CN105218113A - A kind of silicasol-combined corundum matter mould material and preparation method thereof - Google Patents
A kind of silicasol-combined corundum matter mould material and preparation method thereof Download PDFInfo
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- CN105218113A CN105218113A CN201510619790.6A CN201510619790A CN105218113A CN 105218113 A CN105218113 A CN 105218113A CN 201510619790 A CN201510619790 A CN 201510619790A CN 105218113 A CN105218113 A CN 105218113A
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Abstract
The present invention relates to a kind of silicasol-combined corundum matter mould material and preparation method thereof.Its technical scheme is: with the α-Al of the white fused alumina fine powder of the white fused alumina particle of the Brown Alundum particle of 2 ~ 14wt%, 40 ~ 76wt%, 10 ~ 40wt%, 1 ~ 10wt%
2o
3the fine silica powder of micro mist and 1 ~ 10wt% is raw material, is dry mixed 1 ~ 2min; The silicon sol of additional described raw material 5 ~ 15wt%, mixing 1 ~ 2min, then the silane coupling agent of additional described silicon sol 0.2 ~ 4wt%, mixing 1 ~ 2min, obtains silicasol-combined corundum matter mould material.The Al of described white fused alumina particle
2o
3content>=95wt%; The grain composition of white fused alumina is: particle diameter is less than 3mm and is more than or equal to 1mm is 25 ~ 45wt%, and particle diameter is less than 1mm and is more than or equal to 0.088mm is 55 ~ 75wt%.Preparation method of the present invention is simple, be convenient to the demoulding and to equipment without particular requirement; It is high and be convenient to the feature of transporting that prepared silicasol-combined corundum matter mould material has good flowing properties, early strength.
Description
Technical field
The invention belongs to corundum pouring material technical field.Be specifically related to a kind of silicasol-combined corundum matter mould material and preparation method thereof.
Background technology
Silicon sol is the solution that silica colloidal particles is dispersed in water formation, the mould material adopting silicon sol to combine has obvious advantage relative to Hydraulic binding pouring fireproof material in drying property, cooking performance, sintering character, volume stability and hot strength etc., and be progressively subject to the attention of scientific research personnel, in mould material, obtain practical application.
But the corundum pouring material that silicon sol combines is from the demoulding to oven dry, its intensity is general lower, also early stage low strength is just meaned, cause the inconvenience of mould material from the demoulding, transport, production and construction, material damage comparatively seriously can not normally use, add the production cycle, waste human and material resources and financial resources.Therefore the raising of early strength is most important.
The method of current raising early strength mostly adopts setting accelerator, selected setting accelerator basic oxide, oxyhydroxide and salt etc. that normally aluminium, magnesium and calcium etc. are corresponding, realize the raising of early strength by gelation process or flocculation process after setting accelerator adds.But solidification rate is accelerated in the membership that adds of setting accelerator, causes flowing property to reduce, makes troubles to construction.Also have and use aluminous cement as setting accelerator, but when containing fine silica powder in raw material, the introducing of aluminous cement can cause mould material at high temperature easily to form low-melting-point material phase, and intensity reduction is unfavorable for using.
Summary of the invention
The present invention is intended to overcome prior art defect, and it is simple and be convenient to the preparation method of silicasol-combined corundum matter mould material of the demoulding that object is to provide a kind of technique, the silicasol-combined corundum matter mould material good flowing properties prepared by the method and early strength high.
For achieving the above object, the technical solution used in the present invention is: with the α-Al of the white fused alumina fine powder of the white fused alumina particle of the Brown Alundum particle of 2 ~ 14wt%, 40 ~ 76wt%, 10 ~ 40wt%, 1 ~ 10wt%
2o
3the fine silica powder of micro mist and 1 ~ 10wt% is raw material, is dry mixed 1 ~ 2min; The silicon sol of additional described raw material 5 ~ 15wt%, mixing 1 ~ 2min, then the silane coupling agent of additional described silicon sol 0.2 ~ 4wt%, mixing 1 ~ 2min, obtains silicasol-combined corundum matter mould material.
The Al of described white fused alumina particle
2o
3content>=95wt%; The grain composition of white fused alumina is: particle diameter is less than 3mm and is more than or equal to 1mm is 25 ~ 45wt%, and particle diameter is less than 1mm and is more than or equal to 0.088mm is 55 ~ 75wt%.
The Al of described Brown Alundum particle
2o
3content>=95wt%, particle diameter is 5 ~ 3mm.
The Al of described white fused alumina fine powder
2o
3content>=98wt%, particle diameter≤0.088mm.
Described α-Al
2o
3the Al of micro mist
2o
3content>=98wt%, particle diameter≤3 μm.
The SiO of described fine silica powder
2content>=98wt%, particle diameter≤3 μm.
The SiO of described silicon sol
2content is 25 ~ 40%, Na
2o content≤0.3%; Median size 10 ~ the 20nm of described silicon sol, pH value is 8.5 ~ 10.
Described silane coupling agent is γ-methacryloxypropyl trimethoxy silane or is γ-glycidyl ether oxygen propyl trimethoxy silicane.
Owing to adopting technique scheme, the present invention compared with prior art has following positively effect:
The present invention carries out in-situ modified by introducing silane coupling agent to silicon sol, silane coupling agent hydrolysate and silicon sol carry out chemical reaction, form the hybrid structure of organic/inorganic, good flowing properties, accelerate the formation of silicon sol network structure, be convenient to the demoulding, early strength is high, production technique is simple, decreases the damage of material in transport and use procedure.
Corundum pouring material prepared by the present invention, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 3.5 ~ 8MPa, 6 ~ 12MPa, and intensity is significantly improved.
Preparation method of the present invention is simple, be convenient to the demoulding and to equipment without particular requirement; It is high and be convenient to the feature of transporting that prepared corundum pouring material has good flowing properties, early strength.
Embodiment
Below in conjunction with embodiment, the invention will be further described, the restriction not to its protection domain.
For avoiding repetition, the raw material Unify legislation first by involved in this embodiment is as follows, repeats no more in embodiment:
The Al of described white fused alumina particle
2o
3content>=95wt%; The grain composition of white fused alumina is: particle diameter is less than 3mm and is more than or equal to 1mm is 25 ~ 45wt%, and particle diameter is less than 1mm and is more than or equal to 0.088mm is 55 ~ 75wt%.
The Al of described Brown Alundum particle
2o
3content>=95wt%, particle diameter is 5 ~ 3mm.
The Al of described white fused alumina fine powder
2o
3content>=98wt%, particle diameter≤0.088mm.
Described α-Al
2o
3the Al of micro mist
2o
3content>=98wt%, particle diameter≤3 μm.
The SiO of described fine silica powder
2content>=98wt%, particle diameter≤3 μm.
The SiO of described silicon sol
2content is 25 ~ 40%, Na
2o content≤0.3%; Median size 10 ~ the 20nm of described silicon sol, pH value is 8.5 ~ 10.
embodiment 1
A kind of silicasol-combined corundum matter mould material and preparation method thereof.With the α-Al of the white fused alumina fine powder of the white fused alumina particle of the Brown Alundum particle of 2 ~ 6wt%, 64 ~ 76wt%, 10 ~ 20wt%, 7 ~ 10wt%
2o
3micro mist and the fine silica powder of 4 ~ 7wt% be raw material, be dry mixed 1 ~ 2min; The silicon sol of additional described raw material 5 ~ 8wt%, mixing 1 ~ 2min, then the silane coupling agent of additional described silicon sol 0.2 ~ 1.5wt%, mixing 1 ~ 2min, obtains silicasol-combined corundum matter mould material.
Silane coupling agent described in the present embodiment is γ-methacryloxypropyl trimethoxy silane.
Silicasol-combined corundum matter mould material prepared by the present embodiment, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 3.5 ~ 6MPa, 6 ~ 10MPa.
embodiment 2
A kind of silicasol-combined corundum matter mould material and preparation method thereof.With the α-Al of the white fused alumina fine powder of the white fused alumina particle of the Brown Alundum particle of 6 ~ 10wt%, 52 ~ 64wt%, 20 ~ 30wt%, 4 ~ 7wt%
2o
3the fine silica powder of micro mist, 1 ~ 4wt% is raw material, is dry mixed 1 ~ 2min; The silicon sol of additional described raw material 8 ~ 11wt%, mixing 1 ~ 2min, then the silane coupling agent of additional described silicon sol 1.5 ~ 2.8wt%, mixing 1 ~ 2min, obtains silicasol-combined corundum matter mould material.
