JPH02283677A - Porous ceramic formed article - Google Patents
Porous ceramic formed articleInfo
- Publication number
- JPH02283677A JPH02283677A JP10369889A JP10369889A JPH02283677A JP H02283677 A JPH02283677 A JP H02283677A JP 10369889 A JP10369889 A JP 10369889A JP 10369889 A JP10369889 A JP 10369889A JP H02283677 A JPH02283677 A JP H02283677A
- Authority
- JP
- Japan
- Prior art keywords
- feldspathic
- formed article
- porous ceramic
- sound
- cao
- 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 17
- 239000002994 raw material Substances 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010453 quartz Substances 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 4
- 239000011707 mineral Substances 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000010433 feldspar Substances 0.000 abstract description 3
- 239000004575 stone Substances 0.000 abstract description 3
- 229920002261 Corn starch Polymers 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 239000008120 corn starch Substances 0.000 abstract description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 239000011358 absorbing material Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000004017 vitrification Methods 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JLWMMYZWEHHTFF-UHFFFAOYSA-N 2-[6-(3-carbamimidoylphenoxy)-4-[di(propan-2-yl)amino]-3,5-difluoropyridin-2-yl]oxy-5-(2-methylpropylcarbamoyl)benzoic acid Chemical compound OC(=O)C1=CC(C(=O)NCC(C)C)=CC=C1OC1=NC(OC=2C=C(C=CC=2)C(N)=N)=C(F)C(N(C(C)C)C(C)C)=C1F JLWMMYZWEHHTFF-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 244000018633 Prunus armeniaca Species 0.000 description 1
- 235000009827 Prunus armeniaca Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- 229910052661 anorthite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 229940099112 cornstarch Drugs 0.000 description 1
- GWWPLLOVYSCJIO-UHFFFAOYSA-N dialuminum;calcium;disilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] GWWPLLOVYSCJIO-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、吸音板や透水性舗装板等として用いられる多
孔質セラミンク成形体に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a porous ceramic molded body used as a sound-absorbing board, a water-permeable pavement board, etc.
（従来の技術）
上記のような吸音板や透水性舗装板等として用いられる
従来の多孔質セラミック成形体は、各種セラミックスの
焼結体を粉砕して得た粒状体に、水ガラスあるいは釉薬
等の焼結助剤とカルボキシルメチルセルロースのような
成形助剤と水とを混合して所望の板形状に成形し、乾燥
、焼成したものが普通であった。ところがこのような従
来の多孔質セラミック成形体は、製造工程が複雑である
うえに焼結助剤を必要とし、製造コストが高いという欠
点があった。(Prior Art) Conventional porous ceramic molded bodies used as sound-absorbing boards, water-permeable pavement boards, etc., as described above, are made by adding water glass or glaze to granular bodies obtained by crushing sintered bodies of various ceramics. Usually, a sintering aid such as sintering aid, a forming aid such as carboxymethylcellulose, and water were mixed, formed into a desired plate shape, dried, and fired. However, such conventional porous ceramic molded bodies have the disadvantage that the manufacturing process is complicated and requires a sintering aid, resulting in high manufacturing costs.
（発明が解決しようとする課題）
本発明は上記したような従来の問題点を解決して、焼結
助剤を用いることなく低コストで製造することができ、
しかも従来品と変わるところのない性能を持つ多孔質セ
ラミック成形体を提供するために完成されたものである
。(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and can be manufactured at low cost without using a sintering aid.
Moreover, it has been completed in order to provide a porous ceramic molded body that has the same performance as conventional products.
（課題を解決するための手段）
上記の課題を解決するためになされた本発明は、石英と
長石質鉱物を含有し、Ｋ、Ｏ成分とＮａ ｚｏ酸成分Ｃ
ａＯ成分との合計が２．５〜１４．５重量％の範囲内に
ある天然に産出する長石質原料を整粒後成形し焼結する
ことを特徴とするものである。(Means for Solving the Problems) The present invention, which was made to solve the above problems, contains quartz and feldspathic minerals, and contains K, O components, Na, zoic acid components, and C.
The method is characterized in that a naturally occurring feldspathic raw material having a total content of 2.5 to 14.5% by weight with the aO component is sized, shaped, and sintered.
このように、本発明においては通常のセラミック粒状体
の代わりに天然に産出する長石質原料をそのまま篩分整
粒するかあるいは長石質の岩石を粉砕し、整粒したもの
を原料として用いる。長石質原料は主鉱物であるカリ長
石、ソーダ長石、石英のほかに、灰長石、セリサイト等
を含有することもあり、陶石、長石、アプライド、花崗
岩、風化花崗岩等の岩石名で知られる。このような天然
の長石質原料のうちで、Ｋ、Ｏ、Ｎａ、０１ＣａＯの各
成分の合計量が２．５〜１４．５重量％のものを粒径が
０゜３〜５−程度に篩分整粒するか、粉砕整粒して使用
する。これらのにｇｏ 、ＮａｇＯＳＣａＯ成分は焼成
時にガラス化してバインダーとしての作用を生ずるもの
であり、その含有量が２．５重量％未満であると焼結が
不十分となって強度が低下し、逆に含有量が１４．５重
量％を越えるとガラス質の部分が過剰となって多孔質成
形体とはなりにくい。本発明においてはこのように天然
産の長石質岩石専売原料として用いるので、従来のよう
に結合剤としての釉薬等の焼結助剤を用いることなく天
然原料中に含まれる結合剤形成成分により結合して多孔
質セラミック成形体を得ることができる。As described above, in the present invention, instead of ordinary ceramic granules, naturally occurring feldspathic raw materials are sieved and sized as they are, or feldspathic rocks are crushed and sized and used as the raw material. In addition to the main minerals potassium feldspar, soda feldspar, and quartz, feldspathic raw materials may also contain anorthite, sericite, etc., and are known by rock names such as pottery stone, feldspar, apricot, granite, and weathered granite. . Among these natural feldspathic raw materials, those containing 2.5 to 14.5% by weight of each component of K, O, Na, and CaO are sieved to a particle size of about 0°3 to 5. Use by sizing or pulverizing into sized particles. Among these, the NagOSCaO component vitrifies during firing and acts as a binder, and if its content is less than 2.5% by weight, sintering will be insufficient and the strength will decrease, and vice versa. If the content exceeds 14.5% by weight, the glassy portion will be excessive and it will be difficult to form a porous molded product. In the present invention, since naturally produced feldspathic rock is used as a proprietary raw material, it is bonded by binder-forming components contained in the natural raw material without using a sintering aid such as a glaze as a binder as in the past. A porous ceramic molded body can be obtained by doing so.
また本発明では、長石質原料を０，３〜５ａａ程度に粉
砕あるいは整粒したものを原料として用いるが、−船釣
に粒径が１３ｍｍ以下の長石質原料は不要物として廃棄
されるものが多く、本発明はこのような廃材の有効利用
を図る意味も太き（、従って原料は極めて安価に入手す
ることが可能である。In addition, in the present invention, feldspathic raw materials that have been crushed or sized to about 0.3 to 5 aa are used as raw materials; In many cases, the present invention has a great significance in making effective use of such waste materials (therefore, raw materials can be obtained at extremely low prices).
このような長石質岩石等の粉砕整粒物にコーンスターチ
のような成形助剤と水とを添加したうえ、常法に従って
加圧成形し、乾燥したうえ１２５０〜１３５０°Ｃ程度
で焼成して本発明の多孔質セラミック成形体を得る。焼
成温度は、原料となる長石質原料中の石英分が多い場合
には高めに設定し、長石質が多い場合には低めに設定す
る。本発明の多孔質セラミック成形体は製造工程が簡単
で安価に製造できるうえ、次の実施例に示すように吸音
特性や強度の点でも従来品に劣らない利点がある。A molding aid such as cornstarch and water are added to the pulverized granulated material of feldspathic rock, etc., which is then pressure-molded according to a conventional method, dried, and fired at a temperature of about 1250 to 1350°C to form a book. A porous ceramic molded body of the invention is obtained. The firing temperature is set higher if the feldspathic raw material contains a large amount of quartz, and is set lower if the feldspathic material contains a large amount of quartz. The porous ceramic molded body of the present invention has a simple manufacturing process and can be manufactured at low cost, and as shown in the following examples, it has advantages comparable to conventional products in terms of sound absorption properties and strength.
（実施例）
まず化学組成が重量％で５ｉＯｚ ７９．８％、八１２
０゜１２．４％、Ｆｅ、０３０．１％、ＴｉＯ２０，１
％、Ｃａ００．６％、Ｍｇ００．５％、にｔｏ ０．５
％、ＮａｚＯ５，８％の長石質陶石を粉砕整粒した。粉
砕物の粒度分布は、４２０μ以下が３．５％、４２０〜
５９０ μが２５．９％、５９０〜１０００μが４５．
０％、１０００〜１４１０μが２５．３％、１４１０μ
以上のもの０．３％であった。このような粉砕整粒物に
成形助剤であ；つ ；ｒ” ａ＋＝ ： 保形π１とし
てコーンア、；−チの５０％水溶液を１０％添加し、混
練後にプレス成形し、成形品を乾燥した。乾燥後の成形
体密度は１．６ｇ／ｃ＋１であった。その後、これを１
２５０゛Ｃで焼成したところ、長石質ＷＪ万石中にｚＱ
、ＮａｚＯ１ＣａＯ成分がガラス化してバインダーと
して作用し、強固な多孔質セラミック成形体が得られた
。(Example) First, the chemical composition is 5iOz 79.8%, 812% by weight.
0°12.4%, Fe, 030.1%, TiO20.1
%, Ca00.6%, Mg00.5%, to 0.5
%, NazO5.8% feldspathic chinastone was crushed and sized. The particle size distribution of the pulverized product is 3.5% below 420μ, 420~
590μ is 25.9%, 590-1000μ is 45.
0%, 1000-1410μ is 25.3%, 1410μ
The above amount was 0.3%. 10% of a 50% aqueous solution of corn a, ;-ch was added as a forming aid to such a pulverized sized product, and the molded product was kneaded, then press-molded, and the molded product was dried. The density of the compact after drying was 1.6 g/c+1.
When fired at 250°C, zQ was found in the feldspathic WJ mangoku.
, NazO1CaO components were vitrified and acted as a binder, and a strong porous ceramic molded body was obtained.
この成形体の曲げ強度は７０ ｋｇ ／ ｃｊ程度であ
って従来のセラミンク粒状体を用いた公知の吸音体と同
等以上の強度を示した。またこの成形体の吸音特性を測
定したところ、第１図のグラフに示すとおり、従来の公
知の吸音体と変わらない優れた吸音性能を示した。The bending strength of this molded body was approximately 70 kg/cj, which was equivalent to or higher than that of a known sound absorbing body using conventional ceramic granules. Furthermore, when the sound absorbing properties of this molded body were measured, as shown in the graph of FIG. 1, it showed excellent sound absorbing performance comparable to that of conventional known sound absorbing bodies.
（発明の効果）
本発明は以上！、：説”Ａしたところから明らかなよう
に、天然に産出する長石質原料を従来のような別の焼結
助剤を用いることなく長石質原料中に含まれる結合剤と
しての働きのある成分で結合したものであり、原料とし
て従来は廃棄されていた長石質原料を粉砕、整粒して使
用できること、焼結助剤が不要であること、工程が？！
！学であること等Ｌ７１理由により極めて安価に製造す
ることができる、しかも本発明の多孔質セラミンク成形
体はその強度、吸音特性等の点においても従来品に比較
して劣るところがない。よって本発明は吸音板や透水性
舗装機等に好適な多孔質セラミック成形体として、産業
の発展に寄与するところ極めて大きいものがある。(Effect of the invention) That's all for the invention! , : Theory: As is clear from the section A, the naturally occurring feldspathic raw material can be used as a component that acts as a binder and is contained in the feldspathic raw material without using a separate sintering aid as in the past. It can be used as a raw material by crushing and sizing feldspathic raw materials that were conventionally discarded, and there is no need for sintering aids, and what is the process?!
! The porous ceramic molded article of the present invention can be produced at an extremely low cost due to the L71 reasons such as its high mechanical strength, and is not inferior to conventional products in terms of strength, sound absorption properties, etc. Therefore, the present invention greatly contributes to the development of industry as a porous ceramic molded body suitable for sound-absorbing plates, water-permeable paving machines, and the like.
第１図は実施例の多孔質セラミック成形体の吸音特性を
示すグラフである。
特許出願人 日本碍子株式会社FIG. 1 is a graph showing the sound absorption characteristics of the porous ceramic molded body of the example. Patent applicant Nippon Insulator Co., Ltd.
Claims (1)
成分とＣａＯ成分との合計が２．５〜１４．５重量％の
範囲内にある天然に産出する長石質原料を整粒後成形し
焼結することを特徴とする多孔質セラミック成形体。Contains quartz and feldspathic minerals, K_2O component and Na_2O
A porous ceramic molded body, characterized in that a naturally occurring feldspathic raw material having a total of 2.5 to 14.5% by weight of CaO components is sized, shaped, and sintered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10369889A JPH02283677A (en) | 1989-04-24 | 1989-04-24 | Porous ceramic formed article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10369889A JPH02283677A (en) | 1989-04-24 | 1989-04-24 | Porous ceramic formed article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02283677A true JPH02283677A (en) | 1990-11-21 |
Family
ID=14360986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10369889A Pending JPH02283677A (en) | 1989-04-24 | 1989-04-24 | Porous ceramic formed article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02283677A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2789093A1 (en) * | 1999-02-02 | 2000-08-04 | Carbone Savoie | GRAPHITE CATHODE FOR ALUMINUM ELECTROLYSIS |
| KR20010079132A (en) * | 2001-06-15 | 2001-08-22 | 김준규 | Fabrication of porous BaTiO3-based ceramics |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974209A (en) * | 1972-11-17 | 1974-07-17 |
-
1989
- 1989-04-24 JP JP10369889A patent/JPH02283677A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974209A (en) * | 1972-11-17 | 1974-07-17 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2789093A1 (en) * | 1999-02-02 | 2000-08-04 | Carbone Savoie | GRAPHITE CATHODE FOR ALUMINUM ELECTROLYSIS |
| WO2000046427A1 (en) * | 1999-02-02 | 2000-08-10 | Carbone Savoie | Impregnated graphite cathode for electrolysis of aluminium |
| US6723212B1 (en) | 1999-02-02 | 2004-04-20 | Carbone Savoie | Impregnated graphite cathode for the electrolysis of aluminium |
| KR20010079132A (en) * | 2001-06-15 | 2001-08-22 | 김준규 | Fabrication of porous BaTiO3-based ceramics |
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