CN104311056A - Mullite fiber refractory casting material - Google Patents
Mullite fiber refractory casting material Download PDFInfo
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- CN104311056A CN104311056A CN201410523297.XA CN201410523297A CN104311056A CN 104311056 A CN104311056 A CN 104311056A CN 201410523297 A CN201410523297 A CN 201410523297A CN 104311056 A CN104311056 A CN 104311056A
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- aggregate
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- mullite
- binding agent
- coarse aggregate
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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
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
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- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a mullite fiber refractory casting material which comprises the following components in parts by weight: 10-20 parts of coarse aggregate, 30-35 parts of medium aggregate, 15-20 parts of fine aggregate, 5-10 parts of a binding agent, 5-10 parts of silica micro powder, 10-15 parts of alumina micro powder and 5-10 parts of yttrium oxide, wherein the coarse aggregate comprises mullite and zirconium oxide fiber; the medium aggregate comprises flint clay, silicon carbide and zircon; the fine aggregate is mullite. The binding agent comprises the following components in parts by weight: 20-40 parts of magnesium silicate and 80-60 parts of phosphate.
Description
Technical field
The invention belongs to technical field of refractory materials, particularly relate to a kind of mullite fiber refractory castable.
Background technology
The mould material that existing domestic new type nonaqueous cement production line kiln head cover position uses is High-Alumina material, although the mould material of this kind of material at high temperature intensity is high, wear resistance is good, but high alumina refractories at high temperature forms the mineral facies based on corundum, corundum phase at high temperature easy and alkali reacts, thus produces volumetric expansion, and deformation occurs, there is stress concentration, the consequence such as cause wadding crack, peel off.Because kiln head cover place in rotary system is constantly heated washing away of grog, add the frequent change of thermal parameter, the work-ing life of kiln head cover top refractory materials is general shorter, generally at about 1 year, badly influences the operation factor of whole kiln system.
Summary of the invention
In view of this, for the deficiencies in the prior art, the invention provides the mullite fiber refractory castable of a kind of resist chemical and wear resisting property excellence.
A kind of mullite fiber refractory castable, comprise coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder, yttrium 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, yttrium oxide 5 ~ 10.Wherein, coarse aggregate comprises mullite, Zirconium oxide fibre; Middle aggregate comprises flint clay, silicon carbide and zircon, and fine aggregate is mullite; Wherein, binding agent comprises following parts by weighbf component: Magnesium Silicate q-agent 20 ~ 40, phosphoric acid salt 80 ~ 60.
Mullite fiber refractory castable of the present invention utilizes the heat-resistant knocking stability of mullite to improve the heat-resistant knocking stability of mullite fiber refractory castable, add Reactive alumina and accelerate solid state reaction, adding zircon is because it can improve resistance to spallation and erosion resistance, that is, about 1500 DEG C time, zircon starts to decompose, become zirconium white and silicon-dioxide, aluminum oxide in high grade bauxite and magnesium oxide react and carry out calcining and generates spinel, simultaneous oxidation zirconium can make up the microfracture that microfracture produces, utilizing yttrium oxide under the prerequisite keeping the stability of Zirconium oxide fibre in addition, product Zirconium oxide fibre being done and transform under high temperature is combined closely, resist chemical and the wear resisting property of mullite fiber refractory castable is improved with this.
Embodiment
A kind of mullite fiber refractory castable, comprise coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder, yttrium 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, yttrium oxide 5 ~ 10.Wherein, coarse aggregate comprises mullite, Zirconium oxide fibre; Middle aggregate comprises flint clay, silicon carbide and zircon, and fine aggregate is mullite; Wherein, binding agent comprises following parts by weighbf component: Magnesium Silicate q-agent 20 ~ 40, phosphoric acid salt 80 ~ 60; In coarse aggregate, the parts by weight of each material are: mullite 80 ~ 60, Zirconium oxide fibre 20 ~ 40.
Refractory materials is in order to reach desirable fireproof high-temperature resistant effect, the structure formation of what is called " dense accumulation " must be formed, this structure formation is thick, middle aggregate by occupying space, material large portion, the fine aggregate in thick, the middle aggregate space of filling, the micro mist in the carse, medium and small aggregate space of filling obtain, therefore select very important to the particle diameter of refractory castable kinds of ingredients, in the present embodiment, in described coarse aggregate, the size of mullite is 3.0 ~ 2.1mm, the length of Zirconium oxide fibre is 3.0 ~ 2.1mm; In described middle aggregate, the size of each component is 1.9mm ~ 1mm; The size of described fine aggregate is 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 ~ Al
2o
3physico-chemical property is d≤2.0 μm, true density>=3.95g/cm, Na O is less than or equal to 0.1%, activated alumina can make the refractory castable apparent porosity of cast less, further, utilize silicon carbide high thermal conductivity to improve the heat-shock resistance of mould material, and by the oxidation of silicon carbide, form one deck SiO at refractory surface
2settling shutoff pore, utilizes silicon powder shutoff refractory casting material layer internal porosity, improves the resistance to fouling of refractory casting material with this.
Below illustrate above-mentioned mullite fiber refractory castable:
Embodiment 1
(1) preparation of mould material:
Aggregate 35,0.6mm fine aggregate 15 in 3.0mm coarse aggregate 10,1.9mm, binding agent 10, silicon powder 10, alumina powder 15, yttrium oxide 5.By said ratio, add water after each raw material is weighed companion and, obtaining the slurry of good fluidity, testing physicals through being shaped, after maintenance and thermal treatment.
(2) quantitative measurement:
After 110 DEG C × 24h is dried, folding strength 9.1MPa, compressive strength 85.1MPa;
After 1200 DEG C × 3H process, folding strength 11.4MPa, compressive strength 115.6MPa;
After 1550 DEG C × 3H process, folding strength 12.1MPa, compressive strength 125.8MPa.
Embodiment 2
(1) preparation of mould material:
Adopt aggregate 30,0.1mm fine aggregate 15 in 2.1mm coarse aggregate 20,1mm, binding agent 8, silicon powder 7, alumina powder 10, yttrium oxide 10.By said ratio, add water after each raw material is weighed companion and, obtaining the slurry of good fluidity, testing physicals through being shaped, after maintenance and thermal treatment.
(2) physicals detects:
After 110 DEG C × 24h is dried, folding strength 9.2MPa, compressive strength 86.2MPa;
After 1200 DEG C × 3H process, folding strength 11.6MPa, compressive strength 115.9MPa;
After 1550 DEG C × 3H process, folding strength 12.9MPa, compressive strength 128.8MPa.
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 (3)
1. a mullite fiber refractory castable, it is characterized in that: comprise coarse aggregate, middle aggregate, fine aggregate, binding agent, silicon powder, alumina powder, yttrium 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, yttrium oxide 5 ~ 10; Wherein, coarse aggregate comprises mullite, Zirconium oxide fibre; Middle aggregate comprises flint clay, silicon carbide and zircon, and fine aggregate is mullite.
2. mullite fiber refractory castable according to claim 1, is characterized in that: wherein, and binding agent comprises following parts by weighbf component: Magnesium Silicate q-agent 20 ~ 40, phosphoric acid salt 80 ~ 60; In coarse aggregate, the parts by weight of each material are: mullite 80 ~ 60, Zirconium oxide fibre 20 ~ 40.
3. mullite fiber refractory castable according to claim 2, is characterized in that: in described coarse aggregate, the size of mullite is 3.0 ~ 2.1mm, the length of Zirconium oxide fibre is 3.0 ~ 2.1mm; In described middle aggregate, the size of each component is 1.9mm ~ 1mm; The size of described fine aggregate 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 |
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| Publication Number | Publication Date |
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| CN104311056A true CN104311056A (en) | 2015-01-28 |
| CN104311056B CN104311056B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410523297.XA Active CN104311056B (en) | 2014-10-08 | 2014-10-08 | Mullite fiber castable refractory |
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Cited By (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 |
| 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 |
| CN112759375A (en) * | 2019-11-05 | 2021-05-07 | 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001080969A (en) * | 1999-07-13 | 2001-03-27 | Nichias Corp | Nonlithic refractory raw material and monolithic refractries |
| 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 |
| CN103819203A (en) * | 2013-10-31 | 2014-05-28 | 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 |
-
2014
- 2014-10-08 CN CN201410523297.XA patent/CN104311056B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001080969A (en) * | 1999-07-13 | 2001-03-27 | Nichias Corp | Nonlithic refractory raw material and monolithic refractries |
| 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 |
| CN103819203A (en) * | 2013-10-31 | 2014-05-28 | 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 |
Cited By (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 |
| CN112759375A (en) * | 2019-11-05 | 2021-05-07 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104311056B (en) | 2016-08-24 |
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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. |