CN105565825A - Nanometer composite oxide ceramic combined aluminum-spinel fireproof casting material - Google Patents
Nanometer composite oxide ceramic combined aluminum-spinel fireproof casting material Download PDFInfo
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- CN105565825A CN105565825A CN201410523019.4A CN201410523019A CN105565825A CN 105565825 A CN105565825 A CN 105565825A CN 201410523019 A CN201410523019 A CN 201410523019A CN 105565825 A CN105565825 A CN 105565825A
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Abstract
The invention relates to a nanometer composite oxide ceramic combined aluminum-spinel fireproof casting material, which comprises the following raw materials by weight: 30-40 parts of an aggregate, 60-70 parts of a powder material, and 5-10 parts of an admixture, wherein the aggregate comprises graphite, magnesite, alumina hollow ball, zirconia hollow ball and silicon carbide, the powder material comprises alpha-Al2O3 powder, nanometer zinc oxide and carbon nano-tubes, and the admixture comprises carboxymethyl cellulose and sodium hexametaphosphate.
Description
Technical field
The invention belongs to technical field of refractory materials, particularly relate to a kind of nanocomposite oxide ceramic combining alumina-spinelle refractory castable.
Background technology
Lowweight Refractory Castable can be divided into three major types according to the difference of use temperature.One is common lagging material, and its use temperature is usually less than 1200 DEG C; Two is senior lagging materials, use temperature usually above 1500 DEG C; Three is the lagging materials between both, and its use temperature is between 1200 ~ 1500 DEG C.Wherein, the 3rd class insulating refractory is applied more extensive at iron and steel and petrochemical industry.Usual spendable refractory materials is mainly Al2O3-SiO2 based material, but this kind of refractory materials is when petrochemical industry uses, due to the impact of residing reducing atmosphere or alkaline environment, the damage of refractory materials can be caused to aggravate, thus the work-ing life of material is reduced.In addition, because in traditional Lowweight Refractory Castable, pore size is larger, many places, aperture are in grade, like this when this material uses in hot environment, due to the aggravation of radiative transfer and transmission of heat by convection, the thermal conductivity of refractory materials can be made to raise, and then reduce the heat insulation and preservation effect of refractory materials, increase the loss of heat energy, increase production cost.
For this reason, need the high-performance refractory aggregate being applicable to Lowweight Refractory Castable of development of new, can stablize in high temperature reducing atmospheres and alkaline environment and use, and the air vent aperture of material internal is low as far as possible, be beneficial to improve the materials'use life-span and the loss reducing energy consumption.
Summary of the invention
In view of this, for the deficiency that the above prior art exists, provide a kind of nanocomposite oxide ceramic combining alumina-spinelle refractory castable.
A kind of nanocomposite oxide ceramic combining alumina-spinelle refractory castable, comprise the raw material of following portions by weight: 30 ~ 40 parts of aggregates, 60 ~ 70 parts of powders, 5 ~ 10 parts of admixtures, described aggregate is made up of graphite, magnesia, alumina hollow ball, zirconia-alumina hollow ball and silicon carbide; Described powder is by α ~ Al
2o
3powder, nano zine oxide, carbon nanotube form; Described admixture is made up of carboxymethyl cellulose, Sodium hexametaphosphate 99.
Technique effect of the present invention is: magnesia at high temperature, obtain magnesium oxide, silicon-dioxide, aluminum oxide and magnesium oxide react and carry out calcining and generates magnesium-aluminium spinel, nano zine oxide forms solid liquid phase by the displacement of zine ion and magnesium ion, produce magnesium ion room, and then be conducive to aluminum oxide and magnesium oxide reacts to generate magnesium-aluminium spinel, the magnesium-aluminium spinel generated and graphite, alumina hollow ball, zirconia-alumina hollow ball, silicon carbide, carbon nanotube is combined closely, the carbon nanotube material that can adsorb in mould material strengthens the physical strength of refractory castable further, due to alumina hollow ball, the existence of zirconia-alumina hollow ball, make nanocomposite oxide ceramic combining alumina-spinelle refractory castable lightweight and there is corrosion-resistant function more.
Embodiment
The technical solution adopted in the present invention a certain proportion of aggregate, powder and admixture is carried out mixing to obtain nanocomposite oxide ceramic combining alumina-spinelle refractory castable.Concretely:
A kind of nanocomposite oxide ceramic combining alumina-spinelle refractory castable, comprise the raw material of following portions by weight: 30 ~ 40 parts of aggregates, 60 ~ 70 parts of powders, 5 ~ 10 parts of admixtures, described aggregate is made up of graphite, magnesia, alumina hollow ball, zirconia-alumina hollow ball and silicon carbide; Described powder is by α ~ Al
2o
3powder, nano zine oxide, carbon nanotube form; Described admixture is made up of carboxymethyl cellulose, Sodium hexametaphosphate 99.Wherein, magnesia at high temperature, obtain magnesium oxide, silicon-dioxide, aluminum oxide and magnesium oxide react and carry out calcining and generates magnesium-aluminium spinel, nano zine oxide forms solid liquid phase by the displacement of zine ion and magnesium ion, produce magnesium ion room, and then be conducive to aluminum oxide and magnesium oxide reacts to generate magnesium-aluminium spinel, the magnesium-aluminium spinel generated and graphite, alumina hollow ball, zirconia-alumina hollow ball, silicon carbide, carbon nanotube is combined closely, the carbon nanotube material that can adsorb in mould material strengthens the physical strength of refractory castable further, due to alumina hollow ball, the existence of zirconia-alumina hollow ball, make nanocomposite oxide ceramic combining alumina-spinelle refractory castable lightweight and there is corrosion-resistant function more.
