina particle particle diameter and organic polymer and additive is dispersed in slip, the demoulding, can directly burn till after dry, therefore technique is simple, cost is low.The present invention makes the alumina fine powder particle natural packing in moulding process after levigate, adds a small amount of admixture, and at high temperature acceleration of sintering speed makes crystal boundary rapid diffusion, and pore is enclosed in material; In sintering process, organic polymer leaves its original particle size and distribution after burning and losing.The present invention, by improving sintering temperature, makes material under the effect of sintering motivating force, and pore reduces gradually, and open pore seals gradually, and closed pore increases gradually.On the basis that the present invention combines at particle packing method and burnout substances addition method, add appropriate admixture acceleration of sintering speed, obtain the micropore light weight alumina refractory aggregate that intensity is high, apparent porosity is low, closed porosity is high, volume density is less, water-intake rate is low, mean pore size is little and thermal conductivity is lower.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 16%, mean pore size is 0.3 ~ 7 μ m.
Therefore, technique of the present invention is simple and cost is low, and prepared micropore light weight alumina refractory aggregate has the advantages that intensity is high, apparent porosity is low, closed porosity is high, volume density is less, water-intake rate is low, mean pore size is little and thermal conductivity is lower.
Embodiment
Below in conjunction with embodiment, the invention will be further described, not the restriction to protection domain:
For avoiding repetition, first raw material related this embodiment and processing parameter unification are described below, in embodiment, repeat no more:
Particle diameter≤the 1mm of described alumina raw material;
Particle diameter <15 μ m in described sugar-containing hydrogel, calcium lignin sulphonate, starch, polyvinyl alcohol and dextrin;
Described TiO
2, MgO, CaO, Mn
2o
3, Y
2o
3and Fe
2o
3particle diameter <0.088mm;
The mill ball of described planetary ball mill is corundum ball, and ball material mass ratio is 3 ︰ 1.
embodiment 1
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking alumina raw material, the organic polymer of 25 ~ 30wt% and the additive of 5 ~ 8wt% of 70 ~ 75wt% as raw material, the water of additional described raw material 50 ~ 60wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1650 ~ 1700 DEG C of conditions, be incubated 5 ~ 8 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is sugar-containing hydrogel; Additive is Fe
2o
3.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 10 ~ 16%, mean pore size is 2 ~ 7 μ m.
embodiment 2
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except following parameter, all the other are with embodiment 1.
In the present embodiment: organic polymer is calcium lignin sulphonate; Additive is Y
2o
3.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.6 ~ 3.1g/cm
3, apparent porosity is 10 ~ 16%, mean pore size is 2 ~ 7 μ m.
embodiment 3
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking the alumina raw material of 70 ~ 75wt% and the organic polymer of 25 ~ 30wt% as raw material, the water of additional described raw material 50 ~ 60wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1650 ~ 1700 DEG C of conditions, be incubated 5 ~ 8 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is starch.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 10 ~ 16%, mean pore size is 2 ~ 7 μ m.
embodiment 4
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except organic polymer is polyvinyl alcohol, all the other are with embodiment 3.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 10 ~ 16%, mean pore size is 2 ~ 7 μ m.
embodiment 5
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking alumina raw material, the organic polymer of 20 ~ 25wt% and the additive of 4 ~ 7wt% of 75 ~ 80wt% as raw material, the water of additional described raw material 45 ~ 55wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1600 ~ 1650 DEG C of conditions, be incubated 4 ~ 7 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is dextrin; Additive is MgO.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.6 ~ 3.1g/cm
3, apparent porosity is 9 ~ 15%, mean pore size is 0.3 ~ 3 μ m.
embodiment 6
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except following parameter, all the other are with embodiment 5.
In the present embodiment: organic polymer is sugar-containing hydrogel; Additive is TiO
2.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.6 ~ 3.1g/cm
3, apparent porosity is 9 ~ 16%, mean pore size is 0.3 ~ 3 μ m.
embodiment 7
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking the alumina raw material of 75 ~ 80wt% and the organic polymer of 20 ~ 25wt% as raw material, the water of additional described raw material 45 ~ 55wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1600 ~ 1650 DEG C of conditions, be incubated 4 ~ 7 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is calcium lignin sulphonate.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.0g/cm
3, apparent porosity is 9 ~ 15%, mean pore size is 0.3 ~ 7 μ m.
embodiment 8
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except organic polymer is starch, all the other are with embodiment 7.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.0g/cm
3, apparent porosity is 9 ~ 15%, mean pore size is 0.3 ~ 7 μ m.
embodiment 9
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking alumina raw material, the organic polymer of 15 ~ 20wt% and the additive of 3 ~ 6wt% of 80 ~ 85wt% as raw material, the water of additional described raw material 40 ~ 50wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1580 ~ 1630 DEG C of conditions, be incubated 3 ~ 6 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is polyvinyl alcohol; Additive is Mn
2o
3.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 12%, mean pore size is 0.3 ~ 1 μ m.
embodiment 10
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except following parameter, all the other are with embodiment 9.
In the present embodiment: organic polymer is dextrin; Additive is CaO.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 11%, mean pore size is 0.3 ~ 1 μ m.
embodiment 11
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking the alumina raw material of 80 ~ 85wt% and the organic polymer of 15 ~ 20wt% as raw material, the water of additional described raw material 40 ~ 50wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1580 ~ 1630 DEG C of conditions, be incubated 3 ~ 6 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is sugar-containing hydrogel.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 2.9g/cm
3, apparent porosity is 10 ~ 16%, mean pore size is 0.3 ~ 7 μ m.
embodiment 12
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except organic polymer is calcium lignin sulphonate, all the other are with embodiment 11.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 2.9g/cm
3, apparent porosity is 10 ~ 16%, mean pore size is 0.3 ~ 7 μ m.
embodiment 13
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking alumina raw material, the organic polymer of 10 ~ 15wt% and the additive of 2 ~ 5wt% of 85 ~ 90wt% as raw material, the water of additional described raw material 35 ~ 45wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1550 ~ 1600 DEG C of conditions, be incubated 2 ~ 5 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is starch; Additive is Fe
2o
3.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 8 ~ 14%, mean pore size is 0.3 ~ 1 μ m.
embodiment 14
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except following parameter, all the other are with embodiment 13.
In the present embodiment: organic polymer is polyvinyl alcohol; Additive is Y
2o
3.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.6 ~ 3.1g/cm
3, apparent porosity is 8 ~ 13%, mean pore size is 0.3 ~ 1 μ m.
embodiment 15
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking the alumina raw material of 85 ~ 90wt% and the organic polymer of 10 ~ 15wt% as raw material, the water of additional described raw material 35 ~ 45wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1550 ~ 1600 DEG C of conditions, be incubated 2 ~ 5 hours, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is dextrin.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 10%, mean pore size is 0.3 ~ 7 μ m.
embodiment 16
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except organic polymer is sugar-containing hydrogel, all the other are with embodiment 15.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 10%, mean pore size is 0.3 ~ 7 μ m.
embodiment 17
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking alumina raw material, the organic polymer of 5 ~ 10wt% and the additive of 1 ~ 4wt% of 90 ~ 95wt% as raw material, the water of additional described raw material 30 ~ 40wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1500 ~ 1550 DEG C of conditions, be incubated 1 ~ 4 hour, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is calcium lignin sulphonate; Additive is MgO.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 10%, mean pore size is 0.3 ~ 1 μ m.
embodiment 18
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except following parameter, all the other are with embodiment 17.
In the present embodiment: organic polymer is starch; Additive is TiO
2.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 10%, mean pore size is 0.3 ~ 1 μ m.
embodiment 19
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Taking the alumina raw material of 90 ~ 95wt% and the organic polymer of 5 ~ 10wt% as raw material, the water of additional described raw material 30 ~ 40wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1500 ~ 1550 DEG C of conditions, be incubated 1 ~ 4 hour, obtain micropore light weight alumina refractory aggregate.
In the present embodiment: organic polymer is polyvinyl alcohol.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 10%, mean pore size is 0.3 ~ 7 μ m.
embodiment 20
A kind of micropore light weight alumina refractory aggregate and preparation method thereof.Except organic polymer is dextrin, all the other are with embodiment 19.
The micropore light weight alumina refractory aggregate that the present invention is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 10%, mean pore size is 0.3 ~ 7 μ m.
This embodiment compared with prior art has following positively effect:
This embodiment is taking alumina raw material as main raw material, by wet grinding slip-casting shaping process, alumina particle particle diameter reduced and organic polymer and additive are dispersed in slip, the demoulding, can directly burn till after dry, therefore technique is simple, cost is low.This embodiment makes the alumina fine powder particle natural packing in moulding process after levigate, adds a small amount of admixture, and at high temperature acceleration of sintering speed makes crystal boundary rapid diffusion, and pore is enclosed in material; In sintering process, organic polymer leaves its original particle size and distribution after burning and losing.This embodiment, by improving sintering temperature, makes material under the effect of sintering motivating force, and pore reduces gradually, and open pore seals gradually, and closed pore increases gradually.On the basis that this embodiment combines at particle packing method and burnout substances addition method, add appropriate admixture acceleration of sintering speed, obtain the micropore light weight alumina refractory aggregate that intensity is high, apparent porosity is low, closed porosity is high, volume density is less, water-intake rate is low, mean pore size is little and thermal conductivity is lower.
The micropore light weight alumina refractory aggregate that this embodiment is prepared: volume density is 2.5 ~ 3.1g/cm
3, apparent porosity is 6 ~ 16%, mean pore size is 0.3 ~ 7 μ m.
Therefore, this embodiment technique is simple and cost is low, and prepared micropore light weight alumina refractory aggregate has the advantages that intensity is high, apparent porosity is low, closed porosity is high, volume density is less, water-intake rate is low, mean pore size is little and thermal conductivity is lower.
