JPS6350302B2 - - Google Patents
Info
- Publication number
- JPS6350302B2 JPS6350302B2 JP58238092A JP23809283A JPS6350302B2 JP S6350302 B2 JPS6350302 B2 JP S6350302B2 JP 58238092 A JP58238092 A JP 58238092A JP 23809283 A JP23809283 A JP 23809283A JP S6350302 B2 JPS6350302 B2 JP S6350302B2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- strength
- binder
- basic aluminum
- parts
- 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.)
- Expired
Links
- VXYADVIJALMOEQ-UHFFFAOYSA-K tris(lactato)aluminium Chemical compound CC(O)C(=O)O[Al](OC(=O)C(C)O)OC(=O)C(C)O VXYADVIJALMOEQ-UHFFFAOYSA-K 0.000 claims description 22
- 239000011230 binding agent Substances 0.000 claims description 21
- 239000001099 ammonium carbonate Substances 0.000 claims description 16
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 15
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 13
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 5
- 150000008041 alkali metal carbonates Chemical class 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 24
- 239000000047 product Substances 0.000 description 20
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 16
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 15
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 9
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 239000004310 lactic acid Substances 0.000 description 8
- 235000014655 lactic acid Nutrition 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000003623 enhancer Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 210000002808 connective tissue Anatomy 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 235000011181 potassium carbonates Nutrition 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 235000011124 aluminium ammonium sulphate Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000011126 aluminium potassium sulphate Nutrition 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229940009827 aluminum acetate Drugs 0.000 description 1
- VQAXQOWRGIWJSX-UHFFFAOYSA-J aluminum potassium 2,3-dihydroxybutanedioate Chemical compound [Al+3].[K+].OC(C(O)C([O-])=O)C([O-])=O.OC(C(O)C([O-])=O)C([O-])=O VQAXQOWRGIWJSX-UHFFFAOYSA-J 0.000 description 1
- -1 aluminum sulfate Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- LCQXXBOSCBRNNT-UHFFFAOYSA-K ammonium aluminium sulfate Chemical compound [NH4+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O LCQXXBOSCBRNNT-UHFFFAOYSA-K 0.000 description 1
- PRKQVKDSMLBJBJ-UHFFFAOYSA-N ammonium carbonate Chemical class N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 description 1
- 235000011162 ammonium carbonates Nutrition 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 150000001553 barium compounds Chemical class 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229940050271 potassium alum Drugs 0.000 description 1
- GNHOJBNSNUXZQA-UHFFFAOYSA-J potassium aluminium sulfate dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GNHOJBNSNUXZQA-UHFFFAOYSA-J 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- GJPYYNMJTJNYTO-UHFFFAOYSA-J sodium aluminium sulfate Chemical compound [Na+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GJPYYNMJTJNYTO-UHFFFAOYSA-J 0.000 description 1
- 235000011127 sodium aluminium sulphate Nutrition 0.000 description 1
- 235000011182 sodium carbonates Nutrition 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
本発明は耐火、耐熱性成型体の製造方法に関す
る。
耐火物分野に於ける結合剤は耐火原料に構造体
としての機能をもたせる結合組織を形成させる剤
として、古くから水ガラス、シリカゾル、アルミ
ナゾル、塩基性塩化アルミニウム、アルミナセメ
ント、各種りん酸塩等の結合剤が数多く開発さ
れ、不定形の耐火物や結合組織の改良された耐火
レンガの製造に供されている。
しかし、これらの結合剤において水ガラスはア
ルカリ金属を含有しているために、高温に於ける
結合強度が小さく、シリカゾル、アルミナゾルは
特殊な分野には有効であるものの、一般的には低
高温全領域に亘り結合強度が不足するという欠点
を有する。
また塩基性塩化アルミニウムは、低融点物質を
形成しない優れた結合剤であるが、高温分解時に
塩素ガスを発生し、作業環境上好ましくなく、ア
ルミナセメントは、その硬化性や強度発現性のた
めに多量の使用を必要とするので、その結果成形
物がカルシウムを多含することとなつて、低融点
物質を生成し好ましくない。りん酸塩について云
えば、この結合剤は近年開発された強度的にも優
れた結合剤であるが、例えば取鍋等の炉壁として
使用するときにりん酸成分が溶湯に不純物として
混入する等の問題が顕在している。
即ち、いずれの結合剤にも一長一短があり、被
結合物あるいは用途の厳格な選択を余儀なくさ
れ、あるものは結合剤の安定性、作業性等にもか
なりの考慮を払わねばならない。
またギ酸、シユウ酸、クエン酸等の有機酸のア
ルミニウム塩の単味、あるいは他の結合剤との併
用も試みられているが、酸性が強く被結合物との
反応が激しかつたり、充分な結合強度が得られな
いことからその適用分野を限定されている。
かかる現状に鑑み、本発明者らは研究を重ね、
塩基性乳酸アルミニウム塩が優れた結合強度を発
現することを見い出したが、(特公昭61―16745
号)更に進んで検討を行つた結果、アルミニウム
塩とアルカリ金属の炭酸塩、またはアンモニウム
の炭酸塩とを反応させて得た乾燥物と塩基性乳酸
アルミニウム塩とを、結合剤として使用すること
により、結合強度が一段と向上した成型体を得る
ことが可能なることを発見し、かかる知見にもと
ずき本発明を完成したものである。
本発明に於ける塩基性乳酸アルミニウム塩と
は、Al2O3/乳酸(モル比)0.2〜2.0の組成を有
するものである。
尚、その製法については特公昭61―16745に記
載の如く水可溶性アルミニウム塩とアルカリ金属
あるいはアンモニウムの炭酸塩、重炭酸塩等を反
応させ、またはアルミン酸アルカリと炭酸ガスと
を反応させ生成沈澱するアルミナ水和物を乳酸に
溶解することにより製造することができる。また
上記炭酸塩に代えて水酸化アンモニウム、水酸化
ナトリウムを使用することもできる。
更にまた、硫酸アルミニウムと乳酸または乳酸
アルミニウムの混合溶液にカルシウム化合物バリ
ウム化合物等の水不溶性硫酸塩を形成する化合物
を添加することによつても製造することができ
る。
本発明に於ては、かかる組成の塩基性乳酸アル
ミニウム塩溶液を乾燥し、粉末として使用する。
すなわち、本発明は、アルミニウム塩とアルカ
リ金属の炭酸塩、またはアンモニウムの炭酸塩と
を反応させて得た乾燥物と塩基性乳酸アルミニウ
ム塩とを結合剤として使用することからなる成型
体の製造方法に関し、本発明の目的は、従来の塩
基性乳酸アルミニウム塩単味の使用に比べて、経
時安定性に優れ、且つ結合強度が一段と向上した
成型体を提供することにある。
即ち、アルミニウム塩とアルカリ金属の炭酸
塩、またはアンモニウムの炭酸塩とを反応させて
得た乾燥物と塩基性乳酸アルミニウム塩とを結合
剤として使用する場合、常温ではこれらは反応が
著しく遅く、増粘することなく作業でき、すぐれ
た成型体を得ることができる。更に、乾燥または
200〜300℃の低温熱処理中にこれらが反応し、す
ぐれた結合力を発揮する。
本発明に使用するアルミニウム塩としては、硫
酸アルミニウム、塩基性硫酸アルミニウム、塩化
アルミニウム、塩基性塩化アルミニウム、硝酸ア
ルミニウム、塩基性硝酸アルミニウム、アンモニ
ウム明バン、カリ明バン、ソーダ明バン等の無機
のアルミニウム塩、酢酸アルミニウム、酒石酸カ
リアルミニウム等の有機のアルミニウム塩を例示
できる。
また、アルカリ金属の炭酸塩としては、ナトリ
ウム、カリウムの炭酸塩、重炭酸塩、アンモニウ
ムの炭酸塩としては炭酸アンモニウム、重炭酸ア
ンモニウムを例示できるが、いずれもこれらに限
定されるものではない。
そこで1例として本発明の強度増強剤の製造方
法に関し、アルミニウム塩として、硫酸アルミニ
ウムを、また炭酸塩として重炭酸アンモニウムを
例にとり説明すれば、先ず硫酸アルミニウム溶液
を用意する。硫酸アルミニウムの濃度としては溶
解する範囲内であれば、別段制約はない。他方、
これと反応させる重炭酸アンモニウム水溶液の濃
度も、溶解する範囲内であれば、別段制約はな
い。しかして、硫酸アルミニウムと重炭酸アンモ
ニウムの反応量的割合について云えば、沈降物が
生成する領域であればよいが、一般的には
NH4/Al2O3(モル比)4.0以上であり、また上限
については臨界的意義はないが、NH4/Al2O3
(モル比)として10以下が強度附与の関係から望
ましい。即ち10を著しく超えると値が大きくなる
に従つて、強度附与効果は減少する。さて、上記
の如くして調製した硫酸アルミニウム水溶液と重
炭酸アンモニウム水溶液は、任意の方法で混合さ
れる。
混合に際しては、前者に後者を添加しても、あ
るいはその逆順でもよく、また添加方法は間欠的
であつても連続的であつてもよいが、最適の方法
は、アルミニウム塩水溶液に重炭酸アンモニウム
水溶液を一度に添加して、急激な撹拌を行う方法
であり、かかる方法により過性のよい均質な生
成物が得られる。次に反応温度に関して云えば、
重炭酸アンモニウムの分解温度以下であればよ
く、反応温度による強度附与効果への影響はほと
んど見られないが、反応温度が低い程過分離性
は良好となる。
尚、上記液一液反応のほか、アルミニウム塩溶
液にアンモニアと炭酸ガスを同時に吹き込んでも
本発明強度増強剤を製造することができる。
また、沈澱物を乾燥する場合に於て、これをそ
のまま放置することにより、あるいは強制加熱に
より乾燥することは勿論可能であるが、一般的
に、沈澱物を母液と分離することなくスラリー状
態で噴霧乾燥することが使用の容易性及び品質上
の点から好ましい。乾燥温度は200℃以下が良い。
これ以上になると強度附与性能が激減する。
次いで塩基性乳酸アルミニウム塩について云え
ば、これを粉末で使用するが、粉末で使用する理
由は、溶液を使用すると本発明強度増強剤との反
応により、塩基性乳酸アルミニウム塩の組成が変
化し、結合剤としての結合強度が低下することに
より望ましくない。
また塩基性乳酸アルミニウム塩の紛末と本発明
強度増強剤とを予め混合する理由は、骨材との混
合時に別々に混合すると結合剤が充分に分散され
ず不均一な状態となることより、延いては結合剤
の強度の低下に影響を及ぼすことによる。
続いて本発明強度増強剤の使用量に関して云え
ば、使用する塩基性乳酸アルミニウム塩の塩基
度、物質の種類、被結合物の種類、用途等により
異なるが、大略塩基性乳酸アルミニウム塩の
Al2O3に対して0.5〜7.5重量倍が望ましい。
即ち、下限以下では塩基性乳酸アルミニウム
塩、単味に比べて大きな強度改善効果を期待する
ことができず、上限を越えて添加してもそれ以上
の添加量効果が期待できず、場合によると逆に強
度低下を示したり、耐用性を低下したりする。
本発明成型体製造用結合剤の使用態様として
は、結合剤と骨材、充填剤等とを予じめ混合した
後少量の水あるいは有機溶剤及び必要に応じ、焼
成マグ、電融マグ、水ガラス、水酸化カルシウ
ム、炭酸カルシウム、水酸化カリウム、炭酸カリ
ウム、アルミン酸ナトリウム等の硬化剤を添加混
合し使用することもできるし、本発明の結合剤と
水とを混合した後被接着物に塗布し、乾燥、加熱
して接着剤として利用することもできる。
また、本発明成型体製造用結合剤の用途として
は耐火物用結合剤としては勿論のこと、各種板状
物、例えば、スレート板、石こう板、ケイカル
板、あるいは各種バーライト、バーミキユライ
ト、ゼオライト等各種骨材の結合剤、アスベス
ト、ロツクウール、ガラス繊維、アルミノシリケ
ート繊維、炭素繊維等天然、人工の各種繊維、ア
ルミナ、シリカ等各種触媒、鉄板、セラミツク材
料等のコーテイング材にも使用でき、必要に応じ
て、マグネシア、ドロマイト、クロム酸、アルミ
ナ水和物、塩基性硫酸アルミニウム、水ガラス、
アルミン酸ナトリウム等の硬化剤を併用してもよ
く、アルミナ、石綿、雲母、ベンガラ、タルク、
ジルコンフラワー、硫酸バリウム、酸化チタン、
スピネル等の充填剤を併用してもよい。
以下に本発明の実施例を挙げて更に説明する
が、本発明はこれに限定されるものではない。
尚、%は特にことわらない限り全て重量%を示
す。
実施例 1
硫酸アルミニウム溶液(Al2O34.0%)の4Kgと
重炭酸ナトリウム溶液(Na1.8%)の12Kgを水2
Kgを入れた反応槽に同時に添加しながら約1時間
で全量を加えた。生成物を過し、過ケーキの
10倍量の水で洗浄後、噴霧乾燥を行なつた。この
乾燥物の分析値を第1表に示した。
The present invention relates to a method for manufacturing a fire-resistant and heat-resistant molded body. Binders in the refractory field have long been used as agents to form connective tissue that gives refractory raw materials a structural function, such as water glass, silica sol, alumina sol, basic aluminum chloride, alumina cement, and various phosphates. A number of binders have been developed and used to manufacture irregularly shaped refractories and refractory bricks with improved connective tissue. However, because water glass contains alkali metals in these binders, its bonding strength at high temperatures is low, and although silica sol and alumina sol are effective in special fields, they are generally not suitable for low-temperature and total bonding. It has the disadvantage that the bonding strength is insufficient over the area. Basic aluminum chloride is an excellent binder that does not form low-melting substances, but it generates chlorine gas during high-temperature decomposition, making it unfavorable for the working environment. Since it is necessary to use a large amount, the resulting molded product contains a large amount of calcium, which is undesirable because it produces a low melting point substance. Regarding phosphates, this binder has been developed in recent years and has excellent strength, but for example, when used as a furnace wall for ladle etc., phosphoric acid component may be mixed into the molten metal as an impurity. The problem has become apparent. That is, each binder has its advantages and disadvantages, and it is necessary to strictly select the materials to be bound or the intended use, and in some cases, considerable consideration must be given to the stability, workability, etc. of the binder. In addition, attempts have been made to use aluminum salts of organic acids such as formic acid, oxalic acid, and citric acid alone or in combination with other binders, but they are highly acidic and react violently with the substances to be bound. The field of application is limited due to the inability to obtain sufficient bonding strength. In view of this current situation, the present inventors have conducted repeated research,
It was discovered that basic aluminum lactate salt exhibits excellent bond strength.
As a result of further investigation, we found that by using a dry product obtained by reacting an aluminum salt with an alkali metal carbonate or an ammonium carbonate and a basic aluminum lactate salt as a binder, The inventors discovered that it was possible to obtain a molded body with a further improved bonding strength, and based on this knowledge, they completed the present invention. The basic aluminum lactate salt in the present invention has a composition of Al 2 O 3 /lactic acid (molar ratio) of 0.2 to 2.0. As for its production method, as described in Japanese Patent Publication No. 61-16745, it is produced and precipitated by reacting a water-soluble aluminum salt with an alkali metal or ammonium carbonate, bicarbonate, etc., or by reacting an alkali aluminate with carbon dioxide gas. It can be produced by dissolving alumina hydrate in lactic acid. Moreover, ammonium hydroxide or sodium hydroxide can also be used in place of the above carbonate. Furthermore, it can also be produced by adding a compound that forms a water-insoluble sulfate, such as a calcium compound or barium compound, to a mixed solution of aluminum sulfate and lactic acid or aluminum lactate. In the present invention, a basic aluminum lactate salt solution having such a composition is dried and used as a powder. That is, the present invention provides a method for producing a molded body, which comprises using a dried product obtained by reacting an aluminum salt with an alkali metal carbonate or an ammonium carbonate and a basic aluminum lactate salt as a binder. Regarding this, an object of the present invention is to provide a molded product which has excellent stability over time and further improved bonding strength compared to the conventional use of a basic aluminum lactate salt alone. That is, when using a dried product obtained by reacting an aluminum salt with an alkali metal carbonate or an ammonium carbonate and a basic aluminum lactate salt as a binder, the reaction is extremely slow at room temperature, and the increase is slow. You can work without stickiness and can obtain excellent molded objects. Additionally, dry or
