JPS63287568A - Classifying method for powdered particles and its apparatus - Google Patents
Classifying method for powdered particles and its apparatusInfo
- Publication number
- JPS63287568A JPS63287568A JP11998287A JP11998287A JPS63287568A JP S63287568 A JPS63287568 A JP S63287568A JP 11998287 A JP11998287 A JP 11998287A JP 11998287 A JP11998287 A JP 11998287A JP S63287568 A JPS63287568 A JP S63287568A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- particles
- powdered particles
- powder particles
- electric field
- 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
- 239000002245 particle Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims description 12
- 230000005684 electric field Effects 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- -1 For example Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 240000008881 Oenanthe javanica Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-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
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- VVOLVFOSOPJKED-UHFFFAOYSA-N copper phthalocyanine Chemical compound [Cu].N=1C2=NC(C3=CC=CC=C33)=NC3=NC(C3=CC=CC=C33)=NC3=NC(C3=CC=CC=C33)=NC3=NC=1C1=CC=CC=C12 VVOLVFOSOPJKED-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 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
- 239000000314 lubricant Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は粉体粒子の分級方法及びその装置に関し、更に
詳しくは電場を利用して種々の粒径の粉体粒子群から粒
径の比較的大きい粉体粒子を高い精度で除去する分級方
法及びその装置に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for classifying powder particles and an apparatus therefor, and more specifically, to a method for classifying powder particles, and more specifically to a method for comparing particle sizes from groups of powder particles of various particle sizes using an electric field. The present invention relates to a classification method and apparatus for removing target-sized powder particles with high precision.
〈従来技術〉
粒径の揃っている粉体粒子を得る方法として、従来から
、重力、遠心力もしくは慣性りを利用した分級、ふるい
分け、或いは機械的な破砕、粉砕を利用する方法等が知
られている。しかし、これら方法による粉体粒子の分級
或いは破砕、粉砕等による均質化では、高々１ミクロン
（μｍ）程度までしか粉体粒子の粒径を揃えることが出
来ず、サブミクロン領域の粒径のものを工業的規模で揃
えることは極めて困難である。<Prior art> As a method for obtaining powder particles with uniform particle size, methods using classification and sieving using gravity, centrifugal force or inertia, or mechanical crushing and pulverization are known. ing. However, with these methods of homogenizing powder particles by classification, crushing, crushing, etc., it is possible to make the particle size of the powder particles uniform only to about 1 micron (μm) at most, and particles with a particle size in the submicron region can only be made uniform. It is extremely difficult to prepare these on an industrial scale.
〈発明の目的〉
本発明者は、このようなサブミクロン領域の粉体粒子の
粒径を工業的規模で揃える手段を開発すべく鋭意検討し
た結果、流体粒子群の電場下での特性に着目し、電場を
利用してサブミクロン領域の粉体粒子の分級を行な）と
、工業的規模で粒径の揃った粉体粒子を得ることのでき
ることを見出し、本発明に到達した。<Purpose of the Invention> As a result of intensive study to develop a means to uniformize the particle size of powder particles in the submicron range on an industrial scale, the present inventor focused on the characteristics of fluid particle groups under an electric field. However, the inventors have discovered that it is possible to obtain powder particles of uniform particle size on an industrial scale by classifying powder particles in the submicron region using an electric field, and have arrived at the present invention.
本発明の目的は、電場を利用して種々の粒径の粉体粒子
群から粒径の比較的大きい粉体粒子を高い精度で除去す
る分級方法及びその装置を提供することにある。An object of the present invention is to provide a classification method and apparatus for removing relatively large powder particles with high precision from a group of powder particles of various particle sizes using an electric field.
〈発明の構成・効果〉
本発明の目的は、本発明によれば、
１、一対以上の陰極要素と陽極要素を内設した容器中に
種々の粒径の粉体粒子からなる粉体粒子群を搬送流体に
分散させた状態で供給し、陰極要素と陽極要素の間に直
流電界または交番電界を印加して所望の粉体粒子を陰極
要素および／または陽極要素の表面またはその周辺に移
動させ、該表面またはその周辺の粉体粒子をその他の粉
体粒子群と別個に分離捕集することを特徴とする粉体粒
子の分級方法、並びに
２、種々の粒径の粉体粒子からなる粉体粒子群を搬送流
体に分散させた状態で分級容器に供給する供給手段を備
え、該分級容器内に設けた一対以上の陰極要素と陽極要
素に印加して直流電界または交番電界を発生さぼる装置
を備え、陰極要素および／または陽極要素の表面または
その周辺におる所望の粉体粒子を捕集する捕集手段を備
え、かつ伯の粉体粒子を捕集する手段を備えたことを特
徴とする粉体粒子の分級装置によって達成される。<Configuration and Effects of the Invention> According to the invention, the objects of the present invention are as follows: 1. A powder particle group consisting of powder particles of various particle sizes in a container containing one or more pairs of cathode elements and anode elements; is supplied in a dispersed state in a carrier fluid, and a direct current or alternating electric field is applied between the cathode element and the anode element to move the desired powder particles to or around the surface of the cathode element and/or the anode element. , a method for classifying powder particles characterized by separating and collecting powder particles on or around the surface of the powder particles separately from other powder particles, and 2. a powder consisting of powder particles of various particle sizes. A device that is equipped with a supply means for supplying body particles dispersed in a carrier fluid to a classification container, and that generates a direct current electric field or an alternating electric field by applying it to a pair or more of a cathode element and an anode element provided in the classification container. , a collecting means for collecting desired powder particles on or around the surface of the cathode element and/or the anode element, and a means for collecting the desired powder particles. This is achieved by means of a powder particle classification device.
本発明における分級は、粉体粒子群中の個々の粒子のも
つ電気的特性を利用する。すなわち、粉体粒子はその表
面に固有の電荷を持ってあり、或いは摩擦などの静電帯
電によってその表面に固有の電荷をもたせることができ
、このようなその表面に電荷をもった粉体粒子群を電界
下に置くと粒子の大きざによって陰極側または陽極側に
移動する速度が異なるから、この速度差を利用して分級
する。そして、この粒子の移動速度は外部から印加する
電界の大きさによって変えることができる。Classification in the present invention utilizes the electrical characteristics of individual particles in a group of powder particles. In other words, powder particles have a unique charge on their surface, or can be made to have a unique charge on their surface by electrostatic charging such as friction, and powder particles with a charge on their surface When a group of particles is placed under an electric field, the speed at which the particles move toward the cathode or anode differs depending on their size, so this speed difference is used to classify the particles. The moving speed of the particles can be changed by changing the magnitude of the electric field applied from the outside.
従って、外部から印加する電界の大きざを調節すること
で、分級点（分級する粒子の大きさ）を調節することが
可能である。Therefore, by adjusting the magnitude of the electric field applied from the outside, it is possible to adjust the classification point (size of particles to be classified).
本発明に用いる粉体粒子群とは、無機粉体、有機粉体の
いずれでおってもよい。無機粉体としては、例えばアル
ミニウム粉、亜鉛粉、銅粉、金粉。The powder particles used in the present invention may be either inorganic powder or organic powder. Examples of inorganic powders include aluminum powder, zinc powder, copper powder, and gold powder.
スズ粉、銀粉、ニッケル粉、鉄粉、チタン粉、力オリテ
ィ１−．カオリン、ハロイ１ナイト、セリ１ナイト、ゼ
オライ１〜．カルシウムベントティ１〜．シラス、シラ
スバルーン、マグネシア、アルミナ、フライアッシュ、
アセチレンブラック、酸化鉄、酸化マグネシウム、フェ
ライト、バリウムフェライト、１美酸ストロンチウム、
カーボンブラック、Ｍ化チタン、窒化チタン、炭酸カル
シウム、水酸化カルシウム、コバルト青、銅フタロシア
ニンブルーなどがめげられる。また有機粉体としては、
例えばナイロン粉体、アクリル粉体、エポキシ粉体。Tin powder, silver powder, nickel powder, iron powder, titanium powder, strength 1-. Kaolin, Halloy 1 night, Seri 1 night, Zeolai 1~. Calcium bento tea 1~. Shirasu, Shirasu balloon, magnesia, alumina, fly ash,
Acetylene black, iron oxide, magnesium oxide, ferrite, barium ferrite, strontium 1 acid,
Examples include carbon black, titanium Mide, titanium nitride, calcium carbonate, calcium hydroxide, cobalt blue, and copper phthalocyanine blue. In addition, as organic powder,
For example, nylon powder, acrylic powder, epoxy powder.
ポリエステル粉体、ポリエチレン粉体、ビニリデンフル
オライド樹脂粉体などが必げられる。これら粉体粒子は
搬送流体と混合する前、あるいは混合時、あるいは混合
後に摩Ｉ察などにより帯電さけることは一向にさしつか
えない。Polyester powder, polyethylene powder, vinylidene fluoride resin powder, etc. are required. There is absolutely no problem in preventing these powder particles from being electrically charged by rubbing or the like before, during, or after mixing with the carrier fluid.
この粉体粒子群は平均粒径て５μ以下のもの、更には０
．０１〜５μのものが好ましい。この平均粒径は、分級
後の流体粒子群の平均粒径から選択するのが望ましい。This powder particle group has an average particle size of 5μ or less, and even 0.
．． 01 to 5μ is preferable. This average particle size is desirably selected from the average particle size of the fluid particle group after classification.
本発明に用いる搬送流体としては、例えば空気。As the carrier fluid used in the present invention, for example, air is used.
窒素ガス、アルゴンガス、炭酸ガスなどの気体、例えば
水、低級アルコール、多価アルコールなどの液体があげ
られる。Examples include gases such as nitrogen gas, argon gas, and carbon dioxide gas, and liquids such as water, lower alcohols, and polyhydric alcohols.
本発明において粉体粒子群と搬送流体との割合は、搬送
流体が液体の場合には該粉体粒子群の温度が２０重量％
以下となる割合が好ましく、また搬送流体が気体の場合
には該粉体粒子群が５００Ｍ Ｎ・ｍ３以下となる割合
が好ましい。In the present invention, the ratio of the powder particles to the carrier fluid is such that when the carrier fluid is a liquid, the temperature of the powder particles is 20% by weight.
The proportion below is preferable, and when the carrier fluid is a gas, the proportion of the powder particles is preferably 500 M N·m 3 or less.
本発明における一対以上の陰極要素と陽極要素は、良好
な電気伝導性を示すもので必ればその素材は何でもよい
が、具体的には金属材料であることが好ましい。陰極要
素と陽極要素の大きざ、形状等は分級しようとする粉体
粒子の種類１粒径に応じて変更りることができる。The pair or more of the cathode element and the anode element in the present invention may be made of any material as long as it exhibits good electrical conductivity, but specifically metal materials are preferred. The size, shape, etc. of the cathode element and the anode element can be changed depending on the type and particle diameter of the powder particles to be classified.
本発明にあける粉体粒子群と搬送流体の供給手段９分級
俊の粉体の捕集手段、直流電界または交番電界の発生装
置等は従来から公知のものを用いることができる。Means for Supplying Powder Particles and Carrier Fluid According to the Present Invention Conventionally known devices can be used as the means for collecting powder, the device for generating a direct current electric field or an alternating electric field, and the like.
以下、図面に基いて分級方法及びその装置について説明
する。The classification method and apparatus will be explained below based on the drawings.
図において、１は分級装置の本体である分級容器、２は
陰極要素、３は陽極要素、４は攪拌翼。In the figure, 1 is a classification container which is the main body of the classification device, 2 is a cathode element, 3 is an anode element, and 4 is a stirring blade.
５．５“は吸引管、６は電界発生装置、７．８は吸引設
備に連結している捕集器、９は捕集器、１０は供給手段
、１１は攪拌駆動設備、そして１２．１３は導線殊に絶
縁導線である。分級容器１内には攪拌翼４が設けられ、
骸晶４は攪拌駆動設備によって駆動回転する。粉体粒子
群は搬送流体に混合９分散された状態で供給手段１０か
ら分級容器１に所定量供給されるが、この粒子群の供給
口は容器１の上部に設けられている。陰極要素２及び陽
極要素３はそれぞれ例えば中空円筒状の白金でおり、こ
の中空円筒部は上記供給口より下側になるように設けら
れる。そして、これら要素２．３は導線１２、１３によ
って電界発生装置６に接続されている。5.5" is a suction pipe, 6 is an electric field generator, 7.8 is a collector connected to the suction equipment, 9 is a collector, 10 is a supply means, 11 is a stirring drive equipment, and 12.13 is a conducting wire, especially an insulated conducting wire.A stirring blade 4 is provided in the classification vessel 1,
The skeleton crystal 4 is driven and rotated by stirring drive equipment. A predetermined amount of the powder particles are supplied from the supply means 10 to the classification container 1 in a state where they are mixed and dispersed in a carrier fluid, and a supply port for this particle group is provided at the upper part of the container 1. The cathode element 2 and the anode element 3 are each made of, for example, hollow cylindrical platinum, and the hollow cylindrical portion is provided below the supply port. These elements 2.3 are then connected to the electric field generator 6 by conductors 12, 13.
陰極要素２及び陽極要素３の中空円筒部上端は吸引管５
，５°の下端と接触ないし接着している。The upper ends of the hollow cylindrical portions of the cathode element 2 and the anode element 3 are suction pipes 5
, is in contact with or adheres to the lower end of 5°.
吸引管５，５°の上端は分級容器１の外側に導かれ、捕
集器７，８に連結されている。吸引管５゜５°と要素２
．３とは絶縁されている。供給手段１０から供給された
搬送流体に混合２分散された状態での粉体粒子群はその
レベルが陰極要素２または陽極要素３の下端、好ましく
は上端より上側でかつ供給口より下側になるように供給
される。その際、供給された混合物を攪拌することが好
ましいが、場合によっては攪拌しなくても良い。そして
陰極要素２と陽極要素３の間に電界発生装置６によって
直流電界または交番電界を印加すると、個々の粒子の電
気特性の違いによって、換言すると粒径の大きい粒子は
ど早く陰極要素２及び／又は陽極要素３の表面に付着ま
たはその周辺に移動してくる。この表面またはその周辺
の粒子を吸引管５，５°を介して捕集器７または捕集器
８に捕集すると、比較的大ぎい粒径の粉体粒子を分別す
ることができる。印加電界は電極要素間の単位間隔（ｃ
ｍ）当り１００ＯＶ以下とするのが好ましい。更には５
００Ｖ／ｃｍ以下の印加電界とするのが好ましい。The upper ends of the suction tubes 5 and 5° are guided to the outside of the classification container 1 and connected to collectors 7 and 8. Suction tube 5°5° and element 2
．． 3 is insulated. The powder particles mixed and dispersed in the carrier fluid supplied from the supply means 10 are at a level above the lower end of the cathode element 2 or the anode element 3, preferably above the upper end and below the supply port. Supplied as follows. At that time, it is preferable to stir the supplied mixture, but depending on the case, stirring may not be necessary. Then, when a DC electric field or an alternating electric field is applied between the cathode element 2 and the anode element 3 by the electric field generator 6, due to the difference in the electrical characteristics of individual particles, in other words, particles with a large particle size will quickly move between the cathode element 2 and/or Or, it adheres to the surface of the anode element 3 or moves around it. If particles on or around this surface are collected in the collector 7 or 8 through the suction tubes 5 and 5°, powder particles with relatively large diameters can be separated. The applied electric field is equal to the unit spacing between electrode elements (c
m) is preferably 100 OV or less. Furthermore, 5
It is preferable to set the applied electric field to 00 V/cm or less.
吸引管５，５゛から吸引された残り、換言すれば分級操
作後に容器１に残った粉体粒子群は粒径の揃った、均質
な粒子群である。このものは、分級容器１の底部から取
出されて捕集器９に移され、その後所望の用途に供され
る。The residue sucked from the suction tubes 5, 5'', in other words, the powder particles remaining in the container 1 after the classification operation are homogeneous particles with uniform particle sizes. This material is taken out from the bottom of the classification container 1, transferred to the collector 9, and then used for a desired purpose.
本発明によればザブミクロン領域の粉体粒子群を精度よ
く分級して得ることができる。分級された粉体粒子は粒
径が揃っており、また極めて均質であるという特徴を有
する。本発明は、特にファインセラミックスに用いられ
る粉体粒子（例えばケイ素化合物粉体等）、磁気記録媒
体に用いられる磁性粉、このベースフィルムに用いられ
る滑剤。According to the present invention, powder particles in the submicron range can be classified and obtained with high accuracy. The classified powder particles are characterized by having uniform particle sizes and being extremely homogeneous. The present invention particularly relates to powder particles used in fine ceramics (for example, silicon compound powder, etc.), magnetic powder used in magnetic recording media, and lubricants used in these base films.
トナー等の分級、均質化に有用でおる。It is useful for classifying and homogenizing toner, etc.
〈実施例〉 以下、実施例を掲げて本発明を更に説明する。<Example> The present invention will be further explained below with reference to Examples.
実施例１
粒径１．０μｍ以上の粒子を全体の３８車量％含んでな
る含水ケイ酸粒子を搬送流体としての水と混合して分散
せしめ、この分散液を、その内部に陰極要素２および陽
極要素３としてともに内径１５ｍｍ。Example 1 Hydrous silicic acid particles containing 38% of the total particle size of particles with a particle size of 1.0 μm or more are mixed and dispersed with water as a carrier fluid, and this dispersion is contained inside the cathode element 2 and Both anode elements 3 have an inner diameter of 15 mm.
外径１６ｍｍ、長さ２０ｍｍの中空円筒状の白金を用い
かつこれらを中心間距離７０ｍｍで設置した分級容器１
に供給し、これら要素間に５００Ｖの直流電界を２時間
印加した。この印加操作によって粒径の大きい粒子が陽
極要素の表面に付着した。この印加操作後、分級容器１
の底部から分散液を取出した。このものの中には粒径が
１μｍ以上の粒子は認められず、サブミクロン粒径のも
ののみを分級できた。Classifying container 1 made of hollow cylindrical platinum with an outer diameter of 16 mm and a length of 20 mm and installed with a center-to-center distance of 70 mm.
A DC electric field of 500 V was applied between these elements for 2 hours. This application operation caused particles with large particle sizes to adhere to the surface of the anode element. After this application operation, the classification container 1
The dispersion liquid was taken out from the bottom of the container. No particles with a particle size of 1 μm or more were found in this material, and only submicron particle sizes could be classified.
比較例１
実施例１で用いたのと同じ分散液を内鑵型デカンタ−に
より分級したところ、１μｍ以上の粒径のものを３０重
量％までしか減少することができなかった。Comparative Example 1 When the same dispersion as used in Example 1 was classified using a chisel type decanter, particles with a particle size of 1 μm or more could be reduced to only 30% by weight.
図は、本発明の分級装置の１例を示す概略図である。 手続補正書 昭和６２年７ 月２７日 The figure is a schematic diagram showing an example of the classification device of the present invention. Procedural amendment July 27, 1988
Claims (1)
種々の粒径の粉体粒子からなる粉体粒子群を搬送流体に
分散させた状態で供給し、陰極要素と陽極要素の間に直
流電界または交番電界を印加して所望の粉体粒子を陰極
要素および／または陽極要素の表面またはその周辺に移
動させ、該表面またはその周辺の粉体粒子をその他の粉
体粒子群と別個に分離捕集することを特徴とする粉体粒
子の分級方法。 ２、種々の粒径の粉体粒子からなる粉体粒子群を搬送流
体に分散させた状態で分級容器に供給する供給手段を備
え、該分級容器内に設けた一対以上の陰極要素と陽極要
素に印加して直流電界または交番電界を発生させる装置
を備え、陰極要素および／または陽極要素の表面または
その周辺にある所望の粉体粒子を捕集する捕集手段を備
え、かつ他の粉体粒子を捕集する手段を備えたことを特
徴とする粉体粒子の分級装置。[Claims] 1. A powder particle group consisting of powder particles of various particle sizes is supplied in a state dispersed in a carrier fluid into a container containing one or more pairs of cathode elements and anode elements, and the cathode A direct current or alternating electric field is applied between the element and the anode element to move the desired powder particles to or around the surface of the cathode element and/or the anode element, and to move the powder particles at or around the surface of the cathode element and/or the anode element to other A method for classifying powder particles, characterized by separating and collecting them separately from a group of powder particles. 2. A supply means for supplying a powder particle group consisting of powder particles of various particle sizes to a classification container in a state in which they are dispersed in a carrier fluid, and one or more pairs of cathode elements and anode elements provided in the classification container. a means for collecting desired powder particles on or around the surface of the cathode element and/or the anode element; A powder particle classification device characterized by comprising means for collecting particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11998287A JPS63287568A (en) | 1987-05-19 | 1987-05-19 | Classifying method for powdered particles and its apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11998287A JPS63287568A (en) | 1987-05-19 | 1987-05-19 | Classifying method for powdered particles and its apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63287568A true JPS63287568A (en) | 1988-11-24 |
Family
ID=14774980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11998287A Pending JPS63287568A (en) | 1987-05-19 | 1987-05-19 | Classifying method for powdered particles and its apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63287568A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0398949U (en) * | 1990-01-31 | 1991-10-15 | ||
| JP2012521866A (en) * | 2009-03-27 | 2012-09-20 | エーペーエール２ | Method for electrostatic separation of fine-grained mixtures made of various materials and apparatus for carrying out this method |
-
1987
- 1987-05-19 JP JP11998287A patent/JPS63287568A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0398949U (en) * | 1990-01-31 | 1991-10-15 | ||
| JP2012521866A (en) * | 2009-03-27 | 2012-09-20 | エーペーエール２ | Method for electrostatic separation of fine-grained mixtures made of various materials and apparatus for carrying out this method |
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