Claims (6)
1. the preparation method of a micropore light weight alumina refractory aggregate, it is characterized in that alumina raw material, the organic polymer of 5 ~ 30wt% and the additive of 0 ~ 10wt% taking 70 ~ 95wt% is as raw material, the water of additional described raw material 30 ~ 60wt%, with planetary ball mill wet-milling 1 ~ 5 hour; Again the slip after wet-milling is placed in to mould, under room temperature condition, places 12 ~ 24 hours, under 110 ~ 200 DEG C of conditions, be dried 12 ~ 36 hours, then under 1500 ~ 1700 DEG C of conditions, be incubated 1 ~ 8 hour, obtain micropore light weight alumina refractory aggregate.
2. the preparation method of micropore light weight alumina refractory aggregate according to claim 1, is characterized in that the particle diameter≤1mm of described alumina raw material.
3. the preparation method of micropore light weight alumina refractory aggregate according to claim 1, is characterized in that described organic polymer is the one in sugar-containing hydrogel, calcium lignin sulphonate, starch, polyvinyl alcohol and dextrin, particle diameter <15 μ m.
4. the preparation method of micropore light weight alumina refractory aggregate according to claim 1, is characterized in that described additive is TiO
2, MgO, CaO, Mn
2o
3, Y
2o
3and Fe
2o
3in one, particle diameter <0.088mm.
5. the preparation method of micropore light weight alumina refractory aggregate according to claim 1, the mill ball that it is characterized in that described planetary ball mill is corundum ball, ball material mass ratio is 3 ︰ 1.
6. a micropore light weight alumina refractory aggregate, is characterized in that described micropore light weight alumina refractory aggregate is according to the prepared micropore light weight alumina refractory aggregate of preparation method of the micropore light weight alumina refractory aggregate described in any one in 1 ~ 5 of claims.
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Cited By (7)
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| CN106431434A (en) * | 2016-09-22 | 2017-02-22 | 郑州大学 | Closed-pore bauxite based mullite material and preparing method thereof |
| CN106431371A (en) * | 2016-09-22 | 2017-02-22 | 郑州大学 | High-strength pore-closed mullite material and preparation method thereof |
| CN106431440A (en) * | 2016-10-17 | 2017-02-22 | 武汉科技大学 | Light-weight micro-closed-pore alumina refractory aggregate and preparation method thereof |
| CN107141016A (en) * | 2017-04-21 | 2017-09-08 | 吴迪 | A kind of preparation method of micropore impermeabilisation high-alumina brick |
| CN112279657A (en) * | 2020-10-05 | 2021-01-29 | 武汉科技大学 | Lightweight bauxite-based refractory brick and preparation method thereof |
| CN112321285A (en) * | 2020-10-05 | 2021-02-05 | 武汉科技大学 | Slag-corrosion-resistant light bauxite clinker and preparation method thereof |
| CN112341214A (en) * | 2020-10-05 | 2021-02-09 | 武汉科技大学 | Lightweight bauxite-based castable and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106431434A (en) * | 2016-09-22 | 2017-02-22 | 郑州大学 | Closed-pore bauxite based mullite material and preparing method thereof |
| CN106431371A (en) * | 2016-09-22 | 2017-02-22 | 郑州大学 | High-strength pore-closed mullite material and preparation method thereof |
| CN106431371B (en) * | 2016-09-22 | 2019-11-05 | 郑州大学 | A kind of high-strength closed pore mullite material and preparation method thereof |
| CN106431434B (en) * | 2016-09-22 | 2019-11-05 | 郑州大学 | A kind of obturator-type alumina base mullite material and preparation method thereof |
| CN106431440A (en) * | 2016-10-17 | 2017-02-22 | 武汉科技大学 | Light-weight micro-closed-pore alumina refractory aggregate and preparation method thereof |
| CN107141016A (en) * | 2017-04-21 | 2017-09-08 | 吴迪 | A kind of preparation method of micropore impermeabilisation high-alumina brick |
| CN112279657A (en) * | 2020-10-05 | 2021-01-29 | 武汉科技大学 | Lightweight bauxite-based refractory brick and preparation method thereof |
| CN112321285A (en) * | 2020-10-05 | 2021-02-05 | 武汉科技大学 | Slag-corrosion-resistant light bauxite clinker and preparation method thereof |
| CN112341214A (en) * | 2020-10-05 | 2021-02-09 | 武汉科技大学 | Lightweight bauxite-based castable and preparation method thereof |
| CN112341214B (en) * | 2020-10-05 | 2021-12-21 | 唐山顺江耐火材料有限公司 | Lightweight bauxite-based castable and preparation method thereof |
| CN112279657B (en) * | 2020-10-05 | 2022-02-01 | 武汉科技大学 | Lightweight bauxite-based refractory brick and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN104177107B (en) | 2016-03-30 |
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Denomination of invention: A kind of microporous lightweight bauxite refractory aggregate and its preparation method Effective date of registration: 20200910 Granted publication date: 20160330 Pledgee: Bank of China Limited by Share Ltd. Jiyuan branch Pledgor: HENAN BAUXITE CHINA Co.,Ltd. Registration number: Y2020980005948 |
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