Silane coupling agent described in the present embodiment is γ-methacryloxypropyl trimethoxy silane.
Silicasol-combined corundum matter mould material prepared by the present embodiment, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 4 ~ 7MPa, 7 ~ 12MPa.
embodiment 3
A kind of silicasol-combined corundum matter mould material and preparation method thereof.With the α-Al of the white fused alumina fine powder of the white fused alumina particle of the Brown Alundum particle of 10 ~ 14wt%, 40 ~ 52wt%, 30 ~ 40wt%, 1 ~ 4wt%
2o
3the fine silica powder of micro mist, 7 ~ 10wt% is raw material, is dry mixed 1 ~ 2min; The silicon sol of additional described raw material 11 ~ 15wt%, mixing 1 ~ 2min, then the silane coupling agent of additional described silicon sol 2.8 ~ 4wt%, mixing 1 ~ 2min, obtains silicasol-combined corundum matter mould material.
Silane coupling agent described in the present embodiment is γ-methacryloxypropyl trimethoxy silane.
Silicasol-combined corundum matter mould material prepared by the present embodiment, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 4 ~ 8MPa, 6 ~ 11MPa.
embodiment 4
A kind of silicasol-combined corundum matter mould material and preparation method thereof.Except described silane coupling agent is γ-glycidyl ether oxygen propyl trimethoxy silicane, all the other are with embodiment 1.
Silicasol-combined corundum matter mould material prepared by the present embodiment, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 3.5 ~ 5.5MPa, 6 ~ 8MPa.
embodiment 5
A kind of silicasol-combined corundum matter mould material and preparation method thereof.Except described silane coupling agent is γ-glycidyl ether oxygen propyl trimethoxy silicane, all the other are with embodiment 2.
Silicasol-combined corundum matter mould material prepared by the present embodiment, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 4 ~ 6MPa, 7 ~ 11MP.
embodiment 6
A kind of silicasol-combined corundum matter mould material and preparation method thereof.Except described silane coupling agent is γ-glycidyl ether oxygen propyl trimethoxy silicane, all the other are with embodiment 3.
Silicasol-combined corundum matter mould material prepared by the present embodiment, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 4 ~ 7MPa, 6 ~ 10MPa.
This embodiment compared with prior art has following positively effect:
This embodiment is carried out in-situ modified by introducing silane coupling agent to silicon sol, silane coupling agent hydrolysate and silicon sol carry out chemical reaction, form the hybrid structure of organic/inorganic, good flowing properties, accelerate the formation of silicon sol network structure, be convenient to the demoulding, early strength is high, production technique is simple, decreases the damage of material in transport and use procedure.
Corundum pouring material prepared by this embodiment, the strength at normal temperature under 50 DEG C × 24h and 110 DEG C × 24h condition after thermal treatment is respectively 3.5 ~ 8MPa, 6 ~ 12MPa, and intensity is significantly improved.
The preparation method of this embodiment is simple, be convenient to the demoulding and to equipment without particular requirement; It is high and be convenient to the feature of transporting that prepared silicasol-combined corundum matter mould material has good flowing properties, early strength.
Claims (8)
1. a preparation method for silicasol-combined corundum matter mould material, is characterized in that described preparation method is: with the α-Al of the white fused alumina fine powder of the white fused alumina particle of the Brown Alundum particle of 2 ~ 14wt%, 40 ~ 76wt%, 10 ~ 40wt%, 1 ~ 10wt%
2o
3the fine silica powder of micro mist and 1 ~ 10wt% is raw material, is dry mixed 1 ~ 2min; The silicon sol of additional described raw material 5 ~ 15wt%, mixing 1 ~ 2min, then the silane coupling agent of additional described silicon sol 0.2 ~ 4wt%, mixing 1 ~ 2min, obtains silicasol-combined corundum matter mould material;
The Al of described white fused alumina particle
2o
3content>=95wt%; The grain composition of white fused alumina is: particle diameter is less than 3mm and is more than or equal to 1mm is 25 ~ 45wt%, and particle diameter is less than 1mm and is more than or equal to 0.088mm is 55 ~ 75wt%.
