CN117105680A - 一种半硅质高温发泡隔热耐火材料及其制备方法 - Google Patents
一种半硅质高温发泡隔热耐火材料及其制备方法 Download PDFInfo
- Publication number
- CN117105680A CN117105680A CN202311167182.7A CN202311167182A CN117105680A CN 117105680 A CN117105680 A CN 117105680A CN 202311167182 A CN202311167182 A CN 202311167182A CN 117105680 A CN117105680 A CN 117105680A
- Authority
- CN
- China
- Prior art keywords
- semi
- temperature
- insulating refractory
- siliceous
- heat
- 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.)
- Pending
Links
- 238000005187 foaming Methods 0.000 title claims abstract description 46
- 239000011819 refractory material Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000002994 raw material Substances 0.000 claims abstract description 37
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 24
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004927 clay Substances 0.000 claims abstract description 10
- 239000010443 kyanite Substances 0.000 claims abstract description 10
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 10
- 239000004088 foaming agent Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000001238 wet grinding Methods 0.000 claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052903 pyrophyllite Inorganic materials 0.000 claims description 9
- 229910052851 sillimanite Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group 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 description 4
- 229910052863 mullite Inorganic materials 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 239000010427 ball clay Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 238000003837 high-temperature calcination Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000463 material Substances 0.000 description 14
- 238000009413 insulation Methods 0.000 description 10
- 239000012071 phase Substances 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 8
- 239000011148 porous material Substances 0.000 description 6
- 238000004321 preservation Methods 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 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
- 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
-
- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3821—Boron carbides
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3886—Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明涉及一种半硅质高温发泡隔热耐火材料及其制备方法，涉及隔热耐火材料技术领域。本发明主要包括以下步骤，按照质量百分比将26~54wt%的低铝铝硅质天然原料、40~65.5wt%的硅石、0.5~4wt%的蓝晶石、0.2~0.5wt%的高温发泡剂以及4wt%的软质黏土结合剂混合获得混合原料；随后将混合原料湿法共磨成325目、进入干燥塔脱水、造粒、经100~120MPa压力下成型得到坯体；最后将坯体置于高温炉中1500~1580℃保温1~2h煅烧，冷却出炉后即得到半硅质高温发泡隔热耐火材料。本发明所述的半硅质高温发泡隔热耐火材料以二氧化硅为主要化学组成，通过高温煅烧原位发泡成孔，未引入低熔点的助熔剂，所制备的制品不仅导热系数低、力学性能好且使用温度高。
Description
技术领域
本发明属于耐火材料技术领域，具体涉及一种半硅质高温发泡隔热耐火材料及其制备方法。
背景技术
高温发泡材料是一种具有三维网结构的陶瓷基高气孔率材料，具有轻质高强、保温隔热、隔音降噪、耐腐蚀、抗老化等优异性能。其中，高温发泡材料中的闭口气孔率高，极大减少了热传递过程中的对流传热效率，因此，表现出优良的保温隔热性能。高温发泡材料在建筑保温行业受到广泛的重视和关注。公开号为CN107353032A的发明专利提供了一种发泡陶瓷保温板的制备方法，该方法以工业无机危险废物和耐火粘土尾矿中大量的低熔点碱性氧化物助熔，1100~1300℃下发泡，制备出体积密度为0.3~0.8 g/cm3，耐压强度为2.0~8.0 MPa之间的发泡陶瓷。公开号为CN113387720A的发明专利以煤矸石和钾长石为主要原料，通过添加助熔剂和发泡剂，在800~900℃下发泡，制得体积密度为130~230kg/m3，抗压强度为2.5~3.3MPa的发泡保温材料。上述发明专利的实施丰富了高温发泡材料的制备原料和制备方法，但在高温发泡材料制备过程中引入大量助熔剂，一般在低于1300℃下烧成，其耐火度较低，难以满足高温工业的使用条件。特别是长石类矿物或碱性氧化物的引入会大幅降低液相形成的温度和液相粘度，从而大幅降低发泡材料的使用温度。因此，需进一步提高高温发泡材料的高温发泡温度和耐火度，改善其高温使用性能，以便达到在高温工业应用的条件。
半硅质耐火材料是一种传统的高温材料，应用于钢包永久衬、水泥窑预热带等高温炉衬中，具有碱性氧化物杂质含量低，抗酸性能优良，在1000~1400℃高温下体积稳定好等特点。蔡淑萍等（高硅半硅砖的试制[J]，耐火材料（技术简报），1999,2:119）以硅石和废硅砖颗粒为骨料，叶腊石和工业氧化铝为细粉，铁磷为矿化剂，1330℃煅烧后制备出体积密度为2.0g/cm3左右的致密半硅砖。传统半硅质耐火材料耐火度低，功能较为单一，导致该类产品的附加值低。半硅质耐火材料的导热系数低，是理想的隔热耐火材料，然而半硅质隔热耐火材料的研究开发鲜有报道。基于半硅质耐火材料SiO2含量高，Al2O3含量低的化学组成特点，在窑炉的隔热温度区（1100~1400℃）使用性能稳定，较高温度（≥1500℃）下易熔融为高粘度液相，具有制备高温发泡隔热材料的潜在特性。因此，需要开发全新的工艺技术制备含大量闭气孔结构的半硅质隔热材料，能够提升半硅质耐火材料的隔热功能，减少高温设施的能量排放，对高温工业的碳达标产生积极的作用。
发明内容
本发明的目的是提供一种半硅质高温发泡隔热耐火材料及其制备方法，本发明所制备的半硅质高温发泡隔热耐火材料具有导热系数低、力学性能好且使用温度高的特点。
为实现上述目的，本发明采用的技术方案为：
一种半硅质高温发泡隔热耐火材料的制备方法，包括以下步骤：
首先，按照质量百分比将26~54wt%的低铝铝硅质天然原料、40~65.5wt%的硅石、0.5~4wt%的蓝晶石、0.2~0.5wt%的高温发泡剂以及4wt%的软质黏土结合剂混合获得混合原料；
然后，将混合原料湿法共磨成325目、进入干燥塔脱水、造粒、经100~120MPa压力下成型得到坯体；
最后，将坯体置于高温炉中1500~1580℃保温1~2h进行煅烧，冷却出炉后即得到半硅质高温发泡隔热耐火材料。
进一步，所述低铝铝硅质天然原料为高硅叶腊石、富硅硅线石中的一种或两种，粒径≤200目。
进一步，所述高硅叶腊石中SiO2含量为75%~85wt%、Al2O3含量为15%~20wt%。
进一步，所述富硅硅线石中SiO2含量为65%~70wt%、Al2O3含量为30%~40wt%。
进一步，所述硅石取自天然矿物，其中SiO2含量≥99.0wt%，原料粒径≤200目。
进一步，所述高温发泡剂为TiN、TiAlN、SiC、B4C中的一种或两种，原料粒径≤400目。
进一步，所述软质黏土结合剂为广西白泥、球黏土、高岭土黏土中的一种。
进一步，所述制备方法制备的半硅质高温发泡隔热耐火材料的结晶相以方石英为主，次晶相为莫来石，并含有≥30%的富硅玻璃相。
进一步，所述制备方法制备的半硅质高温发泡隔热耐火材料的闭气孔率在60%~90%之间，耐压强度在8~20MPa之间，荷重软化温度在1350~1450℃之间，导热系数在0.08~0.22W/(m·k)之间。
与现有技术相比，本发明的有益效果为：
本发明以低铝铝硅质天然原料和硅石为主要原料，原料的纯度高、碱性氧化物杂质含量低，且未引入助熔剂，大幅提高了高温发泡材料的使用温度。在坯体加热过程中，原料中的蓝晶石和硅线石分解及硅石晶型转化伴随的体积膨胀效应产生大量均匀分布的初始微气孔；在高温煅烧阶段，添加的高温发泡剂进一步辅助造孔，得到的高温发泡材料孔径分布均匀。所制备的半硅质高温发泡隔热耐火材料以方石英为主晶相，次晶相莫来石晶粒呈现针状并穿插在富硅玻璃相之间，起到提高发泡隔热材料强度和韧性的作用。
附图说明
图1为本发明实施例1所制备的高温发泡陶瓷的照片；
图2为本发明实施例2所制备的高温发泡陶瓷的XRD图。
具体实施方式
下面结合附图和具体的实施例对本发明的技术方案及效果做进一步描述，但本发明的保护范围并不限于此。
实施例1
本实施例一种半硅质高温发泡隔热耐火材料的制备方法，包括以下步骤：
按照质量百分比将42.25wt%的高硅叶腊石、49.25wt%的硅石、4%的蓝晶石、0.5%的SiC以及4wt%的广西白泥混合获得混合原料；随后将混合原料湿法共磨成325目、进入干燥塔脱水、造粒、经120MPa压力下成型得到坯体；最后将坯体置于高温炉中1510℃保温1h煅烧，冷却出炉后即得到半硅质高温发泡隔热耐火材料。
本实例所述高硅叶腊石原料灼减后SiO2含量为78.83wt%、Al2O3含量18.55wt%；所述硅石中SiO2含量为99.56wt%；所述蓝晶石中Al2O3含量50.0wt%，原料粒径≤325目；所述SiC和广西白泥原料粒径均≤400目
本实例所制备的高温发泡隔热耐火材料的技术指标为：闭气孔率为89.0%，体积密度为0.38g/cm3，耐压强度为10.5 MPa，荷重软化温度为1400℃，导热系数为0.12W/(m·k)。从图1可以看出，所制备的高温发泡陶瓷内部气孔分布及孔径大小均匀，孔壁较薄且孔的圆形度较高。
实施例2
本实施例一种半硅质高温发泡隔热耐火材料的制备方法，包括以下步骤：
按照质量百分比将12.54wt%的富硅硅线石，33.2wt%的高硅叶腊石、49.56wt%的硅石、0.5wt%的蓝晶石、0.2wt%的SiC以及4wt%的广西白泥混合获得混合原料；随后将混合原料湿法共磨成325目、进入干燥塔脱水、造粒、经120MPa压力下成型得到坯体；最后将坯体置于高温炉中1550℃保温1h煅烧，冷却出炉后即得到半硅质高温发泡隔热耐火材料。
本实例所述叶腊石原料灼减后SiO2含量为82.71wt%、Al2O3含量16.01wt%；所述硅线石原料灼减后SiO2含量为65.33 wt%、Al2O3含量为33.65 wt%；所述硅石中SiO2含量为99.56wt%；所述蓝晶石中Al2O3含量50.0wt%，原料粒径≤325目；所述SiC和广西白泥原料粒径均≤400目。
本实例所制备的高温发泡隔热耐火材料的技术指标为：闭气孔率为76.5%，体积密度为0.56g/cm3，耐压强度为14.2MPa，荷重软化温度为1440℃，导热系数为0.18W/(m·k)。从图2高温发泡陶瓷的XRD图可看出，主晶相为方石英相，次晶相为莫来石相。
实施例3
本实施例一种半硅质高温发泡隔热耐火材料的制备方法，包括以下步骤：
按照质量百分比将35wt%的富硅硅线石、60wt%的硅石、0.5%的蓝晶石、0.5%的SiC以及4wt%的广西白泥混合获得混合原料；随后将混合原料湿法共磨成325目、进入干燥塔脱水、造粒、经120MPa压力下成型得到坯体；最后将坯体置于高温炉中1530℃保温1h煅烧，冷却出炉后即得到半硅质高温发泡隔热耐火材料。
本实例所述硅线石原料灼减后SiO2含量为65.33 wt%、Al2O3含量为33.65 wt%；所述硅石中SiO2含量为99.56wt%；所述蓝晶石中Al2O3含量50.0wt%，原料粒径≤325目；所述SiC和广西白泥原料粒径均≤400目。
本实例所制备的高温发泡隔热耐火材料的技术指标为：闭气孔率为80.5%，体积密度为0.45g/cm3，耐压强度为12.3MPa，荷重软化温度为1420℃，导热系数为0.16W/(m·k)。
上述实施例的高温发泡剂也可以为TiN、TiAlN或B4C。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。
Claims (10)
1.一种半硅质高温发泡隔热耐火材料的制备方法，其特征在于，该方法包括以下步骤：
首先，按照质量百分比将26~54wt%的低铝铝硅质天然原料、40~65.5wt%的硅石、0.5~4wt%的蓝晶石、0.2~0.5wt%的高温发泡剂以及4wt%的软质黏土结合剂混合获得混合原料；
然后，将混合原料湿法共磨成325目、进入干燥塔脱水、造粒、经100~120MPa压力下成型得到坯体；
最后，将坯体置于高温炉中1500~1580℃保温1~2h进行煅烧，冷却出炉后即得到半硅质高温发泡隔热耐火材料。
2.根据权利要求1所述的半硅质高温发泡隔热耐火材料的制备方法，其特征在于，所述低铝铝硅质天然原料为高硅叶腊石、富硅硅线石中的一种或两种，粒径≤200目。
3.根据权利要求1所述的半硅质高温发泡隔热耐火材料的制备方法，其特征在于，所述高硅叶腊石中SiO2含量为75%~85wt%、Al2O3含量为15%~20wt%。
4.根据权利要求1所述的半硅质高温发泡隔热耐火材料的制备方法，其特征在于，所述富硅硅线石中SiO2含量为65%~70wt%、Al2O3含量为30%~40wt%。
5.根据权利要求1所述的半硅质高温发泡隔热耐火材料的制备方法，其特征在于，所述硅石取自天然矿物，其中SiO2含量≥99.0wt%，原料粒径≤200目。
6.根据权利要求1所述的半硅质高温发泡隔热耐火材料的制备方法，其特征在于，所述高温发泡剂为TiN、TiAlN、SiC、B4C中的一种或两种，原料粒径≤400目。
7.根据权利要求1所述的半硅质高温发泡隔热耐火材料的制备方法，其特征在于，所述软质黏土结合剂为广西白泥、球黏土、高岭土黏土中的一种。
8.一种半硅质高温发泡隔热耐火材料，其特征在于，由权利要求1～7任意一项权利要求所述的制备方法制备得到。
9.根据权利要求8所述的半硅质高温发泡隔热耐火材料，其特征在于，所述半硅质高温发泡隔热耐火材料的结晶相以方石英为主，次晶相为莫来石，并含有≥30%的富硅玻璃相。
10.根据权利要求8所述的半硅质高温发泡隔热耐火材料，其特征在于，所述半硅质高温发泡隔热耐火材料的闭气孔率在60%~90%之间，耐压强度在8~20MPa之间，荷重软化温度在1350~1450℃之间，导热系数在0.08~0.22W/(m·k)之间。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311167182.7A CN117105680A (zh) | 2023-09-12 | 2023-09-12 | 一种半硅质高温发泡隔热耐火材料及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311167182.7A CN117105680A (zh) | 2023-09-12 | 2023-09-12 | 一种半硅质高温发泡隔热耐火材料及其制备方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117105680A true CN117105680A (zh) | 2023-11-24 |
Family
ID=88796361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311167182.7A Pending CN117105680A (zh) | 2023-09-12 | 2023-09-12 | 一种半硅质高温发泡隔热耐火材料及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117105680A (zh) |
-
2023
- 2023-09-12 CN CN202311167182.7A patent/CN117105680A/zh active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101215176B (zh) | 高强低导热节能耐火材料 | |
| CN106145976B (zh) | 水泥窑用红柱石-莫来石-碳化硅砖及其制备方法 | |
| CN101215158A (zh) | 一种轻质镁铝尖晶石原料的制备方法 | |
| CN102432312A (zh) | 一种微孔莫来石-碳化硅复相耐火材料及其制备方法 | |
| CN110563476A (zh) | 纤维增强耐火砖及其制备方法 | |
| CN106588059A (zh) | 一种石灰回转窑用预制件及其制备方法 | |
| CN114133257A (zh) | 一种含六铝酸钙的微纳孔绝隔热耐火材料及其制备方法 | |
| CN113087504A (zh) | 一种高导热致密硅砖及其制备方法 | |
| CN105481375A (zh) | 一种节能耐火材料 | |
| CN111302769A (zh) | 一种低铝镁质复合不烧砖及其制备方法 | |
| CN109970459B (zh) | 一种柱状莫来石高耐磨砖及其制备方法 | |
| CN110963807A (zh) | 一种用于水泥窑过渡带的节能型莫来石质耐火砖及其制备方法 | |
| CN109095902B (zh) | 一种玻璃窑炉用铺面砖及其生产工艺 | |
| CN106431435A (zh) | 一种多孔方镁石‑镁橄榄石复相材料及其制备方法 | |
| JP6207423B2 (ja) | 軽量耐アルカリ耐火断熱れんが及びその製造方法 | |
| CN113105220A (zh) | 玻璃窑用六铝酸钙-镁铝尖晶石复相耐火材料 | |
| CN101367663B (zh) | 熔融再结合复合氧化铝耐火材料 | |
| CN108675808A (zh) | 一种新型工业窑炉用耐火材料及其制备方法 | |
| CN117105680A (zh) | 一种半硅质高温发泡隔热耐火材料及其制备方法 | |
| CN100429177C (zh) | 一种镁-铝轻质保温耐火材料及其制备方法 | |
| CN113912382A (zh) | 一种轻质高铝隔热耐火砖及其制备方法 | |
| CN106518139B (zh) | 一种隔热耐火砖的制备方法 | |
| CN110937907A (zh) | 一种用于水泥窑过渡带的节能型莫来石-刚玉-碳化硅耐火砖及其制备方法 | |
| CN110642610A (zh) | 一种中间包受钢口用耐火砖及其制备方法 | |
| CN115849952B (zh) | 一种六铝酸钙-赛隆轻质砖及其制备工艺 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |