JPH08319149A - Raw material for ceramic and its production - Google Patents
Raw material for ceramic and its productionInfo
- Publication number
- JPH08319149A JPH08319149A JP34791495A JP34791495A JPH08319149A JP H08319149 A JPH08319149 A JP H08319149A JP 34791495 A JP34791495 A JP 34791495A JP 34791495 A JP34791495 A JP 34791495A JP H08319149 A JPH08319149 A JP H08319149A
- Authority
- JP
- Japan
- Prior art keywords
- ceramics
- raw material
- pumiceous
- balloon
- balloons
- 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 35
- 239000002994 raw material Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000012535 impurity Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000004927 clay Substances 0.000 claims description 22
- 239000012779 reinforcing material Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000004576 sand Substances 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 3
- 238000004898 kneading Methods 0.000 abstract description 2
- 239000007970 homogeneous dispersion Substances 0.000 abstract 2
- 239000012744 reinforcing agent Substances 0.000 abstract 2
- 238000005245 sintering Methods 0.000 abstract 2
- 239000002689 soil Substances 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 150000002506 iron compounds Chemical class 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- 238000010304 firing Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 208000005156 Dehydration Diseases 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 239000013585 weight reducing agent 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
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、シラスバルーン
を利用した陶磁器原料に関する。とりわけ、不純物が除
去若しくは減少される前のシラスバルーン（以下一次シ
ラスバルーンと称する）と不純物が除去若しくは減少さ
れたシラスバルーン（以下二次シラスバルーンと称す
る）を利用した陶磁器原料に関する。さらに、これらの
シラスバルーンの製造方法とこれらのシラスバルーンを
利用した陶磁器の製造方法に関する。TECHNICAL FIELD The present invention relates to a ceramic raw material using a shirasu balloon. In particular, the present invention relates to a ceramic raw material using a shirasu balloon (hereinafter referred to as a primary shirasu balloon) before impurities are removed or reduced and a shirasu balloon in which impurities are removed or reduced (hereinafter referred to as a secondary shirasu balloon). Furthermore, the present invention relates to a method for producing these shirasu balloons and a method for producing ceramics using these shirasu balloons.
【０００２】[0002]
【従来の技術】シラスは火山噴出物の一種で白色または
灰白色の堆積物（白砂、白州）として知られている。シ
ラスの化学成分と成分比は、ＳｉＯ2 （６５〜７３）、
Ａｌ2 Ｏ3 （１２〜１６）、Ｆｅ2 Ｏ3 、（１〜３）、
ＣａＯ（２〜４）、Ｎａ2 Ｏ（３〜４）、Ｋ2 Ｏ（２〜
４）、ＴｉＯ2 （０．２〜０．７）、ＭｇＯ（０．４〜
１）、であることも知られている。従って、前記した成
分と成分比から明らかなように、軽量であることのほか
耐火・断熱性にすぐれ、吸水率が少ないなどの利点があ
り、廉価に得られるため経済的にもすぐれているので、
新素材として産業界で着目されている。Shirasu is a type of volcanic ejecta known as white or off-white deposits (white sand, Hakushu). The chemical composition and composition ratio of Shirasu are SiO 2 (65-73),
Al 2 O 3 (12 to 16), Fe 2 O 3 , (1 to 3),
CaO (2~4), Na 2 O (3~4), K 2 O (2~
4), TiO 2 (0.2 to 0.7), MgO (0.4 to
1), is also known. Therefore, as is clear from the above-mentioned components and component ratios, in addition to being lightweight, it also has advantages such as excellent fire resistance and heat insulation, and low water absorption, and it is economical because it can be obtained at a low price. ,
It is attracting attention in the industrial world as a new material.
【０００３】そこで、近年シラスが産業界で着目され、
更にシラス粉砕物を焼成し、加熱膨張され、独立気泡を
有するシラスを一次精製したものがいわゆるシラスバル
ーンと指称され、新素材に供されている。シラスバルー
ンは最近市場へ出荷されており、モルタル上塗り用、プ
ラスター上塗り用、吹付材などの建築用として、また、
苗床用、土地改良材などの農業用に主として採用されて
いる。Therefore, in recent years, Shirasu has attracted attention in the industrial world,
Further, a crushed shirasu product is fired, expanded by heating, and primary purified shirasu having closed cells is called a so-called shirasu balloon, which is used as a new material. Shirasu balloons have recently been shipped to the market, for mortar top coating, plaster top coating, construction materials such as spraying materials, and
It is mainly used for nurseries, agricultural products such as land improvement materials.