2. the preparation method of silicasol-combined corundum matter mould material according to claim 1, is characterized in that the Al of described Brown Alundum particle
2o
3content>=95wt%, particle diameter is 5 ~ 3mm.
3. the preparation method of silicasol-combined corundum matter mould material according to claim 1, is characterized in that the Al of described white fused alumina fine powder
2o
3content>=98wt%, particle diameter≤0.088mm.
4. the preparation method of silicasol-combined corundum matter mould material according to claim 1, is characterized in that described α-Al
2o
3the Al of micro mist
2o
3content>=98wt%, particle diameter≤3 μm.
5. the preparation method of silicasol-combined corundum matter mould material according to claim 1, is characterized in that the SiO of described fine silica powder
2content>=98wt%, particle diameter≤3 μm.
6. the preparation method of silicasol-combined corundum matter mould material according to claim 1, is characterized in that the SiO of described silicon sol
2content is 25 ~ 40%, Na
2o content≤0.3%; Median size 10 ~ the 20nm of described silicon sol, pH value is 8.5 ~ 10.
7. the preparation method of silicasol-combined corundum matter mould material according to claim 1, is characterized in that described silane coupling agent is γ-methacryloxypropyl trimethoxy silane or is γ-glycidyl ether oxygen propyl trimethoxy silicane.
8. a silicasol-combined corundum matter mould material, is characterized in that described silicasol-combined corundum matter mould material is the silicasol-combined corundum matter mould material prepared by preparation method of the silicasol-combined corundum matter mould material according to any one of claim 1 ~ 7.
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| CN201510619790.6A CN105218113B (en) | 2015-09-25 | 2015-09-25 | A kind of silicasol-combined corundum matter castable and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059448A (en) * | 2018-02-13 | 2018-05-22 | 湖南镭目科技有限公司 | A kind of fire-resistant gravity flow pouring material |
| CN110229008A (en) * | 2019-07-05 | 2019-09-13 | 巩义市兴嘉耐火材料有限公司 | Long-life large ladle furnace corundum castable |
| CN112794703A (en) * | 2021-02-20 | 2021-05-14 | 中冶武汉冶金建筑研究院有限公司 | High-aluminum self-flow castable and preparation method thereof |
| CN113354425A (en) * | 2021-06-25 | 2021-09-07 | 中冶武汉冶金建筑研究院有限公司 | Acid-resistant spray paint suitable for spherical roof of hot blast stove |
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| CN101602595A (en) * | 2009-06-30 | 2009-12-16 | 河南省耕生耐火材料有限公司 | Silicasol-combined corundum castable and prepare the method for abrasion-proof prefabricated component |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059448A (en) * | 2018-02-13 | 2018-05-22 | 湖南镭目科技有限公司 | A kind of fire-resistant gravity flow pouring material |
| CN108059448B (en) * | 2018-02-13 | 2021-08-27 | 湖南镭目科技有限公司 | Fireproof self-flow castable |
| CN110229008A (en) * | 2019-07-05 | 2019-09-13 | 巩义市兴嘉耐火材料有限公司 | Long-life large ladle furnace corundum castable |
| CN112794703A (en) * | 2021-02-20 | 2021-05-14 | 中冶武汉冶金建筑研究院有限公司 | High-aluminum self-flow castable and preparation method thereof |
| CN113354425A (en) * | 2021-06-25 | 2021-09-07 | 中冶武汉冶金建筑研究院有限公司 | Acid-resistant spray paint suitable for spherical roof of hot blast stove |
| CN113354425B (en) * | 2021-06-25 | 2022-05-20 | 中冶武汉冶金建筑研究院有限公司 | Acid-resistant spray paint suitable for spherical roof of hot blast stove |
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| CN105218113B (en) | 2017-11-28 |
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