CN112759416B - 一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法 - Google Patents
一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法 Download PDFInfo
- Publication number
- CN112759416B CN112759416B CN202110056462.5A CN202110056462A CN112759416B CN 112759416 B CN112759416 B CN 112759416B CN 202110056462 A CN202110056462 A CN 202110056462A CN 112759416 B CN112759416 B CN 112759416B
- Authority
- CN
- China
- Prior art keywords
- porous ceramic
- aluminum titanate
- equal
- micro powder
- aluminum
- 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
- 229910000505 Al2TiO5 Inorganic materials 0.000 title claims abstract description 48
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 title claims abstract description 47
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000011575 calcium Substances 0.000 title claims abstract description 39
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 39
- 239000000919 ceramic Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000002893 slag Substances 0.000 claims abstract description 48
- 229910001200 Ferrotitanium Inorganic materials 0.000 claims abstract description 46
- 239000000843 powder Substances 0.000 claims abstract description 45
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 37
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 27
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 24
- 229910001593 boehmite Inorganic materials 0.000 claims abstract description 24
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 22
- 229910021538 borax Inorganic materials 0.000 claims abstract description 19
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 19
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 229920002472 Starch Polymers 0.000 claims abstract description 10
- 239000008107 starch Substances 0.000 claims abstract description 10
- 235000019698 starch Nutrition 0.000 claims abstract description 10
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 9
- 238000007580 dry-mixing Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000000498 ball milling Methods 0.000 claims abstract 2
- 238000002156 mixing Methods 0.000 claims abstract 2
- 239000011734 sodium Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 5
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 5
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- IXQWNVPHFNLUGD-UHFFFAOYSA-N iron titanium Chemical compound [Ti].[Fe] IXQWNVPHFNLUGD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 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 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 5
- 239000002245 particle Substances 0.000 description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 11
- 229910052593 corundum Inorganic materials 0.000 description 10
- 229910001845 yogo sapphire Inorganic materials 0.000 description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 7
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 238000003980 solgel method Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000006184 cosolvent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
-
- 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
- C04B33/1328—Waste materials; Refuse; Residues without additional 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
- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3218—Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
-
- 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
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
-
- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate or hypophosphite
-
- 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
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/606—Drying
-
- 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
- C04B2235/656—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
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明涉及一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法。其技术方案是：以55～65wt％的钛铁渣微粉、15～20wt％的氢氧化铝微粉、10～20wt％的勃姆石和5～15wt％的α‑Al2O3微粉为原料，外加所述原料20～25wt％的淀粉和1～2wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混30～60min，再外加所述原料2～5wt％的有机结合剂，球磨30～35min；在50～55MPa条件下机压成型，在100～110℃条件下干燥12～24h，然后在1350～1500℃条件下保温2～3h，制得六铝酸钙/钛酸铝多孔陶瓷材料。本发明具有成本低廉和和工艺简单的优点，所制备的六铝酸钙/钛酸铝多孔陶瓷气孔率高、热导率低、物相稳定不易分解、常温强度较大和热震稳定性优良。
Description
技术领域
本发明属于多孔陶瓷技术领域。具体涉及一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法。
背景技术
钛铁渣是铝热还原法冶炼铁钛合金时产生的废弃物。据统计，每生产一吨钛铁合金，排放钛铁渣1.1～1.5t。钛铁渣的主要化学成分为Al2O3、CaO和TiO2等，主晶相为六铝酸钙、钛铝酸钙和钛酸钙等。未处理的炉渣会造成一定的环境问题，故对钛铁渣利用的研究已引起本领域技术人员的关注。“一种以钛铁渣为主料的隔热耐火材料及其制备方法(CN106882973A)”、“一种钛铝酸钙隔热耐火材料及其制备方法(CN108558417A)”专利技术，通过溶胶凝胶法和发泡法制备的隔热耐火材料虽然具有较低的导热系数，但是采用溶胶凝胶法和发泡法造孔不仅工艺复杂且增加了制备成本，降低了材料的强度。
钛酸铝多孔陶瓷具有强度高、比表面积大、吸附性好和抗热震性能好等优点，被广泛应用到高温过滤器、催化剂载体和保温材料等领域。“一种多孔钛酸铝陶瓷的制备方法(CN105110813A)”采用溶胶凝胶法制备了多孔钛酸铝陶瓷，但是忽略了钛酸铝在700～1300℃条件下不稳定易分解、失去优良的热震稳定性的缺点。文献(陆洪彬.稳定钛酸铝及钛酸铝—莫来石复相陶瓷的研究[D].南京工业大学，2006.)采用外加添加剂抑制钛酸铝分解，促进钛酸铝的合成，制备了稳定的钛酸铝—莫来石复相陶瓷，但是该材料气孔率低、热导率高，无法应用在多孔陶瓷领域。
发明内容
本发明旨在克服现有技术缺陷，目的在于提供一种成本低廉和工艺简单的六铝酸钙/钛酸铝多孔陶瓷的制备方法，用该方法制备的多孔陶瓷材料的气孔率高、热导率低、物相稳定不易分解、常温强度较大和热震稳定性优良。
为实现上述目的，本发明采用的技术方案是：以55～65wt％的钛铁渣微粉、15～20wt％的氢氧化铝微粉、10～20wt％的勃姆石和5～15wt％的α-Al2O3微粉为原料，外加所述原料20～25wt％的淀粉和1～2wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混30～60min，再外加所述原料2～5wt％的有机结合剂，球磨30～35min；在50～55MPa条件下机压成型，在100～110℃条件下干燥12～24h，然后在1350～1500℃条件下保温2～3h，制得六铝酸钙/钛酸铝多孔陶瓷材料。
所述钛铁渣微粉的主要化学成分是：Al2O3≥73wt％，CaO≥10wt％，TiO2≥11wt％，Fe2O3≥0.6wt％，MgO≥1.4wt％；所述钛铁渣微粉的密度为3.28g/cm3，钛铁渣微粉的粒度≤60μm。
所述氢氧化铝微粉的Al2O3含量≥65wt％；氢氧化铝微粉的粒度≤10μm。
所述勃姆石微粉的Al2O3含量≥84wt％；勃姆石微粉的粒度≤20μm。
所述α-Al2O3微粉的Al2O3含量≥99.9wt％；α-Al2O3微粉的粒度≤0.025mm。
所述硼砂的Na2B4O7·5H2O含量≥99wt％；硼砂的粒度≤0.6mm。
所述有机结合剂为磷酸二氢钠、聚乙烯醇和树脂中的一种。
由于采用上述技术方案，本发明与现有技术相比具有以下优点：
1、本发明以钛铁渣微粉、氢氧化铝微粉、勃姆石和α-Al2O3微粉为原料，外加淀粉为造孔剂和硼砂为助溶剂，经干混、机压成型、干燥和烧成，工艺简单；所采用的原料钛铁渣的主晶相为钛铝酸钙、六铝酸钙和钛酸钙等，来源丰富，成本低廉，能显著降低六铝酸钙/钛酸铝多孔陶瓷的制备成本。
2、本发明采用的主要原料为钛铁渣，钛铁渣具有高的熔点、较高的常温强度、较低的热膨胀系数和导热系数，显著提高了六铝酸钙/钛酸铝多孔陶瓷的常温力学性能和隔热性能。
3、本发明利用氢氧化铝和勃姆石高温处理过程中的原位分解使材料产生疏松多孔的结构，提高了六铝酸钙/钛酸铝多孔陶瓷的真气孔率，降低了六铝酸钙/钛酸铝多孔陶瓷的导热性能。
4、本发明利用钛铁渣的多相性，如钛铁渣中的钛铝酸钙、二铝酸钙和钛酸钙等能与氢氧化铝和勃姆石分解后产生的氧化铝在热处理后反应生成钛酸铝，显著提高了六铝酸钙/钛酸铝多孔陶瓷的强度和比表面积，同时钛铁渣中的杂质Fe2O3、MgO能提高钛酸铝的稳定性，抑制其高温下的分解。
因此，本发明具有成本低廉和和工艺简单的优点，所制备的六铝酸钙/钛酸铝多孔陶瓷气孔率高、热导率低、物相稳定不易分解、常温强度较大和热震稳定性优良。
具体实施方式
一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法。本具体实施方式所述制备方法是：
以55～65wt％的钛铁渣微粉、15～20wt％的氢氧化铝微粉、10～20wt％的勃姆石和5～15wt％的α-Al2O3微粉为原料，外加所述原料20～25wt％的淀粉和1～2wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混30～60min，再外加所述原料2～5wt％的有机结合剂，球磨30～35min；在50～55MPa条件下机压成型，在100～110℃条件下干燥12～24h，然后在1350～1500℃条件下保温2～3h，制得六铝酸钙/钛酸铝多孔陶瓷材料。
所述钛铁渣微粉的主要化学成分是：Al2O3≥73wt％，CaO≥10wt％，TiO2≥11wt％，Fe2O3≥0.6wt％，MgO≥1.4wt％；所述钛铁渣微粉的密度为3.28g/cm3，钛铁渣微粉的粒度≤60μm。
所述氢氧化铝微粉的Al2O3含量≥65wt％。
所述勃姆石微粉的Al2O3含量≥84wt％。
所述α-Al2O3微粉的Al2O3含量≥99.9wt％。
所述硼砂的Na2B4O7·5H2O含量≥99wt％。
所述有机结合剂为磷酸二氢钠、聚乙烯醇和树脂中的一种。
本具体实施方式的实施例中：
所述氢氧化铝微粉的粒度≤10μm。
所述勃姆石微粉的粒度≤20μm。
所述α-Al2O3微粉的粒度≤0.025mm。
所述硼砂的粒度≤0.6mm。
实施例中不再赘述。
实施例1
一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法。本实施例所述制备方法是：
以55wt％的钛铁渣微粉、15wt％的氢氧化铝微粉、20wt％的勃姆石和10wt％的α-Al2O3微粉为原料，外加所述原料20wt％的淀粉和2wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混60min，再外加所述原料5wt％的有机结合剂，球磨35min；在50MPa条件下机压成型，在100℃条件下干燥20h，然后在1350℃条件下保温2h，制得六铝酸钙/钛酸铝多孔陶瓷材料。
所述钛铁渣微粉的主要化学成分是：Al2O3为73.01wt％，CaO为11.85wt％，TiO2为11.87wt％，Fe2O3为0.65wt％，MgO为1.5wt％；所述钛铁渣微粉的密度为3.28g/cm3，钛铁渣微粉的粒度≤60μm。
所述氢氧化铝微粉的Al2O3含量为65wt％。
所述勃姆石微粉的Al2O3含量为84wt％。
所述α-Al2O3微粉的Al2O3含量为99.9wt％。
所述硼砂的Na2B4O7·5H2O含量为99wt％。
所述有机结合剂为磷酸二氢钠。
实施例2
一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法。本实施例所述制备方法是：
以58wt％的钛铁渣微粉、16wt％的氢氧化铝微粉、11wt％的勃姆石和15wt％的α-Al2O3微粉为原料，外加所述原料25wt％的淀粉和1.4wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混50min，再外加所述原料4wt％的有机结合剂，球磨34min；在52MPa条件下机压成型，在105℃条件下干燥18h，然后在1400℃条件下保温2h，制得六铝酸钙/钛酸铝多孔陶瓷材料。
所述钛铁渣微粉的主要化学成分是：Al2O3为73.45wt％，CaO为11.92wt％，TiO2为11.4wt％，Fe2O3为0.63wt％，MgO为1.45wt％；所述钛铁渣微粉的密度为3.28g/cm3，钛铁渣微粉的粒度≤60μm。
所述氢氧化铝微粉的Al2O3含量为65.1wt％。
所述勃姆石微粉的Al2O3含量为84.2wt％。
所述α-Al2O3微粉的Al2O3含量为99.91wt％。
所述硼砂的Na2B4O7·5H2O含量为99.1wt％。
所述有机结合剂为聚乙烯醇。
实施例3
一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法。本实施例所述制备方法是：
以62wt％的钛铁渣微粉、18wt％的氢氧化铝微粉、12wt％的勃姆石和8wt％的α-Al2O3微粉为原料，外加所述原料23wt％的淀粉和1wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混40min，再外加所述原料3wt％的有机结合剂，球磨32min；在53MPa条件下机压成型，在110℃条件下干燥24h，然后在1450℃条件下保温3h，制得六铝酸钙/钛酸铝多孔陶瓷材料。
所述钛铁渣微粉的主要化学成分是：Al2O3为74.18wt％，CaO为11.6wt％，TiO2为11.08wt％，Fe2O3为0.61wt％，MgO为1.43wt％；所述钛铁渣微粉的密度为3.28g/cm3，钛铁渣微粉的粒度≤60μm。
所述氢氧化铝微粉的Al2O3含量为65.2wt％。
所述勃姆石微粉的Al2O3含量为84.3wt％。
所述α-Al2O3微粉的Al2O3含量为99.9wt％。
所述硼砂的Na2B4O7·5H2O含量为99.2wt％。
所述有机结合剂为树脂。
实施例4
一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法。本实施例所述制备方法是：
以65wt％的钛铁渣微粉、20wt％的氢氧化铝微粉、10wt％的勃姆石和5wt％的α-Al2O3微粉为原料，外加所述原料22wt％的淀粉和1.8wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混30min，再外加所述原料2wt％的有机结合剂，球磨30min；在55MPa条件下机压成型，在110℃条件下干燥12h，然后在1500℃条件下保温3h，制得六铝酸钙/钛酸铝多孔陶瓷材料。
所述钛铁渣微粉的主要化学成分是：Al2O3为75.8wt％，CaO为10.05wt％，TiO2为11.03wt％，Fe2O3为0.62wt％，MgO为1.41wt％；所述钛铁渣微粉的密度为3.28g/cm3，钛铁渣微粉的粒度≤60μm。
所述氢氧化铝微粉的Al2O3含量为65.3wt％。
所述勃姆石微粉的Al2O3含量为84.5wt％。
所述α-Al2O3微粉的Al2O3含量为99.91wt％。
所述硼砂的Na2B4O7·5H2O含量为99.3wt％。
所述有机结合剂为磷酸二氢钠。
本具体实施方式与现有技术相比具有以下优点：
1、本具体实施方式以钛铁渣微粉、氢氧化铝微粉、勃姆石和α-Al2O3微粉为原料，外加淀粉为造孔剂和硼砂为助溶剂，经过干混、机压成型、干燥和烧成，工艺简单；所采用的原料钛铁渣的主晶相为钛铝酸钙、六铝酸钙和钛酸钙等，来源丰富，成本低廉，能显著降低六铝酸钙/钛酸铝多孔陶瓷的制备成本。
2、本具体实施方式采用的主要原料为钛铁渣，钛铁渣具有高的熔点、较高的常温强度、较低的热膨胀系数和导热系数，显著提高了六铝酸钙/钛酸铝多孔陶瓷的常温力学性能和隔热性能。
3、本具体实施方式利用氢氧化铝和勃姆石高温处理过程中的原位分解使材料产生疏松多孔的结构，提高了六铝酸钙/钛酸铝多孔陶瓷的真气孔率，降低了六铝酸钙/钛酸铝多孔陶瓷的导热性能。
4、本具体实施方式利用钛铁渣的多相性，如钛铁渣中的钛铝酸钙、二铝酸钙和钛酸钙等能与氢氧化铝和勃姆石分解后产生的氧化铝在热处理后反应生成钛酸铝，显著提高了六铝酸钙/钛酸铝多孔陶瓷的强度和比表面积，同时钛铁渣中的杂质Fe2O3、MgO能提高钛酸铝的稳定性，抑制其高温下的分解。
因此，本具体实施方式具有成本低廉和和工艺简单的优点，所制备的六铝酸钙/钛酸铝多孔陶瓷气孔率高、热导率低、物相稳定不易分解、常温强度较大和热震稳定性优良。
Claims (8)
1.一种六铝酸钙/钛酸铝多孔陶瓷的制备方法，其特征在于：以55～65wt％的钛铁渣微粉、15～20wt％的氢氧化铝微粉、10～20wt％的勃姆石和5～15wt％的α-Al2O3微粉为原料，外加所述原料20～25wt％的淀粉和1～2wt％的硼砂，混合，得混合料；将所述混合料在球磨机中干混30～60min，再外加所述原料2～5wt％的有机结合剂，球磨30～35min；在50～55MPa条件下机压成型，在100～110℃条件下干燥12～24h，然后在1350～1500℃条件下保温2～3h，制得六铝酸钙/钛酸铝多孔陶瓷材料。
2.根据权利要求1所述的六铝酸钙/钛酸铝多孔陶瓷的制备方法，其特征在于所述钛铁渣微粉的主要化学成分是：Al2O3≥73wt％，CaO≥10wt％，TiO2≥11wt％，Fe2O3≥0.6wt％，MgO≥1.4wt％；所述钛铁渣微粉的密度为3.28g/cm3，钛铁渣微粉的粒度≤60μm。
3.根据权利要求1所述的六铝酸钙/钛酸铝多孔陶瓷的制备方法，其特征在于所述氢氧化铝微粉的Al2O3含量≥65wt％；氢氧化铝微粉的粒度≤10μm。
4.根据权利要求1所述的六铝酸钙/钛酸铝多孔陶瓷的制备方法，其特征在于所述勃姆石微粉的Al2O3含量≥84wt％；勃姆石微粉的粒度≤20μm。
5.根据权利要求1所述的六铝酸钙/钛酸铝多孔陶瓷的制备方法，其特征在于所述α-Al2O3微粉的Al2O3含量≥99.9wt％；α-Al2O3微粉的粒度≤0.025mm。
6.根据权利要求1所述的六铝酸钙/钛酸铝多孔陶瓷的制备方法，其特征在于所述硼砂的Na2B4O7·5H2O含量≥99wt％；硼砂的粒度≤0.6mm。
7.根据权利要求1所述的六铝酸钙/钛酸铝多孔陶瓷的制备方法，其特征在于所述有机结合剂为磷酸二氢钠、聚乙烯醇和树脂中的一种。
8.一种六铝酸钙/钛酸铝多孔陶瓷，其特征在于所述六铝酸钙/钛酸铝多孔陶瓷是根据权利要求1～7项中任一项所述的六铝酸钙/钛酸铝多孔陶瓷的制备方法所制备的六铝酸钙/钛酸铝多孔陶瓷。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110056462.5A CN112759416B (zh) | 2021-01-15 | 2021-01-15 | 一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110056462.5A CN112759416B (zh) | 2021-01-15 | 2021-01-15 | 一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112759416A CN112759416A (zh) | 2021-05-07 |
| CN112759416B true CN112759416B (zh) | 2023-01-17 |
Family
ID=75702047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110056462.5A Active CN112759416B (zh) | 2021-01-15 | 2021-01-15 | 一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112759416B (zh) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333741A (zh) * | 2009-02-25 | 2012-01-25 | 住友化学株式会社 | 钛酸铝系陶瓷烧结体的制造方法及钛酸铝系陶瓷烧结体 |
| CN106747527A (zh) * | 2017-03-01 | 2017-05-31 | 武汉科技大学 | 一种钛铝酸钙隔热耐火材料及其制备方法 |
| CN108752018A (zh) * | 2018-05-08 | 2018-11-06 | 武汉科技大学 | 一种钛铝酸钙-钛酸铝复相陶瓷及其制备方法 |
| CN110436914A (zh) * | 2019-07-29 | 2019-11-12 | 武汉科技大学 | 一种高孔隙率六铝酸钙泡沫陶瓷及其制备方法 |
| CN111892409A (zh) * | 2020-07-15 | 2020-11-06 | 武汉科技大学 | 六铝酸钙中空晶须增强铝钙质复相耐火材料及其制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4657822B2 (ja) * | 2005-06-14 | 2011-03-23 | 日本碍子株式会社 | セラミック構造体の製造方法 |
-
2021
- 2021-01-15 CN CN202110056462.5A patent/CN112759416B/zh active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333741A (zh) * | 2009-02-25 | 2012-01-25 | 住友化学株式会社 | 钛酸铝系陶瓷烧结体的制造方法及钛酸铝系陶瓷烧结体 |
| CN106747527A (zh) * | 2017-03-01 | 2017-05-31 | 武汉科技大学 | 一种钛铝酸钙隔热耐火材料及其制备方法 |
| CN108752018A (zh) * | 2018-05-08 | 2018-11-06 | 武汉科技大学 | 一种钛铝酸钙-钛酸铝复相陶瓷及其制备方法 |
| CN110436914A (zh) * | 2019-07-29 | 2019-11-12 | 武汉科技大学 | 一种高孔隙率六铝酸钙泡沫陶瓷及其制备方法 |
| CN111892409A (zh) * | 2020-07-15 | 2020-11-06 | 武汉科技大学 | 六铝酸钙中空晶须增强铝钙质复相耐火材料及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112759416A (zh) | 2021-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105272275B (zh) | 一种基于镍铁渣的镁橄榄石轻质隔热砖及其制备方法 | |
| CN100560538C (zh) | 一种含ZrO2镁碳砖及其制备方法 | |
| US11680020B2 (en) | Titanium-containing calcium hexaaluminate material and preparation method thereof | |
| CN103864433B (zh) | 水泥回转窑用方镁石-镁铝尖晶石耐火材料及其制备方法 | |
| CN106904982A (zh) | 以钛铁渣为主料的高铝隔热耐火原料及其制备方法 | |
| CN104150895A (zh) | 一种铝镁尖晶石的低温制备方法 | |
| CN101113082A (zh) | 含纳米碳酸钙的铝酸钙水泥及其制备方法 | |
| 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 | |
| CN112279662A (zh) | 一种镁铝尖晶石-堇青石质煅烧锂电池正极材料用匣钵及其制备方法 | |
| CN110436914A (zh) | 一种高孔隙率六铝酸钙泡沫陶瓷及其制备方法 | |
| CN107963898B (zh) | 莫来石结合钛铝酸钙空心球隔热耐火材料及其制备方法 | |
| CN106278315A (zh) | 一种中频感应炉用捣打料及其制备方法 | |
| CN100564315C (zh) | 一种Sialon复合陶瓷材料及其制备方法 | |
| CN107986805A (zh) | 一种基于钛铝酸钙的轻质隔热耐火材料及其制备方法 | |
| CN112759416B (zh) | 一种六铝酸钙/钛酸铝多孔陶瓷及其制备方法 | |
| CN110204323A (zh) | 一种节能型堇青石锆英石复相材料及其制备方法 | |
| CN103351166A (zh) | 六铝酸钙/钙铝黄长石复相隔热保温耐火材料及其制备方法 | |
| CN111423221B (zh) | 用于转底炉工作层的浇注料及其制备方法 | |
| CN109851260B (zh) | 一种含碳铝酸钙水泥及其制备方法 | |
| CN118084363A (zh) | 一种矿粉-碳化钢渣复合矿物掺合料的制备方法及应用 | |
| CN116655360B (zh) | 一种rh精炼炉用复合耐火材料及其制备方法 | |
| CN111892409B (zh) | 六铝酸钙中空晶须增强铝钙质复相耐火材料及其制备方法 | |
| CN102503451B (zh) | 含镁铝尖晶石和二铝酸钙的复合材料及其制备方法 | |
| CN103396105A (zh) | 一种镁橄榄石质轻质骨料及其制备方法 | |
| CN112479729A (zh) | 一种高强碳化硅-氧化物复合材料及其制备方法 |
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 |