CN107010973A - 一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法 - Google Patents
一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法 Download PDFInfo
- Publication number
- CN107010973A CN107010973A CN201710325091.XA CN201710325091A CN107010973A CN 107010973 A CN107010973 A CN 107010973A CN 201710325091 A CN201710325091 A CN 201710325091A CN 107010973 A CN107010973 A CN 107010973A
- Authority
- CN
- China
- Prior art keywords
- waste material
- cutting waste
- crystalline silicon
- silicon cutting
- mullite
- 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.)
- Granted
Links
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
- C04B35/01—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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
-
- 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
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3281—Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
-
- 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
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/405—Iron group metals
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
- 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
本发明公开了一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法,属于耐火材料领域。本发明的耐火材料包括以下重量百分含量的各组份:晶体硅切割废料20~85%;氧化铝粉15~80%。本发明将晶体硅切割废料于250~300oC保温2~4h,再将废料球磨过400目筛,以完成废料的预处理;将预处理后的废料与氧化铝粉均匀混合压制成坯体;脱模后的坯体在110oC干燥2~4h;干燥后的坯体以1~5oC/min的速率升温到1515~1550oC范围内烧结1~4h并随炉冷却。本发明为晶体硅切割废料的回收利用提供新的思路,变废为宝,治理环境污染的同时节约了资源。以晶体硅切割废料中的SiC和Si为硅源,以SiC为成孔剂,无需添加发泡剂或成孔剂,降低生产成本。制备工艺流程简便,产品质量优异,可在建筑领域广泛推广。
Description
技术领域
本发明涉及一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法,属于耐火材料技术领域。
背景技术
轻质多孔隔热耐火材料具有隔热、防火、耐高温等功能,是一种新型工业窑炉用耐火材料。徐明扬等以晶体硅切割废料和Al2O3为主要原料,添加石墨粉作成孔剂,烧结制备出多孔SiC陶瓷。Al2O3和石墨粉掺量分别为30%和10%、烧结温度为1450oC、烧结时间为4h时制备的多孔陶瓷气孔率达42.21%、热膨胀系数为6.64×10-6K-1。杨道媛等则以高铝矾土和冶金硅灰为主要原料,添加聚苯乙烯球作成孔剂,制备出轻质高强的莫来石-刚玉耐火材料。王华等以安徽合肥粉煤灰和当地的黏土为主要原料,添加0.3%的十二烷基苯磺酸钠作发泡剂,采用发泡注浆法在1200oC制备了轻质莫来石耐火制品。这些利用固体废弃物制备轻质多孔隔热耐火材料均需添加发泡剂或成孔剂,工序过程较复杂,成本较高。
莫来石具有耐高温、导热系数小、荷重软化温度高等优良性能,近年来研究人员已成功利用煤矸石、用后Al2O3-C滑板砖、稻壳灰、铝渣等固体废弃物制备出莫来石质耐火材料。晶体硅切割废料是晶体硅片切割过程中排放的固体废弃物,主要由磨料SiC、晶体Si和Fe组成,还含有一定量的聚乙二醇等。晶体硅切割废料堆放占用大量土地,并造成环境污染,还会造成资源的浪费。但并未出现利用晶体硅切割废料为主要原料来制备莫来石质耐火材料的报道。
发明内容
本发明提供一种经由晶体硅切割废料,仅添加不同含量氧化铝制得的坯体,直接加热制备轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法。该方法的思想是通过控制烧结温度和升温速率来控制晶体硅切割废料的氧化过程、SiC氧化比例和晶体硅切割废料与Al2O3粉的比例,使坯体中的SiO2适合与Al2O3生成粘度适中的液相,同时在此液相形成温度范围内另一部分SiC的氧化产生CO2气体,气体封闭于液相中,最终冷却形成多孔结构。另一方面,使SiO2与Al2O3仅生成少量液相,仅起促进坯体烧结致密的作用;减少晶体硅切割废料含量,使SiC较快氧化完全,且生成莫来石相。
本发明通过以下技术方案予以实现:
提供一种轻质复相多孔隔热耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 50~85重量份;
氧化铝粉 15~50重量份。
提供一种莫来石质耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 20~33重量份;
氧化铝粉 67~80重量份。
所述的晶体硅切割废料主要成分为SiC和Si,SiC所占重量百分含量为55~65%,Si所占重量百分含量为25~30%;作为优选,晶体硅切割废料包括以下重量百分含量的各组份:SiC62.63%,Si27.49%,Fe8.58%,Al2O30.38%,CuO0.31%,CaO0.25%,ZnO0.13%,SO30.13%,Na2O0.10%。
本发明所述轻质复相多孔隔热耐火材料的烧结温度为1515~1535oC,主晶相为莫来石和方石英,且气孔率可由晶体硅切割废料在坯体中所占的重量百分含量和烧结温度制度控制,所述晶体硅切割废料在原料中所占的重量百分含量优选为70~80%。
本发明所述轻质复相多孔隔热耐火材料随晶体硅切割废料在坯体中所占的重量百分含量的增加,莫来石相含量一直增加,方石英相含量一直减少,而气孔率先增加后减小,导热系数先减小后增加,耐火度一直增加。
本发明所述轻质复相多孔隔热耐火材料随烧结温度的增加,莫来石相含量增加,方石英相含量减少,气孔率增加,导热系数减小,耐火度略有增加。
本发明所述莫来石质耐火材料的莫来石相含量可由晶体硅切割废料在坯体中所占的重量百分含量控制,优选为25~30%。
本发明所述莫来石质耐火材料随晶体硅切割废料在坯体中所占的重量百分含量的增加,方石英相含量一直减少,刚玉相含量一直增加,而莫来石相含量先增加后减少,气孔率先减少后增加,耐火度均大于1800oC。
本发明提供了所述轻质复相多孔隔热耐火材料的制备方法,包括以下步骤:
(1)将晶体硅切割废料置于高温电阻炉中于250~300oC保温2~4h,以除掉废料中的大部分聚乙二醇;
(2)将经步骤(1)处理的晶体硅切割废料球磨至全部过400目筛,得到预处理后的晶体硅切割废料;
(3)将预处理后的晶体硅切割废料与氧化铝粉按比例混合均匀得混合料;
(4)将混合料置于模具中以50MPa的压力挤压成型,脱模后得到一定形状的坯体;
(5)将坯体置于恒温干燥箱中经110oC干燥2~4h即得耐火材料干坯;
(6)将耐火材料干坯置于高温电阻炉内以5oC/min的速率升温到900oC,再以3oC/min的速率升温到1400oC,最后以1oC/min的速率升温到1515~1535oC范围内并烧结1~4h,随炉冷却后即可得到多孔轻质隔热耐火材料产品。
本发明同时提供了所述莫来石质耐火材料的制备方法,包括以下步骤:
(1)将晶体硅切割废料置于高温电阻炉中于250~300oC保温2~4h,以除掉废料中的大部分聚乙二醇;
(2)将经步骤(1)处理的晶体硅切割废料球磨至全部过400目筛,得到预处理后的晶体硅切割废料;
(3)将预处理后的晶体硅切割废料与氧化铝粉按比例混合均匀得混合料;
(4)将混合料置于模具中以50MPa的压力挤压成型,脱模后得到一定形状的坯体;
(5)将坯体置于恒温干燥箱中经110oC干燥2~4h即得耐火材料干坯;
(6)将耐火材料干坯置于高温电阻炉内以5oC/min的速率升温到900oC,再以3oC/min的速率升温到1400oC,最后以1oC/min的速率升温到1530~1550oC范围内并烧结1~4h,随炉冷却后即可得到莫来石质耐火材料产品。
本发明的有益效果:
本发明的制备方法工艺简单,可以制备轻质复相多孔隔热耐火材料和莫来石质耐火材料,较大限度地利用了晶体硅切割废料中的各组份,产品附加值高。
本发明所述的轻质复相多孔隔热耐火材料,以晶体硅切割废料中的SiC为成孔材料,无需发泡剂或成孔剂等添加剂,降低生产成本。
本发明所述的莫来石质耐火材料,以晶体硅切割废料中的SiC和Si为硅源,实现了废物利用。
具体实施方式:
下面结合具体实施例来进一步详细说明本发明。
实施例1
一种轻质复相多孔隔热耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 85%;
氧化铝粉 15%。
所述的晶体硅切割废料主要成分为SiC和Si,包括以下重量百分含量的各组份:SiC62.63%,Si27.49%,Fe8.58%,Al2O30.38%,CuO0.31%,CaO0.25%,ZnO0.13%,SO30.13%,Na2O0.10%。
制备过程如下:
(1)将晶体硅切割废料置于高温电阻炉中于250~300oC保温2~4h,以除掉废料中的大部分聚乙二醇;
(2)将经步骤(1)处理的晶体硅切割废料球磨至全部过400目筛,得到预处理后的晶体硅切割废料;
(3)将预处理后的晶体硅切割废料与氧化铝粉按比例混合均匀得混合料;
(4)将混合料置于模具中以50MPa的压力挤压成型,脱模后得到一定形状的坯体;
(5)将坯体置于恒温干燥箱中经110oC干燥2~4h即得耐火材料干坯;
(6)将耐火材料干坯置于高温电阻炉内以5oC/min的速率升温到900oC,再以3oC/min的速率升温到1400oC,最后以1oC/min的速率升温到1515oC并烧结1~4h,随炉冷却后即可得到多孔复相轻质隔热耐火材料产品。
测定产品的性能如下:
莫来石相含量/% 22.90
方石英相含量/% 77.10
体积密度/(g﹒cm-3) 0.87
气孔率/% 52.37
导热系数/[W﹒(m﹒K)-1] 0.544
耐火度/oC 1550
上述轻质多孔隔热耐火材料以方石英和莫来石相为主,密度小、气孔率高、导热系数低、耐火度高,可用作高温隔热保温耐火材料广泛使用。
实施例2
一种轻质复相多孔隔热耐火材料,各组份的重量百分含量同实施例1。
所述的晶体硅切割废料中各组份的重量百分含量同实施例1。
除烧结温度改为1535oC外,制备方法同实施例1。
测定产品的性能如下:
莫来石相含量/% 30.25
方石英相含量/% 69.75
体积密度/(g﹒cm-3) 0.68
气孔率/% 66.15
导热系数/[W﹒(m﹒K)-1] 0.345
耐火度/oC 1560
上述轻质多孔隔热耐火材料以方石英和莫来石相为主,密度小、气孔率高、导热系数低、耐火度高,可用作高温隔热保温耐火材料广泛使用。
实施例3
一种轻质多孔隔热耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 67%;
氧化铝粉 33%。
所述的晶体硅切割废料中各组份的重量百分含量同实施例1。
制备方法同实施例1。
测定产品的性能如下:
莫来石相含量/% 42.81
方石英相含量/% 55.75
刚玉相含量/% 1.44
体积密度/(g﹒cm-3) 0.85
气孔率/% 64.19
导热系数/[W﹒(m﹒K)-1] 0.442
耐火度/oC 1560
上述轻质多孔隔热耐火材料以方石英和莫来石相为主,密度小、气孔率高、导热系数低、耐火度高,可用作高温隔热保温耐火材料广泛使用。
实施例4
一种轻质多孔隔热耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 50%;
氧化铝粉 50%。
所述的晶体硅切割废料中各组份的重量百分含量同实施例1。
制备方法同实施例1。
测定产品的性能如下:
莫来石相含量/% 54.71
方石英相含量/% 42.07
刚玉相含量/% 3.22
体积密度/(g﹒cm-3) 1.24
气孔率/% 52.44
导热系数/[W﹒(m﹒K)-1] 0.718
耐火度/oC 1600
上述轻质多孔隔热耐火材料以方石英和莫来石相为主,密度小、气孔率高、导热系数低、耐火度高,可用作高温隔热保温耐火材料广泛使用。
实施例5
一种莫来石质耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 33%;
氧化铝粉 67%。
所述的晶体硅切割废料中各组份的重量百分含量同实施例1。
制备过程如下:
(1)将晶体硅切割废料置于高温电阻炉中于250~300oC保温2~4h,以除掉废料中的大部分聚乙二醇;
(2)将经步骤(1)处理的晶体硅切割废料球磨至全部过400目筛,得到预处理后的晶体硅切割废料;
(3)将预处理后的晶体硅切割废料与氧化铝粉按比例混合均匀得混合料;
(4)将混合料置于模具中以50MPa的压力挤压成型,脱模后得到一定形状的坯体;
(5)将坯体置于恒温干燥箱中经110oC干燥2~4h即得耐火材料干坯;
(6)将耐火材料干坯置于高温电阻炉内以5oC/min的速率升温到900oC,再以3oC/min的速率升温到1400oC,最后以1oC/min的速率升温到1550oC并烧结1~4h,随炉冷却后即可得到莫来石质耐火材料产品。
测定产品的性能如下:
莫来石相含量/% 86.03
方石英相含量/% 9.64
刚玉相含量/% 4.33
体积密度/(g﹒cm-3) 1.48
气孔率/% 27.41
耐火度/oC >1800
上述莫来石质耐火材料以莫来石相为主,耐火度高,可作为高温窑炉用耐火材料广泛使用。
实施例6
一种莫来石质耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 25%;
氧化铝粉 75%。
所述的晶体硅切割废料中各组份的重量百分含量同实施例1。
制备方法同实施例5。
测定产品的性能如下:
莫来石相含量/% 92.99
方石英相含量/% 0.59
刚玉相含量/% 6.42
体积密度/(g﹒cm-3) 1.63
气孔率/% 25.17
耐火度/oC >1800
上述莫来石质耐火材料以莫来石相为主,耐火度高,可作为高温窑炉用耐火材料广泛使用。
实施例7
一种莫来石质耐火材料,包括以下重量百分含量的各组份:
晶体硅切割废料 20%;
氧化铝粉 80%。
所述的晶体硅切割废料中各组份的重量百分含量同实施例1。
制备方法同实施例5。
测定产品的性能如下:
莫来石相含量/% 89.80
方石英相含量/% ---
刚玉相含量/% 10.20
体积密度/(g﹒cm-3) 1.55
气孔率/% 26.22
耐火度/oC >1800
上述莫来石质耐火材料以莫来石相为主,耐火度高,可作为高温窑炉用耐火材料广泛使用。
Claims (10)
1.一种轻质复相多孔隔热耐火材料,其特征在于包括以下重量百分含量的各组份:
晶体硅切割废料 50~85%;
氧化铝粉 15~50%。
2.一种莫来石质耐火材料,其特征在于包括以下重量百分含量的各组份:
晶体硅切割废料 20~33%;
氧化铝粉 67~80%。
3.根据权利要求1、2所述轻质复相多孔隔热耐火材料和莫来石质耐火材料,其特征在于所述晶体硅切割废料中SiC所占重量百分含量为55~65%,Si所占重量百分含量为25~30%。
4.根据权利要求1、2、3所述轻质复相多孔隔热耐火材料和莫来石质耐火材料,其特征在于所述晶体硅切割废料包括以下重量百分含量的各组份:SiC62.63%,Si27.49%,Fe8.58%,Al2O30.38%,CuO0.31%,CaO0.25%,ZnO0.13%,SO30.13%,Na2O0.10%。
5.根据权利要求1、3、4所述轻质复相多孔隔热耐火材料,其特征在于晶相为莫来石、方石英和刚玉,莫来石相含量为22~55%,方石英相含量42~78%,刚玉相含量为0~4%。
6.根据权利要求1、3、4、5所述轻质复相多孔隔热耐火材料,其特征在于体积密度为0.75~1.25g/cm3,气孔率为50~68%,导热系数为0.350~0.720W/(m﹒K),耐火度为1550~1600oC。
7.根据权利要求2、3、4所述莫来石质耐火材料,其特征在于晶相为莫来石、方石英和刚玉,莫来石相含量为86~93%,方石英相含量0~10%,刚玉相含量为4~10%。
8.根据权利要求2、3、4、7所述莫来石质耐火材料,其特征在于体积密度为1.45~1.65g/cm3,气孔率为25~28%,耐火度为大于1800oC。
9.一种权利要求1所述轻质复相多孔隔热耐火材料的制备方法,其特征在于包括以下步骤:
(1)将晶体硅切割废料置于高温电阻炉中于250~300oC保温2~4h,以除掉废料中的大部分聚乙二醇;
(2)将经步骤(1)处理的晶体硅切割废料球磨至全部过400目筛,得到预处理后的晶体硅切割废料;
(3)将预处理后的晶体硅切割废料与氧化铝粉按比例混合均匀得混合料;
(4)将混合料置于模具中以50MPa的压力挤压成型,脱模后得到一定形状的坯体;
(5)将坯体置于恒温干燥箱中经110oC干燥2~4h即得耐火材料干坯;
(6)将耐火材料干坯置于高温电阻炉内以5oC/min的速率升温到900oC,再以3oC/min的速率升温到1400oC,最后以1oC/min的速率升温到1515~1535oC范围内并烧结1~4h,随炉冷却后即可得到轻质复相多孔隔热耐火材料产品。
10.一种权利要求2所述莫来石质耐火材料的制备方法,其特征在于包括以下步骤:
(1)将晶体硅切割废料置于高温电阻炉中于250~300oC保温2~4h,以除掉废料中的大部分聚乙二醇;
(2)将经步骤(1)处理的晶体硅切割废料球磨至全部过400目筛,得到预处理后的晶体硅切割废料;
(3)将预处理后的晶体硅切割废料与氧化铝粉按比例混合均匀得混合料;
(4)将混合料置于模具中以50MPa的压力挤压成型,脱模后得到一定形状的坯体;
(5)将坯体置于恒温干燥箱中经110oC干燥2~4h即得耐火材料干坯;
(6)将耐火材料干坯置于高温电阻炉内以5oC/min的速率升温到900oC,再以3oC/min的速率升温到1400oC,最后以1oC/min的速率升温到1530~1550oC范围内并烧结1~4h,随炉冷却后即可得到莫来石质耐火材料产品。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710325091.XA CN107010973B (zh) | 2017-05-10 | 2017-05-10 | 一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710325091.XA CN107010973B (zh) | 2017-05-10 | 2017-05-10 | 一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107010973A true CN107010973A (zh) | 2017-08-04 |
CN107010973B CN107010973B (zh) | 2020-05-19 |
Family
ID=59449998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710325091.XA Active CN107010973B (zh) | 2017-05-10 | 2017-05-10 | 一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107010973B (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109133880A (zh) * | 2018-08-26 | 2019-01-04 | 洛阳科创新材料股份有限公司 | 一种刚玉莫来石轻质砖的制备方法 |
CN111807812A (zh) * | 2020-07-13 | 2020-10-23 | 广东萨米特陶瓷有限公司 | 一种轻质高强陶瓷装饰板材及其制备方法 |
CN112853495A (zh) * | 2021-01-11 | 2021-05-28 | 东北大学 | 一种利用晶体硅切割废料制备类海胆结构莫来石晶须的方法 |
CN114751730A (zh) * | 2021-02-10 | 2022-07-15 | 海南大学 | 一种多孔莫来石陶瓷及其制备方法 |
CN116143135A (zh) * | 2023-02-28 | 2023-05-23 | 昆明理工大学 | 一种基于表面重构硅切割废料制备高比容量、高抗氧化性纳米硅负极的方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1528049A1 (de) * | 2003-10-31 | 2005-05-04 | Viessmann Werke GmbH & Co KG | Verfahren zur Herstellung eines Verbundkörpers aus Keramik |
CN102976785A (zh) * | 2012-12-12 | 2013-03-20 | 武汉科技大学 | 一种轻质Al2O3-SiC-C耐火砖及其制备方法 |
CN104788121A (zh) * | 2015-04-20 | 2015-07-22 | 武汉科技大学 | 一种莫来石质轻质耐火材料及其制备方法 |
CN106542827A (zh) * | 2016-10-31 | 2017-03-29 | 河南易成新能源股份有限公司 | 碳化硅陶瓷粉的绿色制备方法 |
-
2017
- 2017-05-10 CN CN201710325091.XA patent/CN107010973B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1528049A1 (de) * | 2003-10-31 | 2005-05-04 | Viessmann Werke GmbH & Co KG | Verfahren zur Herstellung eines Verbundkörpers aus Keramik |
CN102976785A (zh) * | 2012-12-12 | 2013-03-20 | 武汉科技大学 | 一种轻质Al2O3-SiC-C耐火砖及其制备方法 |
CN104788121A (zh) * | 2015-04-20 | 2015-07-22 | 武汉科技大学 | 一种莫来石质轻质耐火材料及其制备方法 |
CN106542827A (zh) * | 2016-10-31 | 2017-03-29 | 河南易成新能源股份有限公司 | 碳化硅陶瓷粉的绿色制备方法 |
Non-Patent Citations (1)
Title |
---|
杨昱桢等: "利用晶硅切割废砂浆制备SiC粉体", 《材料导报B:研究篇》 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109133880A (zh) * | 2018-08-26 | 2019-01-04 | 洛阳科创新材料股份有限公司 | 一种刚玉莫来石轻质砖的制备方法 |
CN109133880B (zh) * | 2018-08-26 | 2023-03-21 | 洛阳科创新材料股份有限公司 | 一种刚玉莫来石轻质砖的制备方法 |
CN111807812A (zh) * | 2020-07-13 | 2020-10-23 | 广东萨米特陶瓷有限公司 | 一种轻质高强陶瓷装饰板材及其制备方法 |
CN112853495A (zh) * | 2021-01-11 | 2021-05-28 | 东北大学 | 一种利用晶体硅切割废料制备类海胆结构莫来石晶须的方法 |
CN112853495B (zh) * | 2021-01-11 | 2022-03-11 | 东北大学 | 一种利用晶体硅切割废料制备类海胆结构莫来石晶须的方法 |
CN114751730A (zh) * | 2021-02-10 | 2022-07-15 | 海南大学 | 一种多孔莫来石陶瓷及其制备方法 |
CN116143135A (zh) * | 2023-02-28 | 2023-05-23 | 昆明理工大学 | 一种基于表面重构硅切割废料制备高比容量、高抗氧化性纳米硅负极的方法 |
Also Published As
Publication number | Publication date |
---|---|
CN107010973B (zh) | 2020-05-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107010973A (zh) | 一种轻质复相多孔隔热耐火材料和莫来石质耐火材料及其制备方法 | |
Ding et al. | Fabrication of mullite-bonded porous silicon carbide ceramics by in situ reaction bonding | |
CN103332958B (zh) | 一种具有梯度孔结构的泡沫陶瓷及其制备方法 | |
CN104072193B (zh) | 基于含硅铝固废的发泡陶瓷材料及制备防火保温板的方法 | |
CN101955371B (zh) | 一种闭合气孔泡沫陶瓷的制备方法 | |
Xi et al. | Effects of magnesium oxychloride and silicon carbide additives on the foaming property during firing for porcelain ceramics and their microstructure | |
CN105669173A (zh) | 一种综合利用珍珠岩废弃物生产的保温装饰陶瓷板及其生产方法 | |
CN111943714A (zh) | 一种低温烧结发泡陶瓷的生产工艺 | |
CN106542843A (zh) | 一种利用固体废弃物制备轻质保温墙体材料的方法 | |
CN102617180A (zh) | 一种多孔泡沫陶瓷及其制备方法 | |
CN109180143A (zh) | 纳米微晶复合发泡陶瓷装配式墙体砌筑材料及其制造方法 | |
CN104030572A (zh) | 一种高性能梯度泡沫玻璃保温材料及其制备方法 | |
CN107586124A (zh) | 轻质高强复合陶瓷材料及其制备方法 | |
CN103833406A (zh) | 发泡陶瓷保温板及其制备方法 | |
CN108503338B (zh) | 一种利用粉煤灰制备高强度发泡陶瓷材料的方法 | |
CN105175007B (zh) | 一种轻质保温砖 | |
CN108558363A (zh) | 一种外墙保温装饰一体化建筑材料的一次烧成制备方法 | |
CN104860712B (zh) | 一种利用废弃熔融石英坩埚制备微孔轻质隔热骨料的方法 | |
CN113896563B (zh) | 一种利用硼泥制备高强度发泡陶瓷材料的方法及发泡陶瓷材料 | |
CN111943642B (zh) | 一种高强度发泡陶瓷及其制备方法 | |
Cao et al. | Effects of nano-CaCO3 and nano-iron phosphate on microstructure and properties of SiO2 porous ceramics prepared by direct foaming | |
CN103922786B (zh) | 一种建筑外墙保温泡沫陶瓷材料 | |
CN111606689B (zh) | 一种废石粉轻质微晶发泡保温材料及其制造方法 | |
CA1098292A (en) | Method of making an insulating refractory | |
CN111499402B (zh) | 一种耐高温、强度高、轻质保温材料及其制备方法 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |