CN111454016A - Thermal equipment gap-filling agent and preparation method thereof - Google Patents
Thermal equipment gap-filling agent and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000945 filler Substances 0.000 title 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 31
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000008439 repair process Effects 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 239000011812 mixed powder Substances 0.000 claims description 12
- 239000011268 mixed slurry Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011049 filling Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 8
- 239000000565 sealant Substances 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 240000007643 Phytolacca americana Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000012769 bulk production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
- C04B2111/00672—Pointing or jointing materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Ceramic Products (AREA)
Abstract
本发明提供了一种热工设备补缝剂，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份2％‑10％浓度的聚乙烯醇溶液和60份25％‑40％浓度的硅溶胶。本发明将氧化铝粉、莫来石短纤维、硅粉、聚乙烯醇和硅溶胶混合，在高温条件下能够在表面形成一层氧化硅膜层，起到密封、隔离和保护作用；硅粉高温氧化伴随体积膨胀，起到充满缝隙边角的效果，从而起到填充缝隙防止漏风的作用；同时，还具有一定的隔热效果，防止热量传导，进而起到节能作用；此外，补缝剂的原料来源广泛、制备工艺简单、制备成本低廉，有利于在线生产热工设备的即时维护。The invention provides a seam repairing agent for thermal equipment, which comprises the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, 50 parts of 2%-10% concentration of Polyvinyl alcohol solution and 60 parts of 25%-40% strength silica sol. The invention mixes alumina powder, mullite short fiber, silicon powder, polyvinyl alcohol and silica sol, and can form a silicon oxide film layer on the surface under high temperature conditions, which plays the role of sealing, isolation and protection; Oxidation is accompanied by volume expansion, which fills the gaps and corners, thus filling the gaps and preventing air leakage; at the same time, it also has a certain thermal insulation effect to prevent heat conduction, thereby saving energy. The raw material sources are wide, the preparation process is simple, and the preparation cost is low, which is beneficial to the immediate maintenance of the thermal equipment for on-line production.
Description
技术领域technical field
本发明涉及功能材料的技术领域，更具体地，涉及一种热工设备补缝剂及其制备方法。The present invention relates to the technical field of functional materials, and more particularly, to a thermal equipment seam repair agent and a preparation method thereof.
背景技术Background technique
目前，工业窑炉的水泥、玻璃、钢铁等大宗生产行业对节能降耗的要求日益提高。在干法水泥生产中，分解炉出口的氧含量约为2％，而预热器出口的氧含量增至约3％，甚至更高，以至于对标煤耗的影响超过整个单位熟料煤耗的1％，生产过程中的热工设备难免出现破损漏风，遍布各处的人孔门、捅料孔也经常因为变形漏风。普通的补缝材料，有的用岩棉，操作复杂，对人身安全有隐患，外形不整洁，补缝作用有限；常见的修补材料，使用寿命短，巡检工人需要反复填补，不适用于既有锈蚀钢板、耐火材料等金属和非金属多种材质存在以及高温甚至含硫氯等烟气腐蚀的环境。At present, the requirements for energy saving and consumption reduction in the cement, glass, steel and other bulk production industries of industrial kilns are increasing. In dry-process cement production, the oxygen content at the outlet of the calciner is about 2%, and the oxygen content at the outlet of the preheater increases to about 3% or even higher, so that the impact on the standard coal consumption exceeds the coal consumption per unit of clinker. 1%, the thermal equipment in the production process will inevitably be damaged and leaked, and the manhole doors and poke holes all over the place often leak due to deformation. Common repairing materials, some use rock wool, are complicated to operate, have hidden dangers to personal safety, untidy appearance, and limited repairing effect; common repairing materials have a short service life, and inspection workers need to fill up repeatedly, which is not suitable for both. There are rusted steel plates, refractory materials and other metals and non-metallic materials, as well as high temperature and even flue gas corrosion environments such as sulfur and chlorine.
因此，现有技术中亟需一种用于热工的耐受温度高、使用寿命长、制备方法简单的高温补缝剂。Therefore, there is an urgent need in the prior art for a high-temperature seam patching agent for thermal work with high temperature tolerance, long service life and simple preparation method.
发明内容SUMMARY OF THE INVENTION
针对上述现有技术的不足，本发明提供了一种解决水泥生产线预分解系统高温热工设备中出现的密封堵漏问题，同时起到隔热保温作用的热工设备补缝剂及其制备方法。In view of the above-mentioned deficiencies of the prior art, the present invention provides a sealing agent for thermal equipment that solves the problem of sealing and plugging in high-temperature thermal equipment of a pre-decomposition system of a cement production line, and simultaneously plays the role of thermal insulation and a preparation method thereof. .
为实现上述目的，本发明通过下述技术方案予以实现：To achieve the above object, the present invention is achieved through the following technical solutions:
一种热工设备补缝剂，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份2％-10％浓度的聚乙烯醇溶液和60份25％-40％浓度的硅溶胶。A joint repairing agent for thermal equipment, comprising the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, 50 parts of polyvinyl alcohol solution with a concentration of 2% to 10% and 60 parts of 25%-40% concentration of silica sol.
所述聚乙烯醇溶液的浓度为5％。The concentration of the polyvinyl alcohol solution is 5%.
所述硅溶胶的浓度为30％。The concentration of the silica sol was 30%.
所述硅溶胶的浓度为35％。The concentration of the silica sol was 35%.
本发明还提供了如下的技术方案。The present invention also provides the following technical solutions.
一种热工设备补缝剂的制备方法，包括以下步骤：A preparation method of a thermal equipment seam patching agent, comprising the following steps:
(一)将氧化铝粉、莫来石短纤维和硅粉，按7：2：1质量比混合，制成混合粉；(1) mixing alumina powder, mullite short fiber and silicon powder in a mass ratio of 7:2:1 to make mixed powder;
(二)配置2％-10％浓度的聚乙烯醇溶液；(2) configure 2%-10% concentration of polyvinyl alcohol solution;
(三)将所述聚乙烯醇溶液与所述混合粉按5：1质量比混合，制成混合浆料；(3) mixing the polyvinyl alcohol solution and the mixed powder in a mass ratio of 5:1 to make a mixed slurry;
(四)在将所述混合浆料与25％-40％浓度的硅溶胶按1：1质量比混合，搅拌均匀，制得热工设备补缝剂。(4) Mixing the mixed slurry and silica sol with a concentration of 25%-40% in a mass ratio of 1:1, stirring evenly, to prepare a thermal equipment seam-repairing agent.
所述聚乙烯醇溶液的浓度为5％。The concentration of the polyvinyl alcohol solution is 5%.
所述硅溶胶的浓度为30％。The concentration of the silica sol was 30%.
所述硅溶胶的浓度为35％。The concentration of the silica sol was 35%.
本发明还提供了如下的技术方案。The present invention also provides the following technical solutions.
一种补缝混合物，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份2％-10％浓度的聚乙烯醇溶液和60份25％-40％浓度的硅溶胶，所述补缝混合物用于热工设备补缝剂。A seam repair mixture, comprising the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, 50 parts of polyvinyl alcohol solution with a concentration of 2% to 10% and 60 parts of 25%-40% concentration of silica sol, the seam repair mixture is used as a seam repair agent for thermal equipment.
本发明与现有技术相比的有益效果是：氧化铝粉、莫来石短纤维、硅粉、聚乙烯醇和硅溶胶的混合物，在高温条件下能够在表面形成一层氧化硅膜层，起到密封、隔离和保护作用；硅粉高温氧化伴随体积膨胀，起到充满缝隙边角的效果，从而起到填充缝隙防止漏风的作用；同时，还具有一定的隔热效果，防止热量传导，减少散热，进而起到节能作用；莫来石纤维可增加涂层柔韧性，能较好缓冲动态设备运行过程的机械或热应力；此外，补缝剂的原料来源广泛、制备工艺简单、制备成本低廉，有利于在线生产热工设备的即时维护。Compared with the prior art, the present invention has the beneficial effects that the mixture of alumina powder, mullite short fiber, silica powder, polyvinyl alcohol and silica sol can form a layer of silica film on the surface under high temperature conditions, and To seal, isolate and protect; the high temperature oxidation of silicon powder is accompanied by volume expansion, which fills the gap and corners, thus filling the gap to prevent air leakage; at the same time, it also has a certain heat insulation effect to prevent heat conduction and reduce Heat dissipation, thereby saving energy; mullite fiber can increase the flexibility of the coating, which can better buffer the mechanical or thermal stress during the operation of dynamic equipment; in addition, the seam repair agent has a wide range of raw materials, simple preparation process and low preparation cost , which is conducive to the immediate maintenance of on-line production thermal equipment.
具体实施方式Detailed ways
下面根据具体实施方式对本发明做进一步阐述。The present invention will be further described below according to specific embodiments.
实施例一Example 1
一种热工设备补缝剂，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份2％浓度的聚乙烯醇溶液和60份25％浓度的硅溶胶。硅溶胶为碱性胶体。A joint repairing agent for thermal equipment, comprising the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, 50 parts of 2% concentration polyvinyl alcohol solution and 60 parts of 25% concentration of silica sol. Silica sol is an alkaline colloid.
上述热工设备补缝剂的制备方法，包括以下步骤：The preparation method of the above-mentioned thermal equipment joint sealant comprises the following steps:
(一)将氧化铝粉、莫来石短纤维和硅粉，按7：2：1质量比混合，制成混合粉；(1) mixing alumina powder, mullite short fiber and silicon powder in a mass ratio of 7:2:1 to make mixed powder;
(二)配置2％浓度的聚乙烯醇溶液；(2) configure the polyvinyl alcohol solution of 2% concentration;
(三)将聚乙烯醇溶液与混合粉按5：1质量比混合，制成混合浆料；(3) mixing the polyvinyl alcohol solution and the mixed powder in a mass ratio of 5:1 to make a mixed slurry;
(四)在将混合浆料与25％浓度的硅溶胶按1：1质量比混合，搅拌均匀，制得热工设备补缝剂。(4) Mixing the mixed slurry with silica sol with a concentration of 25% according to a mass ratio of 1:1, stirring evenly, to prepare a joint repair agent for thermal equipment.
本实施例还提供了一种补缝混合物，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份2％浓度的聚乙烯醇溶液和60份25％浓度的硅溶胶，上述补缝混合物用于热工设备补缝剂。This embodiment also provides a seam repairing mixture, which includes the following components in parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, and 50 parts of 2% concentration of polyvinyl alcohol solution and 60 parts of a 25% concentration of silica sol, the above-mentioned seam repair mixture is used as a seam repair agent for thermal equipment.
实施例二Embodiment 2
一种热工设备补缝剂，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份5％浓度的聚乙烯醇溶液和60份30％浓度的硅溶胶。硅溶胶为碱性胶体。A joint repairing agent for thermal equipment, comprising the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, 50 parts of a 5% concentration polyvinyl alcohol solution and 60 parts of 30% concentration of silica sol. Silica sol is an alkaline colloid.
上述热工设备补缝剂的制备方法，包括以下步骤：The preparation method of the above-mentioned thermal equipment joint sealant comprises the following steps:
(一)将氧化铝粉、莫来石短纤维和硅粉，按7：2：1质量比混合，制成混合粉；(1) mixing alumina powder, mullite short fiber and silicon powder in a mass ratio of 7:2:1 to make mixed powder;
(二)配置5％浓度的聚乙烯醇溶液；(2) configure the polyvinyl alcohol solution of 5% concentration;
(三)将聚乙烯醇溶液与混合粉按5：1质量比混合，制成混合浆料；(3) mixing the polyvinyl alcohol solution and the mixed powder in a mass ratio of 5:1 to make a mixed slurry;
(四)在将混合浆料与30％浓度的硅溶胶按1：1质量比混合，搅拌均匀，制得热工设备补缝剂。(4) Mixing the mixed slurry with silica sol with a concentration of 30% according to a mass ratio of 1:1, stirring evenly, to prepare a joint repair agent for thermal equipment.
本实施例还提供了一种补缝混合物，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份5％浓度的聚乙烯醇溶液和60份30％浓度的硅溶胶，上述补缝混合物用于热工设备补缝剂。This embodiment also provides a seam repair mixture, which includes the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, and 50 parts of 5% concentration of polyvinyl alcohol solution and 60 parts of 30% concentration of silica sol, the above seam repair mixture is used as a thermal equipment seam repair agent.
实施例三Embodiment 3
一种热工设备补缝剂，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份10％浓度的聚乙烯醇溶液和60份35％浓度的硅溶胶。硅溶胶为碱性胶体。A joint repairing agent for thermal equipment, comprising the following components in parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, 50 parts of a 10% concentration polyvinyl alcohol solution and 60 parts of 35% concentration of silica sol. Silica sol is an alkaline colloid.
上述热工设备补缝剂的制备方法，包括以下步骤：The preparation method of the above-mentioned thermal equipment joint sealant comprises the following steps:
(一)将氧化铝粉、莫来石短纤维和硅粉，按7：2：1质量比混合，制成混合粉；(1) mixing alumina powder, mullite short fiber and silicon powder in a mass ratio of 7:2:1 to make mixed powder;
(二)配置10％浓度的聚乙烯醇溶液；(2) configure 10% concentration of polyvinyl alcohol solution;
(三)将聚乙烯醇溶液与混合粉按5：1质量比混合，制成混合浆料；(3) mixing the polyvinyl alcohol solution and the mixed powder in a mass ratio of 5:1 to make a mixed slurry;
(四)在将混合浆料与35％浓度的硅溶胶按1：1质量比混合，搅拌均匀，制得热工设备补缝剂。(4) Mixing the mixed slurry with the silica sol with a concentration of 35% in a mass ratio of 1:1, and stirring evenly, to prepare a joint repair agent for thermal equipment.
本实施例还提供了一种补缝混合物，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份10％浓度的聚乙烯醇溶液和60份35％浓度的硅溶胶，上述补缝混合物用于热工设备补缝剂。This embodiment also provides a seam repairing mixture, which includes the following components in parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, and 50 parts of a 10% concentration polyvinyl alcohol solution and 60 parts of 35% concentration of silica sol, the above seam repair mixture is used as a thermal equipment seam repair agent.
实施例四Embodiment 4
一种热工设备补缝剂，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份5％浓度的聚乙烯醇溶液和60份40％浓度的硅溶胶。硅溶胶为碱性胶体。A joint repairing agent for thermal equipment, comprising the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, 50 parts of a 5% concentration polyvinyl alcohol solution and 60 parts of 40% concentration of silica sol. Silica sol is an alkaline colloid.
上述热工设备补缝剂的制备方法，包括以下步骤：The preparation method of the above-mentioned thermal equipment joint sealant comprises the following steps:
(一)将氧化铝粉、莫来石短纤维和硅粉，按7：2：1质量比混合，制成混合粉；(1) mixing alumina powder, mullite short fiber and silicon powder in a mass ratio of 7:2:1 to make mixed powder;
(二)配置5％浓度的聚乙烯醇溶液；(2) configure the polyvinyl alcohol solution of 5% concentration;
(三)将聚乙烯醇溶液与混合粉按5：1质量比混合，制成混合浆料；(3) mixing the polyvinyl alcohol solution and the mixed powder in a mass ratio of 5:1 to make a mixed slurry;
(四)在将混合浆料与40％浓度的硅溶胶按1：1质量比混合，搅拌均匀，制得热工设备补缝剂。(4) Mixing the mixed slurry with silica sol with a concentration of 40% according to a mass ratio of 1:1, stirring evenly, to prepare a joint repair agent for thermal equipment.
本实施例还提供了一种补缝混合物，按照质量份数包括如下组分：7份氧化铝粉，2份莫来石短纤维，1份硅粉，50份5％浓度的聚乙烯醇溶液和60份40％浓度的硅溶胶，上述补缝混合物用于热工设备补缝剂。This embodiment also provides a seam repair mixture, which includes the following components according to parts by mass: 7 parts of alumina powder, 2 parts of mullite short fibers, 1 part of silicon powder, and 50 parts of 5% concentration of polyvinyl alcohol solution and 60 parts of a 40% concentration of silica sol, the above-mentioned seam repair mixture is used as a seam repair agent for thermal equipment.
本发明用于现有生产线的管理优化，如用本发明将水泥窑系统所有的桶料孔、人孔门、测点、法兰孔周围进行密封堵漏后，预热器出口的氧含量从4％降至3％，高温风机的转速下降20rpm，水泥窑系统节煤1kg/t熟料，节电0.5kWh/t熟料。处于生产状态的热工设备出现破损漏风漏料时，热工机制紊乱，容易出现产质量不合格的情况，将该补缝剂用于设备如水泥窑系统修补后，水泥窑系统漏风得到控制，燃料燃烧和原料反应恢复正常，可以短时间内解决生产事故；补缝剂在水泥生产线中的高温条件下能够在表面形成一层氧化硅膜层，起到密封、隔离和保护作用；硅粉高温氧化，伴随体积膨胀，充满缝隙边角，一定程度上防止了漏风，并起到一定的隔热作用。本发明原料来源广泛，制备方法简单易行，可以广泛适用于工业领域热工设备的修补。The invention is used for the management optimization of the existing production line. For example, after sealing and plugging all the barrel holes, manhole doors, measuring points and flange holes of the cement kiln system, the oxygen content at the outlet of the preheater will be reduced from 4% to 3%, the speed of the high-temperature fan is reduced by 20rpm, and the cement kiln system saves 1kg/t clinker and electricity 0.5kWh/t clinker. When the thermal equipment in the production state is damaged and leaks air and material, the thermal mechanism is disordered, and the production quality is likely to be unqualified. After the repair agent is used for equipment such as cement kiln system repair, the air leakage of the cement kiln system can be controlled. The combustion of fuel and the reaction of raw materials return to normal, which can solve production accidents in a short time; under the high temperature conditions in the cement production line, the joint sealant can form a layer of silicon oxide film on the surface, which plays the role of sealing, isolation and protection; the high temperature of silicon powder Oxidation, accompanied by volume expansion, fills the corners of the gap, prevents air leakage to a certain extent, and plays a certain role in heat insulation. The invention has wide raw material sources, simple and easy preparation method, and can be widely used for repairing thermal equipment in the industrial field.
以上所述的仅是本发明的优选实施方式，但本发明并不局限于上述的具体实施方式，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。The above are only the preferred embodiments of the present invention, but the present invention is not limited to the above-mentioned specific embodiments. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, the Several modifications and improvements are made, which all belong to the protection scope of the present invention.
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| WO2013032146A1 (en) * | 2011-08-31 | 2013-03-07 | Lg Innotek Co., Ltd. | Method of fabricating silicon carbide |
| CN103224399A (en) * | 2012-03-15 | 2013-07-31 | 中冶武汉冶金建筑研究院有限公司 | Silica sol-combined mullite perfusion material adapted to rapid repair of industrial furnace |
| CN104193362A (en) * | 2014-08-21 | 2014-12-10 | 苏州伊索来特耐火纤维有限公司 | Filling material for ceramic fiber refractory material shrinkage joints in furnace |
| CN110698184A (en) * | 2019-11-11 | 2020-01-17 | 贵州云弗电炉制造有限公司 | Furnace lining repairing material for rotary kiln |
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| WO2013032146A1 (en) * | 2011-08-31 | 2013-03-07 | Lg Innotek Co., Ltd. | Method of fabricating silicon carbide |
| CN103224399A (en) * | 2012-03-15 | 2013-07-31 | 中冶武汉冶金建筑研究院有限公司 | Silica sol-combined mullite perfusion material adapted to rapid repair of industrial furnace |
| CN104193362A (en) * | 2014-08-21 | 2014-12-10 | 苏州伊索来特耐火纤维有限公司 | Filling material for ceramic fiber refractory material shrinkage joints in furnace |
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