CN116120087B - 一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法 - Google Patents
一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法 Download PDFInfo
- Publication number
- CN116120087B CN116120087B CN202211621650.9A CN202211621650A CN116120087B CN 116120087 B CN116120087 B CN 116120087B CN 202211621650 A CN202211621650 A CN 202211621650A CN 116120087 B CN116120087 B CN 116120087B
- Authority
- CN
- China
- Prior art keywords
- parts
- foamed ceramic
- fly ash
- fluorozirconate
- synthesized
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 35
- 239000010881 fly ash Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 229910052656 albite Inorganic materials 0.000 claims abstract description 13
- 239000000454 talc Substances 0.000 claims abstract description 13
- 229910052623 talc Inorganic materials 0.000 claims abstract description 13
- 235000012222 talc Nutrition 0.000 claims abstract description 13
- 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 claims abstract description 12
- 239000004088 foaming agent Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 14
- 229910010293 ceramic material Inorganic materials 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000004321 preservation Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000001238 wet grinding Methods 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 6
- BJZIJOLEWHWTJO-UHFFFAOYSA-H dipotassium;hexafluorozirconium(2-) Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[Zr+4] BJZIJOLEWHWTJO-UHFFFAOYSA-H 0.000 claims description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000001354 calcination Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000010433 feldspar Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004626 scanning electron microscopy Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 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 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000003238 silicate melt Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 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
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- 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
- C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
-
- 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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明涉及一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法，轻质发泡陶瓷由粉煤灰、滑石、钠长石、钾长石、发泡剂及氟锆酸盐合成；按重量份计，粉煤灰40‑80份，滑石0‑20份，钠长石5‑35份，钾长石5‑35份，发泡剂0.2‑5份，氟锆酸盐1‑10份。本发明的有益效果是：本发明所得发泡陶瓷产品原料来源丰富且成本低、能耗低、设备投资低，同时产品密度小强度高导热系数低，综合性能优异，具有显著的市场竞争力。
Description
技术领域
本发明涉及粉煤灰基建筑材料制备领域，更确切地说，它涉及一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法。
背景技术
轻质发泡陶瓷的气孔率高达50％以上，孔径可在0.1～5mm之间调节，体积密度介于0.2-0.3g/cm3左右。气孔多以闭孔形式存在，导热系数和吸水率较低。作为墙体保温材料，具有轻质、隔音、高强、耐火、环保等优点；相比于传统有机保温材料，具有耐高温、耐久性好的优势。轻质发泡陶瓷是一种理想的墙体保温材料，具有显著的建筑墙体保温节能效果，可应用于船用耐火分隔、垒墙、防火隔离带等多个领域。
发泡陶瓷的合成所需原料多种多样。目前工业上主要是将尾矿作为原料，添加石英、粘土和长石等优质的硅酸盐材料作为其基础原料，以碳化硅、碳黑等作为其发泡剂，添加硼酸、三氧化二锑等作为助熔剂和稳泡剂烧结而成。总体而言高质量的发泡陶瓷产品对原料的矿物成分和配比、对工艺过程和条件调控要求极高，高投入、高成本、低产量是目前发泡陶瓷行业急需解决的共性难题。
粉煤灰是我国燃煤电厂的固体废弃物，存量庞大。粉煤灰中富含丰富的Al2O3和SiO2，两者含量在60％以上，主要以莫来石、刚玉、非晶态二氧化硅、铝硅酸盐玻璃相等形式存在，具备制备铝硅发泡陶瓷材料的基本化学组成。以粉煤灰为原料制备发泡陶瓷材料，可成为粉煤灰大掺量高值化利用的新方向，同时也可以缓解发泡陶瓷产业发展中的成本制约，提高最终产品的市场竞争力。然而当前以粉煤灰为原料制备的发泡陶瓷研究中存在以下问题：(1)粉煤灰掺量较低，大多低于40％，难以实现大掺量应用。(2)煅烧温度高，烧结温度一般均大于1250℃，能耗较大。(3)难以得到轻质高强度发泡陶瓷。轻质高强发泡陶瓷密度一般为0.18-0.35g/cm3，同时压缩强度≥0.5MPa，导热系数小于0.10W/m·K，一般的粉煤灰基发泡陶瓷难以同时满足上述指标。
专利CN104744070 B公开了一种粉煤灰轻质隔热发泡陶瓷保温板及其制法，粉煤灰掺量≥65％，烧结温度≤1200℃，密度为0.2-0.35g/cm3，抗压强度大于等于2MPa。但是，该方法在煅烧过程中使用了氧化气氛，不仅增加了能耗成本还具有一定的危险性。
发明内容
本发明的目的是克服现有技术中的不足，提供了一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法。
第一方面，提供了一种利用粉煤灰合成的轻质发泡陶瓷，由粉煤灰、滑石、钠长石、钾长石、发泡剂及氟锆酸盐合成；按重量份计，粉煤灰40-80份，滑石0-20份，钠长石5-35份，钾长石5-35份，发泡剂0.2-5份，氟锆酸盐1-10份。
作为优选，所述粉煤灰主要由以下成分组成：按重量份计，SiO2 40-80份，Al2O310-40份，Fe2O3 2-10份，CaO 4-8份，其余镁、钾、钠元素的氧化物占5-15％。
作为优选，所述滑石主要由以下成分组成：按重量份计，SiO2 15-80份，MgO 20-50份，Fe2O3 0-1份，CaO 0-1份。
作为优选，所述钠长石主要由以下成分组成：按重量份计，SiO2 40-80份，Al2O310-30份，Fe2O3 0-2份，CaO 0-5份，K2O 1-4份，Na2O 4-15份。
作为优选，所述钾长石主要由以下成分组成：按重量份计，SiO2 40-80份，Al2O310-30份，Fe2O3 0-2份，CaO 0-5份，K2O 4-15份，Na2O 1-4份。
作为优选，所述发泡剂为碳化硅、氧化铁、二氧化锰中的一种或多种。
作为优选，所述氟锆酸盐为氟锆酸钾、氟锆酸钠、氟锆酸铵中的一种或多种。
作为优选，所述轻质发泡陶瓷体积密度为0.15-0.30g/cm3，抗压强度为0.5-2.0MPa，导热系数为0.05-0.1W/(m·K)。
第二方面，提供了一种如第一方面所述轻质发泡陶瓷的制备方法，包括：
步骤1、将原料均匀混合，利用球磨机湿磨制成浆料；浆料中水的重量百分比为30-60％；
步骤2、将所述浆料进行喷雾造粒，得到粉体颗粒，充填到模具中空气气氛进行煅烧处理；烧结温度为1200-1300℃，保温时间为15-180min；
步骤3、自然冷却，依照所需尺寸进行切割得到发泡陶瓷材料。
粉煤灰为燃煤电厂高温煅烧后的产物，高温晶相复杂，成分偏析严重且晶粒形状不规则，在发泡陶瓷的制备过程中，会造成煅烧温度较高，孔分布不均且结构差别较大，孔壁晶相量低材料硬度不高等问题，本发明中加入适量的氟锆酸盐，一方面可促进原料中基体的熔融，在较低温度下实现气泡的发生与长大；另一方面可显著降低高温下硅酸盐熔体的粘度，促进气孔的完整度与均匀分布；同时还能在自然冷却阶段，实现二次析晶，提高了孔壁中结晶晶粒的含量进行增韧补强；更为重要的是还能对二次析晶的晶粒进行结构调整，促进稳定性及硬度极高的三角晶粒的出现；在上述多种作用的协同作用下，可在空气烧结气氛下得到密度小、硬度高同时导热系数极低的发泡陶瓷材料。
本发明的有益效果是：
1、本发明可实现粉煤灰的大掺量应用，有效解决因粉煤灰堆积导致的环境污染问题。。
2、本发明提供的制备工艺中无需进行特殊气氛处理，工艺流程简单，设备投资少，危险性降低。
3、本发明所得发泡陶瓷产品原料来源丰富且成本低、能耗低、设备投资低，同时产品密度小强度高导热系数低，综合性能优异，具有显著的市场竞争力。
4、本发明所得产品可应用于墙面节能保温领域，解决有机保温材料易老化、耐久性差、易燃烧等问题，实现建筑节能的目的。
附图说明
图1为实施例2中所得发泡陶瓷材料的扫描电镜结果示意图；
图2为对比例2中所得发泡陶瓷材料的扫描电镜结果示意图。
具体实施方式
下面结合实施例对本发明做进一步描述。下述实施例的说明只是用于帮助理解本发明。应当指出，对于本技术领域的普通人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干修饰，这些改进和修饰也落入本发明权利要求的保护范围内。
实施例1：
本实施例中的发泡陶瓷合成原料为粉煤灰60份，滑石9.5份，钠长石5份，钾长石15份，碳化硅0.5份，氟锆酸钾10份。将上述原料将原料均匀混合，利用球磨机湿磨制成浆料；浆料中水的重量百分比为50％；将上述浆料进行喷雾造粒，得到粉体颗粒，充填到模具中进行煅烧处理；烧结温度为1220℃，保温时间为45min；随后自然冷却，依照所需尺寸进行切割得到发泡陶瓷材料。检测产品密度为0.268g/cm3，导热系数为0.06W/(m·K)，抗压强度为0.999MPa。
实施例2：
本实施例中的发泡陶瓷合成原料为粉煤灰64份，滑石9.5份，钠长石5份，钾长石15份，碳化硅0.5份，氟锆酸钾6份。将上述原料将原料均匀混合，利用球磨机湿磨制成浆料；浆料中水的重量百分比为50％；将上述浆料进行喷雾造粒，得到粉体颗粒，充填到模具中进行煅烧处理；烧结温度为1220℃，保温时间为45min；随后自然冷却，依照所需尺寸进行切割得到发泡陶瓷材料。其微观形貌如图1所示。检测产品密度为0.250g/cm3，导热系数为0.08W/(m·K)，抗压强度为0.922MPa。从图1中可知，材料表面含有丰富三角晶粒和长状纤维状晶体，结晶性含量高，有利于增加材料强度。
实施例3：
本实施例中的发泡陶瓷合成原料为粉煤灰68份，滑石9.5份，钠长石5份，钾长石15份，碳化硅0.5份，氟锆酸钾2份。将上述原料将原料均匀混合，利用球磨机湿磨制成浆料；浆料中水的重量百分比为50％；将上述浆料进行喷雾造粒，得到粉体颗粒，充填到模具中进行煅烧处理；烧结温度为1220℃，保温时间为45min；随后自然冷却，依照所需尺寸进行切割得到发泡陶瓷材料。检测产品密度为0.293g/cm3，导热系数为0.09W/(m·K)，抗压强度为1.122MPa。
对比例1：
本对比例中的发泡陶瓷合成原料为粉煤灰64份，滑石9.5份，钠长石5份，钾长石21份，碳化硅0.5份。将上述原料将原料均匀混合，利用球磨机湿磨制成浆料；浆料中水的重量百分比为50％；将上述浆料进行喷雾造粒，得到粉体颗粒，充填到模具中进行煅烧处理；烧结温度为1220℃，保温时间为45min；随后自然冷却，依照所需尺寸进行切割得到发泡陶瓷材料。检测产品密度为0.324g/cm3，导热系数为0.15W/(m·K)，抗压强度为0.452MPa。
对比例2：
本对比例中的发泡陶瓷合成原料为粉煤灰64份，滑石9.5份，钠长石5份，钾长石21份，碳化硅0.5份。将上述原料将原料均匀混合，利用球磨机湿磨制成浆料；浆料中水的重量百分比为50％；将上述浆料进行喷雾造粒，得到粉体颗粒，充填到模具中进行煅烧处理；烧结温度为1260℃，保温时间为45min；随后自然冷却，依照所需尺寸进行切割得到发泡陶瓷材料。其微观形貌如图2所示。检测产品密度为0.252g/cm3，导热系数为0.10W/(m·K)，抗压强度为0.245MPa。从图2中可知，材料表面仅含有少量长状纤维状晶体，结晶性含量低，材料强度较低。
从以上的实施例和对比例可以看出，本发明的方法制备的轻质发泡陶瓷性能，与现有技术相比，本发明在常规的空气烧结气氛下在相同的烧结温度下可得到密度更小强度更高材料。在相同的产品密度下，其烧结温度更低产品强度更高。本发明具有明显的先进性。
Claims (4)
1.一种利用粉煤灰合成的轻质发泡陶瓷，其特征在于，由粉煤灰、滑石、钠长石、钾长石、发泡剂及氟锆酸盐合成；按重量份计，粉煤灰60-80份，滑石9.5-20份，钠长石5-35份，钾长石5-35份，发泡剂0.2-5份，氟锆酸盐1-10份；所述轻质发泡陶瓷体积密度为0.15-0.30g/cm3，抗压强度为0.5-2.0MPa，导热系数为0.05-0.1W/(m·K)；所述发泡剂为碳化硅、氧化铁、二氧化锰中的一种或多种；所述氟锆酸盐为氟锆酸钾、氟锆酸钠、氟锆酸铵中的一种或多种；所述轻质发泡陶瓷的制备方法，包括：
步骤1、将原料均匀混合，利用球磨机湿磨制成浆料；浆料中水的重量百分比为30-60%；
步骤2、将所述浆料进行喷雾造粒，得到粉体颗粒，充填到模具中空气气氛进行煅烧处理；烧结温度为1200-1300℃，保温时间为15-180min；
步骤3、自然冷却，依照所需尺寸进行切割得到发泡陶瓷材料。
2.根据权利要求1所述的利用粉煤灰合成的轻质发泡陶瓷，其特征在于，所述滑石主要由以下成分组成：按重量份计，SiO2 15-80份，MgO 20-50份，Fe2O3 0-1份，CaO 0-1份。
3.根据权利要求1所述的利用粉煤灰合成的轻质发泡陶瓷，其特征在于，所述钠长石主要由以下成分组成：按重量份计，SiO2 40-80份，Al2O3 10-30份，Fe2O3 0-2份，CaO 0-5份，K2O 1-4 份，Na2O 4-15份。
4.根据权利要求1所述的利用粉煤灰合成的轻质发泡陶瓷，其特征在于，所述钾长石主要由以下成分组成：按重量份计，SiO2 40-80份，Al2O3 10-30份，Fe2O3 0-2份，CaO 0-5份，K2O 4-15 份，Na2O 1-4份。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621650.9A CN116120087B (zh) | 2022-12-16 | 2022-12-16 | 一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621650.9A CN116120087B (zh) | 2022-12-16 | 2022-12-16 | 一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116120087A CN116120087A (zh) | 2023-05-16 |
| CN116120087B true CN116120087B (zh) | 2024-04-12 |
Family
ID=86300039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211621650.9A Active CN116120087B (zh) | 2022-12-16 | 2022-12-16 | 一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116120087B (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117185831B (zh) * | 2023-09-13 | 2024-04-26 | 信阳中毅高热材料有限公司 | 一种环保型耐火陶瓷板及其生产工艺 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1149582A (ja) * | 1997-07-30 | 1999-02-23 | Takashi Taguchi | 多孔質軽量セラミック製品及びその製造方法 |
| JP2008239434A (ja) * | 2007-03-28 | 2008-10-09 | Nagoya Institute Of Technology | セラミックス多孔体の製造方法及びセラミックス多孔体 |
| CN105272338A (zh) * | 2015-10-12 | 2016-01-27 | 鄂尔多斯市紫荆创新研究院 | 一种利用粉煤灰和沙漠沙制备高强发泡陶瓷材料的方法 |
| CN105541376A (zh) * | 2015-12-09 | 2016-05-04 | 文登蓝岛建筑工程有限公司 | 一种轻质高强发泡陶瓷板材及其制备方法 |
| KR20160142003A (ko) * | 2015-06-02 | 2016-12-12 | 조동현 | 세라믹 조성물 및 이를 이용해 제조되는 다공질 경량 발포 세라믹 성형품 |
| CN107141014A (zh) * | 2017-07-05 | 2017-09-08 | 肥西县碧涛建材有限公司 | 一种发泡陶瓷保温板及其制备方法 |
| CN107382362A (zh) * | 2017-07-25 | 2017-11-24 | 合肥欧仕嘉机电设备有限公司 | 一种发泡陶瓷保温板及其制备方法 |
| CN108129131A (zh) * | 2017-12-15 | 2018-06-08 | 华南理工大学 | 一种轻质隔热陶瓷的低温制备方法 |
| CN115321971A (zh) * | 2022-09-14 | 2022-11-11 | 浙江天地环保科技股份有限公司 | 一种利用粉煤灰制备堇青石陶瓷的方法 |
-
2022
- 2022-12-16 CN CN202211621650.9A patent/CN116120087B/zh active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1149582A (ja) * | 1997-07-30 | 1999-02-23 | Takashi Taguchi | 多孔質軽量セラミック製品及びその製造方法 |
| JP2008239434A (ja) * | 2007-03-28 | 2008-10-09 | Nagoya Institute Of Technology | セラミックス多孔体の製造方法及びセラミックス多孔体 |
| KR20160142003A (ko) * | 2015-06-02 | 2016-12-12 | 조동현 | 세라믹 조성물 및 이를 이용해 제조되는 다공질 경량 발포 세라믹 성형품 |
| CN105272338A (zh) * | 2015-10-12 | 2016-01-27 | 鄂尔多斯市紫荆创新研究院 | 一种利用粉煤灰和沙漠沙制备高强发泡陶瓷材料的方法 |
| CN105541376A (zh) * | 2015-12-09 | 2016-05-04 | 文登蓝岛建筑工程有限公司 | 一种轻质高强发泡陶瓷板材及其制备方法 |
| CN107141014A (zh) * | 2017-07-05 | 2017-09-08 | 肥西县碧涛建材有限公司 | 一种发泡陶瓷保温板及其制备方法 |
| CN107382362A (zh) * | 2017-07-25 | 2017-11-24 | 合肥欧仕嘉机电设备有限公司 | 一种发泡陶瓷保温板及其制备方法 |
| CN108129131A (zh) * | 2017-12-15 | 2018-06-08 | 华南理工大学 | 一种轻质隔热陶瓷的低温制备方法 |
| CN115321971A (zh) * | 2022-09-14 | 2022-11-11 | 浙江天地环保科技股份有限公司 | 一种利用粉煤灰制备堇青石陶瓷的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116120087A (zh) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114105676B (zh) | 一种刚玉质微纳孔绝隔热耐火材料及其制备方法 | |
| CN107352972B (zh) | 一种煤矸石、石墨尾矿制备的泡沫陶瓷轻质内隔墙板及制备方法 | |
| CN102515824A (zh) | 一种超轻泡沫水泥混凝土及其制备方法 | |
| CN101717267B (zh) | 以莫来石质辊棒废料为原料的轻质砖及其制备方法 | |
| CN102786285A (zh) | 硫磷酸盐水泥保温砂浆或保温板 | |
| CN116120087B (zh) | 一种利用粉煤灰合成的轻质发泡陶瓷及其制备方法 | |
| CN111807807A (zh) | 免蒸压轻质保温颗粒加气混凝土砌块及制备方法 | |
| CN103553701B (zh) | 一种泡沫陶瓷保温材料的制备方法及其产品 | |
| CN107586102A (zh) | 一种花岗岩废石粉泡沫陶瓷及其制备方法 | |
| CN101659543A (zh) | 含锆复合烧结超轻质无机材料及其制备方法 | |
| CN104445958A (zh) | 一种氟硅碱钙石微晶增强泡沫玻璃及其制备方法 | |
| CN111704440A (zh) | 一种轻质多孔骨料及其制备工艺 | |
| CN104844258A (zh) | 一种掺加废旧橡胶的加气块 | |
| CN112551979A (zh) | 一种蒸压加气混凝土及其制备方法 | |
| CN109608074B (zh) | 一种基于煤气化粗渣的轻骨料及其制备方法 | |
| CN102745959B (zh) | 一种陶粒自保温砌块及制备方法 | |
| CN116573950A (zh) | 一种利用粉煤灰和锂渣合成的发泡陶瓷及其制备方法 | |
| CN110040995A (zh) | 一种高温用轻质韧性莫来石骨料制备方法 | |
| CN104402493B (zh) | 免蒸自保温砌块及其制备方法 | |
| WO2014079126A1 (zh) | 一种生产轻质保温砖的方法 | |
| CN112500190A (zh) | 一种发泡轻质耐高温的硅藻土保温砖制备方法 | |
| CN114163253A (zh) | 一种高强度发泡陶瓷及其制备方法 | |
| CN115259823B (zh) | 一种轻质高强低导热系数加气混凝土及其制备方法 | |
| CN103373815A (zh) | 一种拜耳法赤泥多孔微晶玻璃及其制备方法 | |
| CN111072370A (zh) | 一种利用尾矿生产高强度烧结空心砖的工艺 |
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 | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 310012 99 Huaxing Road, Xihu District, Hangzhou, Zhejiang (Hangzhou Neusoft business building) Applicant after: Zhejiang Zheneng Technology Environmental Protection Group Co.,Ltd. Applicant after: SHANGHAI INSTITUTE OF CERAMICS, CHINESE ACADEMY OF SCIENCES Address before: 310012 99 Huaxing Road, Xihu District, Hangzhou, Zhejiang (Hangzhou Neusoft business building) Applicant before: Zhejiang Tiandi Environmental Protection Technology Co.,Ltd. Country or region before: China Applicant before: SHANGHAI INSTITUTE OF CERAMICS, CHINESE ACADEMY OF SCIENCES |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |