JPH0466118A - Manufacture of fine particle - Google Patents
Manufacture of fine particleInfo
- Publication number
- JPH0466118A JPH0466118A JP17892690A JP17892690A JPH0466118A JP H0466118 A JPH0466118 A JP H0466118A JP 17892690 A JP17892690 A JP 17892690A JP 17892690 A JP17892690 A JP 17892690A JP H0466118 A JPH0466118 A JP H0466118A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- fine particles
- vessels
- porous plate
- porous
- 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
- 239000010419 fine particle Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 27
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000001962 electrophoresis Methods 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- XXUXXCZCUGIGPP-ACAGNQJTSA-N 2-Hydroxy-3,5-dinitro-N-[(1Z)-(5-nitrofuran-2-yl)methylidene]benzene-1-carbohydrazonic acid Chemical compound C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C(O)=C1C(=O)N\N=C/C1=CC=C([N+]([O-])=O)O1 XXUXXCZCUGIGPP-ACAGNQJTSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910003087 TiOx Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、セラミック産業に利用される微粒子の製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing fine particles used in the ceramic industry.
［従来の技術］
従来から、酸化物の微粒子を製造する方法として、コス
ト、大量生産性、超微粒子化などの面から湿式共沈法が
多用されている。[Prior Art] Conventionally, a wet coprecipitation method has been widely used as a method for producing oxide fine particles from the viewpoints of cost, mass productivity, ultrafine particle formation, etc.
上記従来技術には、微粒子の粒径がまばらであって特定
の粒径以下（特に１ｌｔｌｌ以下）の微粒子を選択的に
取り出すことが困難であるとともに、微粒子を乾燥させ
ると凝集粉が形成されることから製造後、新たに凝集粉
を粉砕したり除去したりする工程が必要となる、という
問題がある。In the above conventional technology, the particle size of the fine particles is sparse, and it is difficult to selectively take out fine particles with a specific particle size or less (particularly 1 ltll or less), and when the fine particles are dried, agglomerated powder is formed. Therefore, there is a problem in that, after production, a new step of pulverizing or removing the aggregated powder is required.
本発明は以上の点に鑑み、特定の粒径以下の小さな微粒
子を容易に製造する方法を提供するものである。In view of the above points, the present invention provides a method for easily producing small particles having a specific particle size or less.
上記課題を解決するため、本発明に係る微粒子の製造方
法は、ボールミルによる微粒子の粉砕工程と、多孔質板
または多孔質膜による微粒子の分別工程とを同時に行な
うことを特徴とする。In order to solve the above problems, the method for producing fine particles according to the present invention is characterized in that a step of pulverizing the fine particles using a ball mill and a step of separating the fine particles using a porous plate or a porous membrane are performed simultaneously.
微粒子の素材である粒子を大量処理が可能なボールミル
によって粉砕し、該粉砕工程の中途で多孔質板または多
孔質膜を通過するか否かによって特定の粒径以下の微粒
子を分別する。Particles, which are the material of the fine particles, are crushed by a ball mill capable of mass processing, and in the middle of the crushing process, fine particles having a specific particle size or less are separated depending on whether they pass through a porous plate or a porous membrane.
多孔質板または多孔質膜にはその材質としてセラミック
、金属または高分子を用い、必要とされる粒径と同等の
孔径なもつものを選択使用する。The material for the porous plate or porous membrane is ceramic, metal, or polymer, and a material with a pore size equivalent to the required particle size is selected.
孔径は約０．Ｏ１〜数ｌＯμｍである。多孔質板または
多孔質膜はボールミルに使用されるボールと同等かそれ
以上の硬度をもつものであることが好ましいが、脆弱な
材質である場合にも該多孔質板または多孔質膜の両側に
ＳＵＳなどの強度に優れた材質であってボールより小さ
い径の孔を穿ったものを支持板として用いれば良い。ボ
ールはアルミナ、ＳＯＳ％５Ｌ３Ｎ４ 、メノウなどで
ある。The pore diameter is approximately 0. It is O1 to several lOμm. It is preferable that the porous plate or porous membrane has a hardness equal to or higher than that of the balls used in a ball mill, but even if it is made of a brittle material, there is a hardness on both sides of the porous plate or porous membrane. The support plate may be made of a material with excellent strength, such as SUS, and has holes smaller in diameter than the balls. The balls are made of alumina, SOS%5L3N4, agate, etc.
粒子の移動にはコロイド分散系に特有なゼータ電位を利
用して粒子を電気泳動させる。印加する電圧は直流で１
００Ｖ以下で充分である。また解膠剤として無機系のバ
インダ、有機系のバインダおよび活性剤を使用すると効
果的である。また溶媒は水、有機溶媒の何れでも良く、
目的に合わせて選択使用する。To move the particles, the zeta potential, which is unique to colloidal dispersion systems, is used to electrophores the particles. The applied voltage is DC 1
00V or less is sufficient. Furthermore, it is effective to use an inorganic binder, an organic binder, and an activator as the deflocculant. The solvent may be water or an organic solvent,
Select and use according to the purpose.
本発明の対象とされる金属駿化物としてはＡｌ＊Ｏｓ
、Ｔｉ０ｉ、Ｚｒ０ａ、ＣｕＯ、ＭｇＯ、５ｎＯｚ、各
種フェライト類（Ｆｅ１Ｏ４、Ｎ１Ｆｅａ０４、Ｂａフ
ェライト） 、ＢａＴｉＯｘ、５ｉＴｉＯｓ、ＰｂＴｉ
０．などと、これらの混合物を挙げることができる。The metal sulfuride targeted by the present invention is Al*Os.
, Ti0i, Zr0a, CuO, MgO, 5nOz, various ferrites (Fe1O4, N1Fea04, Ba ferrite), BaTiOx, 5iTiOs, PbTi
0. and mixtures thereof.
つぎに本発明の詳細な説明すると、図面は微粒子粉砕分
別装置の概略を示している。Next, to explain the present invention in detail, the drawings schematically show a fine particle crushing and sorting device.
１対の容器（１）（１）の端部に蓋（２） （２）が被
せられ、容器（１） （１）の間に多孔質板（３）が挟
設されている。（４）は電源、（５）は−極、（６）は
土掻、（７） （７）は仕切板、（８）・・・・・はシ
ール、（９） （９）は固定ねじであって、この容器（
１）の内部に溶媒（ｌＯ）、ボール（１１）、粒子（１
２）を収容して電圧を印加する。多孔質板（３）は平均
孔径１−のアルミナであって、ボール（１１）はφ５の
アルミナを多数入れである。容器（１）の内容積は５０
０ ＠Ｒである。市販のＴｉＯｘ （平均粒径５ ｐｒ
ｙ ） （１２）ｌＯｇを水（ＰＨ７）（１０） ２０
０−とともに右側の容器（１）に入れ、２０Ｖの直流電
圧を印加する。ＴｉＯ□は水中では表面が負に滞電して
おり、Ｔｉｏｚ粒子（１２）は図上右から左へ移動し、
多孔質板（３）で粒径が分別されてｌ ｐｍの孔を通過
し得る微粒子（１２°）だけが左側の容器（１）へ移動
してボール（１１）による粉砕を続けられる。１週間の
処理後、左側の容器（１）へ移動した微粒子（１２°）
を取り出したところ、約３ｇ、平均粒径０．３ｐｍのＴ
ｉＯ微粒子（１２°）を分別することができ、得られた
微粒子（１２°）に１μｍ以上の大きなものや凝集粉は
確認されなかった。The ends of a pair of containers (1) (1) are covered with lids (2) (2), and a porous plate (3) is sandwiched between the containers (1) (1). (4) is the power supply, (5) is the negative pole, (6) is the soil scraper, (7) (7) is the partition plate, (8)... is the seal, (9) (9) is the fixing screw And this container (
1) contains the solvent (lO), the ball (11), and the particle (1).
2) is accommodated and voltage is applied. The porous plate (3) is made of alumina with an average pore diameter of 1-, and the balls (11) are made of alumina with a diameter of φ5. The internal volume of container (1) is 50
0 @R. Commercially available TiOx (average particle size 5 pr
y) (12) lOg of water (PH7) (10) 20
0- in the container (1) on the right, and apply a DC voltage of 20V. The surface of TiO□ is negatively charged in water, and the Tioz particle (12) moves from right to left in the figure.
The particle size is separated by the porous plate (3), and only the fine particles (12°) that can pass through the 1 pm holes are moved to the container (1) on the left and continue to be pulverized by the balls (11). After one week of treatment, fine particles moved to the left container (1) (12°)
When taken out, about 3g of T with an average particle size of 0.3pm was found.
The iO fine particles (12°) could be separated, and no particles larger than 1 μm or agglomerated powder were found in the fine particles (12°) obtained.
本願発明者らは、これと並行して比較例の実験を行なっ
ている。すなわち、上記実施例で用いた素材（ＴｉＯ２
）を同じ条件で先行してボールミルのみ行ない、その後
、電場をかけて微粒子を分別したところ（１週間ボール
ミル、１日電気泳動）、得られた微粒子は約１．２ ｇ
、平均粒径０．５μｍであった。In parallel with this, the inventors of the present application are conducting experiments on comparative examples. That is, the material used in the above example (TiO2
) was first subjected to ball milling under the same conditions, and then an electric field was applied to separate the fine particles (ball milling for one week, electrophoresis for one day).The fine particles obtained were approximately 1.2 g.
, the average particle size was 0.5 μm.
〔発明の効果］
本発明の微粒子の製造方法は以上説明したように、ボー
ルミルによる微粒子の粉砕工程と、多孔質板または多孔
質膜による微粒子の分割工程とを同時に行なうことを特
徴とするものであって、特定の粒径以下の小さな微粒子
を効率良（得ることができる。[Effects of the Invention] As explained above, the method for producing fine particles of the present invention is characterized in that the step of crushing the fine particles using a ball mill and the step of dividing the fine particles using a porous plate or a porous membrane are performed simultaneously. Therefore, small particles with a specific particle size or less can be obtained efficiently.
図面は本発明の実施例に使用する微粒子粉砕分別装置の
概略的な断面図である。
（１）容器 （２）蓋 （３）多孔質板（４）電源
（５） （６）電極 （７）仕切板（８）シール
（９）固定ねじ （１０）溶媒（１１）ボール
（１２）粒子 （１２°）微粒子〃ル貰板The drawing is a schematic cross-sectional view of a fine particle crushing and sorting device used in an embodiment of the present invention. (1) Container (2) Lid (3) Porous plate (4) Power source (5) (6) Electrode (7) Partition plate (8) Seal (9) Fixing screw (10) Solvent (11) Ball
(12) Particles (12°) Fine particles
Claims (1)
たは多孔質膜による微粒子の分別工程とを同時に行なう
ことを特徴とする微粒子の製造方法。1. A method for producing fine particles, which comprises simultaneously carrying out the step of pulverizing the fine particles using a ball mill and the step of separating the fine particles using a porous plate or a porous membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17892690A JPH0466118A (en) | 1990-07-06 | 1990-07-06 | Manufacture of fine particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17892690A JPH0466118A (en) | 1990-07-06 | 1990-07-06 | Manufacture of fine particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0466118A true JPH0466118A (en) | 1992-03-02 |
Family
ID=16057059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17892690A Pending JPH0466118A (en) | 1990-07-06 | 1990-07-06 | Manufacture of fine particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0466118A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT412091B (en) * | 2001-06-01 | 2004-09-27 | Saint Gobain Ceramics | METHOD FOR GRINDING ALPHA ALUMINUM OXIDE IN A BALL MILL BY MEANS OF ALPHA ALUMINUM OXIDE PARTICLES AS A GRINDING BODY |
| KR100470444B1 (en) * | 2000-07-20 | 2005-02-07 | 조극래 | Manufacturing process and an apparatus for nonstoichiometric compounds of titanium, metal or nonferrous metal |
-
1990
- 1990-07-06 JP JP17892690A patent/JPH0466118A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100470444B1 (en) * | 2000-07-20 | 2005-02-07 | 조극래 | Manufacturing process and an apparatus for nonstoichiometric compounds of titanium, metal or nonferrous metal |
| AT412091B (en) * | 2001-06-01 | 2004-09-27 | Saint Gobain Ceramics | METHOD FOR GRINDING ALPHA ALUMINUM OXIDE IN A BALL MILL BY MEANS OF ALPHA ALUMINUM OXIDE PARTICLES AS A GRINDING BODY |
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