【０００４】また、最近の特開昭５５−１１６６５１号
公報、同６２−９８５９２号公報、同６３−２０３５５
５号公報を見るとタイルや電子レンジ用トレイ、食品容
器などの原料として市販品のシラスバルーンを採用する
ことが開示されている。Further, recent Japanese Patent Laid-Open Nos. 55-116651, 62-98592 and 63-20355.
Japanese Patent Publication No. 5 discloses that a commercially available shirasu balloon is used as a raw material for tiles, trays for microwave ovens, food containers and the like.
【０００５】ところが、シラスバルーンは天然物である
から、鉄分やチタンなどの不純物を含んでいるため、そ
の物性から陶磁器の軽量化などに寄与できる有利性を有
するものの、焼成時に鉄分などの不純物が酸化する結
果、製品にしみが発生したり、白色性に欠けるという問
題点のあることが判明した。However, since Shirasu balloon is a natural product and contains impurities such as iron and titanium, it has an advantage that it can contribute to weight reduction of ceramics due to its physical properties, but impurities such as iron during firing. As a result of the oxidation, it has been found that there are problems that the product has stains and lacks whiteness.
【０００６】更に、シラスバルーンは発泡性に富み軽量
であるという有利な特徴を有するが、坏土などの他の陶
磁器用原料と混合混練する場合、シラスバルーンは坏土
などの他の陶磁器原料と比較して比重較差の大幅な差異
により均一な混合分散が困難であるという問題のあるこ
とも明らかになった。Further, although the shirasu balloon has an advantageous characteristic that it is rich in foamability and lightweight, when mixed and kneaded with other raw materials for ceramics such as kneaded clay, the shirasu balloon is mixed with other raw materials for ceramics such as kneaded clay. By comparison, it became clear that there is a problem that uniform mixing and dispersion is difficult due to the large difference in specific gravity difference.
【０００７】また、シラスバルーンの有する軽量性を利
用しようとすると、二次的に陶磁器の強度を損なうこと
も発明者らの実験により判明した。Further, it has been found by the experiments of the inventors that the strength of ceramics is secondarily impaired if the lightness of the Shirasu balloon is used.
【０００８】前記したように、シラスバルーンは多くの
物性に富んでおり、その上安価に得られる有利性を備え
ているため、産業界で新規素材として着目されているも
のの、未だ用途に制約を受け、従来のシラスバルーンを
そのまま陶磁器用原料として採用することはできなかっ
たので更に改良と工夫が要請されていた。As described above, since Shirasu balloons are rich in physical properties and have the advantage that they can be obtained at low cost, they are attracting attention as a new material in the industrial world, but their use is still restricted. On the other hand, the conventional shirasu balloon could not be used as it is as a raw material for ceramics, so further improvement and ingenuity were required.
【０００９】[0009]
【発明が解決しようとする課題】そこで、この発明はシ
ラスバルーンを陶磁器用原料として効果的に活用できる
ようにするため、鉄分やチタンなどの不純物の除去若し
くは減少させることも発明の課題の一つとしている。Therefore, in order to effectively utilize shirasu balloon as a raw material for ceramics, the present invention is also one of the objects of the invention to remove or reduce impurities such as iron and titanium. I am trying.
【００１０】更に、シラスバルーンと坏土などの他の原
料との混合の均一分散を図ることやシラスバルーンの有
利性を損なうことなく陶磁器の強度を図ることも発明の
課題とする。Another object of the present invention is to achieve uniform dispersion of the shirasu balloon and other raw materials such as kneaded clay and to improve the strength of the ceramics without impairing the advantages of the shirasu balloon.
【００１１】[0011]
【課題を解決するための手段】第１番目の陶磁器用原料
の発明は、坏土およびアルミナなどの強化材に、不純物
が除去若しくは減少される前のシラスバルーンが均一に
攪拌分散されてなることを特徴とするものであり、The first invention of a raw material for ceramics is that a silas balloon before impurities are removed or reduced is uniformly stirred and dispersed in a reinforcing material such as kneaded clay and alumina. Is characterized by
【００１２】第２番目の陶磁器用原料の発明は、坏土お
よびアルミナなどの強化材に、不純物を除去若しくは減
少されたシラスバルーンが均一に攪拌分散されてなるこ
とを特徴とするものであり、The second invention of a raw material for ceramics is characterized in that a silass balloon from which impurities have been removed or reduced is uniformly stirred and dispersed in a reinforcing material such as clay and alumina.
【００１３】第３番目の陶磁器用原料の発明は、水中で
均一に攪拌分散された不純物が除去若しくは減少される
前のシラスバルーンに、坏土およびアルミナなどの強化
材が攪拌混合され、乾燥処理されてなることを特徴とす
るものであり、The third invention of a raw material for ceramics is to dry-treat kneaded clay and a reinforcing material such as alumina by stirring and mixing with a shirasu balloon before the impurities uniformly stirred and dispersed in water are removed or reduced. It is characterized by being
【００１４】第４番目の陶磁器用原料の発明は、水中で
均一に攪拌分散された不純物が除去若しくは減少された
シラスバルーンに、坏土およびアルミナなどの強化材が
攪拌混合され、乾燥処理されてなることを特徴とするも
のであり、The fourth invention of the raw material for ceramics is that the silas balloon in which the impurities are uniformly stirred and dispersed in water is removed or reduced, the kneaded clay and the reinforcing material such as alumina are stirred and mixed, and dried. It is characterized by
【００１５】陶磁器用原料の製造方法の発明は、不純物
が除去若しくは減少されたシラスバルーン、坏土および
アルミナなどの強化材を水中で攪拌混合させ、乾燥処理
することを特徴とするものである。The invention of a method for producing a raw material for ceramics is characterized in that a reinforcing material such as shirasu balloon, kneaded clay and alumina from which impurities are removed or reduced is stirred and mixed in water and dried.
【００１６】したがって、これらの発明は、不純物が除
去若しくは減少されたものであるか否かを問わず、シラ
スバルーンが坏土や強化材に均一に分散されるので、そ
の陶磁器用原料を用いて陶磁器を製造することにより、
シラスバルーンは焼成されることにより、溶融されて中
空のガラス球体に変化する。つまり、空洞が製品中に均
一に分布することになる結果、従来の製品と異なり荷重
の均一化された製品が得られる。Therefore, in these inventions, the shirasu balloons are uniformly dispersed in the kneaded clay and the reinforcing material regardless of whether the impurities are removed or reduced, so that the ceramic raw material is used. By manufacturing ceramics,
When the shirasu balloon is fired, it is melted and transformed into hollow glass spheres. In other words, as a result of the cavities being uniformly distributed in the product, a product with a uniform load can be obtained unlike the conventional products.
【００１７】[0017]
【発明の実施の形態】この発明の実施の形態を説明する
に先立って陶磁器製品の製造工程の概略を下記に記載す
る。 シラス岩石を破砕して非バルーンシラス粉砕物を得
る。 非バルーンシラス粉砕物を焼成し、加熱膨張させて一
次シラスバルーンを得る。 一次シラスバルーンを一定の粒径に精製する。 一次シラスバルーン中から不純物を除去して二次シラ
スバルーンを得る。 二次シラスバルーンと水とを攪拌混合する。 二次シラスバルーンと水との混合物に坏土と強化材を
攪拌混合する。 のものを均一に攪拌混合混練した後に脱水処理し、
陶磁器用原料を得る。 以下、成型、乾燥、施釉、焼成の各工程を経て製品を
得る。 なお、前記のの工程との工程の順序を前後反対にす
ることも予定される。つまり、二次シラスバルーンを得
るについて予め不純物を除去させた上、シラスをバルー
ン化する方法とバルーン化させたシラス中から爾後不純
物を除去させる方法である。BEST MODE FOR CARRYING OUT THE INVENTION Before describing the embodiments of the present invention, the outline of the manufacturing process of a ceramic product will be described below. Shirasu rock is crushed to obtain a non-balloon Shirasu crushed product. The non-balloon shirasu ground product is fired and expanded by heating to obtain a primary shirasu balloon. The primary Shirasu balloon is refined to a constant particle size. Impurities are removed from the primary shirasu balloon to obtain a secondary shirasu balloon. The secondary shirasu balloon and water are mixed by stirring. The kneaded material and the reinforcing material are mixed by stirring in a mixture of the secondary shirasu balloon and water. After stirring, mixing and kneading the materials evenly, dehydration treatment,
Obtain raw materials for ceramics. Then, a product is obtained through each step of molding, drying, glaze and firing. It should be noted that it is also planned to reverse the order of the steps to the above steps. That is, in order to obtain a secondary shirasu balloon, there are a method of removing impurities in advance and a method of ballooning the shirasu, and a method of subsequently removing impurities from the ballooned shirasu.
【００１８】以下にこの発明の詳細を図面を参照して説
明する。図１はこの発明の工程図の概要を示し、図２は
製品（茶碗）の略示的一部拡大断面図であり、図３は図
２の要部拡大図である。天然に算出するシラス岩石１０
を粉砕する。その粉砕物は当然のことながら、極めてそ
の大きさにバラツキのあることはいうまでもない。The details of the present invention will be described below with reference to the drawings. FIG. 1 shows an outline of a process diagram of the present invention, FIG. 2 is a schematic partially enlarged sectional view of a product (cup), and FIG. 3 is an enlarged view of a main part of FIG. Naturally calculated silas rock 10
Crush. Needless to say, the pulverized product naturally has extremely large variations in size.
【００１９】しかし、バラツキがあるものの、一定の大
きさの粒径のものを選別することにより用途毎の使用に
供することができるから、粉砕後のシラスを前記したよ
うに焼成し、加熱膨張させることによりシラスの粉砕物
を「バルーン化」させて微細なシラスバルーン１２を得
ることにより使用できるので、この一次シラスバルーン
１２は一部の産業分野において使用されている。この場
合の焼成温度は概ねシラスの軟化点である９００〜１，
０００℃以下であることが好ましい。However, although there are variations, it is possible to use for each application by selecting those having a certain particle size, so the crushed shirasu is fired and heated and expanded as described above. The primary shirasu balloon 12 is used in some industrial fields because it can be used by "ballooning" the crushed shirasu to obtain a fine shirasu balloon 12. The firing temperature in this case is generally 900-1, which is the softening point of Shirasu,
It is preferably 000 ° C or lower.
【００２０】次に前記の工程により得た一次シラスバル
ーン１２を篩にかけて選別処理を行うが、その一次シラ
スバルーン１２の粒径の大きさは陶磁器用原料として使
用する場合、ある一定の範囲内の粒径のものに制限され
ることが実験的に明らかとなった。Next, the primary shirasu balloon 12 obtained in the above step is sieved to perform a selection process. The particle size of the primary shirasu balloon 12 is within a certain range when used as a raw material for ceramics. It has been experimentally revealed that the particle size is limited.
【００２１】例えば、用途により異なるが、従来使用さ
れている粒径が１５０〜３００μ以上の一次シラスバル
ーン１２の大きさのものをそのまま使用した場合、一次
シラスバルーン１２中に含有される鉄分、チタンなどの
不純物の混入が過度になり、製品化したときに製品に
“しみ”が顕著に表れ、この発明の課題の一つである白
色性に富んだ陶磁器製品が得られないという欠点のある
ことが判明した。For example, when the size of the primary shirasu balloon 12 having a particle size of 150 to 300 μ or more, which has been conventionally used, is used as it is, the iron content and titanium contained in the primary shirasu balloon 12 vary depending on the use. There is a drawback that excessive contamination of impurities such as “stain” will appear in the product when it is commercialized, and that a ceramic product rich in whiteness, which is one of the subjects of the present invention, cannot be obtained. There was found.
【００２２】他方、粒径２５μ以下のものの場合では一
次シラスバルーン１２の粒径が小さすぎていわゆる「か
さ」が小さく、一次シラスバルーン１２が含有する本来
の機能を奏しないという問題がある。On the other hand, when the particle size is 25 μm or less, there is a problem that the particle size of the primary shirasu balloon 12 is too small and so-called “bulk” is small, and the primary function of the primary shirasu balloon 12 is not exhibited.
【００２３】つまり、製品中に小さな空洞を発生させる
ことにより、製品の軽量化を図ることが目的の一つであ
るが、一次シラスバルーン１２の粒径が小さすぎる場
合、実質上製品中に気泡が発生しないことになるし、耐
火度を降下させる原因にもなり、前記した粒径が下限で
あることが実験的に明らかとなった。That is, one of the purposes is to reduce the weight of the product by generating small cavities in the product. However, when the particle size of the primary shirasu balloon 12 is too small, bubbles are substantially contained in the product. It has been experimentally clarified that the above-mentioned particle size is the lower limit because it does not occur and also causes a decrease in fire resistance.
【００２４】以上の理由により一次シラスバルーン１２
を先ず２５〜１５０μ単位の粒径のものに選別する。こ
の選別作業は１００〜１２０メッシュ程度の編目機構を
備えたいわゆる振動式網篩機１４を採用し、予め水中に
投入された一次シラスバルーン１２をポンプで汲んで処
理した。For the above reasons, the primary silas balloon 12
Is first selected to have a particle size of 25 to 150 μ units. For this sorting operation, a so-called vibrating mesh screen machine 14 equipped with a knitting mechanism of about 100 to 120 mesh was adopted, and the primary shirasu balloon 12 previously put into water was pumped and processed.
【００２５】かくして一次シラスバルーン１２中の鉄分
やチタンなどの不純物１８が分離され純度の高い精製さ
れた二次シラスバルーン２０が得られた。チタンは鉄分
と異なり、必ずしも磁性体とはいえないから、マグネッ
トフィルター１６を介して分離除去できないことが想像
される。Thus, the impurities 18 such as iron and titanium in the primary shirasu balloon 12 were separated to obtain a highly purified and purified secondary shirasu balloon 20. Titanium, unlike iron, is not necessarily a magnetic substance, so it is imagined that titanium cannot be separated and removed via the magnet filter 16.
【００２６】ところが、一次シラスバルーンル１２は天
然産出物であるため、チタンは鉄分に付着しているか
ら、このチタンは鉄分と一緒にマグネットの磁力作用を
受けて分離できるという有利性がある。However, since the primary silas-balloon 12 is a natural product, titanium is attached to iron, and this titanium has the advantage that it can be separated together with iron by the magnetic force of a magnet.
【００２７】なお、前記した用語「不純物の除去若しく
は減少」とは、不純物１８を完全に除去する場合と不完
全であるが大幅に不純物を減少させることを意味してい
る。The term "removal or reduction of impurities" as described above means that the impurities 18 are significantly removed although they are incomplete when the impurities 18 are completely removed.
【００２８】このようにして不純物１８を除去若しくは
減少させることにより、従来の一次シラスバルーン１２
と比較して成分と成分比の異なる前処理された二次シラ
スバルーン２０の微粉末を水２２の中で攪拌させたとこ
ろ、二次シラスバルーン２０が水２２中の上層に偏って
浮上するようなことがなく、水２２中に均一に分散して
混合できた。By removing or reducing the impurities 18 in this manner, the conventional primary silas balloon 12 is used.
When the fine powder of the pre-treated secondary shirasu balloon 20 having different components and component ratios was stirred in the water 22 as compared with, the secondary shirasu balloon 20 was unevenly floated in the upper layer in the water 22. It could be uniformly dispersed in the water 22 and mixed.
【００２９】この実施例で坏土２６と強化材２８の混合
したものを水２２中に入れることを説明したが、両者を
分離して坏土２６、強化材２８の順序により混合攪拌す
ることももとより予定される。In this embodiment, it is explained that the mixture of the kneaded clay 26 and the reinforcing material 28 is put into the water 22, but they may be separated and mixed and stirred in the order of the kneaded clay 26 and the reinforcing material 28. Originally planned.
【００３０】水槽２４内に二次シラスバルーン２０のみ
を単独により投入させて水２２と攪拌混合させることが
好ましいが、用途により坏土２６と二次シラスバルーン
２０とを同時に攪拌混合することも考慮される。It is preferable that only the secondary shirasu balloon 20 is separately put into the water tank 24 and agitated and mixed with the water 22, but it is also considered that the kneaded clay 26 and the secondary shirasu balloon 20 are agitated and mixed simultaneously depending on the use. To be done.
【００３１】なお、水２２と二次シラスバルーン２０、
坏土２６および強化材２８の微粉末との混合比は概略
１：１程度によることが好ましいことも実験的に明らか
となった。The water 22 and the secondary silas balloon 20,
It was also empirically revealed that the mixing ratio of the kneaded clay 26 and the reinforcing material 28 to the fine powder is preferably about 1: 1.
【００３２】前記した用語「強化材」は、この明細書に
おいてはアルミナ、ジルコン、クリストバライトなどの
微粉末であって、焼成したときに結晶化するものである
ことを意味する。The term "reinforcement" as used herein means a fine powder of alumina, zircon, cristobalite, etc., which crystallizes when fired.
【００３３】このようにして混合された二次シラスバル
ーン２０、坏土２６および強化材２８の微粉末はもちろ
ん、多量に水分を含有しているから、普通に処理される
ように脱水機２９によって脱水処理を施すことにより粘
土状の陶磁器用原料が得られる。The secondary shirasu balloon 20, kneaded clay 26 and reinforcing material 28 mixed in this way contain a large amount of water, as well as a large amount of water. By performing the dehydration treatment, a clay-like raw material for ceramics can be obtained.
【００３４】脱水処理後の二次シラスバルーン２０を混
合させた陶磁器用原料は保管と輸送の都合から一定の形
状を保つ程度にケーキ３０として成型することがよい。
この場合普通に実施されるように真空土練機３２が使用
される。The raw material for ceramics mixed with the secondary shirasu balloon 20 after the dehydration treatment is preferably molded as a cake 30 so as to maintain a certain shape for the convenience of storage and transportation.
A vacuum clay kneader 32 is used as is customary in this case.
【００３５】特に陶磁器用原料を不安定な状態に保持す
れば、輸送中や取扱中に二次シラスバルーン２０が再度
浮上するおそれがあり、折角均一に分散した二次シラス
バルーン２０が不均一化するおそれがあることから、ケ
−キ３０として保管することは有利である。Particularly, if the raw material for ceramics is held in an unstable state, the secondary silas balloon 20 may re-float during transportation or handling, and the secondary silas balloon 20 uniformly dispersed at an even angle is not uniform. Therefore, it is advantageous to store it as the cake 30.
【００３６】以後の工程は特に通常実施される陶磁器の
一般的製造プロセスと比較して変化はなく、成型、乾
燥、施釉、焼成の各工程を経て製品の製造が行われる
が、焼成温度は１，０００〜１，３００℃程度が適当で
ある。これらの各工程は、一般的に知られるように、成
型機３４によって成型し、乾燥炉３６を介して乾燥が行
われる。The subsequent steps are not particularly different from the general manufacturing process of ceramics which is usually carried out, and the product is manufactured through the steps of molding, drying, glaze and baking, but the baking temperature is 1 1,000 to 1,300 ° C. is suitable. As is generally known, each of these steps is performed by a molding machine 34 and drying is performed through a drying furnace 36.
【００３７】そして、施釉装置３８によりル釉薬処理が
なされ、焼成炉４０により焼成が実施され、製品４２が
製造される。なお、焼成時に原料中の二次シラスバルー
ン２０の大部分は溶融し、その二次シラスバルーン２０
が分散した無数の箇所が小さい空洞４４として構成され
ることになる（図２および図３を参照）。Then, a glaze treatment is performed by the glaze application device 38, and firing is performed by the firing furnace 40 to produce a product 42. In addition, most of the secondary silas balloons 20 in the raw material are melted during firing, and the secondary silas balloons 20 are melted.
The innumerable locations in which are dispersed are configured as small cavities 44 (see FIGS. 2 and 3).
【００３８】この場合、二次シラスバルーン２０は焼成
されて、空洞４４の外壁に半溶融化した層４６ができ
（図３を参照）、この層４６は空洞４４の周囲に存する
他の原料である坏土２６や強化材２８と固く結合する。
従って、半溶融化した層４６が残存している構成になる
が、製品焼成時の温度が前記したようにバルーン化時の
焼成温度より高いため、残存している前記の層４６はガ
ラス化し、製品の強度に寄与することになる。In this case, the secondary shirasu balloon 20 is fired to form a semi-molten layer 46 on the outer wall of the cavity 44 (see FIG. 3), which layer 46 is composed of other raw materials around the cavity 44. It is firmly bonded to a certain clay 26 and a reinforcing material 28.
Therefore, the semi-molten layer 46 remains, but since the temperature during firing of the product is higher than the firing temperature during ballooning as described above, the remaining layer 46 vitrifies, It will contribute to the strength of the product.
【００３９】[0039]
【発明の効果】二次シラスバルーンの焼成時の残存物つ
まり半溶融化した層は溶融して空洞の外側面に球状にガ
ラス化して溶着するものの、ガラス化したものは中空体
であるから、製品中には多数の空隙を構成することにな
り、従来品と比較して約２０％程度軽量化され、白色性
に富んだ製品が得られるし、二次シラスバルーンが陶磁
器原料中に均一に分散するため、焼成時に空洞に分散も
均一化して形成されることになる結果、製品の荷重が平
均化される。EFFECTS OF THE INVENTION The residue of the secondary shirasu balloon during firing, that is, the semi-molten layer is melted and vitrified into a spherical shape on the outer surface of the cavity, but the vitrified material is a hollow body. Since many voids are formed in the product, it is about 20% lighter than the conventional product, and a product with rich whiteness is obtained, and the secondary shirasu balloon is evenly distributed in the ceramic raw material. Since the particles are dispersed, the particles are uniformly dispersed in the cavities during firing, and as a result, the load of the product is averaged.
【図１】この発明の実施例による工程の概略図である。FIG. 1 is a schematic view of a process according to an embodiment of the present invention.
【図２】製品の一部拡大断面図である。FIG. 2 is a partially enlarged sectional view of a product.
【図３】図２の要部拡大図である。FIG. 3 is an enlarged view of a main part of FIG. 2;
１２ 一次シラスバルーン １８ 不純物 ２０ 二次シラスバルーン ２２ 水 ２６ 坏土 ２８ 強化材 12 Primary shirasu balloon 18 Impurity 20 Secondary shirasu balloon 22 Water 26 Kneaded clay 28 Reinforcement material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山口 孝雄 神奈川県鎌倉市台1540番地 (72)発明者 斉藤 攻 神奈川県厚木市温水99の８ ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takao Yamaguchi 1540, Tai, Kamakura City, Kanagawa Prefecture (72) Inventor Satoshi Saito 8 of 99, Atsui, Atsugi City, Kanagawa Prefecture
Claims (5)
純物が除去若しくは減少される前のシラスバルーンが均
一に攪拌分散されてなることを特徴とする陶磁器用原
料。1. A raw material for ceramics, wherein silass balloons before impurities are removed or reduced are uniformly stirred and dispersed in a reinforcing material such as kneaded clay and alumina.
純物が除去若しくは減少されたシラスバルーンが均一に
攪拌分散されてなることを特徴とする陶磁器用原料。2. A raw material for ceramics, characterized in that silass balloon from which impurities are removed or reduced is uniformly stirred and dispersed in a reinforcing material such as kneaded clay and alumina.
去若しくは減少される前のシラスバルーンに、坏土およ
びアルミナなどの強化材が攪拌混合され、乾燥処理され
てなることを特徴とする陶磁器用原料。3. Ceramics characterized by being obtained by mixing and mixing a silass balloon before removing or reducing impurities uniformly stirred and dispersed in water with a reinforcing material such as kneaded clay and alumina and drying the mixture. Raw material.
去若しくは減少されたシラスバルーンに、坏土およびア
ルミナなどの強化材が攪拌混合され、乾燥処理されてな
ることを特徴とする陶磁器用原料。4. A raw material for ceramics, characterized in that a silass balloon from which impurities are uniformly dispersed in water by stirring is dispersed or mixed with a reinforcing material such as kneaded clay and alumina and dried. .
バルーン、坏土およびアルミナなどの強化材を水中で攪
拌混合させ、乾燥処理することを特徴とする陶磁器用原
料の製造方法。5. A method for producing a raw material for ceramics, which comprises stirring and mixing, in water, a reinforcing material such as shirasu balloon, kneaded clay, and alumina from which impurities have been removed or reduced, and which is then dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34791495A JPH08319149A (en) | 1995-12-14 | 1995-12-14 | Raw material for ceramic and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34791495A JPH08319149A (en) | 1995-12-14 | 1995-12-14 | Raw material for ceramic and its production |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3278868A Division JP2673396B2 (en) | 1991-09-30 | 1991-09-30 | Manufacturing method of ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08319149A true JPH08319149A (en) | 1996-12-03 |
Family
ID=18393467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34791495A Pending JPH08319149A (en) | 1995-12-14 | 1995-12-14 | Raw material for ceramic and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08319149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021062360A (en) * | 2019-10-11 | 2021-04-22 | 呉剛 | Porcelain manufacturing purification facility |
-
1995
- 1995-12-14 JP JP34791495A patent/JPH08319149A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021062360A (en) * | 2019-10-11 | 2021-04-22 | 呉剛 | Porcelain manufacturing purification facility |
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