CN104311056B - Mullite fiber castable refractory - Google Patents
Mullite fiber castable refractory Download PDFInfo
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- CN104311056B CN104311056B CN201410523297.XA CN201410523297A CN104311056B CN 104311056 B CN104311056 B CN 104311056B CN 201410523297 A CN201410523297 A CN 201410523297A CN 104311056 B CN104311056 B CN 104311056B
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- aggregate
- mullite
- binding agent
- coarse aggregate
- castable refractory
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
Abstract
A kind of mullite fiber castable refractory, including coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder, yittrium oxide, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 10～20, middle aggregate 30～35, fine aggregate 15～20, binding agent 5～10, silicon powder 5～10, alumina powder 10～15, yittrium oxide 5～10.Wherein, coarse aggregate includes mullite, Zirconium oxide fibre；Middle aggregate includes flint clay, carborundum and zircon, and fine aggregate is mullite；Wherein, binding agent includes following parts by weighbf component: magnesium silicate 20～40, phosphate 80～60.
Description
Technical field
The invention belongs to technical field of refractory materials, particularly relate to a kind of mullite fiber castable refractory.
Background technology
The castable that existing domestic new type nonaqueous cement production line kiln head cover position uses is High-Alumina material, this kind of material
Although the castable of matter at high temperature intensity is high, wearability is good, but high alumina refractories is at high temperature formed based on corundum
Mineral facies, corundum at high temperature easily reacts with alkali mutually, thus produces volumetric expansion, deforms upon, occur that stress is concentrated,
Cause the consequences such as wadding crack, peeling.Due to washing away of the grog that is constantly heated at kiln head cover in rotary system, add thermal technology
The frequent change of parameter, the service life of kiln head cover top refractory material is the shortest, typically at about 1 year, badly influences
The running rate of whole kiln system.
Summary of the invention
In view of this, for the deficiencies in the prior art, the present invention provides a kind of resist chemical and anti-wear performance excellent
Mullite fiber castable refractory.
A kind of mullite fiber castable refractory, including coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, oxidation
Aluminum micropowder, yittrium oxide, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 10～20, middle aggregate 30～35, fine aggregate 15～
20, binding agent 5～10, silicon powder 5～10, alumina powder 10～15, yittrium oxide 5～10.Wherein, coarse aggregate includes not coming
Stone, Zirconium oxide fibre；Middle aggregate includes flint clay, carborundum and zircon, and fine aggregate is mullite；Wherein, binding agent include with
Lower parts by weighbf component: magnesium silicate 20～40, phosphate 80～60.
Mullite fiber castable refractory of the present invention is to utilize the heat-resistant knocking stability of mullite to improve not come
The heat-resistant knocking stability of mineral wool castable refractory, adds Reactive alumina and accelerates solid state reaction, adds zircon and is because
It can improve resistance to spallation and corrosion resistance, that is, when about 1500 DEG C, zircon starts to decompose, becomes zirconium oxide
And silicon dioxide, the aluminium oxide in high grade bauxite reacts with magnesium oxide and carries out calcining and generates spinelle, and simultaneous oxidation zirconium is permissible
Make up the microcrack that microcrack produces, additionally utilize yittrium oxide on the premise of keeping the stability of Zirconium oxide fibre so that
Zirconium oxide fibre is made to combine closely with the product of conversion under high temperature, improves the anti-chemistry of mullite fiber castable refractory with this
Corrosion and anti-wear performance.
Detailed description of the invention
A kind of mullite fiber castable refractory, including coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, oxidation
Aluminum micropowder, yittrium oxide, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 10～20, middle aggregate 30～35, fine aggregate 15～
20, binding agent 5～10, silicon powder 5～10, alumina powder 10～15, yittrium oxide 5～10.Wherein, coarse aggregate includes not coming
Stone, Zirconium oxide fibre；Middle aggregate includes flint clay, carborundum and zircon, and fine aggregate is mullite；Wherein, binding agent include with
Lower parts by weighbf component: magnesium silicate 20～40, phosphate 80～60；In coarse aggregate, the parts by weight of each material are: mullite 80
～60, Zirconium oxide fibre 20～40.
Refractory material, in order to reach preferable fireproof high-temperature resistant effect, must form the structure shape of what is called " dense accumulation "
Formula, this version is by occupying the aggregate thick, middle in space, material big portion, the fine aggregate in filling aggregate space thick, middle, filling
Fill out what the micropowder in carse, medium and small aggregate space obtained, therefore the particle diameter of castable refractory kinds of ingredients is selected critically important,
In present embodiment, in described coarse aggregate the size of mullite be 3.0～2.1mm, a length of the 3.0 of Zirconium oxide fibre～
2.1mm；In described middle aggregate, the size of each component is 1.9mm～1mm；The size of described fine aggregate be 0.6～
0.1mm。
The alumina powder added in the present invention is activated alumina, and the principal crystalline phase of activated alumina is α～Al2O3, reason
Change character be d≤2.0 μm, true density >=3.95g/cm, Na O less than or equal to 0.1%, activated alumina can make cast
Castable refractory apparent porosity less, further, utilize carborundum high-termal conductivity to improve the thermal shock resistance of castable, and
By the oxidation of carborundum, form one layer of SiO at refractory surface2Deposit closure pore, utilizes silicon powder closure fire-resistant
Mould material layer internal porosity, improves the corrosion resistance of refractory casting material with this.
Above-mentioned mullite fiber castable refractory illustrated below:
Embodiment 1
(1) preparation of castable:
3.0mm coarse aggregate 10, aggregate 35 in 1.9mm, 0.6mm fine aggregate 15, binding agent 10, silicon powder 10, aluminium oxide is micro-
Powder 15, yittrium oxide 5.By said ratio, add water after each raw material is weighed companion and, it is thus achieved that the slurry of good fluidity, shaped, support
Protect and test physical property after heat treatment.
(2) quantitative measurement:
After 110 DEG C × 24h is dried, rupture strength 9.1MPa, compressive resistance 85.1MPa；
After 1200 DEG C × 3H processes, rupture strength 11.4MPa, compressive resistance 115.6MPa；
After 1550 DEG C × 3H processes, rupture strength 12.1MPa, compressive resistance 125.8MPa.
Embodiment 2
(1) preparation of castable:
Using 2.1mm coarse aggregate 20, aggregate 30 in 1mm, 0.1mm fine aggregate 15, binding agent 8, silicon powder 7, aluminium oxide is micro-
Powder 10, yittrium oxide 10.By said ratio, add water after each raw material is weighed companion and, it is thus achieved that the slurry of good fluidity, shaped,
Physical property is tested after maintenance and heat treatment.
(2) physical property detection:
After 110 DEG C × 24h is dried, rupture strength 9.2MPa, compressive resistance 86.2MPa；
After 1200 DEG C × 3H processes, rupture strength 11.6MPa, compressive resistance 115.9MPa；
After 1550 DEG C × 3H processes, rupture strength 12.9MPa, compressive resistance 128.8MPa.
As described above, only presently preferred embodiments of the present invention, when not limiting, with this, the model that the present invention implements
Enclose, the simple equivalence change the most generally made according to scope of the present invention patent and invention description content and modification, the most still belong to
In the range of patent of the present invention contains.
Claims (1)
1. a mullite fiber castable refractory, it is characterised in that: include coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon
Micropowder, alumina powder, yittrium oxide, wherein the parts by weight of above-mentioned raw materials are: coarse aggregate 10～20, middle aggregate 30～35, carefully
Aggregate 15～20, binding agent 5～10, silicon powder 5～10, alumina powder 10～15, yittrium oxide 5～10；Wherein, coarse aggregate
Including mullite, Zirconium oxide fibre；Middle aggregate includes flint clay, carborundum and zircon, and fine aggregate is mullite；Wherein, bonding
Agent includes following parts by weighbf component: magnesium silicate 20～40, phosphate 80～60；In coarse aggregate, the parts by weight of each material are:
Mullite 80～60, Zirconium oxide fibre 20～40；In described coarse aggregate the size of mullite be 3.0～2.1mm, zirconium oxide
A length of the 3.0 of fiber～2.1mm；In described middle aggregate, the size of each component is 1.9mm～1mm；Described fine aggregate
Size is 0.6～0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523297.XA CN104311056B (en) | 2014-10-08 | 2014-10-08 | Mullite fiber castable refractory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523297.XA CN104311056B (en) | 2014-10-08 | 2014-10-08 | Mullite fiber castable refractory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104311056A CN104311056A (en) | 2015-01-28 |
| CN104311056B true CN104311056B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410523297.XA Active CN104311056B (en) | 2014-10-08 | 2014-10-08 | Mullite fiber castable refractory |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678537A (en) * | 2019-01-25 | 2019-04-26 | 江苏长城窑炉工程有限公司 | A kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material |
| CN112759375B (en) * | 2019-11-05 | 2022-07-08 | 宜兴市中电耐磨耐火科技有限公司 | High-absorptivity and high-thermal-conductivity silicon carbide wear-resistant castable and preparation process thereof |
| CN111484348A (en) * | 2020-06-01 | 2020-08-04 | 无锡市宝宜耐火材料有限公司 | Mullite fiber toughened Al for blast furnace tapping channel2O3-SiC-C refractory castable and preparation method thereof |
| CN112624747A (en) * | 2020-12-31 | 2021-04-09 | 长兴兴鹰新型耐火建材有限公司 | High-strength, corrosion-resistant and scouring-resistant castable for waste incineration kiln and preparation method thereof |
| CN115819097A (en) * | 2022-12-21 | 2023-03-21 | 浙江锦诚新材料股份有限公司 | Zirconium-mullite composite silicon carbide castable for garbage incinerator and prefabricated part |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3741595B2 (en) * | 1999-07-13 | 2006-02-01 | ニチアス株式会社 | Unshaped refractory raw material and unshaped refractory |
| CN103553679A (en) * | 2013-10-31 | 2014-02-05 | 宁夏天纵泓光余热发电技术有限公司 | Light mullite refractory coating |
| CN103819203B (en) * | 2013-10-31 | 2015-06-24 | 江苏顺星耐火科技有限公司 | Mullite high-strength refractory castable |
| CN103964865A (en) * | 2014-04-22 | 2014-08-06 | 中国地质大学（北京） | Preparation method for light-weight porous mullite refractory castable |
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Address after: 750002 Yinchuan Ningfeng District, the Ningxia Hui Autonomous Region 490, Yinchuan IBI breeding center two phase 10, 3 floor 301 room. Patentee after: Ningxia renle Hongguang cogeneration technology Limited by Share Ltd Address before: 750021 the Ningxia Hui Autonomous Region Yinchuan Xixia Industrial Park Jin Bo South Road Chuangxin crane hospital Patentee before: Ningxia Tianzong Hongguang Cogeneration Technology Co., Ltd. |
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