JPH03272807A - Method of defoaming and force-feeding kneaded slurry - Google Patents
Method of defoaming and force-feeding kneaded slurryInfo
- Publication number
- JPH03272807A JPH03272807A JP2071881A JP7188190A JPH03272807A JP H03272807 A JPH03272807 A JP H03272807A JP 2071881 A JP2071881 A JP 2071881A JP 7188190 A JP7188190 A JP 7188190A JP H03272807 A JPH03272807 A JP H03272807A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- defoaming
- force
- feeding
- valve
- 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.)
- Granted
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005086 pumping Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 abstract description 15
- 238000002156 mixing Methods 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000000452 restraining effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 6
- 238000004898 kneading Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
【発明の詳細な説明】
〔概 要ミ・
混練スラリーの脱泡圧送方法に係り、特にセラミック基
板を製造する際に原料を整粒した後、混練して得られた
スラリーを脱泡し、グリーンシート成形用ダムへ圧送す
る方法に関し、
ガスの再混入を防止（７た混練スラリーの脱泡圧送０）
方法を提供することを目的とし、混練スラリーを脱泡さ
せるために、該混練スラリーを回転させる回転治具を有
する混練スラリー・−の脱泡・圧送装置を用いて、該混
練スラリーを脱泡・圧送する方法において、前記脱泡時
に前４己回転治具の回転数を１５０−２００同転／分と
［７、該脱泡後、次工程へ０）圧送時に前記回転治具の
回転数を２０〜４０回転／分とすることを構成とする。[Detailed Description of the Invention] [Summary Mi- This relates to a method for defoaming and pressure-feeding a kneaded slurry, in particular, when manufacturing a ceramic substrate, after sizing raw materials, the slurry obtained by kneading is defoamed, and a green Regarding the method of pressure feeding to the dam for sheet forming, prevention of gas re-mixing (0)
In order to defoam the kneaded slurry, the kneaded slurry is defoamed and pumped using a kneaded slurry defoaming/pressure device having a rotating jig that rotates the kneaded slurry. In the pressure feeding method, the rotation speed of the front four self-rotating jig is set to 150-200 rotations/min during the defoaming [7, After the defoaming, proceed to the next step 0) The rotation speed of the rotating jig is set to 150-200 rotations/min. The configuration is such that the rotation speed is 20 to 40 revolutions/minute.
し産業上の利用分野；
本発明は混練スラリーの脱泡圧送方法に係り、特にセラ
ミック基板を製造する際に原料を整粒ｊ７た後、混練し
て得られたスラリーを脱泡し、グリーンンート成形用ダ
Ａ ’＼圧送する方法に関する。Field of industrial application: The present invention relates to a method for defoaming and pumping a kneaded slurry, and in particular, when producing a ceramic substrate, after sizing the raw materials, the slurry obtained by kneading is defoamed, and the slurry is degassed. Concerning the method of pressure feeding for molding.
〔従来の技術ｊ
従来、セラミック基板を製造−づる前段階として例えば
所定量のアルミナ、ガラス粉末等の原料を混合し、ボー
ルミルにて整粒して粉夫札径を均一化し、乾燥後、再び
ボールミルにて混練しでスラリーを得ていた１゜
この混練スラリー中には、混練中に巻き込まれた空気（
ガス）が含有されており、このガスを取り除くため混練
後、脱泡工程及びグリーンシー ト成、形用のダムへの
該スラリーの圧送工程が行われる。[Conventional technology] Conventionally, as a step before producing ceramic substrates, for example, a predetermined amount of raw materials such as alumina and glass powder are mixed, the particles are sized in a ball mill to make the diameter of the powder uniform, and after drying, they are mixed again. Slurry was obtained by kneading in a ball mill.1゜In this kneaded slurry, air (
To remove this gas, after kneading, a defoaming process and a process of pumping the slurry to a dam for green sheet formation and shaping are performed.
従来このスラリー用脱泡］−４程と圧送工程は第１図に
示す脱泡・圧送装置１と称される装置によってなされて
いる。Conventionally, the slurry defoaming step -4 and the pressure feeding process have been carried out by an apparatus called a defoaming/pressure feeding apparatus 1 shown in FIG.
ずなわち、脱泡・ル送装置１はその容器１０内に被処理
ヰ４のスラリ・・−２が収納され、脱泡時に真空ポンプ
３を用いバルブ４ａを開として装置内部が約６０〜・７
０ｃｍＨｇの高真空にされる。次に上記に取り付けられ
たエアモータ５を用シ′１″Ｃ−アンカー６を回転さセ
でスラリ・−２を撹拌し脱泡していた。次にバルブ４ｂ
を開とし、一方バルブ４ａを閉にしＣ脱泡されたスラリ
ー２の室内にＮ２ガスを供給し、バルブ４Ｃを開にしｒ
脱泡されたスラリーをダノ・１（図示せず）へ圧送しで
いた。That is, in the defoaming/feeding device 1, the slurry to be treated 4 is stored in the container 10, and when defoaming, the vacuum pump 3 is used to open the valve 4a, and the inside of the device is heated to about 60 to 60 ml.・7
A high vacuum of 0 cmHg is applied. Next, the air motor 5 attached above was used to rotate the C-anchor 6 to agitate the slurry-2 to defoam the valve 4b.
On the other hand, close the valve 4a, supply N2 gas into the chamber of the degassed slurry 2, and open the valve 4C.
The defoamed slurry was pumped to Dano 1 (not shown).
上記脱泡、圧送丁程中のスラリーの攪拌はアンカー６を
約１８０回転／分（ＲＰＭ）の同転数で回転させて行な
っていた。この１８０ＲＰＭの回転数は脱泡工程ではガ
スをスラリー中から泡として“有効に抜くことがｉｂ来
た。The slurry was stirred during the defoaming and pressure feeding steps by rotating the anchor 6 at a rotation speed of about 180 revolutions per minute (RPM). This rotational speed of 180 RPM was able to effectively remove gas from the slurry in the form of bubbles during the defoaming process.
しかしながら同じ１８０ＰＰＭの回転数の圧送工程では
一旦脱泡工程で生じた気泡（ガス）をスラリー＋４−１
１こ再混入させてしまい、このガスが成形後のグリ−・
ンシート表面やその内部にピット、気孔の様なぶ”つぶ
つを生じ製品歩留にも悪影響を及ぼしでいた。However, in the pumping process at the same rotation speed of 180 PPM, the air bubbles (gas) generated in the defoaming process are mixed into slurry + 4-1
This gas may be mixed into the grease after molding.
This resulted in pits and pore-like bulges on the surface and inside of the sheet, which had a negative impact on product yield.
本発明はガスの再混入を防止した混練スラリーの脱泡圧
送方法を提供４″ることを目的とする。An object of the present invention is to provide a method for defoaming and pumping a kneaded slurry that prevents gas from being re-entrained.
上記課題は本発明によれば混練スラリーを脱泡させるた
めに、該混線スラリーを回転させる回転治具を有する混
練スラリーの脱泡・圧送装置を用いて、該混練スラリー
・４脱泡・圧送する方法において、
前記脱泡時に前記回転治具の回転数を１５０”−・２０
０同転／″分とし、該脱泡後、次工程への圧送時（ご前
記回←、ζ治具の回転数を２［］＝４０回転／分とする
。：、と４特徹とする混練スラリーの脱泡・Ｂ′：送力
法に６′Ｊ′って解決される。According to the present invention, in order to defoam the kneaded slurry, the kneaded slurry is defoamed and pumped using a kneaded slurry defoaming/pressure feeding device having a rotating jig for rotating the kneaded slurry. In the method, the number of rotations of the rotating jig is set at 150"-20 during the defoaming.
0 rotation/min., and after degassing, when pumping to the next process (as above, the rotation speed of the ζ jig is 2[] = 40 rotations/min.:, and 4 Tokutetsu). Defoaming of the kneaded slurry B': 6'J' is solved by the feeding force method.
本発明では脱泡工程時回転治具の回転数は約１８０回転
、７分が好ましく２００回転／分を超えると泡がぐち一
方１５０四転／分未満の場合は撹拌効饗による脱泡が正
常になされない。In the present invention, the rotation speed of the rotating jig during the defoaming process is preferably about 180 revolutions for 7 minutes, and if it exceeds 200 revolutions/min, bubbles will form, whereas if it is less than 150 revolutions/min, defoaming due to the stirring effect will be normal. Not done.
また圧送工程時、上記回転治具の回＃ｉ、数は約３０回
転／分が好゛ましり４（］回転を超えるとスラリーが泡
立ちし、スラリー・〜中ヘガスを再混入させる不具合を
生じ、一方２０回転未満て′は本圧送時のスラリー回転
の目的であるスラリーの−に層、ｒ層の偏（）１゛が防
止されなくなる。In addition, during the pressure feeding process, it is preferable that the number of rotations #i of the rotating jig be approximately 30 rotations/minute; if the rotation exceeds 4 rotations, the slurry will foam, causing the problem of re-mixing the gas in the slurry. On the other hand, if the rotation is less than 20 times, the deviation of the - layer and r layer of the slurry, which is the purpose of slurry rotation during main pumping, cannot be prevented.
本発明では脱泡時はスラリーが収容されている容器内は
６０〜７０ｃ＋ｎＨｇの真空に引かれでいるのが好まし
く、またスラリーを次工程に圧送する際には該容器内に
還元性ガス、特に窒素ガスを供給し、て圧送に寄ｒ＋さ
せる。更に又、本発明に用いる回転治具はいかり型のア
ンカー力（好ま１°、く用いられる。In the present invention, it is preferable that the inside of the container containing the slurry be evacuated to a vacuum of 60 to 70 c+nHg during defoaming, and when the slurry is pumped to the next step, reducing gas, especially Supply nitrogen gas and pressurize it. Furthermore, the rotating jig used in the present invention uses an anchor type anchor force (preferably 1°).
５作 用：・
本発明によれば従来と異なり圧送時のスラリーの回転を
脱泡時の同転数を低く抑えているのでスラリーへのガス
の再混入を防井出来、し５かもスラリー内の成分の均一
・慴苓保持することがてきる。5. Effects: - According to the present invention, unlike conventional methods, the rotation speed of the slurry during pumping is kept low during defoaming, so it is possible to prevent gas from re-mixing into the slurry, and 5. It is possible to maintain the uniformity and consistency of the ingredients.
〔実施例：・
以下本発明の実施例を前述の第１図に基づいて膜、明す
ゐ。[Example: - Examples of the present invention will be described below based on the above-mentioned FIG. 1.
まずアルミサ粉末９２００ ｇ、ホウケイ酸ガラス粉宋
９２００ ｇ ｉｓ 、Ｊ：、 ６”石英ガラス粉末９
２００ ｇを原料とし、。First, 9200 g of alumisa powder, 9200 g of borosilicate glass powder, J:, 6” quartz glass powder 9
Using 200 g as raw material.
て用い、公知のボールミルで粉末粒径を均一化し、乾燥
した後、再度ボールミルで混練し各成分を均一・に調整
し、混練スラリーを得た。The powder particle size was made uniform using a known ball mill, and after drying, the mixture was kneaded again using a ball mill to uniformly adjust each component to obtain a kneaded slurry.
得られた混練スラリー２を公知の上記混練脱泡・圧送装
置１の容器１０内に入れ、真空ポンプ３を用いて該容器
１０内を約６５ｃｍＨｇに真空とし、また。The obtained kneaded slurry 2 was put into the container 10 of the above-mentioned known kneading, defoaming and pressure feeding device 1, and the inside of the container 10 was evacuated to about 65 cmHg using the vacuum pump 3.
次にエアモータ５を用いでアンカー６を約１８０回転／
分のとし２スラリーを回転しスラリー内のガスを除去（
脱泡〉させた。この脱泡処理を０．４分間行なった後、
バルブ４ａを閉め、バルブ４ｂを開けて窒素ガスを容器
１０内へ０．４〜０．８ｋｇ／ｃポＱ）圧力で導入し、
圧送に用いた。この圧送時には王アモータ５の回転数を
落としアンカー６を約３０回転／分させた。圧送された
スラリーはバルブ４ｃを介して次工程であるグリーンシ
ート成形装置のスラリーダムへ送られた。Next, use the air motor 5 to rotate the anchor 6 approximately 180 times/
Rotate the slurry for 2 minutes to remove the gas in the slurry (
Defoaming was performed. After performing this defoaming treatment for 0.4 minutes,
Close the valve 4a and open the valve 4b to introduce nitrogen gas into the container 10 at a pressure of 0.4 to 0.8 kg/c,
Used for pressure feeding. During this pressure feeding, the rotational speed of the king motor 5 was lowered and the anchor 6 was rotated at about 30 rotations/minute. The pumped slurry was sent to the slurry dam of the green sheet forming apparatus, which is the next step, via the valve 4c.
以上説明した様１ご本発明によればガスの脱泡が有効に
なされ、しかも粘度が安定され凝集粒も少ない均一な材
質のスラリーを得ることができた。As explained above, according to the present invention, gas can be effectively degassed, and a slurry having a uniform material with stable viscosity and few aggregates can be obtained.
第１図は本発明の方法を実施するためのスラリー用脱泡
・圧送装置の模式図である。
１・・・脱泡・圧送装置、 ２・・・スラリー３・・・
真空ポンプ、
４ａ、４ｂ、４ｃｍ−−バルブ、
５・・・エアモー・夕、 ６・・・アンカー７・
・・冷却部、 １０・・・容器。FIG. 1 is a schematic diagram of a slurry defoaming/pressure feeding device for carrying out the method of the present invention. 1... Defoaming/pressure feeding device, 2... Slurry 3...
Vacuum pump, 4a, 4b, 4cm--Valve, 5... Air motor, 6... Anchor 7.
...cooling section, 10...container.
Claims (1)
ラリーを回転させる回転治具を有する混練スラリーの脱
泡・圧送装置を用いて、該混練スラリーを脱泡・圧送す
る方法において、 前記脱泡時に前記回転治具の回転数を１５０〜２００回
転／分とし、該脱泡後、次工程への圧送時に前記回転治
具の回転数を２０〜４０回転／分とすることを特徴とす
る混練スラリーの脱泡・圧送方法。[Claims] 1. In order to defoam the kneaded slurry, the kneaded slurry is defoamed and pumped using a kneaded slurry defoaming/pumping device having a rotating jig that rotates the kneaded slurry. In the method, the number of revolutions of the rotating jig is set at 150 to 200 revolutions/min during the defoaming, and after the defoaming, the number of revolutions of the rotating jig is set at 20 to 40 revolutions/min during pressure feeding to the next step. A method for defoaming and pressure-feeding a kneaded slurry, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2071881A JP2583336B2 (en) | 1990-03-23 | 1990-03-23 | Defoaming / pressing method of kneaded slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2071881A JP2583336B2 (en) | 1990-03-23 | 1990-03-23 | Defoaming / pressing method of kneaded slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03272807A true JPH03272807A (en) | 1991-12-04 |
| JP2583336B2 JP2583336B2 (en) | 1997-02-19 |
Family
ID=13473311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2071881A Expired - Fee Related JP2583336B2 (en) | 1990-03-23 | 1990-03-23 | Defoaming / pressing method of kneaded slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2583336B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010522631A (en) * | 2007-03-06 | 2010-07-08 | インターグラス テクノロジー エージー | Method for mixing at least one further substance and a liquid and degassing and transporting the mixture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6197102A (en) * | 1984-10-17 | 1986-05-15 | Nippon Sheet Glass Co Ltd | Photooxidation-reduction method |
| JPS61135680A (en) * | 1984-12-06 | 1986-06-23 | ヤマハ発動機株式会社 | Golf car |
| JPS6341518U (en) * | 1986-09-04 | 1988-03-18 |
-
1990
- 1990-03-23 JP JP2071881A patent/JP2583336B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6197102A (en) * | 1984-10-17 | 1986-05-15 | Nippon Sheet Glass Co Ltd | Photooxidation-reduction method |
| JPS61135680A (en) * | 1984-12-06 | 1986-06-23 | ヤマハ発動機株式会社 | Golf car |
| JPS6341518U (en) * | 1986-09-04 | 1988-03-18 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010522631A (en) * | 2007-03-06 | 2010-07-08 | インターグラス テクノロジー エージー | Method for mixing at least one further substance and a liquid and degassing and transporting the mixture |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2583336B2 (en) | 1997-02-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |