JPS6127106B2 - - Google Patents
Info
- Publication number
- JPS6127106B2 JPS6127106B2 JP55156892A JP15689280A JPS6127106B2 JP S6127106 B2 JPS6127106 B2 JP S6127106B2 JP 55156892 A JP55156892 A JP 55156892A JP 15689280 A JP15689280 A JP 15689280A JP S6127106 B2 JPS6127106 B2 JP S6127106B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic fluid
- fluid
- concentrating
- gravity
- 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.)
- Expired
Links
- 239000011553 magnetic fluid Substances 0.000 claims description 26
- 230000005291 magnetic effect Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 239000006249 magnetic particle Substances 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 7
- 239000011554 ferrofluid Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims 1
- 239000002612 dispersion medium Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 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
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/445—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a compound, e.g. Fe3O4
Description
【発明の詳細な説明】
本発明は効率的で低コストの磁性流体の濃縮方
法および濃縮装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an efficient and low cost method and apparatus for concentrating ferrofluids.
磁性流体は第１図に示すように、強磁性体材料
を界面活性剤で被覆た磁性粒子４が、液状の分散
媒３中に浮遊している超常磁性を示す液体２であ
る。 As shown in FIG. 1, the magnetic fluid is a superparamagnetic liquid 2 in which magnetic particles 4 made of a ferromagnetic material coated with a surfactant are suspended in a liquid dispersion medium 3.
これは強磁性体を粉砕して磁性粒子を得る粉砕
法と、鉄、亜鉛、マンガン、コバルト、ニツケル
等の金属塩水溶液から化学反応で磁性粒子を得る
湿式法などで製造されるが、磁性粒子体積濃度
（以下PVCと云う）で30〜40％のものが得られ
る。 This is manufactured by a pulverization method in which magnetic particles are obtained by pulverizing a ferromagnetic material, and a wet method in which magnetic particles are obtained through a chemical reaction from an aqueous solution of metal salts such as iron, zinc, manganese, cobalt, and nickel. A volume concentration (hereinafter referred to as PVC) of 30 to 40% can be obtained.
これを飽和磁化のより高い高濃度にするため
に、第２図のような容器１中の磁性流体２を加熱
する分散媒蒸発法、あるいは第３図のような密度
差を利用する重力法又は磁力法が用いられてい
た。 In order to achieve a higher concentration of saturation magnetization, a dispersion medium evaporation method that heats the magnetic fluid 2 in a container 1 as shown in Figure 2, a gravity method that utilizes the density difference as shown in Figure 3, or The magnetic method was used.
本願の発明はこれらよりすぐれた新規な磁性流
体の濃縮方法および濃縮装置を提供するものであ
る。 The present invention provides a novel method and device for concentrating a magnetic fluid that is superior to these.
その原理は磁性流体中の磁性粒子に重力と逆方
向の磁気力を作用させ、磁性粒子を磁気で抽出す
る方法であり、磁性粒子の濃度拡散の影響を少な
くして、より簡便に磁性流体を濃縮するものであ
る。以下実施例により本願を詳述する。 The principle is to apply a magnetic force in the opposite direction to gravity to the magnetic particles in the magnetic fluid, and extract the magnetic particles magnetically.This method reduces the influence of concentration diffusion of the magnetic particles, making it easier to extract the magnetic fluid. It concentrates. The present application will be explained in detail with reference to Examples below.
実施例 １
第４図に示すごとく、厚さ３mm、長さ50mm、巾
10mmのゴム磁石５を厚さ方向に表面磁束密度を約
100ガウスに着磁させ、これを懸垂する。この磁
石に約100Å径のマグネタイトがPVCで約40％含
有されたパラフインペースオイル系の磁性流体２
を(a)のように付着させる。Example 1 As shown in Figure 4, the thickness is 3 mm, the length is 50 mm, and the width is
Approximate surface magnetic flux density of 10mm rubber magnet 5 in thickness direction
Magnetize it to 100 Gauss and suspend it. This magnet contains about 40% PVC magnetite with a diameter of about 100 Å, which is a paraffin paste oil-based magnetic fluid 2.
Attach it as shown in (a).
この状態で２時間放置すると(b)のように磁性流
体２は濃縮され、磁性流体２のうち希薄となつた
部分は磁化力の減少とともに落下する。さらに２
時間放置すると(c)のようになり、濃縮された磁性
流体２がゴム磁石５の表面に残る。(b)，(c)に残つ
ている磁性流体２の濃度を密度測定法で求めたと
ころ、最初(a)でPVC約40％であつたものが、50
％，58％まで濃縮された。 When left in this state for 2 hours, the magnetic fluid 2 becomes concentrated as shown in (b), and the diluted portion of the magnetic fluid 2 falls as the magnetizing force decreases. 2 more
When left for a period of time, it becomes as shown in (c), and the concentrated magnetic fluid 2 remains on the surface of the rubber magnet 5. When the concentration of magnetic fluid 2 remaining in (b) and (c) was determined by density measurement, it was found that the concentration of PVC, which was initially about 40% in (a), was 50% PVC.
%, concentrated to 58%.
実施例 ２
第５図に示すように約200mlの容器１中にPVC
が約30％の磁性流体を満たし、その中に実施例１
と同様な長さ150mmのゴム磁石を浸し、その先端
位置を上下させるとサイホンと同様に磁性流体が
流出する。ゴム磁石の先端位置を流量が約0.01
ml／分程度となるように調節すると、容器１′中
にPVCが約45％まで濃縮された磁性流体２′が得
られた。Example 2 As shown in Figure 5, a PVC container 1 of approximately 200 ml was
is filled with about 30% ferrofluid, and Example 1 is contained in it.
If you dip a rubber magnet with a length of 150 mm similar to the above and move its tip up and down, the magnetic fluid will flow out, similar to a siphon. The tip position of the rubber magnet is adjusted so that the flow rate is approximately 0.01.
When adjusted to about ml/min, a magnetic fluid 2' containing PVC concentrated to about 45% was obtained in the container 1'.
実施例 ３
第６図のように、約300ml容器１中にPVCが約
35％の磁性流体２を満たし、その中に図示のよう
なコイル７付きの棒状軟鋼６を浸し、コイルを60
Hz10V5Aで励振すると図示のように磁性流体２が
隆起する。この降起先端に非磁性のアルミニウム
製の樋８を接合させると、PVC50％に濃縮され
た磁性流体２′を容器１′中に得ることができた。Example 3 As shown in Figure 6, approximately 300ml container 1 contains approximately 300ml of PVC.
Fill with 35% magnetic fluid 2, immerse a rod-shaped mild steel 6 with a coil 7 as shown in it, and set the coil to 60%.
When excited at Hz10V5A, the magnetic fluid 2 rises as shown in the figure. By joining a non-magnetic aluminum gutter 8 to this descending tip, a magnetic fluid 2' concentrated to 50% PVC could be obtained in the container 1'.
以上実施例１〜３で明らかなように、本発明の
方法は磁性粒子に重力と逆方向の磁気力を作用さ
せ、一方分散媒にはもつぱら重力が働くことによ
る抽出効果を利用するものであり、従来法のよう
な、分散媒揮発用の多大な熱エネルギー、あるい
は濃度拡散の障害もなく、効率的に磁性流体を濃
縮出来るものである。 As is clear from Examples 1 to 3 above, the method of the present invention applies a magnetic force in the opposite direction to gravity to the magnetic particles, while utilizing the extraction effect caused by gravity acting exclusively on the dispersion medium. This method allows the magnetic fluid to be efficiently concentrated without requiring a large amount of thermal energy to volatilize the dispersion medium or hindering concentration diffusion, which is the case with conventional methods.
さらに濃縮を促進する方法としては重力を遠心
力によつて高めた状態で、本発明にもとづいて磁
気抽出すると良い。また、本発明による濃縮装置
は、可動部分がないので、信頼性も高く、かつ低
コスト化ができる。なお磁気源は永久磁石、電磁
石いずれでも良いが、電磁石を用いると磁力調整
が容易であり、なかでも交流励振の場合は、磁性
流体も振動し、より効果的に濃縮可能である。 As a method for further promoting concentration, it is preferable to perform magnetic extraction based on the present invention in a state where gravity is increased by centrifugal force. Furthermore, since the concentrating device according to the present invention has no moving parts, it is highly reliable and can be manufactured at low cost. Note that the magnetic source may be either a permanent magnet or an electromagnet, but when an electromagnet is used, the magnetic force can be easily adjusted, and in particular, in the case of AC excitation, the magnetic fluid also vibrates, making it possible to concentrate more effectively.
第１図は一般的な磁性流体の状態を示す正面
図、第２図、第３図は従来の濃縮法を示す正面
図、第４図は本発明の原理的な構成を示す第１の
実施例装置、第５図は永久磁石を用いた濃装装置
の実施例、第６図は電磁石を用いた濃縮装置の実
施例をそれぞれ示す正面図である。
２……磁性流体、５……ゴム磁石。
FIG. 1 is a front view showing the state of a general magnetic fluid, FIGS. 2 and 3 are front views showing a conventional concentration method, and FIG. 4 is a first implementation showing the basic configuration of the present invention. An example device, FIG. 5 is a front view showing an embodiment of a concentration device using a permanent magnet, and FIG. 6 is a front view showing an embodiment of a concentration device using an electromagnet. 2...Magnetic fluid, 5...Rubber magnet.
Claims (1)
力を作用させ、磁性粒子を重力と逆方向に移動さ
せることを特徴とする磁性流体の濃縮方法。 ２ 磁気力が静的磁界による特許請求の範囲第１
項記載の磁性流体の濃縮方法。 ３ 磁気力が動的磁界による特許請求の範囲第１
項記載の磁性流体の濃縮方法。 ４ 磁性流体を満たした容器中に、一端が磁性流
体中にあり他端が露出した磁力手段を立て、前記
磁力手段の露出部の一部から濃縮された磁性流体
を導出することを特徴とする磁性流体の濃縮装
置。[Claims] 1. A method for concentrating a magnetic fluid, which comprises applying a magnetic force in a direction opposite to gravity to magnetic particles in the magnetic fluid, thereby causing the magnetic particles to move in a direction opposite to gravity. 2 Claim 1 where the magnetic force is based on a static magnetic field
Method for concentrating magnetic fluid as described in Section. 3 Claim 1 where the magnetic force is due to a dynamic magnetic field
Method for concentrating magnetic fluid as described in Section. 4. A magnetic means having one end submerged in the magnetic fluid and the other end exposed is placed in a container filled with magnetic fluid, and the concentrated magnetic fluid is drawn out from a part of the exposed portion of the magnetic means. Ferrofluid concentrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55156892A JPS5781848A (en) | 1980-11-06 | 1980-11-06 | Method and apparatus for concentration of magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55156892A JPS5781848A (en) | 1980-11-06 | 1980-11-06 | Method and apparatus for concentration of magnetic fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5781848A JPS5781848A (en) | 1982-05-22 |
| JPS6127106B2 true JPS6127106B2 (en) | 1986-06-24 |
Family
ID=15637670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55156892A Granted JPS5781848A (en) | 1980-11-06 | 1980-11-06 | Method and apparatus for concentration of magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5781848A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01314214A (en) * | 1988-06-13 | 1989-12-19 | Mitsubishi Cable Ind Ltd | Optical semiconductor module |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7344512B2 (en) * | 2002-03-15 | 2008-03-18 | Sun Medical Technology Research Corporation | Protector and blood pump system |
| JP7059358B2 (en) | 2018-03-30 | 2022-04-25 | 富士フイルム株式会社 | Separation device and separation method |
-
1980
- 1980-11-06 JP JP55156892A patent/JPS5781848A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01314214A (en) * | 1988-06-13 | 1989-12-19 | Mitsubishi Cable Ind Ltd | Optical semiconductor module |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5781848A (en) | 1982-05-22 |
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