These react during low-temperature heat treatment at 200-300°C and exhibit excellent bonding strength. Examples of the aluminum salt used in the present invention include inorganic aluminum salts such as aluminum sulfate, basic aluminum sulfate, aluminum chloride, basic aluminum chloride, aluminum nitrate, basic aluminum nitrate, ammonium alum, potassium alum, and soda alum. Examples include organic aluminum salts such as aluminum acetate and potassium aluminum tartrate. Examples of alkali metal carbonates include sodium and potassium carbonates and bicarbonates, and ammonium carbonates include ammonium carbonate and ammonium bicarbonate, but the invention is not limited to these. Therefore, as an example, the method for producing the strength enhancer of the present invention will be explained using aluminum sulfate as the aluminum salt and ammonium bicarbonate as the carbonate. First, an aluminum sulfate solution is prepared. There are no particular restrictions on the concentration of aluminum sulfate as long as it is within a range in which it can be dissolved. On the other hand,
There are no particular restrictions on the concentration of the aqueous ammonium bicarbonate solution to be reacted with this as long as it is within the range of dissolution. Regarding the reaction quantitative ratio of aluminum sulfate and ammonium bicarbonate, it is sufficient as long as a precipitate is formed, but in general,
NH 4 /Al 2 O 3 (molar ratio) is 4.0 or more, and the upper limit has no critical significance, but NH 4 /Al 2 O 3
(molar ratio) of 10 or less is desirable from the perspective of imparting strength. That is, as the value significantly exceeds 10, the strength imparting effect decreases as the value increases. Now, the aluminum sulfate aqueous solution and the ammonium bicarbonate aqueous solution prepared as described above are mixed by any method. When mixing, the latter may be added to the former or vice versa, and the addition method may be intermittent or continuous, but the most suitable method is to add ammonium bicarbonate to the aluminum salt aqueous solution. This is a method in which an aqueous solution is added all at once and stirred rapidly, and a homogeneous product with good permeability can be obtained by this method. Next, regarding the reaction temperature,
It only needs to be below the decomposition temperature of ammonium bicarbonate, and the reaction temperature has almost no influence on the effect of imparting strength, but the lower the reaction temperature, the better the overseparability becomes. In addition to the above-mentioned one-liquid reaction, the strength enhancer of the present invention can also be produced by simultaneously blowing ammonia and carbon dioxide into the aluminum salt solution. In addition, when drying the precipitate, it is of course possible to dry it by leaving it as it is or by forced heating, but generally the precipitate can be dried in a slurry state without separating it from the mother liquor. Spray drying is preferred from the viewpoint of ease of use and quality. The drying temperature is preferably below 200℃.
If it exceeds this, the strength imparting performance will be drastically reduced. Next, regarding the basic aluminum lactate salt, it is used in powder form.The reason for using it in powder form is that when a solution is used, the composition of the basic aluminum lactate salt changes due to the reaction with the strength enhancer of the present invention. This is undesirable as it reduces the bonding strength as a binder. Further, the reason why the powder of basic aluminum lactate salt and the strength enhancer of the present invention are mixed in advance is that if they are mixed separately at the time of mixing with the aggregate, the binder will not be sufficiently dispersed and will be in a non-uniform state. This in turn affects the strength reduction of the binder. Next, regarding the amount of the strength enhancer of the present invention to be used, it varies depending on the basicity of the basic aluminum lactate salt used, the type of substance, the type of substance to be bound, the use, etc., but approximately the amount of the basic aluminum lactate salt used is
It is desirable to use 0.5 to 7.5 times the weight of Al 2 O 3 . That is, if the basic aluminum lactate salt is added below the lower limit, it cannot be expected to have a large strength improvement effect compared to plain aluminum salt, and even if it is added above the upper limit, no further effect can be expected, depending on the case. On the contrary, it shows a decrease in strength and durability. The method of using the binder for producing molded bodies of the present invention is to mix the binder with aggregates, fillers, etc. in advance, and then add a small amount of water or an organic solvent and, if necessary, a fired mug, an electric melted mug, or water. It is also possible to use glass, calcium hydroxide, calcium carbonate, potassium hydroxide, potassium carbonate, sodium aluminate, and other hardening agents. It can also be used as an adhesive by coating, drying, and heating. In addition, the binder for producing molded bodies of the present invention can be used not only as a binder for refractories, but also for various plate-like materials, such as slate boards, gypsum boards, silica boards, various barlites, vermiculites, etc. It can also be used as a binder for various aggregates such as zeolite, various natural and artificial fibers such as asbestos, rock wool, glass fiber, aluminosilicate fiber, and carbon fiber, various catalysts such as alumina and silica, and coating materials for iron plates, ceramic materials, etc. If necessary, magnesia, dolomite, chromic acid, alumina hydrate, basic aluminum sulfate, water glass,
A curing agent such as sodium aluminate may be used in combination with alumina, asbestos, mica, red iron, talc,
Zircon flower, barium sulfate, titanium oxide,
A filler such as spinel may be used in combination. The present invention will be further explained below with reference to Examples, but the present invention is not limited thereto. It should be noted that all percentages are by weight unless otherwise specified. Example 1 4 kg of aluminum sulfate solution (Al 2 O 3 4.0%) and 12 kg of sodium bicarbonate solution (Na 1.8%) were added to 2 kg of water.
The entire amount was added in about 1 hour while simultaneously adding to the reaction tank containing Kg. Strain the product and filter the cake.
After washing with 10 times the amount of water, spray drying was performed. The analytical values of this dried product are shown in Table 1.
【表】
この乾燥物100部と塩基性乳酸アルミニウム塩
粉末(Al2O3/乳酸のモル比0.6、Al2O332.5%)
の200部をボールミルに入れ、8時間粉砕混合し
た。混合物9部と第2表に示す塩基性骨材300部
と水18部を加えて混練し、20×20×80mmの金型に
流しこみ、24時間後脱型した。
また比較のために前記組成の塩基性乳酸アルミ
ニウム塩粉末9部と第2表の塩基性骨材300部と
水17部を加えて混練し、同様に成型し24時間後脱
型した。これらの供試体を110℃で24時間乾燥後、
曲げ強度を測定し、また1000℃で2時間焼成後の
冷間曲げ強度を測定した。結果を第3表に示し
た。[Table] 100 parts of this dry product and basic aluminum lactate salt powder (Al 2 O 3 /lactic acid molar ratio 0.6, Al 2 O 3 32.5%)
200 parts of the mixture were placed in a ball mill and pulverized and mixed for 8 hours. 9 parts of the mixture, 300 parts of the basic aggregate shown in Table 2, and 18 parts of water were added and kneaded, poured into a mold of 20 x 20 x 80 mm, and demolded after 24 hours. For comparison, 9 parts of the basic aluminum lactate powder of the above composition, 300 parts of the basic aggregate shown in Table 2, and 17 parts of water were added and kneaded, molded in the same manner, and demolded after 24 hours. After drying these specimens at 110℃ for 24 hours,
The bending strength was measured, and the cold bending strength after firing at 1000°C for 2 hours was also measured. The results are shown in Table 3.
【表】【table】
【表】
実施例 2
液温21℃の塩基性塩化アルミニウム(Cl/Al
モル比0.75、Al2O320.0%)500gに液温20℃の重
炭酸アンモニウム溶液(NH31.8%)4Kgを激し
く撹拌しながら約8分で添加し、続いて8分間熟
成した後、噴霧乾燥し、乾燥物を得た。次に塩基
性乳酸アルミニウム塩粉末(Al2O3/乳酸のモル
比0.4、Al2O327.0%)と前記乾燥物を第4表の配
合割合になるように採り充分に混合した。これら
の混合物4部を焼成ボーキサイト骨材(粒度構成
2.0〜0.5mm50部、0.5〜0.088mm15部、0.088mm以下
35部)100部と混合し、水6部を加え50mmφ×150
mmの成型用筒に入れ、サンドランマーで3打して
脱型後110℃で24時間乾燥後、圧縮強度を測定し
た。
結果を第4表に示した。[Table] Example 2 Basic aluminum chloride (Cl/Al
4 kg of ammonium bicarbonate solution (NH 3 1.8%) at a liquid temperature of 20°C was added to 500 g (mole ratio 0.75, Al 2 O 3 20.0%) with vigorous stirring for about 8 minutes, and after aging for 8 minutes, spraying was performed. It was dried to obtain a dry product. Next, basic aluminum lactate salt powder (Al 2 O 3 /lactic acid molar ratio 0.4, Al 2 O 3 27.0%) and the dried product were taken and thoroughly mixed in the proportions shown in Table 4. Four parts of these mixtures were added to calcined bauxite aggregate (particle size composition
2.0~0.5mm 50 parts, 0.5~0.088mm 15 parts, 0.088mm or less
35 parts) Mix with 100 parts and add 6 parts of water to 50mmφ×150
The mold was placed in a molding cylinder of 1.5 mm in diameter, and removed from the mold by three strokes with a sand rammer. After drying at 110° C. for 24 hours, the compressive strength was measured. The results are shown in Table 4.
【表】
実施例 3
硫酸アルミニウムと炭酸ナトリウムの仕込量比
4.5(Na/Al2O3モル比)となるように硫酸アルミ
ニウム溶液(Al2O310%)500gをマイクロスピー
ドミキサーに入れ、炭酸ナトリウム溶液(Na2.0
%)2537gを一度に加えた。充分に混合後生成物
を過し、更に洗浄水5200gで洗浄過した。
また別に、仕込量比6(Na/Al2O3モル比)と
なるように、硫酸アルミニウム溶液(Al2O310
%)の500gと炭酸ナトリウム溶液(Na2.0%)の
3382g、更に仕込量比9.5(Na/Al2O3モル比)と
なるように硫酸アルミニウム溶液(Al2O310%)
の500gと炭酸ナトリウム溶液(Na2.0%)の
5355gを前記方法と同様に反応させ、生成物を約
10倍量の水で過洗浄した。
これらの洗浄生成物を気流乾燥機で乾燥した。
実施例1と同様に第2表の塩基性骨材300部に
これらの乾燥物4.5部を加え、更に塩基性乳酸ア
ルミニウム塩粉末(Al2O3/乳酸モル比0.33、
Al2O323.9%)4.5部、水20部を加えてよく混合
し、20×20×80mmの金型で振動成型した。脱型後
110℃で24時間乾燥し、曲げ強度を測定した。結
果を第5表に示した。[Table] Example 3 Charge ratio of aluminum sulfate and sodium carbonate
4.5 (Na/Al 2 O 3 molar ratio), put 500 g of aluminum sulfate solution (Al 2 O 3 10%) in a micro speed mixer, and add sodium carbonate solution (Na2.0
%) 2537g was added at once. After thorough mixing, the product was filtered and further washed with 5200 g of washing water. Separately , aluminum sulfate solution ( Al 2 O 3 10
%) and 500g of sodium carbonate solution (Na2.0%)
3382g, and then add aluminum sulfate solution (Al 2 O 3 10%) to a charging ratio of 9.5 (Na/Al 2 O 3 molar ratio).
of sodium carbonate solution (Na2.0%)
5355g was reacted in the same manner as above, and the product was approximately
Excessive washing was performed with 10 times the amount of water. These washed products were dried in a flash dryer. As in Example 1, 4.5 parts of these dried products were added to 300 parts of the basic aggregate shown in Table 2, and basic aluminum lactate salt powder (Al 2 O 3 /lactic acid molar ratio 0.33,
4.5 parts of Al 2 O 3 (23.9%) and 20 parts of water were added, mixed well, and vibration molded in a mold of 20 x 20 x 80 mm. After demolding
It was dried at 110°C for 24 hours and its bending strength was measured. The results are shown in Table 5.
【表】
実施例 4
重炭酸アンモニウム水溶液(NH31.5%)3000g
に塩化アルミニウム(Cl/Alモル比3、
Al2O311.6%)388gを撹拌をしながら徐々に添加
した。生成物を過洗浄し、乾燥した乾燥物
(Al2O355.2%)の2gを塩基性乳酸アルミニウム塩
粉末(Al2O3/乳酸モル比0.6、Al2O332.5%)の
7gに均一に混合させ、これをアルミナフアイバ
ー成型体用バインダーとして加えた。この生成物
を加えることにより塩基性乳酸アルミニウム塩単
味よりもフアイバー成型体を焼成後のフアイバー
のほぐれが少なくなつた。
実施例 5
実施例1の硫酸アルミニウム水溶液と重炭酸ナ
トリウム水溶液からの反応で得た生成乾燥物と塩
基性乳酸アルミニウム塩紛末(Al2O3/乳酸モル
比0.8、Al2O334.6%)を第6表の様に混合し、合
計のAl2O3量を一定にして、実施例1の如く第2
表の骨材300部に混練し、成型した。
型への流し込みから24時間後に脱型し、生強度
を測定し、また110℃で24時間乾燥後の乾燥強度、
及びこれの1000℃で2時間焼成後の冷間強度を測
定した。結果を第6表に示す。[Table] Example 4 Ammonium bicarbonate aqueous solution (NH 3 1.5%) 3000g
aluminum chloride (Cl/Al molar ratio 3,
388 g of Al 2 O 3 (11.6%) was gradually added with stirring. The product was overwashed and 2 g of the dried product (55.2% Al 2 O 3 ) was mixed with basic aluminum lactate salt powder (Al 2 O 3 /lactic acid molar ratio 0.6, Al 2 O 3 32.5%).
7 g was uniformly mixed and added as a binder for an alumina fiber molded body. Addition of this product resulted in less loosening of the fiber after firing the fiber molded product than when using basic aluminum lactate alone. Example 5 Dry product obtained from the reaction of the aluminum sulfate aqueous solution and sodium bicarbonate aqueous solution in Example 1 and basic aluminum lactate salt powder (Al 2 O 3 /lactic acid molar ratio 0.8, Al 2 O 3 34.6%) were mixed as shown in Table 6, the total amount of Al 2 O 3 was kept constant, and the second
It was mixed with 300 parts of the aggregate shown above and molded. The mold was removed 24 hours after pouring into the mold, and the green strength was measured.The dry strength after drying at 110℃ for 24 hours was measured.
And the cold strength of this was measured after firing at 1000°C for 2 hours. The results are shown in Table 6.
Claims (1)
はアンモニウムの炭酸塩とを反応させて得た乾燥
物と塩基性乳酸アルミニウム塩とを結合剤として
使用することからなる成型体の製造方法。1. A method for producing a molded body, which comprises using a dried product obtained by reacting an aluminum salt with an alkali metal carbonate or an ammonium carbonate and a basic aluminum lactate salt as a binder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58238092A JPS60131857A (en) | 1983-12-16 | 1983-12-16 | Manufacture of molded body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58238092A JPS60131857A (en) | 1983-12-16 | 1983-12-16 | Manufacture of molded body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60131857A JPS60131857A (en) | 1985-07-13 |
JPS6350302B2 true JPS6350302B2 (en) | 1988-10-07 |
Family
ID=17025041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58238092A Granted JPS60131857A (en) | 1983-12-16 | 1983-12-16 | Manufacture of molded body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60131857A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07115954B2 (en) * | 1987-04-22 | 1995-12-13 | 日本特殊炉材株式会社 | Fireproof composition for spraying |
FR2741616B1 (en) * | 1995-11-23 | 2000-03-10 | Sandoz Sa | CEMENT ACCELERATORS |
JP6562866B2 (en) * | 2016-03-31 | 2019-08-21 | 日本碍子株式会社 | Manufacturing method of honeycomb structure |
JP6581032B2 (en) * | 2016-03-31 | 2019-09-25 | 日本碍子株式会社 | Honeycomb structure |
-
1983
- 1983-12-16 JP JP58238092A patent/JPS60131857A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60131857A (en) | 1985-07-13 |
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