CN101423401B - Composite combining corundum based refractory materials - Google Patents
Composite combining corundum based refractory materials Download PDFInfo
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- CN101423401B CN101423401B CN2008101801586A CN200810180158A CN101423401B CN 101423401 B CN101423401 B CN 101423401B CN 2008101801586 A CN2008101801586 A CN 2008101801586A CN 200810180158 A CN200810180158 A CN 200810180158A CN 101423401 B CN101423401 B CN 101423401B
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Abstract
The invention relates to a composite sialon-corundum fire-resisting material, which is characterized in that the formulation of the fire-resisting material comprises the following: 30 to 54 percent of corundum or aluminum oxide hollow sphere the diameter of which is between 3 and 1 millimeter, 7 to 30 percent of the corundum or the aluminum oxide hollow sphere the diameter of which is between 1 and 0.0088 milliliter, 16 to 30 percent of corundum powder the diameter d90 of which is less than 0.088 millimeter, 3 to 10 percent of alpha aluminum oxide micro powder, 2 to 8 percent of hydrated aluminum oxide, 0.2 to 2 percent of siliceous dust, 0 to 2 percent of barium aluminate cement, 0.05 to 0.4 percent of efficient water reducing agent (which is prepared from polycarboxylic acid, sulfonated naphthaldehyde polymer and sulfonated melamine polymer), 1 to 6 percent of polyacrylic acid emulsion, and 1 to 6 percent of water. The composite sialon-corundum fire-resisting material obviously has the advantages of coagulation, hardening, demolding, drying and heating performances remarkably similar to a low cement casting material, and good high-temperature resistant performance, and can be made into various products or be used as an unshaped material.
Description
Technical field
The present invention relates to a kind of corundum matter high grade refractory, have high temperature resistant good, thermal shock resistance is strong, sintering range is wide, is convenient to manufacture the advantage of large-scale, special shape goods, is fit to kiln furnitures and other refractory materialss that is used for the new type high temperature kiln use.
Background technology
Generally, corundum based refractory materials is used to build by laying bricks or stones high temperature kiln.Improve with energy prices, that high temperature kiln has is more energy-conservation, burn feature soon.Heat insulation in order to strengthen, kiln car or kiln lining can use hollow or be filled with the concave brick of light material.In order to reduce heat absorption, kiln furnitures also can be hollow.Also have, available pushed bat kiln replaces tunnel furnace.Under these occasions, all need to use to have well high temperature resistant, heat-resisting shake, abrasion resistance properties, and large size or special odd-shaped material.
Conventional corundum brick adopts the sintering process manufacturing, be about to corundum aggregate, corundum fine powder, wedding agent (clay, Tai-Ace S 150, carboxymethyl cellulose, spent pulping liquor) and cooperate, again through mix, suppress, drying, burn till, operation such as check makes refractory product.But the sintering temperature height of this technology, sintering range be narrow, be easy to occur problems such as distortion, cracking, underburnt, and the restriction that is subjected to mould and press also inconvenience produce large size or special odd-shaped goods.
Adopt pouring procedure can make the prefabricated component that shape and size meet the requirements, just can obtain corresponding articles through sintering again.But corundum pouring material has used pure calcium aluminate cement in a large number.The CaO that cement is brought into has had a strong impact on the performance of material.
Previously, the author has applied for a Chinese invention patent: " a kind of contain barytic refractory materials " (CN1590346).The main points of this invention are to replace aluminous cement with barium aluminate cement, and normal temperature relies on the aquation of cement to obtain intensity, rely on the combination of generation celsian-felspar to produce intensity mutually after the thermal treatment, and obtain good heat-shock resistance and the high thermal resistance that makes moderate progress.But the celsian-felspar combined fire-resistant material still needs to use a large amount of cement, has limited the raising of material resistance to elevated temperatures.
Summary of the invention
The objective of the invention is to study a kind of composite combining corundum based refractory materials, make it have the condensing of remarkable similar low cement deposit material, sclerosis, the demoulding, drying and heating properties, but also have the good temperature resistance energy.
The present invention proposes a kind of novel compound in conjunction with senior unshape refractory.Under the normal temperature, but mainly rely on the reaction of polyacrylic acid emulsion ALUMINA HYDRATE and a small amount of barium aluminate to form polyacrylic acid aluminium (barium), form three-dimensional crosslinking structure fast and controllably, thereby obtain good to condense, sclerosis, the demoulding and drying property.After the thermal treatment, mainly rely on the nodulizing that helps of celsian-felspar, make the active oxidation aluminum sinter and obtain good physicals.
Prescription of the present invention is:
3-1mm corundum or alumina hollow ball 30-54%
1-0.0088mm corundum or alumina hollow ball 7-30%
d
90＜0.088mm lapis amiridis 16-30%
αYang Hualv micro mist 3-10%
But ALUMINA HYDRATE 2-8%
Silicon ash 0.2-2%
Barium aluminate cement 0-2%
Add high efficiency water reducing agent (poly carboxylic acid+sulfonated naphthalene yuban+sulfonated melamine polymkeric substance) 0.05-0.4%
Add polyacrylic emulsion 1-6%
Add water 1-6%
Described corundum is commercially available corundum refractory product, comprise fused corundom (compact alumina, white fused alumina, inferior white＜high alumina corundum and brown corundum), and alundum (tabular alundum, ordinary sinter corundum).
Described alumina hollow ball is commercially available refractory products.
Described αYang Hualv micro mist is commercially available refractory products, its particle diameter d
50(account for total amount 50% small-particle in the powder and account for total amount 50% oarse-grained boundary size)≤8 microns.
But described ALUMINA HYDRATE is the commercially available prod, and its principal constituent is ρ-Al
2O
3The mixture of the steady alpha-alumina crystals of Jie.
Described silicon ash is the commercially available prod, SiO
2Content is more than or equal to 96%.
Described barium aluminate cement system is engaged in 1300～1600 ℃ by Tan Suan Barium and aluminum oxide or aluminium hydroxide, and to calcine synthetic be the cement of main component with aluminic acid Yi Barium BA.
Described high efficiency water reducing agent is commercially available cement water reducing agent, comprises sulfonated naphthalene yuban high efficiency water reducing agent, sulfonated melamine polymer high efficiency water reducer, and any cooperation of polycarboxylic acid series high efficiency water reducing agent.
Described polyacrylic emulsion is commercially available building polyacrylic acid emulsion, comprises building polyacrylic acid emulsion, building vinylformic acid and acrylate copolymer emulsion and vinylformic acid-acrylate-styrene terpolymer non-ionic water-soluble emulsion.The solids content 40-60% of emulsion, typical particle diameter 0.1-0.3 μ m, pH value 6-9.
Embodiment
Embodiment 1:
3-1mm corundum 52%, 1-0.088mm corundum 20%, 0.088mm corundum 18%, 0.002mm alumina powder 4.5%, barium aluminate cement 1%, silicon ash (dioxide-containing silica 98%) 0.5%, but ALUMINA HYDRATE 4% adds polycarboxylate water-reducer 0.1%, polyacrylic acid emulsion 3%, water 3% back companion and, obtain the slurry of good fluidity.After the shaping, slurry condensed in 0.5 hour, solidified in 1 hour, can the demoulding after 6 hours.Through 110 ℃ * 24H drying, sample obtains the folding strength of 11MPa, the compressive strength of 50MPa.Through the folding strength of thermal treatment in 1100 ℃ * 3 hours acquisition 15MPa, the compressive strength of 53MPa is burnt till line and is changed to 0.0%.Through the folding strength of thermal treatment in 1500 ℃ * 3 hours acquisition 17MPa, the compressive strength of 73MPa is burnt till line and is changed to-0.1%, refractoriness under load T0.6=1630 ℃.
Embodiment 2:
3-1mm alumina hollow ball 32%, 1-0.088mm alumina hollow ball 10%, 0.088mm corundum 37%, 0.002mm alumina powder 10%, barium aluminate cement 2%, silicon ash (dioxide-containing silica 98%) 1%, but ALUMINA HYDRATE 8%, add polycarboxylate water-reducer 0.2%, polyacrylic acid emulsion 6%, but fast demoulding after water 6% is shaped are through quiet stagnant, dry, 1550 ℃ * 3 hours sintering, make volume density 1.5g/cm3, compressive strength 21MPa, refractoriness under load T0.6=1620 ℃ material.This material can be used as special shape insulating refractory and uses.
The present invention has the condensing of remarkable similar low cement deposit material, sclerosis, the demoulding, drying and heating properties, but also has the good temperature resistance energy, can make various goods or uses as unsetting material.
Claims (1)
1. composite combining corundum based refractory materials, it is characterized in that: the proportioning of described refractory materials is:
Described corundum is commercially available corundum refractory product, comprises fused corundom and alundum, and described fused corundom is compact alumina or white fused alumina or sub-white corundum or brown corundum, and described alundum is tabular alundum or ordinary sinter corundum; Described alumina hollow ball is commercially available refractory products; Described αYang Hualv micro mist is commercially available refractory products, its particle diameter d
50Account for total amount 50% small-particle in the-powder and account for total amount 50% oarse-grained boundary size≤8 microns; But described ALUMINA HYDRATE is the commercially available prod, and its principal constituent is ρ-Al
2O
3The mixture of the steady alpha-alumina crystals of Jie; Described silicon ash is the commercially available prod, SiO
2Content is more than or equal to 96%; Described barium aluminate cement system is engaged in 1300～1600 ℃ by barium carbonate and aluminum oxide or aluminium hydroxide and calcines the synthetic cement; Described high efficiency water reducing agent is commercially available cement water reducing agent, comprises sulfonated naphthalene yuban high efficiency water reducing agent, sulfonated melamine polymer high efficiency water reducer, and any cooperation of polycarboxylic acid series high efficiency water reducing agent; Described polyacrylic acid emulsion is commercially available building polyacrylic acid emulsion, comprise building polyacrylic acid emulsion, building vinylformic acid and acrylate copolymer emulsion and vinylformic acid-acrylate-styrene terpolymer emulsion, the solids content 40-60% of emulsion, typical particle diameter 0.1-0.3 μ m, pH value 6-9.
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| CN2008101801586A CN101423401B (en) | 2008-12-01 | 2008-12-01 | Composite combining corundum based refractory materials |
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| CN2008101801586A CN101423401B (en) | 2008-12-01 | 2008-12-01 | Composite combining corundum based refractory materials |
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| CN101423401A CN101423401A (en) | 2009-05-06 |
| CN101423401B true CN101423401B (en) | 2011-11-09 |
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Families Citing this family (14)
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| CN101691295B (en) * | 2009-10-29 | 2012-02-01 | 冯维银 | Formula of high-purity alumina hollow ball product and low-temperature production method |
| CN101935221A (en) * | 2010-08-24 | 2011-01-05 | 中钢集团洛阳耐火材料研究院有限公司 | Low apparent porosity corundum refractory castable |
| CN102167621B (en) * | 2011-01-21 | 2013-04-17 | 武汉科技大学 | Aluminum oxide hollow sphere light insulating brick and preparation method thereof |
| CN102261845A (en) * | 2011-06-06 | 2011-11-30 | 浙江大学 | Heat insulation integral composite brick with corundum-mullite structure and preparation method |
| CN102503460B (en) * | 2011-10-12 | 2014-06-04 | 瑞泰科技股份有限公司 | Phosphate bonded castable adopting composite hardening accelerator |
| CN102527926B (en) * | 2012-02-24 | 2016-08-31 | 上海市机械制造工艺研究所有限公司 | A kind of cast steel water glass self-drying coating |
| CN102659426A (en) * | 2012-04-20 | 2012-09-12 | 武汉科技大学 | Micro-porous high-strength anti-corrosion corundum refractory aggregate and preparation method thereof |
| CN105399432B (en) * | 2015-11-23 | 2018-08-10 | 宜兴瑞泰耐火材料有限公司 | A kind of petrochemical industry high-strength high-purity low silicon corundum brick and preparation method thereof |
| CN106927700B (en) * | 2017-04-05 | 2019-04-02 | 洛阳理工学院 | One kind barium silicate cement containing baryta fledspar and preparation method thereof |
| CN107651946A (en) * | 2017-10-30 | 2018-02-02 | 孝义市和中兴矿产有限公司 | A kind of calcium carbide fire door anti-thermal shock resistance to erosion castable |
| CN108298966B (en) * | 2017-12-15 | 2020-10-30 | 长兴正发热电耐火材料有限公司 | Double-component refractory brick and preparation method thereof |
| CN108373337A (en) * | 2018-03-05 | 2018-08-07 | 北京利尔高温材料股份有限公司 | A kind of wear-resisting gunning refractory of blast furnace lining |
| CN111362676A (en) * | 2018-12-25 | 2020-07-03 | 上海皕涛耐火材料有限公司 | High-wear-resistance quick-drying refractory castable and preparation method thereof |
| CN115433001A (en) * | 2022-10-21 | 2022-12-06 | 张会友 | Sintered microcrystal reinforcement and preparation process and application thereof |
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| CN1323761A (en) * | 2001-07-04 | 2001-11-28 | 中国建筑材料科学研究院 | Large Al-Si system large shaped refractory products and the production process |
| CN1657485A (en) * | 2005-03-22 | 2005-08-24 | 北京瑞泰高温材料科技股份有限公司 | Sintered magnesing complex-phase refractory |
| CN1827555A (en) * | 2005-02-28 | 2006-09-06 | 宝山钢铁股份有限公司 | Non-oxide composite refractory materials for molten iron chute |
| CN101219865A (en) * | 2007-12-05 | 2008-07-16 | 北京瑞泰高温材料科技股份有限公司 | Silicate cement for manufacturing advanced silica refractory and manufacturing technique thereof |
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Patent Citations (4)
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| CN1323761A (en) * | 2001-07-04 | 2001-11-28 | 中国建筑材料科学研究院 | Large Al-Si system large shaped refractory products and the production process |
| CN1827555A (en) * | 2005-02-28 | 2006-09-06 | 宝山钢铁股份有限公司 | Non-oxide composite refractory materials for molten iron chute |
| CN1657485A (en) * | 2005-03-22 | 2005-08-24 | 北京瑞泰高温材料科技股份有限公司 | Sintered magnesing complex-phase refractory |
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| CN101423401A (en) | 2009-05-06 |
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Application publication date: 20090506 Assignee: Yixing Refractory Material Co.,Ltd. Assignor: Ruitai Technology Co., Ltd. Contract record no.: 2014320000217 Denomination of invention: Composite combining corundum based refractory materials Granted publication date: 20111109 License type: Exclusive License Record date: 20140317 |
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