Further, aggregate is 35 parts, and powder is 65 parts, and admixture is 8 parts; Aggregate comprises coarse aggregate, middle aggregate, fine aggregate, the particle diameter of coarse aggregate is 2 ~ 3mm, the particle diameter of middle aggregate is 1 ~ 2mm, the particle diameter of fine aggregate is 0.1 ~ 0.8mm, wherein, alumina hollow ball, zirconia-alumina hollow ball are coarse aggregate, and graphite is middle aggregate, magnesia is fine aggregate, and such as, in aggregate, the parts by weight of coarse aggregate, middle aggregate, fine aggregate are coarse aggregate 30 parts, 20 parts, middle aggregate, fine aggregate 50 parts.
Further, the α ~ Al in described powder
2o
3the parts by weight of powder, nano zine oxide, carbon nanotube are: α ~ Al
2o
360 parts, powder, nano zine oxide 20 parts, carbon nanotube 20 parts; In described admixture, the parts by weight of carboxymethyl cellulose, Sodium hexametaphosphate 99 are: carboxymethyl cellulose 60 parts, Sodium hexametaphosphate 99 40 parts.
As described above, be only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence namely generally done according to the present patent application the scope of the claims and invention description content changes and modifies, and all still remains within the scope of the patent.
Claims (5)
1. a nanocomposite oxide ceramic combining alumina-spinelle refractory castable, it is characterized in that: the raw material comprising following portions by weight: 30 ~ 40 parts of aggregates, 60 ~ 70 parts of powders, 5 ~ 10 parts of admixtures, described aggregate is made up of graphite, magnesia, alumina hollow ball, zirconia-alumina hollow ball and silicon carbide; Described powder is by α ~ Al
2o
3powder, nano zine oxide, carbon nanotube form; Described admixture is made up of carboxymethyl cellulose, Sodium hexametaphosphate 99.
2. nanocomposite oxide ceramic combining alumina-spinelle refractory castable according to claim 1, is characterized in that: aggregate is 35 parts, and powder is 65 parts, and admixture is 8 parts; Aggregate comprises coarse aggregate, middle aggregate, fine aggregate, and the particle diameter of coarse aggregate is 2 ~ 3mm, and the particle diameter of middle aggregate is 1 ~ 2mm, the particle diameter of fine aggregate is 0.1 ~ 0.8mm, and wherein, alumina hollow ball, zirconia-alumina hollow ball are coarse aggregate, graphite is middle aggregate, and magnesia is fine aggregate.
3. nanocomposite oxide ceramic combining alumina-spinelle refractory castable according to claim 2, is characterized in that: in aggregate, the parts by weight of coarse aggregate, middle aggregate, fine aggregate are coarse aggregate 30 parts, 20 parts, middle aggregate, fine aggregate 50 parts.
4. nanocomposite oxide ceramic combining alumina-spinelle refractory castable according to claim 3, is characterized in that: the α ~ Al in described powder
2o
3the parts by weight of powder, nano zine oxide, carbon nanotube are: α ~ Al
2o
360 parts, powder, nano zine oxide 20 parts, carbon nanotube 20 parts.
5. nanocomposite oxide ceramic combining alumina-spinelle refractory castable according to claim 4, is characterized in that: in described admixture, the parts by weight of carboxymethyl cellulose, Sodium hexametaphosphate 99 are: carboxymethyl cellulose 60 parts, Sodium hexametaphosphate 99 40 parts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523019.4A CN105565825A (en) | 2014-10-08 | 2014-10-08 | Nanometer composite oxide ceramic combined aluminum-spinel fireproof casting material |
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| CN201410523019.4A CN105565825A (en) | 2014-10-08 | 2014-10-08 | Nanometer composite oxide ceramic combined aluminum-spinel fireproof casting material |
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| CN105565825A true CN105565825A (en) | 2016-05-11 |
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| CN201410523019.4A Pending CN105565825A (en) | 2014-10-08 | 2014-10-08 | Nanometer composite oxide ceramic combined aluminum-spinel fireproof casting material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045534A (en) * | 2016-06-03 | 2016-10-26 | 宜兴新威利成耐火材料有限公司 | Magnesium aluminate spinel tin refractory castable |
| CN113061045A (en) * | 2021-04-21 | 2021-07-02 | 营口丰华耐火材料有限公司 | Magnesium-iron-zinc-aluminum composite spinel refractory brick for cement kiln burning zone and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503496A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon pouring material |
| CN103539475A (en) * | 2013-11-09 | 2014-01-29 | 宁夏天纵泓光余热发电技术有限公司 | Corundum castable refractory |
| CN103664211A (en) * | 2013-12-12 | 2014-03-26 | 常州苏瑞纳碳科技有限公司 | Castable for blast-furnace tapping channel and preparation method thereof |
-
2014
- 2014-10-08 CN CN201410523019.4A patent/CN105565825A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503496A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon pouring material |
| CN103539475A (en) * | 2013-11-09 | 2014-01-29 | 宁夏天纵泓光余热发电技术有限公司 | Corundum castable refractory |
| CN103664211A (en) * | 2013-12-12 | 2014-03-26 | 常州苏瑞纳碳科技有限公司 | Castable for blast-furnace tapping channel and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045534A (en) * | 2016-06-03 | 2016-10-26 | 宜兴新威利成耐火材料有限公司 | Magnesium aluminate spinel tin refractory castable |
| CN113061045A (en) * | 2021-04-21 | 2021-07-02 | 营口丰华耐火材料有限公司 | Magnesium-iron-zinc-aluminum composite spinel refractory brick for cement kiln burning zone and preparation method thereof |
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Application publication date: 20160511 |
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