CN105218113B - A kind of silicasol-combined corundum matter castable and preparation method thereof - Google Patents
A kind of silicasol-combined corundum matter castable and preparation method thereof Download PDFInfo
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- CN105218113B CN105218113B CN201510619790.6A CN201510619790A CN105218113B CN 105218113 B CN105218113 B CN 105218113B CN 201510619790 A CN201510619790 A CN 201510619790A CN 105218113 B CN105218113 B CN 105218113B
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Abstract
The present invention relates to a kind of silicasol-combined corundum matter castable and preparation method thereof.Its technical scheme is：With 2 ~ 14wt% Brown Alundum particle, 40 ~ 76wt% white fused alumina particle, 10 ~ 40wt% white fused alumina fine powder, 1 ~ 10wt% α Al2O3Micro mist and 1 ~ 10wt% fine silica powder are raw material, dry-mixed 1 ~ 2min；Additional 5 ~ the 15wt% of raw material Ludox, 1 ~ 2min, then the additional 0.2 ~ 4wt% of Ludox silane coupler are mixed, 1 ~ 2min is mixed, produces silicasol-combined corundum matter castable.The Al of the white fused alumina particle2O3Content >=95wt%；The grain composition of white fused alumina is：Particle diameter is less than 3mm and is 25 ~ 45wt% more than or equal to 1mm, and particle diameter is less than 1mm and is 55 ~ 75wt% more than or equal to 0.088mm.The preparation method of the present invention is simple, is easy to the demoulding and to equipment without particular/special requirement；The characteristics of prepared silicasol-combined corundum matter castable has good flowing properties, early strength high and is readily transported.
Description
Technical field
The invention belongs to corundum pouring material technical field.More particularly to a kind of silicasol-combined corundum matter castable and its
Preparation method.
Background technology
Ludox is that silica colloidal particles are dispersed in water the solution to be formed, and the castable combined using Ludox is existed
Drying property, cooking performance, sintering character, volume stability and elevated temperature strength etc. pour into a mould fire proofed wood relative to Hydraulic binding
Material has obvious advantage, and is progressively paid attention to by scientific research personnel, and practical application is obtained in castable.
But the corundum pouring material that Ludox combines, from the demoulding to drying, its intensity is typically relatively low, also implies that morning
The low strength of phase, inconvenience of the castable from the demoulding, transport, production and construction is caused, material damage more seriously can not be just
Often use, add the production cycle, waste human and material resources and financial resources.Therefore the raising of early strength is most important.
The method for improving early strength at present mostly uses coagulant, and selected coagulant is typically aluminium, magnesium and calcium etc.
Corresponding basic anhydride, hydroxide and salt etc., coagulant are real by gelation process or flocculation process after adding
The raising of existing early strength.But the addition of coagulant can accelerate freezing rate, cause mobile performance to reduce, and be brought not to construction
Just.Also have using aluminous cement as coagulant, but in the case of fine silica powder is contained in raw material, calcium aluminate water
The introducing of mud can cause castable easily to form low-melting-point material phase at high temperature, and intensity decreases are unfavorable for using.
The content of the invention
It is contemplated that overcome prior art defect, it is therefore an objective to provide a kind of technique simply and be easy to the demoulding Ludox knot
The preparation method of corundum pouring material is closed, the silicasol-combined corundum matter castable good flowing properties prepared with this method and early stage
Intensity is high.
To achieve the above object, the technical solution adopted by the present invention is：With 2 ~ 14wt% Brown Alundum particle, 40 ~ 76wt%
White fused alumina particle, 10 ~ 40wt% white fused alumina fine powder, 1 ~ 10wt% α-Al2O3 The fine silica powder of micro mist and 1 ~ 10wt%
For raw material, dry-mixed 1 ~ 2min；Additional 5 ~ the 15wt% of raw material Ludox, 1 ~ 2min of mixing, then the additional Ludox 0.2 ~
4wt% silane coupler, 1 ~ 2min is mixed, produces silicasol-combined corundum matter castable.
The Al of the white fused alumina particle2O3Content >=95wt%；The grain composition of white fused alumina is：Particle diameter is less than 3mm and is more than
It is 25 ~ 45wt% equal to 1mm, particle diameter is less than 1mm and is 55 ~ 75wt% more than or equal to 0.088mm.
The Al of the Brown Alundum particle2O3Content >=95wt%, particle diameter are 5~3mm.
The Al of the white fused alumina fine powder2O3Content >=98wt%, particle diameter≤0.088mm.
α-the Al2O3The Al of micro mist2O3Content >=98wt%, particle diameter≤3 μm.
The SiO of the fine silica powder2Content >=98wt%, particle diameter≤3 μm.
The SiO of the Ludox2Content is 25 ~ 40%, Na2O content≤0.3%；The average grain diameter 10 of the Ludox ~
20nm, pH value are 8.5 ~ 10.
The silane coupler is γ-methacryloxypropyl trimethoxy silane or is γ-glycidyl ether oxygen
Propyl trimethoxy silicane.
Due to being had the positive effect that compared with prior art using above-mentioned technical proposal, the present invention：
The present invention is in-situ modified to Ludox progress by introducing silane coupler, and silane coupler hydrolysate and silicon are molten
Glue is chemically reacted, and is formed the hybrid structure of organic/inorganic, good flowing properties, is accelerated the formation of Ludox network structure,
It is easy to be stripped, early strength is high, simple production process, reduces transport and the damage using process in which materials.
Corundum pouring material prepared by the present invention, it is normal after being heat-treated under the conditions of 50 DEG C × 24h and 110 DEG C × 24h
Warm rupture strength is respectively 3.5 ~ 8MPa, 6 ~ 12MPa, and intensity is significantly improved.
The preparation method of the present invention is simple, is easy to the demoulding and to equipment without particular/special requirement；Prepared corundum pouring material
The characteristics of with good flowing properties, early strength height and being readily transported.
Embodiment
With reference to embodiment, the invention will be further described, not to the limitation of its protection domain.
It is first that raw material Unify legislation involved in present embodiment is as follows to avoid repeating, in embodiment no longer
Repeat：
The Al of the white fused alumina particle2O3Content >=95wt%；The grain composition of white fused alumina is：Particle diameter is less than 3mm and is more than
It is 25 ~ 45wt% equal to 1mm, particle diameter is less than 1mm and is 55 ~ 75wt% more than or equal to 0.088mm.
The Al of the Brown Alundum particle2O3Content >=95wt%, particle diameter are 5~3mm.
The Al of the white fused alumina fine powder2O3Content >=98wt%, particle diameter≤0.088mm.
α-the Al2O3The Al of micro mist2O3Content >=98wt%, particle diameter≤3 μm.
The SiO of the fine silica powder2Content >=98wt%, particle diameter≤3 μm.
The SiO of the Ludox2Content is 25 ~ 40%, Na2O content≤0.3%；The average grain diameter 10 of the Ludox ~
20nm, pH value are 8.5 ~ 10.
Embodiment 1
A kind of silicasol-combined corundum matter castable and preparation method thereof.With 2 ~ 6wt% Brown Alundum particle, 64 ~ 76wt%
White fused alumina particle, 10 ~ 20wt% white fused alumina fine powder, 7 ~ 10wt% α-Al2O3Micro mist and 4 ~ 7wt% fine silica powder
For raw material, dry-mixed 1 ~ 2min；Additional 5 ~ the 8wt% of raw material Ludox, 1 ~ 2min of mixing, then the additional Ludox 0.2 ~
1.5wt% silane coupler, 1 ~ 2min is mixed, produces silicasol-combined corundum matter castable.
Silane coupler described in the present embodiment is γ-methacryloxypropyl trimethoxy silane.
Silicasol-combined corundum matter castable prepared by the present embodiment, under the conditions of 50 DEG C × 24h and 110 DEG C × 24h
Strength at normal temperature after heat treatment is respectively 3.5 ~ 6MPa, 6 ~ 10MPa.
Embodiment 2
A kind of silicasol-combined corundum matter castable and preparation method thereof.With 6 ~ 10wt% Brown Alundum particle, 52 ~ 64wt%
White fused alumina particle, 20 ~ 30wt% white fused alumina fine powder, 4 ~ 7wt% α-Al2O3 Micro mist, 1 ~ 4wt% fine silica powder are
Raw material, dry-mixed 1 ~ 2min；Additional 8 ~ the 11wt% of raw material Ludox, 1 ~ 2min of mixing, then the additional Ludox 1.5 ~
2.8wt% silane coupler, 1 ~ 2min is mixed, produces silicasol-combined corundum matter castable.
Silane coupler described in the present embodiment is γ-methacryloxypropyl trimethoxy silane.
Silicasol-combined corundum matter castable prepared by the present embodiment, under the conditions of 50 DEG C × 24h and 110 DEG C × 24h
Strength at normal temperature after heat treatment is respectively 4 ~ 7MPa, 7 ~ 12MPa.
Embodiment 3
A kind of silicasol-combined corundum matter castable and preparation method thereof.With 10 ~ 14wt% Brown Alundum particle, 40 ~
52wt% white fused alumina particle, 30 ~ 40wt% white fused alumina fine powder, 1 ~ 4wt% α-Al2O3 The silica of micro mist, 7 ~ 10wt%
Micro mist is raw material, dry-mixed 1 ~ 2min；Additional 11 ~ the 15wt% of raw material Ludox, 1 ~ 2min of mixing, then the additional silicon are molten
2.8 ~ 4wt% of glue silane coupler, 1 ~ 2min is mixed, produces silicasol-combined corundum matter castable.
Silane coupler described in the present embodiment is γ-methacryloxypropyl trimethoxy silane.
Silicasol-combined corundum matter castable prepared by the present embodiment, under the conditions of 50 DEG C × 24h and 110 DEG C × 24h
Strength at normal temperature after heat treatment is respectively 4 ~ 8MPa, 6 ~ 11MPa.
Embodiment 4
A kind of silicasol-combined corundum matter castable and preparation method thereof.Except the silane coupler is γ-glycidol
Outside ether oxygen propyl trimethoxy silicane, remaining is the same as embodiment 1.
Silicasol-combined corundum matter castable prepared by the present embodiment, under the conditions of 50 DEG C × 24h and 110 DEG C × 24h
Strength at normal temperature after heat treatment is respectively 3.5 ~ 5.5MPa, 6 ~ 8MPa.
Embodiment 5
A kind of silicasol-combined corundum matter castable and preparation method thereof.Except the silane coupler is γ-glycidol
Outside ether oxygen propyl trimethoxy silicane, remaining is the same as embodiment 2.
Silicasol-combined corundum matter castable prepared by the present embodiment, under the conditions of 50 DEG C × 24h and 110 DEG C × 24h
Strength at normal temperature after heat treatment is respectively 4 ~ 6MPa, 7 ~ 11MP.
Embodiment 6
A kind of silicasol-combined corundum matter castable and preparation method thereof.Except the silane coupler is γ-glycidol
Outside ether oxygen propyl trimethoxy silicane, remaining is the same as embodiment 3.
Silicasol-combined corundum matter castable prepared by the present embodiment, under the conditions of 50 DEG C × 24h and 110 DEG C × 24h
Strength at normal temperature after heat treatment is respectively 4 ~ 7MPa, 6 ~ 10MPa.
Present embodiment has following good effect compared with prior art：
Present embodiment carries out in-situ modified, silane coupler hydrolysis production to Ludox by introducing silane coupler
Thing is chemically reacted with Ludox, is formed the hybrid structure of organic/inorganic, good flowing properties, is accelerated Ludox network knot
The formation of structure, it is easy to be stripped, early strength is high, simple production process, reduces transport and the damage using process in which materials.
Corundum pouring material prepared by present embodiment, under the conditions of 50 DEG C × 24h and 110 DEG C × 24h at heat
Strength at normal temperature after reason is respectively 3.5 ~ 8MPa, 6 ~ 12MPa, and intensity is significantly improved.
The preparation method of present embodiment is simple, is easy to the demoulding and to equipment without particular/special requirement；Prepared silicon is molten
The characteristics of cementing conjunction corundum pouring material has good flowing properties, early strength high and is readily transported.
Claims (6)
1. a kind of preparation method of silicasol-combined corundum matter castable, it is characterised in that the preparation method is：With 2~
14wt% Brown Alundum particle, 40~76wt% white fused alumina particle, 10~40wt% white fused alumina fine powder, 1~10wt%
α-Al2O3Micro mist and 1~10wt% fine silica powder are raw material, dry-mixed 1~2min；Additional 5~the 15wt%'s of raw material
Ludox, 1~2min, then the additional 0.2~4wt% of Ludox silane coupler are mixed, 1~2min is mixed, produces silicon
Colloidal sol combined corundum matter castable；
The Al of the white fused alumina particle2O3Content >=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 55~75wt% more than or equal to 0.088mm；
The SiO of the Ludox2Content is 25~40%, Na2O content≤0.3%；The average grain diameter 10 of the Ludox~
20nm, pH value are 8.5~10；
The silane coupler is γ-methacryloxypropyl trimethoxy silane or is γ-glycidyl ether oxygen propyl
Trimethoxy silane.
2. the preparation method of silicasol-combined corundum matter castable according to claim 1, it is characterised in that the Brown Alundum
The Al of particle2O3Content >=95wt%, particle diameter are 5~3mm.
3. the preparation method of silicasol-combined corundum matter castable according to claim 1, it is characterised in that the white fused alumina
The Al of fine powder2O3Content >=98wt%, particle diameter≤0.088mm.
4. the preparation method of silicasol-combined corundum matter castable according to claim 1, it is characterised in that the α-Al2O3
The Al of micro mist2O3Content >=98wt%, particle diameter≤3 μm.
5. the preparation method of silicasol-combined corundum matter castable according to claim 1, it is characterised in that the titanium dioxide
The SiO of silicon powder2Content >=98wt%, particle diameter≤3 μm.
6. a kind of silicasol-combined corundum matter castable, it is characterised in that the silicasol-combined corundum matter castable is according to power
Profit requires that the Ludox prepared by the preparation method of the silicasol-combined corundum matter castable any one of 1~5 combines
Corundum pouring material.
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| 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 |
| 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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| 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 |
| CN103396126B (en) * | 2013-07-16 | 2016-04-13 | 安徽瑞泰新材料科技有限公司 | A kind of refractory castable and using method thereof |
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