JPS5844607B2 - Production method of cordierite composition powder - Google Patents
Production method of cordierite composition powderInfo
- Publication number
- JPS5844607B2 JPS5844607B2 JP55107444A JP10744480A JPS5844607B2 JP S5844607 B2 JPS5844607 B2 JP S5844607B2 JP 55107444 A JP55107444 A JP 55107444A JP 10744480 A JP10744480 A JP 10744480A JP S5844607 B2 JPS5844607 B2 JP S5844607B2
- Authority
- JP
- Japan
- Prior art keywords
- cordierite
- add
- composition powder
- water
- production method
- 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
- 229910052878 cordierite Inorganic materials 0.000 title claims description 28
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 title claims description 28
- 239000000203 mixture Substances 0.000 title claims description 18
- 239000000843 powder Substances 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 5
- 239000001099 ammonium carbonate Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- -1 silicon organic compound Chemical class 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 159000000003 magnesium salts Chemical class 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 8
- 229910052863 mullite Inorganic materials 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910052634 enstatite Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007603 infrared drying Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- BBCCCLINBSELLX-UHFFFAOYSA-N magnesium;dihydroxy(oxo)silane Chemical compound [Mg+2].O[Si](O)=O BBCCCLINBSELLX-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000001089 mineralizing effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Description
【発明の詳細な説明】
この発明は所望の割合に均質、超微粉のコーディエライ
ト組成粉末の製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing homogeneous, ultrafine cordierite composition powders in desired proportions.
一般にコーディエライト
（２ＭｇＯ・２Ａ１２０３・５Ｓ１０２）は広い温度範
囲に亘って、大変低い熱膨張を示すものであり、急激な
温度変化を与えた時の熱衝撃に対し優れた抵抗性を有す
る。In general, cordierite (2MgO.2A1203.5S102) exhibits very low thermal expansion over a wide temperature range, and has excellent resistance to thermal shock when subjected to sudden temperature changes.
このため、コーディエライトは耐熱性の熱板、自動車排
気ガス浄化用−・ニカム状構造物、理化学用耐熱材料等
として広範に使用されている。For this reason, cordierite is widely used as heat-resistant hot plates, nicam-like structures for purifying automobile exhaust gas, and heat-resistant materials for physical and chemical applications.
一般にコーディエライトはカオリン、滑石、マグネサイ
ト、酸化アルミニウム、水酸化マグネシウム、粘土等を
組合わせて焼成することにより得られる。Generally, cordierite is obtained by firing a combination of kaolin, talc, magnesite, aluminum oxide, magnesium hydroxide, clay, etc.
理論的にはＭｇ０１３．７％、Ａｌ２０３３４．９％、
５ｉｎ２５１．４％であるが一般にはＭｇ０１０〜１６
％、Ａｌ２０３３３〜４１％、５ｉＯ２４３〜５６％の
範囲が用いられる。Theoretically, Mg013.7%, Al20334.9%,
5in251.4%, but generally Mg010~16
%, Al2033-41%, 5iO243-56% are used.
しかし最近では天然原料よりも人工原料を用いコーディ
エライトが合成されるようになった。However, recently, cordierite has been synthesized using artificial raw materials rather than natural raw materials.
そして不純物、特に酸化カルシウム、アルカリがあると
熱膨張係数が大きくなり、熱衝撃抵抗に悪影響があるこ
とが確認されている。It has been confirmed that the presence of impurities, especially calcium oxide and alkali, increases the thermal expansion coefficient and adversely affects thermal shock resistance.
高純度原料を用い、しかもコーディエライトの理論組成
にすることによって最小の熱膨張係数と高い熱衝撃抵抗
をもつが、しかし低温度の液相形成が行われないため、
焼成温度の上昇と狭い焼成範囲となり、焼結が困難とな
り、しかも特性も一定しなくなる。By using high-purity raw materials and having the theoretical composition of cordierite, it has the lowest coefficient of thermal expansion and high thermal shock resistance, but because low-temperature liquid phase formation does not occur,
The sintering temperature increases and the sintering range narrows, making sintering difficult and making the properties inconsistent.
本発明により所望の割合い、例えば最も小さい熱膨張を
示すコーディエライトの理論組成の完全均一混合微粉末
が正確に得られる。According to the present invention, it is possible to accurately obtain a completely homogeneous mixed fine powder having a desired proportion, for example, a theoretical composition of cordierite exhibiting the smallest thermal expansion.
その最も特徴とするところは、コーディエライトの重要
成分であるシリカとマグネシアの調整方法である。Its most distinctive feature is the method for adjusting silica and magnesia, which are important components of cordierite.
シリコンは水溶性の塩類がなく、従ってシリコンの有機
化合物を用いるのであるが、この場合、ＭｇイオンとＡ
Ｉイオンの単なる混合水溶液に加えるのではなくて、こ
のものに有機溶剤が加えられた非水溶液に加える。Silicon has no water-soluble salts, so an organic compound of silicon is used, but in this case, Mg ions and A
Rather than adding it to a mere mixed aqueous solution of I ions, it is added to a non-aqueous solution to which an organic solvent has been added.
このことはシリコンの有機化合物（例えばエチルシリケ
ート）はＭｇ ２ ＋、Ａ１３＋ の単なる水溶液より
も有機溶剤の混合された非水溶液の方に均一に溶は込む
ためである。This is because the organic compound of silicon (for example, ethyl silicate) dissolves more uniformly in a non-aqueous solution containing an organic solvent than in a simple aqueous solution of Mg 2 + and A13+.
従って各成分が均一に溶けた溶液に酸を加えると均一に
分散した状態のシリカゾルが析出してくる。Therefore, when an acid is added to a solution in which each component is uniformly dissolved, a uniformly dispersed silica sol is precipitated.
また有機溶剤が存在するとマグネシウム、アルミニウム
分の沈澱の生成を容易にする。Further, the presence of an organic solvent facilitates the formation of precipitates of magnesium and aluminum.
水溶性の有機溶剤として、メタノール、エタノール、プ
ロパツール、アセトン、エチレングリコール等カ用いら
れる。Examples of water-soluble organic solvents used include methanol, ethanol, propatool, acetone, and ethylene glycol.
またアンモニアアルカリ性の炭酸アンモニウムを加えて
沈殿をつくるのは、通常の炭酸アンモニウムの水溶液で
は濃度が不充分なため炭酸アンモニウムをアンモニア水
で溶解したものを用いる。In order to form a precipitate by adding ammonia alkaline ammonium carbonate, a solution of ammonium carbonate dissolved in aqueous ammonia is used since the concentration of a normal aqueous solution of ammonium carbonate is insufficient.
実施例の６ Ｎ （ＮＴ（４） ２ ＣＯ３はアンモ
ニアアルカリ性の炭酸アンモニウムであり、このものが
加えられるとマグネシウム分の溶解度が小さくなり、は
ぼ完全に沈殿するからである。This is because 6 N (NT(4) 2 CO3 in Example) is ammonia alkaline ammonium carbonate, and when this is added, the solubility of the magnesium component decreases and almost completely precipitates.
過去において高純度のコーディエライトを製造するため
の試みとして、例えばコーディエライトの溶融製造法等
があるが一般的ではない。In the past, attempts have been made to produce high-purity cordierite, such as a method for producing cordierite by melting, but this is not common.
また高純度のＭｇＯ，Ａｌ２Ｏ３、ＳｉＯ２の組合わせ
２Ｍｇ０＋２Ａ１２０３ ：５Ｓｉ０２．２Ｍｇ０＋５
Ｓｉ０２： ２Ａ１２０３．２Ａ１２０３＋５ＳｉＯ２
：２Ｍｇ０１２Ｍｇ０ ＋ ２ ＡＩ ２０３ ＋ ５
Ｓ ｉ０２の組合わせにおいて、一般に鉱化剤（例え
ばＬｉＦ、Ｍｇ Ｆ ２ ）がない場合２Ｍｇ０＋２Ａ
１２０３：５Ｓｉ０２の組合わせであるスピネルとシリ
カの場合、最も合成が困難とされている。Also, a combination of high purity MgO, Al2O3, and SiO2 2Mg0+2A1203:5Si02.2Mg0+5
Si02: 2A1203.2A1203+5SiO2
:2Mg012Mg0 + 2 AI 203 + 5
In the combination of Si02, generally 2Mg0+2A in the absence of mineralizers (e.g. LiF, MgF2)
The combination of 1203:5Si02, spinel and silica, is said to be the most difficult to synthesize.
鉱化剤があると最も良い合成が示されるが、現今フッ素
は公害となり、またリチウムはアルカリであるため、電
気的性能と耐火性とを劣化させる等の欠点をもっている
。The best synthesis is achieved when a mineralizing agent is present, but currently fluorine is a pollutant, and lithium is an alkali, so it has drawbacks such as deterioration of electrical performance and fire resistance.
本法で調整されたコーディエライト組成物は均一な極く
微細活性粉末であるため、合成のための加熱過程で容易
にコープイライト化し、理論組成の場合はＸ線分析にお
いてはコープイライトのみが同定される。Since the cordierite composition prepared by this method is a uniform, extremely fine active powder, it is easily converted into copillite during the heating process for synthesis, and in the case of the theoretical composition, only copeillite is found in X-ray analysis. Identified.
またコープイライトとムライトを共存させたい場合、あ
らかじめ希望の調合にすれば、所望のコーディエライト
とムライトの混合物が得られる。Further, when it is desired that cordierite and mullite coexist, a desired mixture of cordierite and mullite can be obtained by preparing the desired mixture in advance.
天然原料や一般の化学用粉末からの理論組成では、コー
ディエライトの合成過程の焼成において、種々の鉱物、
例えばエンスタタイト、ムライト、γアルミナ等がＸ線
的に現われ、これらが消失すると同時にコーディエライ
ト化する。In the theoretical composition from natural raw materials and general chemical powders, various minerals,
For example, enstatite, mullite, gamma alumina, etc. appear in X-rays, and as soon as these disappear, they turn into cordierite.
そしてまた容易にムライト化しようとする。And it also tries to be easily converted into mullite.
従ってコーディエライト化の調整が非常に困難である。Therefore, it is very difficult to adjust the cordierite formation.
これに反し本法においては合成過程でスピネルが生成し
、これがコーディエライト化する。On the other hand, in this method, spinel is generated during the synthesis process, and this turns into cordierite.
従って合成過程において耐熱性があり、成形体の形状が
よく保持され、コーディエライトの合成も容易である。Therefore, it has heat resistance during the synthesis process, the shape of the molded body is well maintained, and cordierite can be synthesized easily.
また天然原料を使用した時のような配向性を示さないこ
と、必要であれば微量成分が簡単に均一に添加できる特
徴がある。In addition, it does not show the orientation that occurs when natural raw materials are used, and if necessary, trace components can be added easily and uniformly.
次に本発明の詳細な説明する。Next, the present invention will be explained in detail.
実施例 ｌ
高純度試薬のＭｇＣｌ２・６Ｈ２０、
ＡｌＣｌ ・６Ｈ２０およびエチルシリケート４０（
有効シリカ分４０％）を使用し、コーディエライトの理
論値２Ｍｇ０・２Ａ■２０３・５ＳｉＯ２の組成でＩｏ
Ｏｙになるよう、まずＭｇＣｌ３・６ Ｈ，２０とＡｌ
Ｃｌ３・６Ｈ２０を水５００ＣＣ中に溶解し、次にエタ
ノール５００ＣＣを加え、さらにエチルシリケー）４０
を加え、攪拌する。Example l High purity reagents MgCl2.6H20, AlCl.6H20 and ethyl silicate 40 (
The effective silica content is 40%), and the theoretical value of cordierite is 2Mg0.2A■203.5SiO2.
First, MgCl3.6H,20 and Al
Dissolve Cl3.6H20 in 500 cc of water, then add 500 cc of ethanol, and then dissolve 40 ml of ethyl silica.
Add and stir.
次に濃塩酸４０ｃｃを酸性触媒として加えて攪拌した後
、６Ｎ−（ＮＨ４）２ＣＯ３２００ＣＣを加えて再び攪
拌後、遠心分離し、赤外線乾燥し、コープイライト調合
粉末をえた。Next, 40 cc of concentrated hydrochloric acid was added as an acidic catalyst and stirred, and then 200 cc of 6N-(NH4)2CO3 was added and stirred again, followed by centrifugation and infrared drying to obtain a copierite blend powder.
このものは化学分析により、コーディエライトの理論組
成にほとんど近いＭｇ０１３．５％、Ａ１２０３３５．
１％、５ｉｎ２５２．４％を示し、１４００℃、ｌｈｒ
焼成によってＸ線的に完全にコーディエライト化した。Chemical analysis revealed that this material had a composition of Mg013.5%, A120335. which is almost the theoretical composition of cordierite.
1%, 5in252.4%, 1400℃, lhr
By firing, it was completely converted into cordierite by X-ray.
比較のため、単に３種の溶液調合からの
（ＮＨ４）２Ｃ０３による沈殿物はＭｇ０ １１．、７
％、Ａｌ２０３３６．４％、５ｉ０２５１．９％であり
、１３００℃でコーディエライト、ムライト、スピネル
の回折線を認め、１４００℃でコーディエライト、ムラ
イトとなった。For comparison, the precipitation with (NH4)2C03 from just three solution formulations is Mg0 11. ,7
%, Al20336.4%, and 5i0251.9%, and the diffraction lines of cordierite, mullite, and spinel were observed at 1300°C, and they became cordierite and mullite at 1400°C.
実施例 ２
実施例１と同じ原料を用い、ＭｇＯ１１，０％、Ａｌ２
０３４５．０％、５ｉ０２４４．０％の組成で１００１
になるよう、実施例１と同様にしてコーディエライト粉
末を得た。Example 2 Using the same raw materials as Example 1, MgO 11.0%, Al2
1001 with a composition of 0345.0% and 5i0244.0%
Cordierite powder was obtained in the same manner as in Example 1.
このものは化学分析の結果Ｍｇ０１０．７％、Ａ１２０
３４５．１％、５ｉ０２４４．２％を示し、１４００℃
、１ ｈｒ 焼成によってＸ線的にコーディエライトと
少量のムライトが同定された。As a result of chemical analysis, this product has Mg010.7%, A120
345.1%, 5i0244.2%, 1400℃
After firing for 1 hour, cordierite and a small amount of mullite were identified by X-rays.
比較のため単に３種の溶液調合からの
（ＮＨ４）２ＣＯ３による沈殿物はＭｇ０ ９．５％、
Ａ１２０３４７．２％、５ｉｎ２４３．３％であり、１
４００℃でコーディエライト、ムライトになったがＸ線
の回折線強度は前者より低かった。For comparison, the precipitation with (NH4)2CO3 from just three solution formulations was 9.5% Mg0,
A120347.2%, 5in243.3%, 1
At 400°C, it became cordierite and mullite, but the X-ray diffraction line intensity was lower than the former.
Claims (1)
マグネシウム塩類と水溶性アルミニウム塩類とを溶解し
た水溶液に、水溶性の有機溶剤を加え攪拌後、シリコン
有機化合物を添加、再度攪拌した後、酸を加えて混合、
次いでアンモニアアルカリ性の炭酸アンモニウム液を加
えて沈殿をつくり、この沈殿を分離、乾燥することを特
徴とするコーディエライト組成粉末の製造法。1. To obtain the composition of cordierite, first add a water-soluble organic solvent to an aqueous solution in which water-soluble magnesium salts and water-soluble aluminum salts are dissolved and stir, then add a silicon organic compound, stir again, and add acid. Add and mix,
A method for producing a cordierite composition powder, which comprises then adding an ammonia-alkaline ammonium carbonate solution to form a precipitate, and separating and drying the precipitate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55107444A JPS5844607B2 (en) | 1980-08-05 | 1980-08-05 | Production method of cordierite composition powder |
| US06/288,022 US4367292A (en) | 1980-08-05 | 1981-07-29 | Method for manufacture of powder composition for cordierite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55107444A JPS5844607B2 (en) | 1980-08-05 | 1980-08-05 | Production method of cordierite composition powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5734014A JPS5734014A (en) | 1982-02-24 |
| JPS5844607B2 true JPS5844607B2 (en) | 1983-10-04 |
Family
ID=14459298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55107444A Expired JPS5844607B2 (en) | 1980-08-05 | 1980-08-05 | Production method of cordierite composition powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5844607B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173025U (en) * | 1985-04-15 | 1986-10-28 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108752011B (en) * | 2018-05-30 | 2021-05-18 | 安徽理工大学 | A kind of method for synthesizing cordierite powder at low temperature with anhydrous magnesium chloride as molten salt base |
| CN111303709B (en) * | 2020-03-09 | 2021-08-27 | 中国人民解放军国防科技大学 | Radiation refrigeration coating and preparation method and application thereof |
-
1980
- 1980-08-05 JP JP55107444A patent/JPS5844607B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173025U (en) * | 1985-04-15 | 1986-10-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5734014A (en) | 1982-02-24 |
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