CN102557681B - Micro-expansion self-levelling castable - Google Patents
Micro-expansion self-levelling castable Download PDFInfo
- Publication number
- CN102557681B CN102557681B CN201110400300.5A CN201110400300A CN102557681B CN 102557681 B CN102557681 B CN 102557681B CN 201110400300 A CN201110400300 A CN 201110400300A CN 102557681 B CN102557681 B CN 102557681B
- Authority
- CN
- China
- Prior art keywords
- mould material
- micro
- levelling
- castable
- aluminum oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Ceramic Products (AREA)
Abstract
The invention discloses micro-expansion self-levelling castable used for the high-temperature kiln engineering. Because the micro-expansion self-levelling castable is produced from corundum (or bauxite), andalusite, aluminate cement, activated alumina, silicon gray and the dispersive alumina, wherein the corundum or bauxite is used as the filler, and the aluminate cement is used as the binder, the micro-expansion self-levelling castable achieves the effects of self-levelling and exhausting under the force of gravity per se without being vibrated, reduces the construction labor intensity, can micro-expand at high temperature without influencing the service life and is convenient to construct, the high temperature performance of the refractory material is improved.
Description
Technical field
The present invention relates to a kind of micro-expansion self-levelling castable, relate in particular to a kind of for kiln engineering micro-expansion self-levelling castable.
Background technology
Mould material claims again refractory castable, is a kind of granular or powder material that adds a certain amount of bonding agent to make by refractory material, has compared with high workability, is applicable to the unshape refractory with pouring type moulding.Refractory castable is a kind of refractory materials that is able to widespread use.But, tradition mould material substantially all needs vibration construction, in construction process, in order to improve speed of application, or solve the difficult problem that subrange can not vibrate construction, often by adding water, improve flowing property, thereby, cause mould material segregation, reduced demoulding strength, improved void content, the overall performance of mould material is significantly degenerated.
Mould material has a wide range of applications in high temperature kiln industry, and the high temperature kiln industry repair time is all very limited.By cement industry, large slender two weeks, little length three or four days, the construction of refractory materials seems hastily especially, many places construction while in addition overhauling, staff is limited, and vibration construction is relatively slow again, so task is very heavy.In order to finish the work on time, accelerate speed of application, when the most frequently used method is constructed exactly, mould material is added water, improve mobility, convenient construction, but therefore tend to cause mould material segregation, top layer efflorescence, the situation such as explosion during baking, affects the whole use properties of mould material greatly.
Gravity flow pouring material, refers to that it is feature that low cement, ultra-low cement or non-cement refractory castable be take its mixed mobility, has the low cement of this mobility or ultra-low cement refractory castable without applying that external force can flow and degassed, and without obviously segregation.Because gravity flow pouring material has good mobility, caused in recent years people's concern, it only just can be filled by self gravitation, thereby than low cement deposit material, have more advantage in many occasions without vibrating.
CN 101139209A discloses a kind of fire-resistant gravity flow pouring material and preparation method thereof.The technical scheme that this invention adopts is: by the electric smelting ceramsite sand of the corundum fine powder of the alumina fine powder of the alumina particle of 35～55wt%, 5～20wt%, 5～25wt%, 5～30wt%, the pure calcium aluminate cement of 2～10wt%, α-Al of the silicon powder of 2～6wt%, 2～10wt%
2o
3the water reducer of micro mist, 0.1～0.2wt% mixes, and stirs and makes.
Gravity flow pouring material is that micro mist is added in utilization in traditional vibrating casting material and admixture reduces its amount of water and the flowing property that improves mould material.Conventional micro mist mainly contains SiO
2micro mist is mainly to reduce amount of water and increase flowing property by filling space; Admixture is mainly to add as water reducer, dispersion agent, dispergator etc., be all mainly water-soluble after, by being adsorbed on particle surface, improve the ζ-potential of particle surface, increase interparticle mutual repulsive force, discharge the free-water wrapping up in the molecular agglutinate structure of particulate, or make dispersed the opening of colloidal particle, solids that originally flocked together, thereby reach diminishing and improve the object of mobility.So, reach a kind of better diminishing and improve mobility effect, will find micro mist that some activity are larger and (or) admixture that some dispersive abilities are stronger.
Summary of the invention
For the deficiencies in the prior art, one of object of the present invention is to provide a kind of micro-expansion self-levelling castable, make mould material rely on self gravitation can reach Self-leveling, self-exhausting, without vibration, reduce construction labour intensity, and at high temperature produced microdilatancy, improved refractory materials high-temperature behavior, to meet convenient construction, and do not affect the work-ing life of mould material.
Micro-expansion self-levelling castable provided by the present invention, contains:
Wherein, corundum is that bauxitic clay is the artificial material that main raw material is produced through mining industry stove, can do abrasive material and refractory materials.Described corundum is commercially available corundum refractory raw material, can be fused corundom or alundum.Described alumina is commercially available alumine refractory raw material.
Andaluzite, silicon carbide, alumina powder, silicon ash, aluminate cement all can be by the commercially available refractory materials obtaining.
The present invention is by utilizing the features such as andaluzite particle self class spherical form, water-intake rate are low, the aggregate using it as gravity flow pouring material, thus reduce water requirement, improve flowing property; Add a certain amount of Reactive alumina Substitute For Partial SiO
2micro mist, utilizes its fineness to increase active, utilizes its double-peak feature to reach better filling effect, and has reduced SiO
2the add-on of micro mist, the high-temperature behavior of raising material; Control cement mixing content, make CaO mass content 1.0～2.5%, reach the level of low cement deposit material, improve high-temperature behavior; Add appropriate andaluzite, utilize the high-temperature expansion of andaluzite, offset material at high temperature and shrink, reach microdilatancy state; Utilize andaluzite pyrolytic conversion to form mullite, improve the performance index such as thermal shock resistance of material.
As optimal technical scheme, gravity flow pouring material provided by the present invention, also contains said mixture total amount:
Organic fibre 0～0.2wt%
Dispersion agent 0.4～1.2wt%
Water 3～8wt%.
As optimal technical scheme, the organic fibre described in gravity flow pouring material provided by the present invention is explosion-proof organic fibre.Organic fibre is the fiber of being made by organic polymer or the fiber that utilizes natural polymer to make through chemical treatment, and as viscose fiber, polyamide fibre, terylene and aramid fiber etc., this fiber is also referred to as regenerated fibre or man-made fiber.
Explosion-proof fiber be a kind of by special process, process there is stretch-proof, shock-resistant, improve bulk strength, hydrophobic, exhaust, anti-be full of cracks, explosion-proof, shorten baking cycle, simplify temperature-rise period, improve a kind of specialty fibers of whole service life, fiber as explosion-proof in polypropylene.In mould material provided by the present invention, add explosion-proof fiber, make to mix with other refractory materials when it, and after moulding, toast, along with storing temperature constantly raises, and this fiber had both started to soften while reaching certain temperature, shrank, fusing, finally formed pore carbonization, thereby distribute and form small network pore in construction body, open aqueous vapor passage, alleviate internal stress, thereby prevent explosion.
As optimal technical scheme, the dispersion agent described in gravity flow pouring material provided by the present invention is dispersed aluminum oxide, is preferably the mixture of short solidifying dispersed aluminum oxide and the dispersed aluminum oxide of slow setting.Dispersion agent is a kind of interfacial agent simultaneously in molecule with lipophilicity and two kinds of opposite nature of wetting ability.Can disperse those inorganic, organic solid particulates that is difficult to be dissolved in liquid by homogeneous, also can prevent sedimentation and the cohesion of solid particulate simultaneously, form the required medicament of stable suspension.
Adopt dispersed aluminum oxide and activated alumina as compound use, can increase the dispersion effect of activated alumina, thereby improve flowing property; Adopt short solidifying and two kinds of dispersed alumina composites uses of slow setting, adjust consumption, control rational setting time.
Activated alumina and dispersed alumina composite are used, a kind of dispersion, diminishing method that is different from traditional admixture, it adopts aluminum oxide is carrier, can improve the ζ-potential on micro mist surface, by Coulomb repulsion, reaches dispersion, can form again the organic polymer chain of certain length, by space bit, rent to reach dispersion effect, the eutectic impurity of both having avoided traditional admixture to bring into, is conducive to the high-temperature behavior of material, reach again better dispersion, water-reducing effect, increased flowing property.
As optimal technical scheme, the alumina micro mist described in gravity flow pouring material provided by the present invention is that fineness is not less than 600 object bauxitic clay powders.Described bauxitic clay powder can obtain by commercially available.
As optimal technical scheme, the particle diameter d of the Reactive alumina described in gravity flow pouring material provided by the present invention
50≤ 2.0 μ m, true density>=3.95g/cm
3, Na
2o content≤0.1wt%.
Described Reactive alumina can obtain by commercially available, wherein particle diameter d
50for accounting for the small-particle and the oarse-grained boundary size that accounts for total amount 50% of total amount 50% in powder.The present invention is by utilizing the particle diameter d of described Reactive alumina
50≤ 2.0 μ m, true density>=3.95g/cm
3, Na
2the mould material that O content≤0.1wt% makes, can obtain better dispersion, water-reducing effect, has increased flowing property, thereby obtains superior workability.
One of object of the present invention is also to provide a kind of using method of mould material of the present invention, by described proportioning, after each solid material is weighed, mixed and stirred, pours stirrer into; The water that adds again regulation forms needed globality refractory materials lining body after stirring, batch turning, transportation, pouring, the demoulding, maintenance, baking.
Micro-expansion self-levelling castable provided by the present invention is to using corundum (or alumina) and andaluzite as filler, and employing aluminate cement is bonding agent, by adding Reactive alumina, silicon ash and dispersed aluminum oxide, obtains superior workability.Micro-expansion self-levelling castable provided by the present invention can be used for high temperature kiln engineering, in use make mould material rely on self gravitation can reach Self-leveling, self-exhausting, without vibration, reduced construction labour intensity, and at high temperature produce microdilatancy, improve refractory materials high-temperature behavior, to meet convenient construction, and do not affected mould material work-ing life.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand, described embodiment only, for helping to understand the present invention, should not be considered as concrete restriction of the present invention.
Embodiment mono-
Weight proportion is: 5-1mm fused corundom 30%, 3-1mm andaluzite 15%, 1-0.088mm fused corundom 20%, < 0.088mm fused corundom 12%, < 0.088mm silicon carbide 1%, alumina powder 10%, activated alumina 5%, aluminate cement 7%, the short solidifying dispersed aluminum oxide 0.4% of additional said mixture total amount, the dispersed aluminum oxide 0.4% of slow setting, organic fibre 0.08%, water 5.36%.
By said ratio, solid material, after weighing, mixing and stirring, is poured stirrer into; Add again silicon sol and the water of regulation, after stirring, batch turning, transportation, pouring, the demoulding, maintenance, make lining body, then heat-treat rear test physicals.When 20 ℃ of left and right, this mould material from flow valuve, reach 183.5mm, the physicals of surveying is: 110 ℃ * 24h is dry: folding strength 12.9MPa, compressive strength 105.4MPa; 1100 ℃ * 3h is dry: folding strength 14.1MPa, and compressive strength 113.2MPa, line changes-0.09%; 1350 ℃ * 3h is dry: folding strength 15.6MPa, and compressive strength 152.7MPa, line changes+0.12%.
From the above, mould material has good gravity flow workability, and other physical and chemical performances have all met service requirements.
Embodiment bis-
Weight proportion is: 5-1mm alumine 21%, 3-1mm andaluzite 21%, 1-0.088mm alumine 21%, < 0.088mm alumine 12%, < 0.088mm silicon carbide 3%, alumina powder 8%, activated alumina 5%, silicon ash 2%, aluminous cement 7%, the short solidifying dispersed aluminum oxide 0.4% of additional said mixture total amount, the dispersed aluminum oxide 0.4% of slow setting, organic fibre 0.08%, water 5.68%.
By said ratio, solid material, after weighing, mixing and stirring, is poured stirrer into; Add again silicon sol and the water of regulation, after stirring, batch turning, transportation, pouring, the demoulding, maintenance, make lining body, then heat-treat rear test physicals.When 20 ℃ of left and right, this mould material from flow valuve, reach 203mm, the physicals of surveying is: 110 ℃ * 24h is dry: folding strength 11.3MPa, compressive strength 105.3MPa; 1100 ℃ * 3h is dry: folding strength 13.5MPa, and compressive strength 110.9MPa, line changes-0.14%; 1350 ℃ * 3h is dry: folding strength 14.3MPa, and compressive strength 132.1MPa, line changes+0.07%.
From the above, mould material has good gravity flow workability, and other physical and chemical performances have all met service requirements.
Embodiment tri-
Weight proportion is: 5-1mm alumine 36%, 3-1mm andaluzite 12%, 1-0.088mm alumine 15%, < 0.088mm alumine 15%, alumina powder 5%, activated alumina 8%, silicon ash 5%, aluminous cement 4%, the short solidifying dispersed aluminum oxide 0.5% of additional said mixture total amount, the dispersed aluminum oxide 0.3% of slow setting, organic fibre 0.1%, water 4.8%.
Through performance test, mould material has good gravity flow workability, and other physical and chemical performances have all met service requirements.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to the selection of the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (7)
1. a micro-expansion self-levelling castable, is characterized in that, contains:
The particle diameter d of described Reactive alumina
50≤ 2.0 μ m, true density>=3.95g/cm
3, Na
2o content≤0.1wt%.
2. mould material as claimed in claim 1, is characterized in that, also contains said mixture total amount:
Organic fibre 0～0.2wt%
Dispersion agent 0.4～1.2wt%
Water 3～8wt%.
3. mould material as claimed in claim 2, is characterized in that, described organic fibre is explosion-proof organic fibre.
4. mould material as claimed in claim 2, is characterized in that, described dispersion agent is dispersed aluminum oxide.
5. mould material as claimed in claim 4, is characterized in that, described dispersed aluminum oxide is the mixture of short solidifying dispersed aluminum oxide and the dispersed aluminum oxide of slow setting.
6. the mould material as described in claim 1～5 any one, is characterized in that, described alumina micro mist is that fineness is not less than 600 object bauxitic clay powders.
7. the using method of the mould material as described in claim 1～6 any one, is characterized in that, by described proportioning, after each solid material is weighed, mixed and stirred, pours stirrer into; The water that adds again regulation forms needed globality refractory materials lining body after stirring, batch turning, transportation, pouring, the demoulding, maintenance, baking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110400300.5A CN102557681B (en) | 2011-12-06 | 2011-12-06 | Micro-expansion self-levelling castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110400300.5A CN102557681B (en) | 2011-12-06 | 2011-12-06 | Micro-expansion self-levelling castable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102557681A CN102557681A (en) | 2012-07-11 |
| CN102557681B true CN102557681B (en) | 2014-02-12 |
Family
ID=46404469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110400300.5A Active CN102557681B (en) | 2011-12-06 | 2011-12-06 | Micro-expansion self-levelling castable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102557681B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058681B (en) * | 2013-01-11 | 2014-10-22 | 成都蜀冶新材料有限责任公司 | Andalusite refractory castable and application method thereof |
| CN103785820B (en) * | 2014-02-17 | 2016-02-10 | 莱芜钢铁集团有限公司 | A kind of ladle permanent liner and preparation method thereof |
| CN104086185A (en) * | 2014-06-06 | 2014-10-08 | 甘肃酒钢集团科力耐火材料股份有限公司 | Silica-fume-free self-flow casting material |
| CN105753490A (en) * | 2016-03-11 | 2016-07-13 | 鹤壁市荣铭科技有限公司 | Tap hole medium-temperature-sintering environment-friendly stemming for large- and medium-sized blast furnaces and preparation method of tap hole medium-temperature-sintering environment-friendly stemming |
| CN106187245A (en) * | 2016-07-25 | 2016-12-07 | 宜兴市中环耐火材料有限公司 | A kind of low aluminum micron wear-resistant castable |
| CN106380212B (en) * | 2016-08-30 | 2019-11-08 | 安徽瑞泰新材料科技有限公司 | A kind of high-performance gravity flow pouring material |
| CN106630920A (en) * | 2016-10-11 | 2017-05-10 | 洛阳万基炭素有限公司 | Micro-expansion plasticizing material and construction technology of micro-expansion plasticizing material |
| CN109678436A (en) * | 2019-01-01 | 2019-04-26 | 中国人民解放军63653部队 | A kind of high temperature resistant Hearth Furnace self-leveling concrete pouring material |
| CN109650921A (en) * | 2019-02-22 | 2019-04-19 | 江苏江能新材料科技有限公司 | A kind of gravity flow castable and preparation method thereof |
| CN113135722B (en) * | 2021-05-14 | 2023-03-03 | 焦作金鑫恒拓新材料股份有限公司 | Self-flowing heat-resistant concrete using reclaimed materials |
| CN116768610A (en) * | 2023-06-30 | 2023-09-19 | 本溪钢铁（集团）矿业有限责任公司 | Formula and preparation method of refractory material for repairing pellet production line equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0437483B1 (en) * | 1988-10-05 | 1993-08-11 | Comalco Aluminium, Ltd. | Low cement refractory |
| CN101665366A (en) * | 2009-10-20 | 2010-03-10 | 瑞泰科技股份有限公司 | Composite abrasion resistant and thermal shock resistant pouring material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101784A (en) * | 2011-02-22 | 2011-06-22 | 佘成其 | Lightweight reformed main iron runner pouring material |
-
2011
- 2011-12-06 CN CN201110400300.5A patent/CN102557681B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0437483B1 (en) * | 1988-10-05 | 1993-08-11 | Comalco Aluminium, Ltd. | Low cement refractory |
| CN101665366A (en) * | 2009-10-20 | 2010-03-10 | 瑞泰科技股份有限公司 | Composite abrasion resistant and thermal shock resistant pouring material |
Non-Patent Citations (1)
| Title |
|---|
| 中国冶金百科全书总编辑委员会《耐火材料卷》编辑委员会等.耐火骨料.《中国冶金百科全书（耐火材料）》.冶金工业出版社,1997,第262页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102557681A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102557681B (en) | Micro-expansion self-levelling castable | |
| CN102491771B (en) | Composite castable refractory | |
| CN101805198B (en) | Mullite steel fiber castable | |
| CN104640823B (en) | Agglutination material, activator and the method for preparing concrete | |
| CN102850063B (en) | High-strength anti-stripping castable with homogeneous material as aggregate for kilneye and preparation method thereof | |
| CN106380212B (en) | A kind of high-performance gravity flow pouring material | |
| CN101935221A (en) | Low apparent porosity corundum refractory castable | |
| CN109279861B (en) | Self-compacting composite concrete, preparation method thereof and concrete wall brick | |
| CN101397212A (en) | Refractory castable of nanocomposite oxide ceramic combining alumina-spinelle and preparation method thereof | |
| CN104086198B (en) | A kind of glass furnace Apyre flame-proof material and goods thereof | |
| Gogtas et al. | Effect of nano-YSZ and nano-ZrO2 additions on the strength and toughness behavior of self-flowing alumina castables | |
| CN102746003A (en) | High-strength alkali-resistant refractory castable | |
| CN102295460A (en) | Making method of high-strength alumina magnesia spinel pouring material for ladles | |
| CN111574103A (en) | Multi-component composite synergist for sprayed concrete and preparation method thereof | |
| CN101875561B (en) | Nano-SiO2 and nano-CaO composite ceramic bond siliceous refractory castable and preparation method thereof | |
| CN101602595A (en) | Silicasol-combined corundum castable and prepare the method for abrasion-proof prefabricated component | |
| CN108585714A (en) | It is a kind of using ardealite base hydraulicity composite gel material as the boundary mortar of agglutination material | |
| CN110078431A (en) | Anti- isolation high-strength heat-insulating concrete of one kind and preparation method thereof | |
| CN103880451A (en) | Swing spout castable for blast furnace and preparation process thereof | |
| CN114409348B (en) | High-temperature high-strength heat-resistant concrete and preparation method and application thereof | |
| CN101633572A (en) | Modified cement mortar | |
| CN104193377A (en) | Early strength anti-detonation fireproof self-flow material | |
| CN114195529B (en) | High-strength magnesia refractory mortar for refining ladle | |
| CN103551496B (en) | Anhydrous water-base forsterite powder paint | |
| KR20180132691A (en) | Aggregate for refractory, method for producing the same, and refractory using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |