CN107903052A - 一种六钛酸钾晶须多孔陶瓷及其制备方法 - Google Patents
一种六钛酸钾晶须多孔陶瓷及其制备方法 Download PDFInfo
- Publication number
- CN107903052A CN107903052A CN201711145644.XA CN201711145644A CN107903052A CN 107903052 A CN107903052 A CN 107903052A CN 201711145644 A CN201711145644 A CN 201711145644A CN 107903052 A CN107903052 A CN 107903052A
- Authority
- CN
- China
- Prior art keywords
- crystal whisker
- preparation
- porous ceramics
- potassium titanate
- grinding
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- 239000013078 crystal Substances 0.000 title claims abstract 16
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 title claims abstract 16
- 239000000463 material Substances 0.000 claims abstract description 49
- 238000000227 grinding Methods 0.000 claims abstract description 44
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 38
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims abstract description 26
- 239000002699 waste material Substances 0.000 claims abstract description 26
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 18
- 239000012298 atmosphere Substances 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 16
- 235000019738 Limestone Nutrition 0.000 claims abstract description 15
- 239000006028 limestone Substances 0.000 claims abstract description 15
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 15
- 230000007935 neutral effect Effects 0.000 claims abstract description 13
- 235000011056 potassium acetate Nutrition 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 46
- 229910052700 potassium Inorganic materials 0.000 claims description 46
- 239000011591 potassium Substances 0.000 claims description 46
- 239000010936 titanium Substances 0.000 claims description 22
- 239000011734 sodium Substances 0.000 claims description 9
- 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 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims 2
- 239000001569 carbon dioxide Substances 0.000 claims 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims 1
- 229910052786 argon Inorganic materials 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 19
- 229910052719 titanium Inorganic materials 0.000 description 19
- 238000000034 method Methods 0.000 description 17
- 239000002994 raw material Substances 0.000 description 14
- 239000000047 product Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000003082 abrasive agent Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000012300 argon atmosphere Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000003181 co-melting Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007716 flux method Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect 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
- 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
- C04B35/46—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 titanium oxides or titanates
- C04B35/462—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 titanium oxides or titanates based on titanates
-
- 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
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5276—Whiskers, spindles, needles or pins
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
-
- 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
-
- 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
- C04B2235/658—Atmosphere during thermal treatment
-
- 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
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)
- Polishing Bodies And Polishing Tools (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明涉及一种六钛酸钾晶须多孔陶瓷及其制备方法。其技术方案是:将含钛废料于1000~1300℃热处理,粉磨,得粉磨料A。将50~70wt%的粉磨料A、10~20wt%的钛白粉和10~30wt%的热固性树脂混匀,成型,在1200~1400℃和中性气氛中热处理,粉磨,得粉磨料B。将40~60wt%的粉磨料B、10~30wt%的无水碳酸钾和10~30wt%的醋酸钾混匀,研磨,得到研磨料。将10~20wt%的粉磨料B、30~50wt%的研磨料、10~30wt%的石灰石颗粒、1~10wt%的无水碳酸钾、1~10wt%的无水碳酸钠和1~10wt%的热固性树脂混匀,成型;先后经600~800℃和900~1100℃热处理1~3小时,制得六钛酸钾晶须多孔陶瓷。本发明所制制品中晶须尺寸均匀,制品的耐压强度大和孔隙率高。
Description
技术领域
本发明属于多孔陶瓷技术领域。具体涉及一种六钛酸钾晶须多孔陶瓷及其制备方法。
背景技术
六钛酸钾晶须独特的连锁隧道式结构,使其具有优良的高强度、耐高温、化学稳定性、绝缘性及红外反射率高等特性,因而在隔热材料、增强材料、摩擦材料、过滤材料等领域得到广泛应用。目前,六钛酸钾晶须的制备方法主要有助熔剂法、熔融-骤冷法、燃烧法、水热法和烧结法等,虽具有各自的优点,但都存在一些不足,例如:助熔剂法制备的晶须长径比虽大、尺寸虽可控,但由助熔剂引入的杂质易夹杂在产物中,很难清除干净,影响晶须的性能;熔融-骤冷法需要把原料高温熔融、骤冷后,将随后的物料经过多次高温煅烧处理,制得的晶须在结晶过程中容易结团和成块,能耗大,生产成本过高;水热法需要高温高压,条件苛刻;烧结法则存在晶须尺寸不易控制、晶须分离困难等问题。
六钛酸钾晶须多孔陶瓷是以六钛酸钾晶须为主要原料制备的材料,虽具有共知的优点,但也存在一些不足:⑴制备过程中引入的添加剂、结合剂或填料,很多为有机物,在产品制备或高温使用过程中,发生分解、氧化而产生有毒或污染性气体排放,影响环境;⑵制备过程中引入的添加剂或助熔剂,容易导致晶须之间粘连、团聚,其易与晶须发生副反应,产生杂相,影响材料的性能;⑶晶须在与其他原料混合、成型、烧成过程中,很难在体系中分散均匀,容易团聚,且在混合或搅拌过程中,晶须容易被机械装置折断,进而影响材料的性能;⑷产品制备过程中,原位形成的晶须,尺寸和分布很难有效控制,进而无法实现多孔陶瓷材料性能的优化。
近年来,随着化工、生物等行业的快速发展,钛及其化合物的用途越来越广,在产品生产及使用过程中产生的含钛废料也越来越多,如何高效利用含钛废料,成为一项非常重要和迫切的研究工作。当前,针对含钛废料开展的回收利用方法较多,如通过共熔、化学浸取、结晶及煅烧等工艺回收钛,虽取得了长足的发展,但现有的技术大多工艺复杂,且经过提取钛后,仍会产生二次废料。
发明内容
本发明旨在克服现有技术的不足,目的是提供一种生产成本低、工艺简单和无二次废料产生的六钛酸钾晶须多孔陶瓷的制备方法,用该方法制备的六钛酸钾晶须多孔陶瓷中晶须尺寸均匀,六钛酸钾晶须多孔陶瓷的耐压强度大和孔隙率高。
为实现上述目的,本发明采用的技术方案的步骤是:
第一步、将含钛废料于1000~1300℃条件下热处理2~4小时,粉磨至粒度小于0.045mm,得到粉磨料A。
第二步、将50~70wt%的所述粉磨料A、10~20wt%的钛白粉和10~30wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后在1200~1400℃条件下和中性气氛中热处理1~3小时,破碎,粉磨至粒度小于0.088mm,得到粉磨料B。
第三步,将40~60wt%的所述粉磨料B、10~30wt%的无水碳酸钾和10~30wt%的醋酸钾混合均匀,研磨0.5~1小时,得到研磨料。
第三步,将10~20wt%的所述粉磨料B、30~50wt%的研磨料、10~30wt%的石灰石颗粒、1~10wt%的无水碳酸钾、1~10wt%的无水碳酸钠和1~10wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后于600~800℃条件下热处理1~3小时,再于900~1100℃条件下热处理1~3小时,制得六钛酸钾晶须多孔陶瓷。
所述含钛废料:Ti含量大于52wt%,Al、Ni、V、Co、Cr、Ca、Si的含量之和小于0.9wt%;含钛废料的粒度小于0.088mm。
所述钛白粉的粒度小于0.088mm,所述钛白粉中TiO2的含量大于99wt%。
所述中性气氛为氮气气氛或为氩气气氛。
所述无水碳酸钾的粒度小于0.088mm,所述无水碳酸钾中K2CO3的含量大于99wt%。
所述醋酸钾的粒度小于0.088mm,所述醋酸钾的纯度大于99wt%。
所述石灰石颗粒的粒度为0.088~0.25mm,所述石灰石颗粒中CaO的含量大于54wt%。
所述无水碳酸钠的粒度小于0.088mm,所述无水碳酸钠中Na2CO3的含量大于99wt%。
由于采用上述技术方案,本发明与现有技术相比具有如下积极效果:
⑴本发明在对含钛废料的组成、结构及其物相随温度的演变等方面研究基础上,将产品的制备过程分步控制:原料性质调节、形成中间相好材料微结构形成。通过严格限定原料的粒度、中间产物的粒度、处理温度、处理时间和气氛等制备过程的技术参数,为六钛酸钾晶须在结构中的形成与均匀分布提供了必备条件,使所制备的六钛酸钾晶须多孔陶瓷中晶须尺寸均匀,所制制品耐压强度大和孔隙率高。
⑵本发明以含钛废料为主要原料,再配以钛白粉、热固性树脂、无水碳酸钾、无水碳酸钠、石灰石等工业常见的原料,将制备过程分步控制,既降低了高温处理导致的能耗和物料损失,又对多孔陶瓷微结构形成所对应的不同阶段进行了精确调节,实现了产品性能、制备过程能耗和物料成本的均衡控制。因此,不但所采用的原料来源广泛,而且生产工艺简单、生产成本低和无二次废料产生。
本发明制备的六钛酸钾晶须多孔陶瓷经检测:六钛酸钾晶须的直径为0.5~2μm,六钛酸钾晶须的长度为3~20μm;六钛酸钾晶须多孔陶瓷的常温耐压强度大于7MPa,孔隙率大于40%。
因此,本发明具有生产成本低、工艺简单和无二次废料产生的特点,所制备的六钛酸钾晶须多孔陶瓷中晶须尺寸均匀,六钛酸钾晶须多孔陶瓷的耐压强度大和孔隙率高。
具体实施方式
下面结合具体实施方式对本发明做进一步的描述,并非对其保护范围的限制。
为避免重复,先将本具体实施方式的原料统一描述如下,各实施例中不再赘述:
所述含钛废料:Ti含量大于52wt%,Al、Ni、V、Co、Cr、Ca、Si的含量之和小于0.9wt%;含钛废料的粒度小于0.088mm。
所述钛白粉的粒度小于0.088mm,所述钛白粉中TiO2的含量大于99wt%。
所述无水碳酸钾的粒度小于0.088mm,所述无水碳酸钾中K2CO3的含量大于99wt%。
所述醋酸钾的粒度小于0.088mm,所述醋酸钾的纯度大于99wt%。
所述石灰石颗粒的粒度为0.088~0.25mm,所述石灰石颗粒中CaO的含量大于54wt%。
所述无水碳酸钠的粒度小于0.088mm,所述无水碳酸钠中Na2CO3的含量大于99wt%。
实施例1
一种六钛酸钾晶须多孔陶瓷及其制备方法。本实施例所述制备方法的步骤是:
第一步、将含钛废料于1000~1300℃条件下热处理2~4小时,粉磨至粒度小于0.045mm,得到粉磨料A。
第二步、将50~60wt%的所述粉磨料A、10~20wt%的钛白粉和20~30wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后在1200~1400℃条件下和中性气氛中热处理1~3小时,破碎,粉磨至粒度小于0.088mm,得到粉磨料B。
第三步,将40~50wt%的所述粉磨料B、20~30wt%的无水碳酸钾和20~30wt%的醋酸钾混合均匀,研磨0.5~1小时,得到研磨料。
第三步,将10~20wt%的所述粉磨料B、40~50wt%的研磨料、10~20wt%的石灰石颗粒、1~10wt%的无水碳酸钾、1~10wt%的无水碳酸钠和1~10wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后于600~800℃条件下热处理1~3小时,再于900~1100℃条件下热处理1~3小时,制得六钛酸钾晶须多孔陶瓷。
所述中性气氛为氮气气氛。
本实施例制备的六钛酸钾晶须多孔陶瓷经检测:六钛酸钾晶须的直径为0.5~2μm,长度为3~20μm,六钛酸钾晶须多孔陶瓷的常温耐压强度大于9MPa;孔隙率大于40%。
实施例2
一种六钛酸钾晶须多孔陶瓷及其制备方法。本实施例所述制备方法的步骤是:
第一步、将含钛废料于1000~1300℃条件下热处理2~4小时,粉磨至粒度小于0.045mm,得到粉磨料A。
第二步、将60~70wt%的所述粉磨料A、10~20wt%的钛白粉和10~20wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后在1200~1400℃条件下和中性气氛中热处理1~3小时,破碎,粉磨至粒度小于0.088mm,得到粉磨料B。
第三步,将50~60wt%的所述粉磨料B、10~20wt%的无水碳酸钾和20~30wt%的醋酸钾混合均匀,研磨0.5~1小时,得到研磨料。
第三步,将10~20wt%的所述粉磨料B、30~40wt%的研磨料、20~30wt%的石灰石颗粒、1~10wt%的无水碳酸钾、1~10wt%的无水碳酸钠和1~10wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后于600~800℃条件下热处理1~3小时,再于900~1100℃条件下热处理1~3小时,制得六钛酸钾晶须多孔陶瓷。
所述中性气氛为氮气气氛或为氩气气氛。
本实施例制备的六钛酸钾晶须多孔陶瓷经检测:六钛酸钾晶须的直径为0.5~2μm、长度为3~20μm;六钛酸钾晶须多孔陶瓷的常温耐压强度大于7MPa,孔隙率大于50%。
实施例3
一种六钛酸钾晶须多孔陶瓷及其制备方法。本实施例所述制备方法的步骤是:
第一步、将含钛废料于1000~1300℃条件下热处理2~4小时,粉磨至粒度小于0.045mm,得到粉磨料A。
第二步、将50~60wt%的所述粉磨料A、10~20wt%的钛白粉和20~30wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后在1200~1400℃条件下和中性气氛中热处理1~3小时,破碎,粉磨至粒度小于0.088mm,得到粉磨料B。
第三步,将50~60wt%的所述粉磨料B、20~30wt%的无水碳酸钾和10~20wt%的醋酸钾混合均匀,研磨0.5~1小时,得到研磨料。
第三步,将10~20wt%的所述粉磨料B、40~50wt%的研磨料、10~20wt%的石灰石颗粒、1~10wt%的无水碳酸钾、1~10wt%的无水碳酸钠和1~10wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后于600~800℃条件下热处理1~3小时,再于900~1100℃条件下热处理1~3小时,制得六钛酸钾晶须多孔陶瓷。
所述中性气氛为氮气气氛。
本实施例制备的六钛酸钾晶须多孔陶瓷经检测:六钛酸钾晶须的直径为0.5~2μm,长度为3~20μm;六钛酸钾晶须多孔陶瓷的常温耐压强度大于8MPa,孔隙率大于50%。
实施例4
一种六钛酸钾晶须多孔陶瓷及其制备方法。本实施例所述制备方法的步骤是:
第一步、将含钛废料于1000~1300℃条件下热处理2~4小时,粉磨至粒度小于0.045mm,得到粉磨料A。
第二步、将60~70wt%的所述粉磨料A、10~20wt%的钛白粉和10~20wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后在1200~1400℃条件下和中性气氛中热处理1~3小时,破碎,粉磨至粒度小于0.088mm,得到粉磨料B。
第三步,将40~50wt%的所述粉磨料B、20~30wt%的无水碳酸钾和20~30wt%的醋酸钾混合均匀,研磨0.5~1小时,得到研磨料。
第三步,将10~20wt%的所述粉磨料B、30~40wt%的研磨料、20~30wt%的石灰石颗粒、1~10wt%的无水碳酸钾、1~10wt%的无水碳酸钠和1~10wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后于600~800℃条件下热处理1~3小时,再于900~1100℃条件下热处理1~3小时,制得六钛酸钾晶须多孔陶瓷。
所述中性气氛为氩气气氛。
本实施例制备的六钛酸钾晶须多孔陶瓷经检测:六钛酸钾晶须的直径为0.5~2μm,长度为3~20μm;六钛酸钾晶须多孔陶瓷的常温耐压强度大于10MPa,孔隙率大于40%。
本具体实施方式与现有技术相比具有如下积极效果:
⑴本具体实施方式在对含钛废料的组成、结构及其物相随温度的演变等方面研究基础上,将产品的制备过程分步控制:原料性质调节、形成中间相好材料微结构形成。通过严格限定原料的粒度、中间产物的粒度、处理温度、处理时间和气氛等制备过程的技术参数,为六钛酸钾晶须在结构中的形成与均匀分布提供了必备条件,使所制备的六钛酸钾晶须多孔陶瓷中晶须尺寸均匀,所制制品耐压强度大和孔隙率高。
⑵本具体实施方式以含钛废料为主要原料,再配以钛白粉、热固性树脂、无水碳酸钾、无水碳酸钠、石灰石等工业常见的原料,将制备过程分步控制,既降低了高温处理导致的能耗和物料损失,又对多孔陶瓷微结构形成所对应的不同阶段进行了精确调节,实现了产品性能、制备过程能耗和物料成本的均衡控制。因此,不但所采用的原料来源广泛,而且生产工艺简单、生产成本低和无二次废料产生。
本具体实施方式制备的六钛酸钾晶须多孔陶瓷经检测:六钛酸钾晶须的直径为0.5~2μm,六钛酸钾晶须的长度为3~20μm;六钛酸钾晶须多孔陶瓷的常温耐压强度大于7MPa,孔隙率大于40%。
因此,本具体实施方式具有生产成本低、工艺简单和无二次废料产生的特点,所制备的六钛酸钾晶须多孔陶瓷中晶须尺寸均匀,六钛酸钾晶须多孔陶瓷的耐压强度大和孔隙率高。
Claims (9)
1.一种六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述制备方法的具体步骤是:
第一步、将含钛废料于1000~1300℃条件下热处理2~4小时,粉磨至粒度小于0.045mm,得到粉磨料A;
第二步、将50~70wt%的所述粉磨料A、10~20wt%的钛白粉和10~30wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后在1200~1400℃条件下和中性气氛中热处理1~3小时,破碎,粉磨至粒度小于0.088mm,得到粉磨料B;
第三步,将40~60wt%的所述粉磨料B、10~30wt%的无水碳酸钾和10~30wt%的醋酸钾混合均匀,研磨0.5~1小时,得到研磨料;
第三步,将10~20wt%的所述粉磨料B、30~50wt%的研磨料、10~30wt%的石灰石颗粒、1~10wt%的无水碳酸钾、1~10wt%的无水碳酸钠和1~10wt%的热固性树脂混合均匀,在50~100MPa条件下压制成型;然后于600~800℃条件下热处理1~3小时,再于900~1100℃条件下热处理1~3小时,制得六钛酸钾晶须多孔陶瓷。
2.根据权利要求1所述六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述含钛废料:Ti含量大于52wt%,Al、Ni、V、Co、Cr、Ca、Si的含量之和小于0.9wt%;所述含钛废料的粒度小于0.088mm。
3.根据权利要求1所述六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述钛白粉的粒度小于0.088mm,所述钛白粉中TiO2的含量大于99wt%。
4.根据权利要求1所述六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述中性气氛为氮气气氛或为氩气气氛。
5.根据权利要求1所述六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述无水碳酸钾的粒度小于0.088mm,所述无水碳酸钾中K2CO3的含量大于99wt%。
6.根据权利要求1所述六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述醋酸钾的粒度小于0.088mm,所述醋酸钾的纯度大于99wt%。
7.根据权利要求1所述六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述石灰石颗粒的粒度为0.088~0.25mm,所述石灰石颗粒中CaO的含量大于54wt%。
8.根据权利要求1所述六钛酸钾晶须多孔陶瓷的制备方法,其特征在于所述无水碳酸钠的粒度小于0.088mm,所述无水碳酸钠中Na2CO3的含量大于99wt%。
9.一种六钛酸钾晶须多孔陶瓷,其特征在于所述六钛酸钾晶须多孔陶瓷是根据权利要求1~8项中任一项所述六钛酸钾晶须多孔陶瓷的制备方法所制备的六钛酸钾晶须多孔陶瓷。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145644.XA CN107903052A (zh) | 2017-11-17 | 2017-11-17 | 一种六钛酸钾晶须多孔陶瓷及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145644.XA CN107903052A (zh) | 2017-11-17 | 2017-11-17 | 一种六钛酸钾晶须多孔陶瓷及其制备方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107903052A true CN107903052A (zh) | 2018-04-13 |
Family
ID=61846026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711145644.XA Pending CN107903052A (zh) | 2017-11-17 | 2017-11-17 | 一种六钛酸钾晶须多孔陶瓷及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107903052A (zh) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240450A (zh) * | 2007-02-07 | 2008-08-13 | 张毅 | 一种生产钛酸钾系列晶须及二氧化钛晶须产品的合成制备方法 |
| US20080297979A1 (en) * | 2007-04-12 | 2008-12-04 | Tdk Corporation | Dielectric ceramic composition and electronic device |
| CN102190488A (zh) * | 2010-03-03 | 2011-09-21 | 株式会社村田制作所 | 电介体陶瓷及层叠陶瓷电容器 |
| JP2011195425A (ja) * | 2010-03-24 | 2011-10-06 | Murata Mfg Co Ltd | 誘電体セラミックおよび積層セラミックコンデンサ |
| CN103342571A (zh) * | 2013-07-10 | 2013-10-09 | 武汉理工大学 | 六钛酸钾晶须隔热保温材料的制备方法 |
| CN104947176A (zh) * | 2015-06-23 | 2015-09-30 | 武汉科技大学 | 一种空心结构钛酸镁钾晶须材料及其制备方法 |
-
2017
- 2017-11-17 CN CN201711145644.XA patent/CN107903052A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240450A (zh) * | 2007-02-07 | 2008-08-13 | 张毅 | 一种生产钛酸钾系列晶须及二氧化钛晶须产品的合成制备方法 |
| US20080297979A1 (en) * | 2007-04-12 | 2008-12-04 | Tdk Corporation | Dielectric ceramic composition and electronic device |
| CN102190488A (zh) * | 2010-03-03 | 2011-09-21 | 株式会社村田制作所 | 电介体陶瓷及层叠陶瓷电容器 |
| JP2011195425A (ja) * | 2010-03-24 | 2011-10-06 | Murata Mfg Co Ltd | 誘電体セラミックおよび積層セラミックコンデンサ |
| CN103342571A (zh) * | 2013-07-10 | 2013-10-09 | 武汉理工大学 | 六钛酸钾晶须隔热保温材料的制备方法 |
| CN104947176A (zh) * | 2015-06-23 | 2015-09-30 | 武汉科技大学 | 一种空心结构钛酸镁钾晶须材料及其制备方法 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107935555B (zh) | 一种镍铁渣陶瓷及其制备方法 | |
| CN105130218B (zh) | 一种低钙硅酸盐水泥及其制备与硬化方法 | |
| CN105129744A (zh) | 一种磷石膏制硫酸联产水泥预热分解的方法 | |
| CN104947176B (zh) | 一种空心结构钛酸镁钾晶须材料及其制备方法 | |
| CN108046621A (zh) | 一种煅烧白云石粉的制备方法 | |
| CN101988158B (zh) | 一种含钛废渣的综合利用方法 | |
| CN105837229B (zh) | 一种镁铝尖晶石砖的制备方法 | |
| CN103420684B (zh) | 六铝酸钙/钙长石复相轻质隔热保温耐火材料及其制备方法 | |
| CN104446363A (zh) | 一种碳酸锰渣制备陶粒的方法 | |
| CN106747512A (zh) | 一种钛铝酸钙粉体及其制备方法 | |
| US20050116395A1 (en) | Method for aluminum residue ash recycling utilization | |
| CN110204323A (zh) | 一种节能型堇青石锆英石复相材料及其制备方法 | |
| CN110055417B (zh) | 一种从钒渣混料中高效分离钒钛的方法 | |
| CN104844240B (zh) | 高红外反射率镁橄榄石轻质耐火保温材料及其制备方法 | |
| CN105036167A (zh) | 一种六铝酸钙及其制备方法 | |
| CN107740178A (zh) | 一种六钛酸钾晶须隔热材料及其制备方法 | |
| CN107903052A (zh) | 一种六钛酸钾晶须多孔陶瓷及其制备方法 | |
| CN106673668A (zh) | 一种氮化硅陶瓷及其制备方法 | |
| CN102826852B (zh) | 一种氮化钛-氧化铝复相耐磨耐高温陶瓷材料的制备方法 | |
| CN107868980A (zh) | 一种六钛酸钠晶须隔热材料及其制备方法 | |
| CN107903054A (zh) | 一种六钛酸钠晶须多孔陶瓷及其制备方法 | |
| CN106278301B (zh) | 一种水泥窑用尖晶石质耐火涂料及其制备方法 | |
| CN111153681A (zh) | 利用废料制作的陶土及其制备方法 | |
| CN103396145A (zh) | 一种尖晶石-钇铝石榴石耐火材料及其制备方法 | |
| CN107829140A (zh) | 以含钛废料为原料的钛酸镁钾晶须及其制备方法 |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180413 |